BlackRock Funds III NPORT-P iShares U.S. Aggregate Bond Index Fund (Mar 2024 report)

Schedule of Investments (unaudited) March 31, 2024 iShares U.S. Aggregate Bond Index Fund (Percentages shown are based on Net Assets)

Mutual Fund	Value
U.S. Total Bond Index Master Portfolio of Master Investment Portfolio	$	2,800,252,378
Total Investments — 100.1% (Cost: $3,063,282,508)		2,800,252,378
Liabilities in Excess of Other Assets — (0.1)%		(1,446,373	)
Net Assets — 100.0%	$	2,798,806,005

 

iShares U.S. Aggregate Bond Index Fund (the “Fund”) seeks to achieve its investment objective by investing all of its assets in U.S. Total Bond Index Master Portfolio (the “Master Portfolio”), which has the same investment objective and strategies as the Fund. As of March 31, 2024, the value of the investment and the percentage owned by the Fund of the Master Portfolio was $2,800,252,378 and 100.0%, respectively.

The Fund records its investment in the Master Portfolio at fair value. The Fund’s investment in the Master Portfolio is valued pursuant to the pricing policies approved by the Board of Trustees of the Master Portfolio.

Fair Value Hierarchy as of Period End

Various inputs are used in determining the fair value of financial instruments. These inputs to valuation techniques are categorized into a fair value hierarchy consisting of three broad levels for financial reporting purposes as follows:

• Level 1 – Unadjusted price quotations in active markets/exchanges for identical assets or liabilities that the Fund has the ability to access;

• Level 2 – Other observable inputs (including, but not limited to, quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market–corroborated inputs); and

• Level 3 – Unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Valuation Committee’s assumptions used in determining the fair value of financial instruments).

The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3. The inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the fair value hierarchy classification is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Investments classified within Level 3 have significant unobservable inputs used by the Valuation Committee in determining the price for Fair Valued Investments. Level 3 investments include equity or debt issued by privately held companies or funds. There may not be a secondary market, and/or there are a limited number of investors. The categorization of a value determined for investments is based on the pricing transparency of the investments and is not necessarily an indication of the risks associated with investing in those securities. For information about the Fund’s policy regarding valuation of investments, refer to the Fund’s most recent financial statements.

Certain investments of the Fund were fair valued using net asset value per share or its equivalent as no quoted market value is available and therefore have been excluded from the fair value hierarchy.

S C H E D U L E O F I N V E S T M E N T S 1

Schedule of Investments (unaudited) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Asset-Backed Securities
American Express Credit Account Master Trust, Series 2022-2, Class A, 3.39%, 05/15/27	$	1,698	$	1,662,921
BA Credit Card Trust, Series 2023-A2, Class A2, 4.98%, 11/15/28		1,500		1,503,593
CarMax Auto Owner Trust, Series 2023-4, Class A3, 6.00%, 07/17/28		4,000		4,067,295
Chase Issuance Trust, Series 2024-A2, Class A, 4.63%, 01/15/31		360		358,528
GM Financial Consumer Automobile Receivables Trust, Series 2023-4, Class A3, 5.78%, 08/16/28		2,130		2,161,283
Santander Drive Auto Receivables Trust, Series 2024-1, Class B, 5.23%, 12/15/28		210		209,565
Toyota Auto Receivables Owner Trust
Series 2021-B, Class A3, 0.26%, 11/17/25		180		176,864
Series 2021-B, Class A4, 0.53%, 10/15/26		427		406,197
Verizon Master Trust, Series 2021-1, Class A, 0.50%, 05/20/27		488		484,485
WF Card Issuance Trust, Series 2024-A1, Class A, 4.94%, 02/15/29		1,000		1,000,464
Total Asset-Backed Securities — 0.4% (Cost: $12,087,283)				12,031,195
Corporate Bonds
Aerospace & Defense — 0.5%
Boeing Co.
4.88%, 05/01/25(a)		341		337,212
2.75%, 02/01/26(a)		171		162,103
2.20%, 02/04/26(a)		427		399,757
3.10%, 05/01/26(a)		171		162,275
2.70%, 02/01/27		80		73,688
2.80%, 03/01/27(a)		171		157,906
5.04%, 05/01/27(a)		341		334,569
3.25%, 03/01/28		300		274,985
3.20%, 03/01/29		341		304,631
2.95%, 02/01/30(a)		100		86,366
5.15%, 05/01/30		300		290,252
6.13%, 02/15/33		74		75,456
3.25%, 02/01/35		275		216,392
5.71%, 05/01/40		341		326,385
3.38%, 06/15/46		87		58,670
3.85%, 11/01/48(a)		171		120,508
3.90%, 05/01/49		130		92,628
3.75%, 02/01/50		243		169,041
5.81%, 05/01/50		450		425,758
5.93%, 05/01/60		427		400,327
General Dynamics Corp.
3.25%, 04/01/25(a)		87		85,306
3.50%, 05/15/25(a)		171		167,918
1.15%, 06/01/26(a)		78		71,833
2.13%, 08/15/26		87		81,528
3.75%, 05/15/28(a)		87		84,197
2.25%, 06/01/31(a)		61		51,683
4.25%, 04/01/40		171		155,035
2.85%, 06/01/41		83		61,427
4.25%, 04/01/50		87		75,773
General Electric Co., Series A, 6.75%, 03/15/32(a)		200		222,788
Howmet Aerospace, Inc.
3.00%, 01/15/29		100		90,302
5.95%, 02/01/37		100		103,493

Security	Par (000)		Value
Aerospace & Defense (continued)
Huntington Ingalls Industries, Inc., 2.04%, 08/16/28	$	71	$	61,991
L3Harris Technologies, Inc.
3.83%, 04/27/25		87		85,517
5.40%, 01/15/27		100		100,714
4.40%, 06/15/28		458		445,471
5.05%, 06/01/29(a)		50		49,840
2.90%, 12/15/29(a)		121		107,698
1.80%, 01/15/31		158		128,293
5.25%, 06/01/31		45		44,917
5.40%, 07/31/33(a)		205		206,288
5.35%, 06/01/34		35		35,000
5.60%, 07/31/53		100		101,502
Lockheed Martin Corp.
3.55%, 01/15/26(a)		194		189,367
5.10%, 11/15/27(a)		35		35,400
4.50%, 02/15/29(a)		45		44,573
1.85%, 06/15/30		300		252,837
3.90%, 06/15/32(a)		58		54,430
5.25%, 01/15/33(a)		50		51,395
4.80%, 08/15/34(a)		50		49,446
3.60%, 03/01/35(a)		65		57,573
4.50%, 05/15/36		141		133,914
4.07%, 12/15/42		189		163,824
4.70%, 05/15/46		130		121,377
4.09%, 09/15/52		187		157,028
4.15%, 06/15/53		140		118,092
5.70%, 11/15/54(a)		110		117,230
5.20%, 02/15/55		100		99,835
4.30%, 06/15/62		140		118,570
5.90%, 11/15/63(a)		40		43,814
5.20%, 02/15/64		100		98,879
Northrop Grumman Corp.
3.25%, 01/15/28		341		322,219
4.60%, 02/01/29(a)		50		49,433
4.40%, 05/01/30		171		166,326
4.70%, 03/15/33		100		97,623
4.90%, 06/01/34		50		49,132
4.75%, 06/01/43		151		138,996
4.03%, 10/15/47		257		210,157
5.25%, 05/01/50		150		147,139
4.95%, 03/15/53(a)		75		70,456
5.20%, 06/01/54		100		97,390
Precision Castparts Corp., 4.38%, 06/15/45		87		76,944
RTX Corp.
3.95%, 08/16/25		171		168,188
5.00%, 02/27/26(a)		75		74,805
2.65%, 11/01/26(a)		300		282,699
5.75%, 11/08/26		100		101,537
3.50%, 03/15/27		171		164,309
3.13%, 05/04/27(a)		171		161,985
4.13%, 11/16/28		211		204,097
5.75%, 01/15/29(a)		85		87,951
2.25%, 07/01/30(a)		246		210,018
6.00%, 03/15/31(a)		200		210,241
1.90%, 09/01/31		171		137,839
2.38%, 03/15/32(a)		200		164,764
5.15%, 02/27/33(a)		125		125,238
6.10%, 03/15/34(a)		120		128,254
4.45%, 11/16/38(a)		87		78,362
4.88%, 10/15/40		87		81,211
4.70%, 12/15/41		74		66,919

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 1

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Aerospace & Defense (continued)
RTX Corp. (continued)
4.50%, 06/01/42(a)	$	350	$	312,285
4.15%, 05/15/45		87		72,208
3.75%, 11/01/46		130		100,607
4.35%, 04/15/47		171		145,575
4.05%, 05/04/47		87		70,960
4.63%, 11/16/48		214		190,224
3.13%, 07/01/50(a)		227		154,928
2.82%, 09/01/51		87		55,338
3.03%, 03/15/52(a)		100		66,215
5.38%, 02/27/53(a)		95		93,691
6.40%, 03/15/54(a)		55		62,225
Textron, Inc., 3.00%, 06/01/30(a)		171		150,870
				14,344,365
Air Freight & Logistics — 0.1%
FedEx Corp.
3.25%, 04/01/26(a)		95		91,862
4.25%, 05/15/30(a)		141		136,413
2.40%, 05/15/31(a)		109		92,516
3.90%, 02/01/35		67		59,765
3.25%, 05/15/41(a)		147		110,062
3.88%, 08/01/42		50		40,093
4.75%, 11/15/45		114		100,993
4.55%, 04/01/46(a)		130		112,119
4.40%, 01/15/47		87		72,813
4.05%, 02/15/48		87		69,408
4.95%, 10/17/48(a)		171		155,654
5.25%, 05/15/50(a)		150		143,674
GXO Logistics, Inc.(a)
1.65%, 07/15/26		171		156,787
2.65%, 07/15/31		87		70,831
United Parcel Service, Inc.
3.90%, 04/01/25		171		168,786
2.40%, 11/15/26(a)		141		132,667
3.05%, 11/15/27		87		82,155
4.88%, 03/03/33(a)		60		60,075
6.20%, 01/15/38(a)		74		81,893
5.20%, 04/01/40(a)		171		172,040
3.63%, 10/01/42		87		71,306
3.40%, 11/15/46(a)		78		60,404
3.75%, 11/15/47		87		69,679
3.40%, 09/01/49(a)		75		56,509
5.30%, 04/01/50(a)		171		173,858
5.05%, 03/03/53(a)		60		58,912
				2,601,274
Automobile Components — 0.0%
Aptiv PLC(a)
4.40%, 10/01/46		87		68,739
3.10%, 12/01/51		171		107,849
Aptiv PLC/Aptiv Corp.(a)
3.25%, 03/01/32		102		88,719
4.15%, 05/01/52		87		66,637
BorgWarner, Inc., 2.65%, 07/01/27(a)		156		144,436
Lear Corp.(a)
2.60%, 01/15/32		71		58,250
5.25%, 05/15/49		87		79,386
3.55%, 01/15/52		74		51,568
Magna International, Inc.
5.05%, 03/14/29		25		24,987

Security	Par (000)		Value
Automobile Components (continued)
Magna International, Inc. (continued)
2.45%, 06/15/30(a)	$	60	$	51,912
5.50%, 03/21/33(a)		20		20,581
				763,064
Automobiles — 0.5%
American Honda Finance Corp.
1.00%, 09/10/25(a)		200		188,285
5.80%, 10/03/25(a)		50		50,407
4.95%, 01/09/26(a)		50		49,884
1.30%, 09/09/26		71		65,029
2.35%, 01/08/27(a)		87		81,402
4.90%, 03/12/27		50		49,901
4.70%, 01/12/28(a)		20		19,916
2.00%, 03/24/28		93		83,745
5.13%, 07/07/28(a)		300		303,388
5.65%, 11/15/28(a)		50		51,524
2.25%, 01/12/29(a)		87		77,589
4.90%, 03/13/29		50		49,858
4.60%, 04/17/30(a)		60		59,046
5.85%, 10/04/30		50		52,295
4.90%, 01/10/34		35		34,464
Series A, 4.60%, 04/17/25(a)		60		59,530
AutoNation, Inc.
1.95%, 08/01/28		74		64,041
2.40%, 08/01/31		78		62,835
3.85%, 03/01/32(a)		80		71,109
AutoZone, Inc.
3.25%, 04/15/25(a)		58		56,676
5.05%, 07/15/26(a)		25		25,039
4.50%, 02/01/28(a)		145		142,751
6.25%, 11/01/28(a)		25		26,217
3.75%, 04/18/29(a)		171		161,741
4.75%, 08/01/32		100		97,015
4.75%, 02/01/33(a)		150		144,916
5.20%, 08/01/33(a)		25		25,037
6.55%, 11/01/33(a)		25		27,364
Ford Motor Co.
7.45%, 07/16/31(a)		100		108,536
3.25%, 02/12/32		100		83,181
6.10%, 08/19/32(a)		200		202,663
4.75%, 01/15/43(a)		200		166,076
7.40%, 11/01/46		100		108,935
5.29%, 12/08/46(a)		200		177,814
General Motors Co.
4.00%, 04/01/25(a)		341		335,558
4.20%, 10/01/27		171		165,578
6.80%, 10/01/27		104		108,896
5.40%, 10/15/29(a)		65		65,177
5.60%, 10/15/32(a)		100		101,202
5.00%, 04/01/35		130		123,204
6.60%, 04/01/36(a)		187		198,792
5.15%, 04/01/38		287		269,384
6.25%, 10/02/43(a)		150		153,442
5.20%, 04/01/45		171		153,619
6.75%, 04/01/46(a)		133		143,627
5.95%, 04/01/49(a)		112		110,430
General Motors Financial Co., Inc.
2.75%, 06/20/25(a)		169		163,315
4.30%, 07/13/25		171		168,403
6.05%, 10/10/25		380		382,814
5.25%, 03/01/26(a)		179		178,432
5.40%, 04/06/26		65		65,024

2  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Automobiles (continued)
General Motors Financial Co., Inc. (continued)
1.50%, 06/10/26	$	171	$	157,295
4.35%, 01/17/27		87		84,969
2.35%, 02/26/27(a)		171		157,887
5.00%, 04/09/27(a)		200		198,514
2.70%, 08/20/27(a)		171		157,593
6.00%, 01/09/28(a)		50		51,257
2.40%, 04/10/28(a)		89		79,928
5.80%, 06/23/28(a)		55		56,076
2.40%, 10/15/28		168		148,682
5.80%, 01/07/29(a)		75		76,321
5.65%, 01/17/29		87		87,900
4.30%, 04/06/29(a)		300		286,753
5.85%, 04/06/30(a)		45		45,898
3.60%, 06/21/30		90		81,243
2.70%, 06/10/31		122		101,695
3.10%, 01/12/32(a)		75		63,525
6.40%, 01/09/33		75		78,595
6.10%, 01/07/34(a)		75		77,009
Genuine Parts Co.
6.50%, 11/01/28		25		26,403
6.88%, 11/01/33		25		27,644
Honda Motor Co. Ltd., 2.97%, 03/10/32(a)		133		117,789
Mercedes-Benz Finance North America LLC, 8.50%, 01/18/31		104		126,628
O’Reilly Automotive, Inc.
5.75%, 11/20/26(a)		35		35,576
4.35%, 06/01/28(a)		171		167,834
3.90%, 06/01/29(a)		171		163,575
1.75%, 03/15/31		78		63,122
4.70%, 06/15/32(a)		100		97,729
PACCAR Financial Corp.
3.55%, 08/11/25(a)		270		264,523
4.95%, 10/03/25		80		79,823
4.45%, 03/30/26(a)		220		218,305
1.10%, 05/11/26(a)		110		101,725
5.20%, 11/09/26		25		25,201
2.00%, 02/04/27(a)		75		69,340
4.60%, 01/10/28		100		99,574
4.60%, 01/31/29(a)		50		49,667
5.00%, 03/22/34(a)		25		25,129
Toyota Motor Corp.
1.34%, 03/25/26(a)		87		81,182
5.28%, 07/13/26(a)		40		40,273
5.12%, 07/13/28		50		51,017
2.76%, 07/02/29(a)		65		60,172
2.36%, 03/25/31(a)		87		75,964
5.12%, 07/13/33(a)		45		47,483
Toyota Motor Credit Corp.
3.95%, 06/30/25		1,085		1,069,628
3.65%, 08/18/25		80		78,492
5.60%, 09/11/25		25		25,168
5.40%, 11/10/25		100		100,504
4.80%, 01/05/26(a)		50		49,820
4.45%, 05/18/26		80		79,232
1.13%, 06/18/26(a)		210		193,290
5.00%, 08/14/26(a)		100		100,107
5.40%, 11/20/26(a)		50		50,581
1.90%, 01/13/27(a)		171		157,886
3.05%, 03/22/27(a)		171		162,667
4.55%, 09/20/27		100		99,029
4.63%, 01/12/28(a)		40		39,839

Security	Par (000)		Value
Automobiles (continued)
Toyota Motor Credit Corp. (continued)
1.90%, 04/06/28	$	189	$	169,721
5.25%, 09/11/28(a)		25		25,431
4.65%, 01/05/29		50		49,694
3.65%, 01/08/29(a)		171		162,828
4.45%, 06/29/29(a)		100		98,631
2.15%, 02/13/30		87		75,286
3.38%, 04/01/30		300		277,077
4.55%, 05/17/30(a)		80		78,686
5.10%, 03/21/31		50		50,393
1.90%, 09/12/31(a)		121		99,236
4.70%, 01/12/33(a)		45		44,607
Series B, 5.00%, 03/19/27		50		50,153
				13,409,910
Banks — 6.2%
African Development Bank
4.63%, 01/04/27		1,000		1,001,314
4.38%, 03/14/28		600		597,658
Asian Development Bank
3.75%, 04/25/28(a)		1,000		975,023
4.50%, 08/25/28(a)		300		301,584
4.00%, 01/12/33		400		389,187
3.88%, 06/14/33		200		192,531
Asian Infrastructure Investment Bank, 4.88%, 09/14/26		1,000		1,004,970
Banco Bilbao Vizcaya Argentaria SA(b)
(1-year CMT + 2.30%), 5.86%, 09/14/26(a)		200		200,291
(1-year CMT + 3.30%), 7.88%, 11/15/34		200		218,739
Banco Santander SA
5.15%, 08/18/25		600		595,804
5.18%, 11/19/25		200		197,754
1.85%, 03/25/26(a)		400		373,646
5.29%, 08/18/27		400		399,075
5.59%, 08/08/28		200		202,825
2.75%, 12/03/30(a)		400		330,598
6.92%, 08/08/33		200		209,294
6.94%, 11/07/33		200		220,908
6.35%, 03/14/34		200		200,144
(1-year CMT + 0.90%), 1.72%, 09/14/27(b)		200		182,421
Bank of America Corp.
3.88%, 08/01/25(a)		384		377,964
4.45%, 03/03/26		229		225,565
3.50%, 04/19/26		111		107,644
4.25%, 10/22/26		221		216,106
3.25%, 10/21/27(a)		236		223,741
6.11%, 01/29/37(a)		350		371,733
7.75%, 05/14/38(a)		200		242,643
5.88%, 02/07/42		189		201,632
5.00%, 01/21/44(a)		214		207,107
4.88%, 04/01/44(a)		171		161,542
(1-day SOFR + 0.96%), 1.73%, 07/22/27(b)		600		553,170
(1-day SOFR + 1.01%), 1.20%, 10/24/26(a)(b)		189		176,898
(1-day SOFR + 1.05%), 2.55%, 02/04/28(b)		362		336,486
(1-day SOFR + 1.06%), 2.09%, 06/14/29(b)		341		301,334
(1-day SOFR + 1.15%), 1.32%, 06/19/26(b)		291		276,613
(1-day SOFR + 1.21%), 2.57%, 10/20/32(b)		377		312,768
(1-day SOFR + 1.22%), 2.30%, 07/21/32(a)(b)		495		405,063
(1-day SOFR + 1.29%), 5.08%, 01/20/27(b)		230		228,842
(1-day SOFR + 1.32%), 2.69%, 04/22/32(b)		536		453,697
(1-day SOFR + 1.33%), 3.38%, 04/02/26(b)		206		201,482
(1-day SOFR + 1.33%), 2.97%, 02/04/33(b)		457		388,651
(1-day SOFR + 1.34%), 5.93%, 09/15/27(b)		150		152,011

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 3

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Banks (continued)
Bank of America Corp. (continued)
(1-day SOFR + 1.37%), 1.92%, 10/24/31(b)	$	291	$	237,113
(1-day SOFR + 1.53%), 1.90%, 07/23/31(b)		341		279,871
(1-day SOFR + 1.56%), 2.97%, 07/21/52(b)		70		47,100
(1-day SOFR + 1.57%), 5.82%, 09/15/29(b)		250		256,335
(1-day SOFR + 1.58%), 4.38%, 04/27/28(b)		336		328,001
(1-day SOFR + 1.58%), 3.31%, 04/22/42(b)		211		162,536
(1-day SOFR + 1.63%), 5.20%, 04/25/29(b)		245		245,232
(1-day SOFR + 1.65%), 5.47%, 01/23/35(a)(b)		690		694,498
(1-day SOFR + 1.75%), 4.83%, 07/22/26(b)		320		317,121
(1-day SOFR + 1.83%), 4.57%, 04/27/33(b)		373		354,319
(1-day SOFR + 1.84%), 5.87%, 09/15/34(a)(b)		350		363,010
(1-day SOFR + 1.88%), 2.83%, 10/24/51(a)(b)		140		91,473
(1-day SOFR + 1.91%), 5.29%, 04/25/34(a)(b)		520		518,419
(1-day SOFR + 1.93%), 2.68%, 06/19/41(a)(b)		511		363,591
(1-day SOFR + 1.99%), 6.20%, 11/10/28(a)(b)		155		160,341
(1-day SOFR + 2.04%), 4.95%, 07/22/28(b)		420		416,795
(1-day SOFR + 2.15%), 2.59%, 04/29/31(b)		300		258,644
(1-day SOFR + 2.16%), 5.02%, 07/22/33(a)(b)		610		600,397
(3-mo. CME Term SOFR + 1.25%), 2.50%, 02/13/31(b)		397		341,992
(3-mo. CME Term SOFR + 1.30%), 3.42%, 12/20/28(b)		500		469,070
(3-mo. CME Term SOFR + 1.32%), 3.56%, 04/23/27(a)(b)		471		454,479
(3-mo. CME Term SOFR + 1.33%), 3.97%, 03/05/29(b)		171		163,457
(3-mo. CME Term SOFR + 1.44%), 3.19%, 07/23/30(b)		251		227,949
(3-mo. CME Term SOFR + 1.45%), 2.88%, 10/22/30(b)		171		151,945
(3-mo. CME Term SOFR + 1.45%), 3.95%, 01/23/49(a)(b)		104		85,161
(3-mo. CME Term SOFR + 1.47%), 3.97%, 02/07/30(b)		300		284,293
(3-mo. CME Term SOFR + 1.57%), 4.27%, 07/23/29(b)		249		240,015
(3-mo. CME Term SOFR + 1.58%), 4.08%, 04/23/40(b)		171		147,743
(3-mo. CME Term SOFR + 1.63%), 3.59%, 07/21/28(b)		87		82,692
(3-mo. CME Term SOFR + 1.77%), 3.71%, 04/24/28(a)(b)		171		163,614
(3-mo. CME Term SOFR + 1.78%), 4.33%, 03/15/50(b)		341		293,516
(3-mo. CME Term SOFR + 1.84%), 3.82%, 01/20/28(a)(b)		341		328,436
(3-mo. CME Term SOFR + 2.08%), 4.24%, 04/24/38(a)(b)		257		231,183
(3-mo. CME Term SOFR + 2.25%), 4.44%, 01/20/48(b)		197		172,892
(3-mo. CME Term SOFR + 3.41%), 4.08%, 03/20/51(b)		350		287,009
(5-year CMT + 1.20%), 2.48%, 09/21/36(a)(b)		171		136,771
Series L, 3.95%, 04/21/25(a)		368		362,108
Series L, 4.18%, 11/25/27(a)		171		165,986
Series N, (1-day SOFR + 0.91%), 1.66%, 03/11/27(b)		291		271,071
Series N, (1-day SOFR + 1.22%), 2.65%, 03/11/32(b)		291		245,890
Series N, (1-day SOFR + 1.65%), 3.48%, 03/13/52(b)		124		92,480

Security	Par (000)		Value
Banks (continued)
Bank of America N.A.
5.65%, 08/18/25	$	250	$	251,515
5.53%, 08/18/26		250		252,536
6.00%, 10/15/36		250		265,212
Bank of Montreal
3.70%, 06/07/25(a)		650		637,725
5.92%, 09/25/25(a)		50		50,508
5.30%, 06/05/26		40		40,103
5.27%, 12/11/26(a)		40		40,177
2.65%, 03/08/27(a)		133		124,663
5.20%, 02/01/28(a)		150		151,111
5.72%, 09/25/28		100		102,700
(5-year CMT + 1.40%), 3.09%, 01/10/37(b)		241		196,890
(5-year USD Swap + 1.43%), 3.80%, 12/15/32(a)(b)		87		81,159
Bank of New York Mellon Corp.
1.60%, 04/24/25(a)		341		327,975
2.80%, 05/04/26(a)		70		66,878
1.05%, 10/15/26(a)		171		155,241
2.05%, 01/26/27(a)		71		65,796
3.25%, 05/16/27		130		123,994
1.65%, 07/14/28(a)		75		66,222
3.85%, 04/26/29(a)		118		113,133
3.30%, 08/23/29(a)		171		157,879
1.80%, 07/28/31(a)		51		41,180
2.50%, 01/26/32(a)		87		73,273
(1-day SOFR + 1.03%), 4.95%, 04/26/27(b)		100		99,544
(1-day SOFR + 1.09%), 4.98%, 03/14/30(a)(b)		150		150,129
(1-day SOFR + 1.15%), 3.99%, 06/13/28(b)		100		97,018
(1-day SOFR + 1.17%), 4.54%, 02/01/29(a)(b)		100		98,468
(1-day SOFR + 1.35%), 4.41%, 07/24/26(b)		175		172,876
(1-day SOFR + 1.42%), 4.29%, 06/13/33(b)		100		94,005
(1-day SOFR + 1.42%), 5.19%, 03/14/35(b)		150		149,307
(1-day SOFR + 1.51%), 4.71%, 02/01/34(b)		100		96,491
(1-day SOFR + 1.60%), 6.32%, 10/25/29(b)		75		79,142
(1-day SOFR + 1.76%), 4.60%, 07/26/30(b)		115		112,881
(1-day SOFR + 1.85%), 6.47%, 10/25/34(b)		75		81,673
(1-day SOFR Index + 1.80%), 5.80%, 10/25/28(b)		80		82,153
(1-day SOFR Index + 2.07%), 5.83%, 10/25/33(b)		180		187,958
(3-mo. CME Term SOFR + 1.33%), 3.44%, 02/07/28(a)(b)		91		87,257
Series J, (1-day SOFR + 1.61%), 4.97%, 04/26/34(a)(b)		100		98,165
Bank of Nova Scotia
3.45%, 04/11/25		118		115,660
5.45%, 06/12/25		60		60,053
4.50%, 12/16/25		87		85,559
4.75%, 02/02/26		60		59,556
2.70%, 08/03/26(a)		87		82,344
1.30%, 09/15/26(a)		240		219,124
5.35%, 12/07/26(a)		50		50,255
1.95%, 02/02/27(a)		171		157,510
5.25%, 06/12/28		60		60,524
4.85%, 02/01/30		60		59,561
2.15%, 08/01/31		171		140,603
2.45%, 02/02/32		171		141,591
5.65%, 02/01/34(a)		250		257,539
Barclays PLC
4.38%, 01/12/26		200		196,216
5.25%, 08/17/45(a)		250		238,972

4  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Banks (continued)
Barclays PLC (continued)
4.95%, 01/10/47	$	200	$	182,646
(1-day SOFR + 2.21%), 5.83%, 05/09/27(b)		200		200,425
(1-day SOFR + 2.42%), 6.04%, 03/12/55(b)		200		208,230
(1-day SOFR + 2.62%), 6.69%, 09/13/34(a)(b)		200		213,068
(1-day SOFR + 2.71%), 2.85%, 05/07/26(b)		500		484,650
(1-day SOFR + 2.98%), 6.22%, 05/09/34(b)		200		206,280
(1-day SOFR + 3.57%), 7.12%, 06/27/34(a)(b)		200		213,147
(1-year CMT + 1.05%), 2.28%, 11/24/27(b)		222		204,159
(1-year CMT + 1.20%), 2.67%, 03/10/32(b)		490		406,842
(1-year CMT + 1.30%), 3.33%, 11/24/42(b)		222		162,793
(1-year CMT + 2.30%), 5.30%, 08/09/26(b)		245		243,715
(1-year CMT + 2.65%), 5.50%, 08/09/28(a)(b)		300		299,136
(1-year CMT + 3.05%), 7.33%, 11/02/26(b)		200		204,906
(1-year CMT + 3.30%), 7.39%, 11/02/28(b)		200		212,092
(1-year CMT + 3.50%), 7.44%, 11/02/33(b)		200		222,151
(3-mo. LIBOR US + 1.90%), 4.97%, 05/16/29(b)		400		392,009
Canadian Imperial Bank of Commerce
5.14%, 04/28/25		60		59,808
3.95%, 08/04/25		100		98,211
0.95%, 10/23/25(a)		124		116,417
1.25%, 06/22/26		341		314,170
5.62%, 07/17/26		25		25,220
5.93%, 10/02/26(a)		50		50,959
5.00%, 04/28/28		60		59,789
5.99%, 10/03/28(a)		50		51,865
6.09%, 10/03/33		250		263,027
Citibank N.A.
5.86%, 09/29/25(a)		250		252,396
5.49%, 12/04/26		250		252,673
5.80%, 09/29/28		250		258,792
Citigroup, Inc.
3.30%, 04/27/25(a)		55		53,810
4.40%, 06/10/25		87		85,798
5.50%, 09/13/25		171		170,922
3.70%, 01/12/26(a)		171		166,477
4.60%, 03/09/26(a)		130		127,938
3.40%, 05/01/26(a)		87		83,768
3.20%, 10/21/26		427		406,655
4.30%, 11/20/26		53		51,725
4.45%, 09/29/27(a)		250		243,199
4.13%, 07/25/28		130		124,609
6.63%, 06/15/32		74		79,312
6.13%, 08/25/36		184		191,170
8.13%, 07/15/39		100		127,957
5.88%, 01/30/42(a)		127		134,302
6.68%, 09/13/43(a)		87		97,191
5.30%, 05/06/44(a)		87		84,502
4.65%, 07/30/45		130		117,391
4.75%, 05/18/46(a)		257		228,221
4.65%, 07/23/48(a)		257		232,542
(1-day SOFR + 0.77%), 1.12%, 01/28/27(b)		376		347,750
(1-day SOFR + 0.77%), 1.46%, 06/09/27(b)		300		275,559
(1-day SOFR + 1.15%), 2.67%, 01/29/31(b)		171		148,200
(1-day SOFR + 1.17%), 2.56%, 05/01/32(a)(b)		207		172,639
(1-day SOFR + 1.18%), 2.52%, 11/03/32(b)		484		396,917
(1-day SOFR + 1.28%), 3.07%, 02/24/28(b)		171		160,846
(1-day SOFR + 1.35%), 3.06%, 01/25/33(b)		257		218,490
(1-day SOFR + 1.36%), 5.17%, 02/13/30(b)		120		119,440
(1-day SOFR + 1.38%), 2.90%, 11/03/42(a)(b)		87		62,472
(1-day SOFR + 1.42%), 2.98%, 11/05/30(b)		171		151,896
(1-day SOFR + 1.55%), 5.61%, 09/29/26(b)		305		305,486
(1-day SOFR + 1.89%), 4.66%, 05/24/28(a)(b)		150		147,730

Security	Par (000)		Value
Banks (continued)
Citigroup, Inc. (continued)
(1-day SOFR + 1.94%), 3.79%, 03/17/33(b)	$	713	$	636,884
(1-day SOFR + 2.06%), 5.83%, 02/13/35(b)		200		197,997
(1-day SOFR + 2.09%), 4.91%, 05/24/33(b)		500		482,034
(1-day SOFR + 2.11%), 2.57%, 06/03/31(b)		257		219,605
(1-day SOFR + 2.34%), 6.27%, 11/17/33(a)(b)		200		211,233
(1-day SOFR + 2.66%), 6.17%, 05/25/34(b)		300		304,647
(1-day SOFR + 2.84%), 3.11%, 04/08/26(b)		440		428,863
(1-day SOFR + 3.91%), 4.41%, 03/31/31(b)		410		390,795
(3-mo. CME Term SOFR + 1.41%), 3.52%, 10/27/28(a)(b)		341		321,535
(3-mo. CME Term SOFR + 1.43%), 3.88%, 01/24/39(b)		200		170,323
(3-mo. CME Term SOFR + 1.45%), 4.08%, 04/23/29(a)(b)		200		191,478
(3-mo. CME Term SOFR + 1.60%), 3.98%, 03/20/30(b)		177		166,772
(3-mo. CME Term SOFR + 1.65%), 3.67%, 07/24/28(b)		171		162,533
(3-mo. CME Term SOFR + 1.82%), 3.89%, 01/10/28(b)		171		164,890
(3-mo. CME Term SOFR + 2.10%), 4.28%, 04/24/48(b)		171		146,380
Citizens Financial Group, Inc.
2.85%, 07/27/26(a)		257		241,444
2.50%, 02/06/30(a)		61		51,502
2.64%, 09/30/32		100		76,619
(1-day SOFR + 2.01%), 5.84%, 01/23/30(b)		200		199,713
(5-year CMT + 2.75%), 5.64%, 05/21/37(a)(b)		61		56,939
Comerica, Inc., 4.00%, 02/01/29(a)		171		156,864
Cooperatieve Rabobank UA
4.38%, 08/04/25		500		491,306
5.25%, 05/24/41		176		180,221
5.75%, 12/01/43		250		254,555
Cooperatieve Rabobank UA/New York, 3.38%, 05/21/25		1,000		980,840
Council of Europe Development Bank, 3.75%, 05/25/26		500		490,178
Credit Suisse AG/New York
5.00%, 07/09/27		250		247,722
7.50%, 02/15/28		250		269,572
Credit Suisse USA, Inc., 7.13%, 07/15/32		200		224,272
Deutsche Bank AG, 4.10%, 01/13/26(a)		62		60,483
Deutsche Bank AG/New York
5.37%, 09/09/27		200		201,035
(1-day SOFR + 1.32%), 2.55%, 01/07/28(b)		192		176,290
(1-day SOFR + 2.52%), 7.15%, 07/13/27(b)		150		154,157
(1-day SOFR + 2.76%), 3.73%, 01/14/32(b)		200		168,447
(1-day SOFR + 3.04%), 3.55%, 09/18/31(b)		496		436,797
(1-day SOFR + 3.18%), 6.72%, 01/18/29(b)		150		155,124
(1-day SOFR + 3.65%), 7.08%, 02/10/34(b)		200		205,686
Class F, (1-day SOFR + 1.22%), 2.31%, 11/16/27(b)		353		322,735
Discover Bank, 3.45%, 07/27/26(a)		250		238,088
European Investment Bank
3.88%, 03/15/28		1,000		980,473
3.63%, 07/15/30		1,000		961,887
3.75%, 02/14/33		1,000		958,683
Fifth Third Bancorp
2.55%, 05/05/27		121		111,561
8.25%, 03/01/38		75		89,980
(1-day SOFR + 0.69%), 1.71%, 11/01/27(a)(b)		171		155,564
(1-day SOFR + 1.36%), 4.06%, 04/25/28(a)(b)		61		58,244

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 5

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Banks (continued)
Fifth Third Bancorp (continued)
(1-day SOFR + 1.66%), 4.34%, 04/25/33(b)	$	61	$	55,679
(1-day SOFR + 1.84%), 5.63%, 01/29/32(a)(b)		200		200,205
(1-day SOFR Index + 2.13%), 4.77%, 07/28/30(b)		100		96,268
(1-day SOFR Index + 2.19%), 6.36%, 10/27/28(b)		100		102,327
First-Citizens Bank & Trust Co., 6.13%, 03/09/28		75		77,032
Goldman Sachs Bank USA/New York, (1-day SOFR + 0.78%), 5.28%, 03/18/27(b)		125		124,937
Goldman Sachs Group, Inc.
3.50%, 04/01/25(a)		327		320,809
3.75%, 05/22/25		384		376,849
4.25%, 10/21/25		181		177,598
3.75%, 02/25/26		217		211,858
3.50%, 11/16/26		341		327,160
5.95%, 01/15/27		87		88,878
3.85%, 01/26/27(a)		341		330,593
2.60%, 02/07/30(a)		341		298,483
3.80%, 03/15/30(a)		200		187,300
6.45%, 05/01/36(a)		110		117,347
6.75%, 10/01/37		651		711,242
6.25%, 02/01/41		171		186,196
4.80%, 07/08/44		214		197,780
5.15%, 05/22/45		257		248,480
4.75%, 10/21/45(a)		200		184,258
(1-day SOFR + 0.80%), 1.43%, 03/09/27(b)		427		395,440
(1-day SOFR + 0.82%), 1.54%, 09/10/27(b)		341		311,591
(1-day SOFR + 0.91%), 1.95%, 10/21/27(a)(b)		283		260,140
(1-day SOFR + 1.08%), 5.80%, 08/10/26(b)		300		300,972
(1-day SOFR + 1.09%), 1.99%, 01/27/32(b)		250		202,299
(1-day SOFR + 1.11%), 2.64%, 02/24/28(b)		197		183,482
(1-day SOFR + 1.25%), 2.38%, 07/21/32(b)		477		391,311
(1-day SOFR + 1.26%), 2.65%, 10/21/32(b)		274		227,974
(1-day SOFR + 1.28%), 2.62%, 04/22/32(b)		450		377,663
(1-day SOFR + 1.41%), 3.10%, 02/24/33(b)		391		334,401
(1-day SOFR + 1.47%), 2.91%, 07/21/42(b)		150		107,855
(1-day SOFR + 1.51%), 4.39%, 06/15/27(a)(b)		125		122,585
(1-day SOFR + 1.51%), 3.21%, 04/22/42(b)		171		128,583
(1-day SOFR + 1.63%), 3.44%, 02/24/43(b)		216		167,316
(1-day SOFR + 1.73%), 4.48%, 08/23/28(b)		200		195,527
(1-day SOFR + 1.77%), 6.48%, 10/24/29(a)(b)		250		263,030
(1-day SOFR + 1.85%), 3.62%, 03/15/28(a)(b)		100		95,653
(1-day SOFR + 1.95%), 6.56%, 10/24/34(a)(b)		200		218,199
(3-mo. CME Term SOFR + 1.42%), 3.81%, 04/23/29(b)		341		323,258
(3-mo. CME Term SOFR + 1.56%), 4.22%, 05/01/29(a)(b)		371		357,100
(3-mo. CME Term SOFR + 1.63%), 4.02%, 10/31/38(b)		341		293,631
(3-mo. CME Term SOFR + 1.69%), 4.41%, 04/23/39(b)		171		153,076
(3-mo. CME Term SOFR + 1.77%), 3.69%, 06/05/28(a)(b)		427		408,558
HSBC Bank USA NA, 7.00%, 01/15/39		250		289,204
HSBC Holdings PLC
4.25%, 08/18/25		200		196,016
4.30%, 03/08/26		350		343,541
3.90%, 05/25/26		311		302,812
4.38%, 11/23/26		390		381,113
6.50%, 05/02/36(a)		297		307,989
6.50%, 09/15/37(a)		260		270,670
6.50%, 09/15/37		200		212,983

Security	Par (000)		Value
Banks (continued)
HSBC Holdings PLC (continued)
6.80%, 06/01/38(a)	$	250	$	266,821
6.10%, 01/14/42(a)		171		185,063
5.25%, 03/14/44(a)		232		219,609
(1-day SOFR + 1.46%), 5.55%, 03/04/30(b)		200		201,195
(1-day SOFR + 1.57%), 5.89%, 08/14/27(b)		400		403,499
(1-day SOFR + 1.78%), 5.72%, 03/04/35(a)(b)		200		202,413
(1-day SOFR + 1.97%), 6.16%, 03/09/29(b)		200		205,492
(1-day SOFR + 2.11%), 4.76%, 06/09/28(b)		200		196,130
(1-day SOFR + 2.39%), 2.85%, 06/04/31(b)		349		301,027
(1-day SOFR + 2.39%), 6.25%, 03/09/34(a)(b)		300		316,160
(1-day SOFR + 2.53%), 4.76%, 03/29/33(b)		285		264,884
(1-day SOFR + 2.61%), 5.21%, 08/11/28(a)(b)		600		598,267
(1-day SOFR + 2.65%), 6.33%, 03/09/44(b)		225		241,328
(1-day SOFR + 2.98%), 6.55%, 06/20/34(a)(b)		200		207,167
(1-day SOFR + 3.02%), 7.40%, 11/13/34(b)		200		218,735
(1-day SOFR + 4.25%), 8.11%, 11/03/33(a)(b)		300		343,478
(3-mo. CME Term SOFR + 1.61%), 4.29%, 09/12/26(b)		500		490,815
(3-mo. CME Term SOFR + 1.81%), 4.04%, 03/13/28(b)		211		203,407
(3-mo. CME Term SOFR + 1.87%), 3.97%, 05/22/30(b)		211		197,197
(1-day SOFR + 3.03%), 7.34%, 11/03/26(b)		300		308,649
(1-day SOFR + 3.35%), 7.39%, 11/03/28(b)		215		228,741
Huntington Bancshares, Inc.(a)
4.00%, 05/15/25		171		167,946
(1-day SOFR + 1.97%), 4.44%, 08/04/28(b)		260		250,900
(1-day SOFR + 2.05%), 5.02%, 05/17/33(b)		73		69,555
Huntington National Bank
5.65%, 01/10/30(a)		250		251,396
(1-day SOFR Index + 1.65%), 4.55%, 05/17/28(b)		280		271,377
ING Groep NV
3.95%, 03/29/27		250		241,568
(1-day SOFR + 1.01%), 1.73%, 04/01/27(b)		350		324,859
(1-day SOFR + 1.77%), 5.55%, 03/19/35(b)		200		198,469
(1-day SOFR + 1.83%), 4.02%, 03/28/28(b)		211		203,301
(1-day SOFR + 2.09%), 6.11%, 09/11/34(a)(b)		200		207,649
Inter-American Development Bank(a)
4.00%, 01/12/28		500		492,155
3.50%, 04/12/33		1,000		934,433
International Bank for Reconstruction & Development
3.50%, 07/12/28(a)		1,000		966,362
4.63%, 08/01/28		750		757,665
3.88%, 02/14/30(a)		1,000		974,842
4.00%, 01/10/31(a)		750		733,108
4.75%, 11/14/33		200		206,138
JPMorgan Chase & Co.
3.90%, 07/15/25(a)		384		377,665
3.30%, 04/01/26(a)		87		84,244
3.20%, 06/15/26(a)		171		164,543
2.95%, 10/01/26(a)		500		476,580
7.63%, 10/15/26(a)		87		92,215
4.13%, 12/15/26		87		84,830
4.25%, 10/01/27(a)		87		85,027
3.63%, 12/01/27		171		162,827
6.40%, 05/15/38		389		437,565
5.50%, 10/15/40		66		67,620
5.60%, 07/15/41		96		100,518
5.40%, 01/06/42(a)		71		72,403
5.63%, 08/16/43(a)		87		90,582

6  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Banks (continued)
JPMorgan Chase & Co. (continued)
4.85%, 02/01/44	$	74	$	70,749
4.95%, 06/01/45(a)		214		203,476
(1-day SOFR + 0.77%), 1.47%, 09/22/27(b)		171		156,029
(1-day SOFR + 0.89%), 1.58%, 04/22/27(b)		875		811,225
(1-day SOFR + 1.02%), 2.07%, 06/01/29(b)		240		212,893
(1-day SOFR + 1.07%), 1.95%, 02/04/32(b)		341		277,826
(1-day SOFR + 1.17%), 2.95%, 02/24/28(b)		111		104,294
(1-day SOFR + 1.18%), 2.55%, 11/08/32(b)		276		229,661
(1-day SOFR + 1.19%), 5.04%, 01/23/28(b)		105		104,638
(1-day SOFR + 1.26%), 2.96%, 01/25/33(b)		403		344,093
(1-day SOFR + 1.31%), 5.01%, 01/23/30(a)(b)		225		224,078
(1-day SOFR + 1.32%), 4.08%, 04/26/26(b)		451		444,090
(1-day SOFR + 1.33%), 6.07%, 10/22/27(b)		195		198,964
(1-day SOFR + 1.45%), 5.30%, 07/24/29(b)		235		236,746
(1-day SOFR + 1.46%), 3.16%, 04/22/42(a)(b)		392		298,245
(1-day SOFR + 1.56%), 4.32%, 04/26/28(a)(b)		472		461,107
(1-day SOFR + 1.57%), 6.09%, 10/23/29(b)		185		192,328
(1-day SOFR + 1.58%), 3.33%, 04/22/52(b)		200		145,062
(1-day SOFR + 1.62%), 5.34%, 01/23/35(a)(b)		555		557,169
(1-day SOFR + 1.75%), 4.57%, 06/14/30(a)(b)		200		195,021
(1-day SOFR + 1.80%), 4.59%, 04/26/33(b)		267		255,830
(1-day SOFR + 1.81%), 6.25%, 10/23/34(a)(b)		655		699,797
(1-day SOFR + 1.85%), 2.08%, 04/22/26(b)		200		192,712
(1-day SOFR + 1.85%), 5.35%, 06/01/34(b)		445		446,717
(1-day SOFR + 1.99%), 4.85%, 07/25/28(a)(b)		200		198,313
(1-day SOFR + 2.04%), 2.52%, 04/22/31(a)(b)		275		237,677
(1-day SOFR + 2.08%), 4.91%, 07/25/33(a)(b)		445		435,719
(1-day SOFR + 2.44%), 3.11%, 04/22/51(b)		291		202,185
(1-day SOFR + 2.58%), 5.72%, 09/14/33(b)		200		203,992
(3-mo. CME Term SOFR + 0.70%), 1.04%, 02/04/27(b)		600		555,274
(3-mo. CME Term SOFR + 1.11%), 1.76%, 11/19/31(a)(b)		171		138,519
(3-mo. CME Term SOFR + 1.21%), 3.51%, 01/23/29(a)(b)		171		161,754
(3-mo. CME Term SOFR + 1.25%), 2.58%, 04/22/32(a)(b)		400		338,175
(3-mo. CME Term SOFR + 1.38%), 4.01%, 04/23/29(b)		381		365,196
(3-mo. CME Term SOFR + 1.42%), 3.70%, 05/06/30(b)		171		160,210
(3-mo. CME Term SOFR + 1.48%), 3.90%, 01/23/49(a)(b)		100		81,503
(3-mo. CME Term SOFR + 1.51%), 2.74%, 10/15/30(a)(b)		400		354,230
(3-mo. CME Term SOFR + 1.51%), 2.53%, 11/19/41(b)		257		179,345
(3-mo. CME Term SOFR + 1.52%), 4.20%, 07/23/29(a)(b)		202		194,743
(3-mo. CME Term SOFR + 1.59%), 4.45%, 12/05/29(a)(b)		427		416,265
(3-mo. CME Term SOFR + 1.60%), 3.78%, 02/01/28(b)		341		328,397
(3-mo. CME Term SOFR + 1.62%), 3.88%, 07/24/38(b)		171		147,830
(3-mo. CME Term SOFR + 1.64%), 3.54%, 05/01/28(b)		300		286,594
(3-mo. CME Term SOFR + 1.64%), 3.96%, 11/15/48(a)(b)		427		349,221
(3-mo. CME Term SOFR + 1.72%), 4.03%, 07/24/48(b)		87		72,082

Security	Par (000)		Value
Banks (continued)
JPMorgan Chase & Co. (continued)
(3-mo. CME Term SOFR + 1.84%), 4.26%, 02/22/48(a)(b)	$	171	$	147,609
(3-mo. CME Term SOFR + 2.46%), 3.11%, 04/22/41(a)(b)		189		144,011
(3-mo. CME Term SOFR + 2.52%), 2.96%, 05/13/31(b)		341		298,088
(3-mo. CME Term SOFR + 3.79%), 4.49%, 03/24/31(b)		341		329,681
JPMorgan Chase Bank NA, Class BN, 5.11%, 12/08/26		250		250,718
KeyBank NA/Cleveland OH
5.85%, 11/15/27(a)		250		247,933
5.00%, 01/26/33		250		231,735
KeyCorp.
2.25%, 04/06/27(a)		87		78,305
2.55%, 10/01/29(a)		87		73,520
(1-day SOFR Index + 2.06%), 4.79%, 06/01/33(b)		105		96,135
Kreditanstalt fuer Wiederaufbau
2.00%, 05/02/25(a)		341		330,120
0.63%, 01/22/26(a)		741		688,570
3.63%, 04/01/26(a)		1,500		1,469,433
3.00%, 05/20/27(a)		700		670,030
3.75%, 02/15/28		400		390,839
3.88%, 06/15/28		700		686,051
1.75%, 09/14/29		257		225,337
4.13%, 07/15/33		1,400		1,375,125
Landwirtschaftliche Rentenbank
2.38%, 06/10/25		341		330,566
0.88%, 09/03/30(a)		341		274,404
Series 40, 0.50%, 05/27/25		341		323,687
Lloyds Banking Group PLC
3.75%, 01/11/27(a)		1,000		962,635
4.34%, 01/09/48		249		198,364
(1-year CMT + 1.48%), 5.99%, 08/07/27(b)		250		252,355
(1-year CMT + 1.70%), 5.87%, 03/06/29(a)(b)		200		203,235
(1-year CMT + 1.80%), 3.75%, 03/18/28(b)		222		212,507
(1-year CMT + 2.30%), 4.98%, 08/11/33(b)		200		192,611
(1-year CMT + 3.75%), 7.95%, 11/15/33(b)		225		253,324
M&T Bank Corp.(b)
(1-day SOFR + 1.85%), 5.05%, 01/27/34(a)		200		185,937
(1-day SOFR Index + 1.78%), 4.55%, 08/16/28		100		95,472
Manufacturers & Traders Trust Co.
5.40%, 11/21/25		340		336,938
4.65%, 01/27/26		250		244,558
Mitsubishi UFJ Financial Group, Inc.
3.85%, 03/01/26		500		488,254
2.76%, 09/13/26		250		236,332
3.29%, 07/25/27(a)		171		162,248
3.96%, 03/02/28(a)		171		165,360
3.74%, 03/07/29(a)		341		324,328
2.56%, 02/25/30		349		304,432
4.29%, 07/26/38		87		80,527
(1-year CMT + 0.83%), 2.34%, 01/19/28(b)		220		204,034
(1-year CMT + 0.95%), 2.31%, 07/20/32(b)		200		166,277
(1-year CMT + 0.97%), 2.49%, 10/13/32(b)		215		179,703
(1-year CMT + 1.10%), 2.85%, 01/19/33(a)(b)		200		169,826
(1-year CMT + 1.13%), 3.84%, 04/17/26(a)(b)		220		216,133
(1-year CMT + 1.30%), 4.08%, 04/19/28(a)(b)		220		213,620
(1-year CMT + 1.90%), 5.35%, 09/13/28(b)		200		200,965
(1-year CMT + 1.95%), 5.02%, 07/20/28(b)		200		199,258

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 7

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Banks (continued)
Mitsubishi UFJ Financial Group, Inc. (continued)
(1-year CMT + 2.13%), 5.13%, 07/20/33(b)	$	250	$	250,398
(1-year CMT + 2.13%), 5.47%, 09/13/33(a)(b)		200		204,909
Mizuho Financial Group, Inc.(b)
(1-year CMT + 0.67%), 1.23%, 05/22/27		349		320,285
(1-year CMT + 0.90%), 2.65%, 05/22/26(a)		300		290,790
(1-year CMT + 1.25%), 3.26%, 05/22/30		380		346,855
(1-year CMT + 1.65%), 5.78%, 07/06/29		200		204,357
(1-year CMT + 1.90%), 5.75%, 07/06/34		200		206,531
(1-year CMT + 2.05%), 5.41%, 09/13/28(a)		520		524,385
(1-year CMT + 2.40%), 5.67%, 09/13/33		520		531,280
Morgan Stanley
4.00%, 07/23/25		343		337,327
5.00%, 11/24/25		214		212,677
3.88%, 01/27/26(a)		300		293,023
3.13%, 07/27/26		87		83,215
4.35%, 09/08/26(a)		257		251,452
3.63%, 01/20/27		341		329,373
3.95%, 04/23/27		87		83,999
3.59%, 07/22/28(b)		384		364,841
7.25%, 04/01/32(a)		50		57,038
3.97%, 07/22/38(b)		171		146,466
6.38%, 07/24/42(a)		181		204,283
4.30%, 01/27/45		171		150,155
4.38%, 01/22/47		257		225,336
(1-day SOFR + 0.72%), 0.99%, 12/10/26(b)		307		284,425
(1-day SOFR + 0.86%), 1.51%, 07/20/27(b)		326		299,203
(1-day SOFR + 0.88%), 1.59%, 05/04/27(b)		66		61,050
(1-day SOFR + 1.00%), 2.48%, 01/21/28(b)		244		226,975
(1-day SOFR + 1.02%), 1.93%, 04/28/32(b)		300		240,797
(1-day SOFR + 1.03%), 1.79%, 02/13/32(a)(b)		338		270,191
(1-day SOFR + 1.14%), 2.70%, 01/22/31(b)		341		297,927
(1-day SOFR + 1.18%), 2.24%, 07/21/32(a)(b)		387		316,135
(1-day SOFR + 1.20%), 2.51%, 10/20/32(b)		281		232,434
(1-day SOFR + 1.29%), 2.94%, 01/21/33(a)(b)		343		291,524
(1-day SOFR + 1.30%), 5.05%, 01/28/27(b)		105		104,596
(1-day SOFR + 1.36%), 2.48%, 09/16/36(b)		459		363,016
(1-day SOFR + 1.43%), 2.80%, 01/25/52(a)(b)		221		144,681
(1-day SOFR + 1.45%), 5.17%, 01/16/30(a)(b)		250		250,212
(1-day SOFR + 1.49%), 3.22%, 04/22/42(b)		535		409,187
(1-day SOFR + 1.59%), 5.16%, 04/20/29(a)(b)		255		254,794
(1-day SOFR + 1.61%), 4.21%, 04/20/28(a)(b)		646		627,739
(1-day SOFR + 1.63%), 5.45%, 07/20/29(b)		540		544,735
(1-day SOFR + 1.67%), 4.68%, 07/17/26(a)(b)		130		128,599
(1-day SOFR + 1.73%), 5.12%, 02/01/29(b)		95		94,768
(1-day SOFR + 1.73%), 5.47%, 01/18/35(a)(b)		300		302,682
(1-day SOFR + 1.77%), 6.14%, 10/16/26(b)		400		404,575
(1-day SOFR + 1.83%), 6.41%, 11/01/29(a)(b)		80		83,885
(1-day SOFR + 1.87%), 5.25%, 04/21/34(a)(b)		255		253,007
(1-day SOFR + 1.88%), 5.42%, 07/21/34(b)		340		341,054
(1-day SOFR + 1.99%), 2.19%, 04/28/26(b)		1,000		964,751
(1-day SOFR + 2.05%), 6.63%, 11/01/34(a)(b)		130		142,234
(1-day SOFR + 2.08%), 4.89%, 07/20/33(b)		70		67,892
(1-day SOFR + 2.24%), 6.30%, 10/18/28(b)		250		258,626
(1-day SOFR + 2.56%), 6.34%, 10/18/33(b)		200		213,989
(1-day SOFR + 2.62%), 5.30%, 04/20/37(b)		114		109,371
(1-day SOFR + 3.12%), 3.62%, 04/01/31(b)		400		366,849
(1-day SOFR + 4.84%), 5.60%, 03/24/51(b)		171		179,052
(3-mo. CME Term SOFR + 1.40%), 3.77%, 01/24/29(b)		410		390,269
(3-mo. CME Term SOFR + 1.69%), 4.46%, 04/22/39(a)(b)		211		191,881

Security	Par (000)		Value
Banks (continued)
Morgan Stanley (continued)
(3-mo. CME Term SOFR + 1.89%), 4.43%, 01/23/30(b)	$	130	$	125,894
(5-year CMT + 1.80%), 5.94%, 02/07/39(a)(b)		100		99,397
(5-year CMT + 2.43%), 5.95%, 01/19/38(b)		90		90,183
Morgan Stanley Bank NA
5.48%, 07/16/25		1,000		1,003,884
4.75%, 04/21/26		250		248,362
5.88%, 10/30/26		250		254,820
National Australia Bank Ltd./New York
5.20%, 05/13/25		1,000		1,000,197
3.38%, 01/14/26		400		388,447
4.90%, 06/13/28(a)		300		300,598
NatWest Group PLC(b)
(1-year CMT + 2.10%), 6.02%, 03/02/34		200		206,341
(1-year CMT + 2.85%), 7.47%, 11/10/26		500		513,564
(3-mo. LIBOR US + 1.91%), 5.08%, 01/27/30		450		442,174
(5-year CMT + 2.35%), 3.03%, 11/28/35		300		251,003
Northern Trust Corp.
4.00%, 05/10/27		102		99,372
3.65%, 08/03/28(a)		87		83,595
3.15%, 05/03/29		87		80,967
6.13%, 11/02/32(a)		130		137,322
Oesterreichische Kontrollbank AG
2.88%, 05/23/25		500		487,971
4.25%, 03/01/28		500		496,359
PNC Bank NA
3.88%, 04/10/25		250		245,726
4.05%, 07/26/28		300		285,861
PNC Financial Services Group, Inc.
1.15%, 08/13/26(a)		171		155,896
3.45%, 04/23/29		341		318,004
2.55%, 01/22/30(a)		671		585,552
(1-day SOFR + 0.98%), 2.31%, 04/23/32(a)(b)		171		140,643
(1-day SOFR + 1.32%), 5.81%, 06/12/26(b)		74		74,246
(1-day SOFR + 1.34%), 5.30%, 01/21/28(b)		35		35,040
(1-day SOFR + 1.62%), 5.35%, 12/02/28(b)		135		135,565
(1-day SOFR + 1.84%), 5.58%, 06/12/29(a)(b)		574		580,992
(1-day SOFR + 1.93%), 5.07%, 01/24/34(b)		205		198,584
(1-day SOFR + 1.95%), 5.94%, 08/18/34(a)(b)		100		102,601
(1-day SOFR + 2.28%), 6.88%, 10/20/34(a)(b)		295		323,034
(1-day SOFR Index + 1.09%), 4.76%, 01/26/27(a)(b)		230		227,849
(1-day SOFR Index + 1.73%), 6.62%, 10/20/27(b)		100		102,956
Regions Financial Corp.
2.25%, 05/18/25		341		327,861
1.80%, 08/12/28(a)		341		293,904
Royal Bank of Canada
3.38%, 04/14/25		1,079		1,057,842
4.95%, 04/25/25		1,080		1,076,271
4.88%, 01/12/26(a)		100		99,645
0.88%, 01/20/26(a)		341		317,062
4.65%, 01/27/26		121		119,592
1.20%, 04/27/26(a)		281		259,720
1.15%, 07/14/26(a)		171		156,606
5.20%, 07/20/26		75		75,241
1.40%, 11/02/26		76		69,417
4.88%, 01/19/27		50		49,891
3.63%, 05/04/27(a)		79		76,004
4.24%, 08/03/27(a)		100		97,720
6.00%, 11/01/27(a)		100		103,351

8  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Banks (continued)
Royal Bank of Canada (continued)
4.90%, 01/12/28	$	100	$	100,018
5.20%, 08/01/28		75		75,747
4.95%, 02/01/29(a)		50		50,120
2.30%, 11/03/31(a)		200		166,203
3.88%, 05/04/32		79		73,008
5.00%, 02/01/33		100		99,643
5.00%, 05/02/33(a)		80		79,697
5.15%, 02/01/34(a)		50		50,048
Series FXD, 2.05%, 01/21/27(a)		87		80,588
Santander Holdings USA, Inc.
3.24%, 10/05/26(a)		341		322,151
(1-day SOFR + 1.25%), 2.49%, 01/06/28(b)		140		127,234
(1-day SOFR + 2.33%), 5.81%, 09/09/26(b)		340		340,152
(1-day SOFR + 2.36%), 6.50%, 03/09/29(a)(b)		70		71,596
(1-day SOFR + 2.50%), 6.17%, 01/09/30(a)(b)		40		40,361
(1-day SOFR + 2.70%), 6.57%, 06/12/29(b)		28		28,829
(1-day SOFR + 3.28%), 7.66%, 11/09/31(a)(b)		50		54,347
Santander U.K. Group Holdings PLC(b)
(1-day SOFR + 1.22%), 2.47%, 01/11/28		200		183,794
(1-day SOFR + 2.60%), 6.53%, 01/10/29(a)		200		206,747
(1-day SOFR + 2.75%), 6.83%, 11/21/26		300		304,949
State Street Corp.
2.65%, 05/19/26		171		162,985
5.27%, 08/03/26(a)		100		100,539
4.99%, 03/18/27(a)		100		100,194
2.40%, 01/24/30(a)		75		66,012
(1-day SOFR + 0.56%), 1.68%, 11/18/27(a)(b)		155		142,452
(1-day SOFR + 0.73%), 2.20%, 02/07/28(a)(b)		61		56,551
(1-day SOFR + 1.00%), 2.62%, 02/07/33(a)(b)		67		56,265
(1-day SOFR + 1.13%), 5.10%, 05/18/26(b)		60		59,808
(1-day SOFR + 1.35%), 5.75%, 11/04/26(b)		45		45,301
(1-day SOFR + 1.48%), 5.68%, 11/21/29(a)(b)		100		102,698
(1-day SOFR + 1.49%), 3.03%, 11/01/34(b)		70		62,171
(1-day SOFR + 1.57%), 4.82%, 01/26/34(a)(b)		80		77,850
(1-day SOFR + 1.72%), 5.82%, 11/04/28(b)		60		61,752
(1-day SOFR + 1.73%), 4.16%, 08/04/33(b)		25		23,219
(1-day SOFR + 1.89%), 5.16%, 05/18/34(a)(b)		60		59,739
(1-day SOFR + 1.96%), 6.12%, 11/21/34(b)		50		52,124
(1-day SOFR + 2.65%), 3.15%, 03/30/31(b)		171		153,488
Sumitomo Mitsui Financial Group, Inc.
5.46%, 01/13/26		290		290,976
3.78%, 03/09/26		211		205,604
2.63%, 07/14/26(a)		171		162,018
1.40%, 09/17/26		218		199,278
3.01%, 10/19/26(a)		87		82,608
2.17%, 01/14/27		200		185,218
3.36%, 07/12/27(a)		171		162,459
3.35%, 10/18/27(a)		87		82,335
5.72%, 09/14/28(a)		200		205,635
1.90%, 09/17/28		218		191,006
3.04%, 07/16/29(a)		300		272,024
3.20%, 09/17/29		87		79,016
2.72%, 09/27/29		522		463,620
2.13%, 07/08/30		200		167,513
2.22%, 09/17/31		265		216,781
5.77%, 01/13/33		300		312,591
5.81%, 09/14/33(a)		200		209,663
2.93%, 09/17/41(a)		70		52,943
6.18%, 07/13/43(a)		100		110,867
Synchrony Bank, 5.63%, 08/23/27		250		245,312
Toronto-Dominion Bank
3.77%, 06/06/25		100		98,234

Security	Par (000)		Value
Banks (continued)
Toronto-Dominion Bank (continued)
0.75%, 01/06/26(a)	$	307	$	284,885
1.20%, 06/03/26		307		282,357
5.53%, 07/17/26(a)		75		75,654
1.25%, 09/10/26		189		172,456
5.26%, 12/11/26(a)		35		35,227
2.80%, 03/10/27		133		125,226
4.98%, 04/05/27(c)		100		99,851
4.11%, 06/08/27(a)		100		97,341
4.69%, 09/15/27(a)		200		198,093
5.52%, 07/17/28		75		76,596
4.99%, 04/05/29(c)		100		100,006
2.00%, 09/10/31		189		154,504
2.45%, 01/12/32(a)		87		72,476
3.20%, 03/10/32		133		117,046
4.46%, 06/08/32(a)		55		52,673
(5-year USD Swap + 2.21%), 3.63%, 09/15/31(b)		87		83,208
Series FXD, 1.95%, 01/12/27(a)		87		80,420
Truist Bank(a)
3.63%, 09/16/25		250		243,305
3.80%, 10/30/26		250		240,120
Truist Financial Corp.
1.13%, 08/03/27(a)		155		136,076
1.95%, 06/05/30(a)		141		116,446
(1-day SOFR + 0.86%), 1.89%, 06/07/29(a)(b)		171		148,432
(1-day SOFR + 1.37%), 4.12%, 06/06/28(a)(b)		65		62,775
(1-day SOFR + 1.44%), 4.87%, 01/26/29(a)(b)		280		275,355
(1-day SOFR + 1.46%), 4.26%, 07/28/26(a)(b)		100		98,374
(1-day SOFR + 1.62%), 5.44%, 01/24/30(b)		35		34,959
(1-day SOFR + 1.63%), 5.90%, 10/28/26(a)(b)		100		100,496
(1-day SOFR + 1.85%), 5.12%, 01/26/34(b)		130		125,129
(1-day SOFR + 1.92%), 5.71%, 01/24/35(a)(b)		35		35,151
(1-day SOFR + 2.05%), 6.05%, 06/08/27(a)(b)		55		55,742
(1-day SOFR + 2.24%), 4.92%, 07/28/33(a)(b)		100		93,134
(1-day SOFR + 2.30%), 6.12%, 10/28/33(a)(b)		100		103,337
(1-day SOFR + 2.36%), 5.87%, 06/08/34(b)		345		349,230
(1-day SOFR + 2.45%), 7.16%, 10/30/29(a)(b)		330		351,912
U.S. Bancorp
3.90%, 04/26/28(a)		341		328,157
1.38%, 07/22/30(a)		141		113,282
(1-day SOFR + 0.73%), 2.22%, 01/27/28(b)		87		80,249
(1-day SOFR + 1.02%), 2.68%, 01/27/33(a)(b)		87		71,942
(1-day SOFR + 1.23%), 4.65%, 02/01/29(a)(b)		150		147,011
(1-day SOFR + 1.43%), 5.73%, 10/21/26(a)(b)		70		70,379
(1-day SOFR + 1.60%), 4.84%, 02/01/34(b)		650		617,214
(1-day SOFR + 1.66%), 4.55%, 07/22/28(b)		160		156,814
(1-day SOFR + 1.88%), 6.79%, 10/26/27(b)		50		51,776
(1-day SOFR + 2.02%), 5.78%, 06/12/29(b)		55		55,960
(1-day SOFR + 2.09%), 5.85%, 10/21/33(b)		200		203,915
(1-day SOFR + 2.11%), 4.97%, 07/22/33(b)		425		401,747
(1-day SOFR + 2.26%), 5.84%, 06/12/34(b)		150		152,888
(5-year CMT + 0.95%), 2.49%, 11/03/36(b)		121		95,197
Series V, 2.38%, 07/22/26(a)		87		81,969
Series X, 3.15%, 04/27/27(a)		200		189,798
UBS Group AG
4.55%, 04/17/26		250		245,990
4.88%, 05/15/45		268		249,099
Wachovia Corp., 5.50%, 08/01/35(a)		100		100,774
Wells Fargo & Co.
3.55%, 09/29/25		171		166,757
3.00%, 04/22/26(a)		300		286,902
4.10%, 06/03/26		345		335,802
3.00%, 10/23/26		300		283,991

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 9

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Banks (continued)
Wells Fargo & Co. (continued)
4.30%, 07/22/27	$	257	$	250,333
4.15%, 01/24/29(a)		171		164,785
5.38%, 11/02/43(a)		155		149,696
5.61%, 01/15/44		214		210,816
4.65%, 11/04/44(a)		270		235,937
3.90%, 05/01/45(a)		197		160,703
4.90%, 11/17/45(a)		257		231,199
4.40%, 06/14/46		244		203,029
4.75%, 12/07/46(a)		275		241,231
(1-day SOFR + 1.32%), 3.91%, 04/25/26(b)		274		268,920
(1-day SOFR + 1.50%), 5.20%, 01/23/30(a)(b)		425		424,104
(1-day SOFR + 1.50%), 3.35%, 03/02/33(a)(b)		387		335,772
(1-day SOFR + 1.51%), 3.53%, 03/24/28(b)		563		535,857
(1-day SOFR + 1.56%), 4.54%, 08/15/26(a)(b)		155		153,021
(1-day SOFR + 1.74%), 5.57%, 07/25/29(b)		530		536,282
(1-day SOFR + 1.78%), 5.50%, 01/23/35(a)(b)		390		390,918
(1-day SOFR + 1.79%), 6.30%, 10/23/29(b)		185		192,685
(1-day SOFR + 1.98%), 4.81%, 07/25/28(a)(b)		210		206,917
(1-day SOFR + 1.99%), 5.56%, 07/25/34(b)		490		491,892
(1-day SOFR + 2.00%), 2.19%, 04/30/26(b)		511		492,108
(1-day SOFR + 2.02%), 5.39%, 04/24/34(b)		465		462,104
(1-day SOFR + 2.06%), 6.49%, 10/23/34(b)		215		230,603
(1-day SOFR + 2.10%), 2.39%, 06/02/28(b)		355		324,933
(1-day SOFR + 2.10%), 4.90%, 07/25/33(b)		500		481,829
(1-day SOFR + 2.13%), 4.61%, 04/25/53(b)		239		211,181
(1-day SOFR + 2.53%), 3.07%, 04/30/41(b)		341		255,141
(3-mo. CME Term SOFR + 1.26%), 2.57%, 02/11/31(b)		257		221,538
(3-mo. CME Term SOFR + 1.43%), 3.20%, 06/17/27(b)		229		218,668
(3-mo. CME Term SOFR + 1.43%), 2.88%, 10/30/30(a)(b)		341		301,442
(3-mo. CME Term SOFR + 1.57%), 3.58%, 05/22/28(a)(b)		257		244,333
(3-mo. CME Term SOFR + 4.03%), 4.48%, 04/04/31(b)		341		326,513
(3-mo. CME Term SOFR + 4.50%), 5.01%, 04/04/51(a)(b)		533		500,423
Wells Fargo Bank NA
5.55%, 08/01/25		500		502,339
5.45%, 08/07/26		500		503,360
5.25%, 12/11/26		250		250,972
6.60%, 01/15/38(a)		250		273,029
Westpac Banking Corp.
5.51%, 11/17/25		100		100,719
2.85%, 05/13/26(a)		87		83,398
1.15%, 06/03/26		171		157,661
4.04%, 08/26/27(a)		100		98,012
5.46%, 11/18/27(a)		250		255,028
3.40%, 01/25/28(a)		87		82,745
5.54%, 11/17/28(a)		100		102,770
1.95%, 11/20/28		171		150,891
2.65%, 01/16/30		138		123,359
2.15%, 06/03/31		240		200,768
6.82%, 11/17/33(a)		55		59,777
4.42%, 07/24/39(a)		171		150,549
3.13%, 11/18/41		59		41,704
(1-year CMT + 2.68%), 5.41%, 08/10/33(a)(b)		100		99,090
(5-year CMT + 1.53%), 3.02%, 11/18/36(b)		81		66,536

Security	Par (000)		Value
Banks (continued)
Westpac Banking Corp. (continued)
(5-year CMT + 1.75%), 2.67%, 11/15/35(b)	$	237	$	195,482
(5-year CMT + 2.00%), 4.11%, 07/24/34(b)		150		138,549
(5-year USD ICE Swap + 2.24%), 4.32%, 11/23/31(b)		130		125,459
				172,163,226
Beverages — 0.5%
Anheuser-Busch Cos. LLC/Anheuser-Busch InBev Worldwide, Inc.
3.65%, 02/01/26		115		112,377
4.70%, 02/01/36(a)		597		577,191
4.90%, 02/01/46		882		838,174
Anheuser-Busch InBev Finance, Inc.
4.70%, 02/01/36		100		96,682
4.63%, 02/01/44		112		103,111
4.90%, 02/01/46		87		81,699
Anheuser-Busch InBev Worldwide, Inc.
4.00%, 04/13/28(a)		171		166,793
4.75%, 01/23/29(a)		597		596,826
3.50%, 06/01/30(a)		297		276,648
5.00%, 06/15/34		65		65,387
4.38%, 04/15/38(a)		171		158,920
8.20%, 01/15/39		197		255,606
5.45%, 01/23/39		171		176,556
4.35%, 06/01/40		171		154,792
4.95%, 01/15/42		87		84,506
4.60%, 04/15/48		51		46,605
4.44%, 10/06/48		209		185,964
5.55%, 01/23/49(a)		600		625,583
4.75%, 04/15/58(a)		150		138,378
5.80%, 01/23/59(a)		271		291,467
Brown-Forman Corp.(a)
4.75%, 04/15/33		40		39,593
4.00%, 04/15/38		87		77,403
Coca-Cola Co.
2.90%, 05/25/27		87		82,815
1.50%, 03/05/28(a)		171		152,835
2.13%, 09/06/29(a)		171		151,649
3.45%, 03/25/30(a)		87		81,790
2.00%, 03/05/31(a)		158		133,631
2.25%, 01/05/32(a)		291		247,883
2.50%, 06/01/40(a)		171		124,243
2.88%, 05/05/41(a)		87		65,775
2.60%, 06/01/50(a)		171		111,814
3.00%, 03/05/51(a)		140		99,565
2.50%, 03/15/51(a)		257		162,600
2.75%, 06/01/60(a)		75		48,681
Coca-Cola Femsa SAB de CV
2.75%, 01/22/30		150		133,031
1.85%, 09/01/32		218		169,031
Constellation Brands, Inc.
4.75%, 12/01/25(a)		171		169,378
3.70%, 12/06/26(a)		130		125,410
3.50%, 05/09/27(a)		171		163,174
4.80%, 01/15/29		25		24,781
3.15%, 08/01/29		171		155,749
2.25%, 08/01/31		326		269,271
4.90%, 05/01/33(a)		60		58,859
4.10%, 02/15/48(a)		87		70,853

10  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Beverages (continued)
Constellation Brands, Inc. (continued)
3.75%, 05/01/50(a)	$	87	$	66,887
Diageo Capital PLC
5.20%, 10/24/25(a)		200		200,150
5.38%, 10/05/26		200		201,899
5.50%, 01/24/33		200		207,442
5.63%, 10/05/33		200		210,375
3.88%, 04/29/43(a)		194		165,470
Diageo Investment Corp., 4.25%, 05/11/42(a)		87		78,200
Keurig Dr Pepper, Inc.(a)
5.10%, 03/15/27		50		50,074
5.05%, 03/15/29		50		50,144
5.30%, 03/15/34		50		50,172
Series 10, 5.20%, 03/15/31		50		50,119
Keurig Dr. Pepper, Inc.
4.42%, 05/25/25(a)		60		59,355
3.95%, 04/15/29		65		62,074
3.20%, 05/01/30		87		78,366
4.05%, 04/15/32(a)		71		66,160
4.50%, 11/15/45		100		87,498
4.42%, 12/15/46		87		74,287
3.80%, 05/01/50		87		66,611
3.35%, 03/15/51(a)		87		61,073
4.50%, 04/15/52(a)		72		61,714
Series 31, 2.25%, 03/15/31(a)		87		72,495
Molson Coors Beverage Co.
3.00%, 07/15/26		200		190,891
5.00%, 05/01/42		100		94,679
4.20%, 07/15/46(a)		187		156,253
Pepsico Singapore Financing I Pte Ltd.
4.65%, 02/16/27		50		49,725
4.55%, 02/16/29(a)		50		49,643
4.70%, 02/16/34		50		49,367
PepsiCo, Inc.
2.75%, 04/30/25		171		166,736
3.50%, 07/17/25		87		85,237
5.25%, 11/10/25		75		75,433
4.55%, 02/13/26		60		59,704
2.85%, 02/24/26(a)		87		83,992
2.38%, 10/06/26(a)		171		161,525
5.13%, 11/10/26		75		75,595
3.00%, 10/15/27(a)		87		82,410
3.60%, 02/18/28		50		48,298
4.45%, 05/15/28(a)		60		59,972
2.63%, 07/29/29(a)		171		155,370
2.75%, 03/19/30		341		307,022
1.63%, 05/01/30(a)		104		87,311
1.40%, 02/25/31		206		166,431
1.95%, 10/21/31(a)		169		140,462
3.90%, 07/18/32(a)		70		66,363
4.45%, 02/15/33(a)		60		60,132
2.63%, 10/21/41		87		63,213
4.45%, 04/14/46(a)		300		273,903
3.45%, 10/06/46(a)		89		69,639
3.38%, 07/29/49(a)		75		57,076
2.88%, 10/15/49(a)		87		60,599
3.63%, 03/19/50		121		96,608
2.75%, 10/21/51		257		171,504

Security	Par (000)		Value
Beverages (continued)
PepsiCo, Inc. (continued)
4.20%, 07/18/52(a)	$	25	$	21,837
4.65%, 02/15/53(a)		60		56,351
				13,316,925
Biotechnology — 0.3%
Amgen, Inc.
3.13%, 05/01/25		130		126,866
2.60%, 08/19/26(a)		124		117,424
5.15%, 03/02/28		330		332,115
4.05%, 08/18/29(a)		330		317,191
5.25%, 03/02/30		345		350,243
2.00%, 01/15/32		240		194,313
3.35%, 02/22/32		73		65,181
4.20%, 03/01/33		330		308,445
5.25%, 03/02/33(a)		365		368,070
3.15%, 02/21/40		171		131,389
2.80%, 08/15/41(a)		189		136,932
4.95%, 10/01/41		341		323,567
5.15%, 11/15/41		87		84,049
5.60%, 03/02/43(a)		330		335,750
4.56%, 06/15/48		87		76,669
3.38%, 02/21/50(a)		171		124,812
4.66%, 06/15/51		300		265,711
3.00%, 01/15/52(a)		240		162,518
4.20%, 02/22/52		60		49,351
4.88%, 03/01/53		55		50,074
5.65%, 03/02/53(a)		445		453,435
2.77%, 09/01/53(a)		71		43,970
4.40%, 02/22/62(a)		275		226,563
5.75%, 03/02/63(a)		310		316,184
Baxalta, Inc.(a)
4.00%, 06/23/25		240		236,077
5.25%, 06/23/45		78		76,135
Biogen, Inc.
4.05%, 09/15/25		103		101,083
2.25%, 05/01/30		138		116,488
3.15%, 05/01/50(a)		193		129,074
3.25%, 02/15/51(a)		104		71,927
Bio-Rad Laboratories, Inc.
3.30%, 03/15/27		60		56,896
3.70%, 03/15/32		67		60,243
Gilead Sciences, Inc.
3.65%, 03/01/26		227		221,165
2.95%, 03/01/27(a)		87		82,720
1.20%, 10/01/27(a)		62		54,908
1.65%, 10/01/30(a)		183		150,746
5.25%, 10/15/33		50		51,023
4.60%, 09/01/35(a)		231		221,340
2.60%, 10/01/40(a)		100		70,572
5.65%, 12/01/41		181		186,255
4.80%, 04/01/44		189		175,948
4.75%, 03/01/46		257		236,030
4.15%, 03/01/47(a)		197		165,475
2.80%, 10/01/50(a)		200		130,368
5.55%, 10/15/53(a)		45		46,579
Illumina, Inc.
5.80%, 12/12/25		100		100,167
5.75%, 12/13/27		100		101,155
2.55%, 03/23/31		55		45,460

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 11

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Biotechnology (continued)
Regeneron Pharmaceuticals, Inc.
1.75%, 09/15/30	$	140	$	114,577
2.80%, 09/15/50		144		90,686
Royalty Pharma PLC
1.20%, 09/02/25		171		160,952
1.75%, 09/02/27(a)		257		229,505
2.15%, 09/02/31		59		47,551
3.30%, 09/02/40(a)		171		127,433
3.35%, 09/02/51(a)		87		57,226
				8,676,586
Broadline Retail — 0.2%
Alibaba Group Holding Ltd.
3.40%, 12/06/27(a)		200		189,204
2.13%, 02/09/31(a)		200		166,228
4.50%, 11/28/34(a)		250		236,542
2.70%, 02/09/41(a)		200		140,166
4.20%, 12/06/47(a)		249		204,730
3.15%, 02/09/51		284		189,147
Amazon.com, Inc.
1.00%, 05/12/26		291		268,719
3.30%, 04/13/27(a)		250		240,459
1.20%, 06/03/27		341		306,544
1.65%, 05/12/28		291		259,840
3.45%, 04/13/29(a)		238		227,156
4.65%, 12/01/29(a)		400		402,217
1.50%, 06/03/30		211		176,084
2.10%, 05/12/31(a)		341		289,183
3.60%, 04/13/32		354		329,685
4.70%, 12/01/32(a)		400		401,533
4.80%, 12/05/34(a)		104		104,840
3.88%, 08/22/37		171		154,368
2.88%, 05/12/41		240		182,676
4.95%, 12/05/44(a)		87		87,102
4.05%, 08/22/47		400		348,530
2.50%, 06/03/50(a)		171		109,137
3.10%, 05/12/51(a)		200		143,640
3.95%, 04/13/52(a)		354		297,142
4.25%, 08/22/57(a)		341		296,854
2.70%, 06/03/60(a)		171		105,981
3.25%, 05/12/61		121		84,976
4.10%, 04/13/62(a)		121		101,909
TJX Cos., Inc.
2.25%, 09/15/26		257		242,189
4.50%, 04/15/50(a)		87		80,512
				6,367,293
Building Products — 0.3%
Allegion PLC, 3.50%, 10/01/29		87		80,214
Carlisle Cos., Inc.(a)
2.75%, 03/01/30		189		166,077
2.20%, 03/01/32		75		60,190
Home Depot, Inc.
2.70%, 04/15/25		86		83,852
3.35%, 09/15/25(a)		1,257		1,228,820
4.00%, 09/15/25		65		64,105
2.13%, 09/15/26		87		81,594
4.95%, 09/30/26(a)		50		50,081
2.50%, 04/15/27(a)		140		131,184
2.88%, 04/15/27		79		74,952
2.80%, 09/14/27(a)		87		81,958
0.90%, 03/15/28(a)		117		101,662
1.50%, 09/15/28(a)		87		76,244

Security	Par (000)		Value
Building Products (continued)
Home Depot, Inc. (continued)
3.90%, 12/06/28(a)	$	78	$	75,730
4.90%, 04/15/29(a)		50		50,486
2.95%, 06/15/29		102		93,800
2.70%, 04/15/30(a)		75		66,805
1.38%, 03/15/31(a)		275		219,822
1.88%, 09/15/31(a)		87		71,042
3.25%, 04/15/32		266		237,747
4.50%, 09/15/32(a)		200		196,381
5.88%, 12/16/36		74		79,472
3.30%, 04/15/40		189		150,248
5.40%, 09/15/40		87		88,523
5.95%, 04/01/41		87		93,424
4.20%, 04/01/43		130		113,269
4.88%, 02/15/44		100		94,942
4.40%, 03/15/45		214		190,131
4.25%, 04/01/46		171		148,132
3.90%, 06/15/47		171		139,762
4.50%, 12/06/48		171		152,235
3.13%, 12/15/49		104		72,772
2.38%, 03/15/51(a)		155		92,146
2.75%, 09/15/51(a)		87		56,063
3.63%, 04/15/52		177		135,185
4.95%, 09/15/52(a)		80		76,746
Lowe’s Cos., Inc.
4.00%, 04/15/25(a)		171		168,673
4.40%, 09/08/25		60		59,264
3.38%, 09/15/25(a)		87		84,761
4.80%, 04/01/26		60		59,656
2.50%, 04/15/26		164		155,958
3.35%, 04/01/27		75		71,661
3.10%, 05/03/27(a)		300		284,498
1.30%, 04/15/28(a)		146		127,260
1.70%, 09/15/28		97		84,806
3.65%, 04/05/29(a)		87		82,503
4.50%, 04/15/30(a)		171		167,205
1.70%, 10/15/30(a)		79		64,551
2.63%, 04/01/31(a)		171		147,142
3.75%, 04/01/32(a)		403		370,178
5.00%, 04/15/33(a)		100		99,607
5.15%, 07/01/33(a)		75		75,582
5.00%, 04/15/40(a)		171		163,832
2.80%, 09/15/41(a)		72		51,176
4.38%, 09/15/45		171		146,655
3.70%, 04/15/46(a)		227		173,743
4.05%, 05/03/47		150		120,796
3.00%, 10/15/50		211		138,205
3.50%, 04/01/51		171		122,128
4.25%, 04/01/52		67		54,893
5.63%, 04/15/53		20		20,200
4.45%, 04/01/62		75		61,244
5.80%, 09/15/62(a)		120		122,961
5.85%, 04/01/63(a)		110		113,466
				8,368,400
Capital Markets — 0.3%
Ameriprise Financial, Inc.
2.88%, 09/15/26		87		82,762
5.70%, 12/15/28		25		25,790
5.15%, 05/15/33(a)		50		50,520
Ares Capital Corp.
3.25%, 07/15/25		151		145,868
3.88%, 01/15/26		171		165,398

12  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Capital Markets (continued)
Ares Capital Corp. (continued)
2.88%, 06/15/28	$	178	$	158,645
5.88%, 03/01/29(a)		235		234,297
3.20%, 11/15/31		87		72,560
Bain Capital Specialty Finance, Inc., 2.55%, 10/13/26		70		64,242
Blackstone Private Credit Fund
7.05%, 09/29/25(a)		100		101,492
2.63%, 12/15/26		75		68,432
3.25%, 03/15/27(a)		206		190,122
7.30%, 11/27/28(d)		25		26,065
6.25%, 01/25/31(a)(d)		25		25,105
Blackstone Secured Lending Fund, 2.85%, 09/30/28(a)		210		185,151
Blue Owl Capital Corp.
3.75%, 07/22/25		67		64,995
3.40%, 07/15/26		171		161,101
2.63%, 01/15/27		75		68,502
Blue Owl Capital Corp. III, 3.13%, 04/13/27(a)		70		63,726
Blue Owl Credit Income Corp.
4.70%, 02/08/27		40		37,947
7.75%, 01/15/29(a)(d)		200		205,980
6.65%, 03/15/31(d)		40		39,034
Brookfield Finance I U.K. PLC/Brookfield Finance, Inc., 2.34%, 01/30/32(a)		86		69,893
Brookfield Finance, Inc.
4.25%, 06/02/26(a)		171		167,910
3.90%, 01/25/28		181		174,283
4.35%, 04/15/30		87		83,066
2.72%, 04/15/31(a)		107		91,091
6.35%, 01/05/34		250		265,952
4.70%, 09/20/47		87		75,287
3.50%, 03/30/51		79		56,940
3.63%, 02/15/52(a)		61		44,300
5.97%, 03/04/54(a)		25		25,860
Charles Schwab Corp.
3.63%, 04/01/25(a)		171		168,041
3.85%, 05/21/25(a)		171		168,144
0.90%, 03/11/26(a)		289		266,325
1.15%, 05/13/26		141		129,987
5.88%, 08/24/26		40		40,667
2.45%, 03/03/27(a)		82		76,415
3.20%, 01/25/28(a)		171		160,547
2.00%, 03/20/28(a)		140		125,465
3.25%, 05/22/29(a)		70		64,797
1.65%, 03/11/31(a)		87		69,653
2.30%, 05/13/31(a)		171		143,586
2.90%, 03/03/32		140		120,039
(1-day SOFR + 1.88%), 6.20%, 11/17/29(a)(b)		100		103,940
(1-day SOFR + 2.50%), 5.85%, 05/19/34(b)		300		307,214
CI Financial Corp.(a)
3.20%, 12/17/30		104		85,185
4.10%, 06/15/51		86		53,720
Franklin Resources, Inc., 2.95%, 08/12/51(a)		75		46,924
FS KKR Capital Corp.
2.63%, 01/15/27(a)		71		64,408
3.25%, 07/15/27		87		79,213
3.13%, 10/12/28(a)		87		76,004
Golub Capital BDC, Inc.
2.50%, 08/24/26		70		64,315
6.00%, 07/15/29		200		196,424

Security	Par (000)		Value
Capital Markets (continued)
Invesco Finance PLC, 5.38%, 11/30/43	$	87	$	84,868
Jefferies Financial Group, Inc.
4.85%, 01/15/27(a)		171		169,650
5.88%, 07/21/28		120		122,158
4.15%, 01/23/30		171		160,169
2.63%, 10/15/31		71		58,502
2.75%, 10/15/32(a)		141		114,534
Lazard Group LLC, 4.50%, 09/19/28(a)		100		96,256
Legg Mason, Inc., 5.63%, 01/15/44(a)		109		109,018
Main Street Capital Corp.
3.00%, 07/14/26		70		65,227
6.95%, 03/01/29(a)		25		25,395
Nasdaq, Inc.
3.85%, 06/30/26		104		101,186
5.35%, 06/28/28		80		81,032
1.65%, 01/15/31(a)		57		45,889
5.55%, 02/15/34		100		101,687
3.25%, 04/28/50		70		48,783
6.10%, 06/28/63(a)		200		213,258
Nomura Holdings, Inc.
1.65%, 07/14/26		200		183,905
2.33%, 01/22/27		222		204,640
2.17%, 07/14/28(a)		400		351,973
2.71%, 01/22/29		222		197,235
5.61%, 07/06/29		200		202,450
3.10%, 01/16/30		200		177,583
2.61%, 07/14/31		200		166,259
Oaktree Specialty Lending Corp., 7.10%, 02/15/29(a)		100		103,256
Prospect Capital Corp.
3.36%, 11/15/26(a)		82		74,648
3.44%, 10/15/28		75		64,602
Raymond James Financial, Inc., 4.95%, 07/15/46		87		80,031
Stifel Financial Corp., 4.00%, 05/15/30(a)		100		91,223
				9,398,746
Chemicals — 0.3%
Air Products and Chemicals, Inc.
1.50%, 10/15/25(a)		102		96,706
1.85%, 05/15/27(a)		73		67,025
4.60%, 02/08/29(a)		100		99,442
2.05%, 05/15/30		75		64,197
4.75%, 02/08/31		100		99,639
4.80%, 03/03/33(a)		70		69,623
4.85%, 02/08/34		100		98,936
2.70%, 05/15/40(a)		87		63,509
2.80%, 05/15/50(a)		111		74,514
Albemarle Corp., 5.45%, 12/01/44(a)		60		55,473
Cabot Corp., 5.00%, 06/30/32		100		97,636
Celanese U.S. Holdings LLC
1.40%, 08/05/26(a)		70		63,816
6.17%, 07/15/27		200		203,702
6.35%, 11/15/28		90		93,236
6.33%, 07/15/29(a)		165		171,097
6.55%, 11/15/30(a)		100		105,182
6.38%, 07/15/32		70		72,619
6.70%, 11/15/33(a)		55		58,642
CF Industries, Inc.(a)
5.15%, 03/15/34		87		85,613
4.95%, 06/01/43		87		77,849
5.38%, 03/15/44		87		81,837

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 13

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Chemicals (continued)
Dow Chemical Co.
4.80%, 11/30/28(a)	$	75	$	74,816
6.30%, 03/15/33(a)		50		53,883
5.15%, 02/15/34(a)		25		24,911
9.40%, 05/15/39		69		92,916
5.25%, 11/15/41		74		70,375
4.38%, 11/15/42		87		74,342
5.55%, 11/30/48		171		166,957
4.80%, 05/15/49		100		88,039
3.60%, 11/15/50		87		63,384
6.90%, 05/15/53(a)		150		173,319
5.60%, 02/15/54(a)		125		124,507
DuPont de Nemours, Inc.
4.73%, 11/15/28(a)		257		256,639
5.32%, 11/15/38(a)		130		129,921
5.42%, 11/15/48		257		256,796
Eastman Chemical Co.
4.50%, 12/01/28(a)		71		69,049
5.75%, 03/08/33(a)		40		40,678
4.80%, 09/01/42		87		76,379
4.65%, 10/15/44(a)		71		60,421
Ecolab, Inc.
5.25%, 01/15/28		75		76,416
4.80%, 03/24/30(a)		87		87,422
1.30%, 01/30/31(a)		140		111,970
2.13%, 02/01/32(a)		171		142,016
2.13%, 08/15/50(a)		140		82,101
2.70%, 12/15/51(a)		124		80,178
EIDP, Inc.
1.70%, 07/15/25		140		133,636
2.30%, 07/15/30(a)		140		120,469
FMC Corp.
5.15%, 05/18/26		40		39,746
3.20%, 10/01/26(a)		55		51,973
3.45%, 10/01/29		60		54,015
5.65%, 05/18/33(a)		40		39,336
4.50%, 10/01/49(a)		58		44,607
6.38%, 05/18/53(a)		40		39,820
Huntsman International LLC, 2.95%, 06/15/31(a)		65		54,107
International Flavors & Fragrances, Inc.
4.45%, 09/26/28		87		84,192
4.38%, 06/01/47		87		67,171
5.00%, 09/26/48		87		74,379
Linde, Inc.(a)
4.70%, 12/05/25		100		99,537
3.20%, 01/30/26		87		84,331
1.10%, 08/10/30		155		125,328
2.00%, 08/10/50		122		69,025
LYB International Finance BV
5.25%, 07/15/43		75		70,289
4.88%, 03/15/44		62		54,882
LYB International Finance III LLC
1.25%, 10/01/25		74		69,471
2.25%, 10/01/30(a)		117		98,572
5.63%, 05/15/33		40		40,972
5.50%, 03/01/34		75		75,139
3.38%, 10/01/40		94		70,419
4.20%, 10/15/49		144		112,334
4.20%, 05/01/50(a)		87		68,055
3.63%, 04/01/51		127		89,942
3.80%, 10/01/60(a)		70		48,590

Security	Par (000)		Value
Chemicals (continued)
Mosaic Co.(a)
4.05%, 11/15/27	$	171	$	164,950
5.38%, 11/15/28		50		50,601
5.45%, 11/15/33		214		213,933
Nutrien Ltd.
3.00%, 04/01/25		87		84,828
5.95%, 11/07/25(a)		100		100,817
4.00%, 12/15/26(a)		87		84,342
4.90%, 03/27/28(a)		30		29,841
2.95%, 05/13/30(a)		171		152,434
4.90%, 06/01/43		87		78,975
5.25%, 01/15/45		50		47,146
5.00%, 04/01/49		130		118,615
3.95%, 05/13/50(a)		87		67,860
5.80%, 03/27/53		25		25,525
PPG Industries, Inc.
1.20%, 03/15/26		74		68,601
2.80%, 08/15/29(a)		171		154,424
Rohm and Haas Co., 7.85%, 07/15/29		125		139,190
RPM International, Inc.(a)
2.95%, 01/15/32		86		72,787
5.25%, 06/01/45		87		82,292
Sherwin-Williams Co.
4.25%, 08/08/25(a)		35		34,484
3.95%, 01/15/26(a)		87		85,029
3.45%, 06/01/27		87		83,163
2.95%, 08/15/29(a)		108		97,969
2.20%, 03/15/32		189		153,899
4.50%, 06/01/47(a)		171		149,426
3.80%, 08/15/49		153		120,606
Westlake Corp.
3.60%, 08/15/26(a)		87		83,609
3.38%, 06/15/30		75		67,309
5.00%, 08/15/46(a)		130		116,162
3.13%, 08/15/51(a)		110		71,231
				9,158,113
Commercial Services & Supplies — 0.1%
California Endowment, Series 2021, 2.50%, 04/01/51		84		52,886
Cintas Corp. No. 2
3.45%, 05/01/25(a)		86		84,291
3.70%, 04/01/27(a)		87		84,516
4.00%, 05/01/32		61		57,541
Ford Foundation
Series 2020, 2.42%, 06/01/50		60		37,874
Series 2020, 2.82%, 06/01/70		70		42,792
GATX Corp.
3.25%, 09/15/26(a)		130		124,068
3.85%, 03/30/27		87		83,792
4.70%, 04/01/29(a)		171		167,644
4.90%, 03/15/33(a)		145		139,547
5.45%, 09/15/33		100		99,461
6.05%, 03/15/34		50		51,464
6.90%, 05/01/34(a)		25		27,270
Quanta Services, Inc.
2.90%, 10/01/30(a)		90		78,690
2.35%, 01/15/32		80		65,006
3.05%, 10/01/41		69		49,297
Rockefeller Foundation, Series 2020, 2.49%, 10/01/50		71		45,590
UL Solutions, Inc., 6.50%, 10/20/28(d)		25		25,912

14  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Commercial Services & Supplies (continued)
Veralto Corp.(d)
5.50%, 09/18/26	$	75	$	75,294
5.35%, 09/18/28		75		75,973
5.45%, 09/18/33(a)		75		75,928
				1,544,836
Communications Equipment — 0.1%
Cisco Systems, Inc.
3.50%, 06/15/25		1,000		983,160
4.90%, 02/26/26(a)		95		95,069
2.95%, 02/28/26(a)		257		248,033
2.50%, 09/20/26(a)		171		161,992
4.80%, 02/26/27(a)		150		150,241
4.85%, 02/26/29		150		151,107
4.95%, 02/26/31		115		116,015
5.05%, 02/26/34		610		618,213
5.90%, 02/15/39		341		370,772
5.30%, 02/26/54(a)		85		87,251
5.35%, 02/26/64		90		92,237
Juniper Networks, Inc.
3.75%, 08/15/29(a)		87		80,992
5.95%, 03/15/41		87		87,638
Motorola Solutions, Inc.
4.60%, 02/23/28(a)		87		85,807
5.00%, 04/15/29		25		24,873
4.60%, 05/23/29(a)		166		162,699
2.30%, 11/15/30(a)		146		122,555
2.75%, 05/24/31(a)		102		86,439
5.40%, 04/15/34		175		174,654
				3,899,747
Construction Materials — 0.1%
Carrier Global Corp.
5.80%, 11/30/25		140		140,929
2.49%, 02/15/27		77		71,744
2.72%, 02/15/30(a)		200		176,863
5.90%, 03/15/34		100		105,100
3.38%, 04/05/40		171		133,877
3.58%, 04/05/50(a)		300		223,591
6.20%, 03/15/54(a)		100		110,112
Eagle Materials, Inc., 2.50%, 07/01/31(a)		67		56,311
Fortune Brands Innovations, Inc.
4.00%, 06/15/25		171		167,657
3.25%, 09/15/29		87		79,229
5.88%, 06/01/33(a)		38		38,771
4.50%, 03/25/52(a)		87		71,468
Johnson Controls International PLC
5.13%, 09/14/45		15		14,061
4.50%, 02/15/47(a)		87		74,982
4.95%, 07/02/64(e)		64		57,561
Johnson Controls International PLC/Tyco Fire & Security Finance SCA
1.75%, 09/15/30		70		57,584
2.00%, 09/16/31(a)		121		98,219
4.90%, 12/01/32		65		63,939
Martin Marietta Materials, Inc.
3.45%, 06/01/27		87		83,226
2.40%, 07/15/31(a)		58		48,580
4.25%, 12/15/47(a)		87		73,406
3.20%, 07/15/51		75		52,474
Series CB, 2.50%, 03/15/30(a)		171		149,107
Masco Corp.(a)
1.50%, 02/15/28		65		56,913

Security	Par (000)		Value
Construction Materials (continued)
Masco Corp.(a) (continued)
2.00%, 02/15/31	$	87	$	71,153
3.13%, 02/15/51		73		49,379
Mohawk Industries, Inc.(a)
5.85%, 09/18/28		50		51,475
3.63%, 05/15/30		75		69,183
Owens Corning
3.88%, 06/01/30		75		70,045
4.40%, 01/30/48		171		141,918
Trane Technologies Financing Ltd.
4.65%, 11/01/44(a)		30		27,324
4.50%, 03/21/49		87		76,773
Trane Technologies Global Holding Co. Ltd.,
4.30%, 02/21/48		87		74,735
Vulcan Materials Co.
3.90%, 04/01/27(a)		171		165,712
4.50%, 06/15/47		87		75,633
				3,079,034
Consumer Finance — 0.6%
Ally Financial, Inc.(a)
4.75%, 06/09/27		340		330,286
7.10%, 11/15/27		100		104,486
8.00%, 11/01/31		321		356,567
(1-day SOFR + 2.82%), 6.85%, 01/03/30(b)		50		51,458
American Express Co.
3.95%, 08/01/25		100		98,257
4.90%, 02/13/26(a)		200		199,073
3.13%, 05/20/26(a)		150		144,212
1.65%, 11/04/26		171		156,780
2.55%, 03/04/27(a)		392		366,113
3.30%, 05/03/27(a)		87		82,754
5.85%, 11/05/27(a)		140		144,167
4.05%, 05/03/29(a)		86		83,413
4.05%, 12/03/42(a)		167		145,508
(1-day SOFR + 0.97%), 5.39%, 07/28/27(b)		25		25,085
(1-day SOFR + 1.00%), 4.99%, 05/01/26(b)		80		79,522
(1-day SOFR + 1.00%), 5.10%, 02/16/28(b)		60		59,907
(1-day SOFR + 1.33%), 6.34%, 10/30/26(b)		75		75,990
(1-day SOFR + 1.76%), 4.42%, 08/03/33(b)		100		95,297
(1-day SOFR + 1.84%), 5.04%, 05/01/34(b)		120		118,585
(1-day SOFR + 1.94%), 6.49%, 10/30/31(b)		75		80,364
(1-day SOFR + 2.26%), 4.99%, 05/26/33(b)		100		97,407
(1-day SOFR Index + 1.28%), 5.28%, 07/27/29(b)		100		100,622
Automatic Data Processing, Inc.(a)
1.70%, 05/15/28		100		89,505
1.25%, 09/01/30		341		278,608
Block Financial LLC, 2.50%, 07/15/28		89		79,060
Capital One Financial Corp.
4.25%, 04/30/25		341		336,289
4.20%, 10/29/25		61		59,623
3.75%, 07/28/26(a)		80		77,071
3.75%, 03/09/27(a)		87		83,501
3.65%, 05/11/27(a)		341		326,009
3.80%, 01/31/28(a)		171		162,611
(1-day SOFR + 0.86%), 1.88%, 11/02/27(b)		171		156,441
(1-day SOFR + 1.27%), 2.62%, 11/02/32(b)		87		70,369
(1-day SOFR + 1.34%), 2.36%, 07/29/32(b)		171		131,771
(1-day SOFR + 1.79%), 3.27%, 03/01/30(b)		118		106,301
(1-day SOFR + 1.91%), 5.70%, 02/01/30(a)(b)		30		30,256
(1-day SOFR + 2.06%), 4.93%, 05/10/28(b)		130		128,328
(1-day SOFR + 2.08%), 5.47%, 02/01/29(b)		100		99,674

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 15

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Consumer Finance (continued)
Capital One Financial Corp. (continued)
(1-day SOFR + 2.16%), 4.99%, 07/24/26(a)(b)	$	50	$	49,678
(1-day SOFR + 2.26%), 6.05%, 02/01/35(a)(b)		235		239,255
(1-day SOFR + 2.44%), 7.15%, 10/29/27(b)		50		52,036
(1-day SOFR + 2.60%), 5.25%, 07/26/30(b)		50		49,210
(1-day SOFR + 2.60%), 5.82%, 02/01/34(a)(b)		90		89,863
(1-day SOFR + 2.64%), 6.31%, 06/08/29(b)		40		41,122
(1-day SOFR + 2.86%), 6.38%, 06/08/34(a)(b)		330		342,710
Discover Financial Services
4.10%, 02/09/27(a)		100		96,476
6.70%, 11/29/32(a)		150		158,557
(1-day SOFR Index + 3.37%), 7.96%, 11/02/34(b)		75		84,953
Equifax, Inc.
5.10%, 12/15/27		70		69,937
5.10%, 06/01/28		40		40,069
2.35%, 09/15/31(a)		171		141,232
Ford Motor Credit Co. LLC
4.13%, 08/04/25		200		195,463
3.38%, 11/13/25		400		384,828
4.39%, 01/08/26		400		390,153
6.95%, 03/06/26		400		407,622
6.95%, 06/10/26		200		204,345
4.54%, 08/01/26		200		194,143
2.70%, 08/10/26(a)		200		186,427
4.95%, 05/28/27		200		195,142
4.13%, 08/17/27(a)		200		189,784
7.35%, 11/04/27		400		419,509
6.80%, 05/12/28		200		207,778
6.80%, 11/07/28		200		208,755
7.35%, 03/06/30(a)		200		213,231
4.00%, 11/13/30		200		178,570
7.12%, 11/07/33		200		215,182
6.13%, 03/08/34		200		201,105
Global Payments, Inc.
4.80%, 04/01/26(a)		87		86,096
2.15%, 01/15/27		86		79,360
3.20%, 08/15/29		87		78,164
5.30%, 08/15/29		35		34,833
2.90%, 05/15/30(a)		200		173,681
2.90%, 11/15/31		69		57,905
5.40%, 08/15/32(a)		200		198,351
4.15%, 08/15/49(a)		62		48,127
5.95%, 08/15/52(a)		25		24,940
Mastercard, Inc.
2.95%, 11/21/26(a)		200		190,952
3.30%, 03/26/27		82		78,908
4.88%, 03/09/28(a)		45		45,589
2.95%, 06/01/29		257		236,625
3.35%, 03/26/30		144		133,877
1.90%, 03/15/31(a)		90		75,165
4.85%, 03/09/33(a)		50		50,368
3.65%, 06/01/49		87		69,991
3.85%, 03/26/50(a)		181		149,769
2.95%, 03/15/51		96		67,015
Moody’s Corp.
3.25%, 01/15/28(a)		130		123,599
2.00%, 08/19/31		73		59,462
2.75%, 08/19/41(a)		63		44,775
3.25%, 05/20/50(a)		71		50,825
3.75%, 02/25/52		74		57,907

Security	Par (000)		Value
Consumer Finance (continued)
Moody’s Corp. (continued)
3.10%, 11/29/61(a)	$	81	$	52,724
PayPal Holdings, Inc.
1.65%, 06/01/25		78		74,840
2.65%, 10/01/26(a)		171		161,416
2.85%, 10/01/29		229		207,086
2.30%, 06/01/30(a)		81		69,865
4.40%, 06/01/32(a)		90		87,152
3.25%, 06/01/50(a)		102		72,259
5.05%, 06/01/52(a)		90		85,473
5.25%, 06/01/62		90		86,148
S&P Global, Inc.
2.45%, 03/01/27(a)		60		56,157
4.75%, 08/01/28(a)		171		170,730
2.70%, 03/01/29(a)		70		63,593
4.25%, 05/01/29(a)		171		166,586
2.50%, 12/01/29(a)		81		71,710
1.25%, 08/15/30		75		60,589
2.90%, 03/01/32(a)		95		82,790
3.25%, 12/01/49(a)		80		57,887
3.70%, 03/01/52(a)		76		60,161
2.30%, 08/15/60(a)		87		47,731
3.90%, 03/01/62		30		23,466
Synchrony Financial
4.88%, 06/13/25		235		231,503
4.50%, 07/23/25		67		65,653
3.95%, 12/01/27(a)		171		159,915
5.15%, 03/19/29		87		83,586
Visa, Inc.
3.15%, 12/14/25(a)		501		487,200
1.90%, 04/15/27(a)		341		315,338
2.75%, 09/15/27(a)		197		185,164
2.05%, 04/15/30		171		147,478
1.10%, 02/15/31(a)		240		191,519
4.15%, 12/14/35		87		82,532
2.70%, 04/15/40		171		128,144
4.30%, 12/14/45		269		242,601
3.65%, 09/15/47(a)		69		55,672
2.00%, 08/15/50(a)		189		111,367
Western Union Co.
1.35%, 03/15/26		155		143,237
6.20%, 11/17/36(a)		92		94,655
				17,358,616
Consumer Staples Distribution & Retail — 0.4%
Campbell Soup Co.
5.30%, 03/20/26		45		45,034
5.20%, 03/19/27		50		50,117
5.20%, 03/21/29		50		50,240
5.40%, 03/21/34		50		50,375
4.80%, 03/15/48(a)		130		115,510
Costco Wholesale Corp.(a)
3.00%, 05/18/27		257		245,859
1.60%, 04/20/30		257		216,364
1.75%, 04/20/32		87		70,481
Dollar General Corp.
4.63%, 11/01/27(a)		70		68,865
5.20%, 07/05/28		35		35,181
3.50%, 04/03/30(a)		100		91,432
5.00%, 11/01/32(a)		75		74,107
5.45%, 07/05/33(a)		40		40,125
4.13%, 04/03/50(a)		100		78,080

16  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Consumer Staples Distribution & Retail (continued)
Dollar Tree, Inc.(a)
4.20%, 05/15/28	$	171	$	165,266
2.65%, 12/01/31		87		72,667
3.38%, 12/01/51		71		47,443
General Mills, Inc.
4.70%, 01/30/27		50		49,571
3.20%, 02/10/27(a)		87		82,926
4.20%, 04/17/28(a)		171		166,774
5.50%, 10/17/28(a)		55		56,128
2.88%, 04/15/30		171		152,227
2.25%, 10/14/31(a)		121		100,046
4.95%, 03/29/33(a)		30		29,665
3.00%, 02/01/51(a)		180		118,135
Ingredion, Inc., 3.90%, 06/01/50(a)		87		64,555
Kellanova
3.25%, 04/01/26		65		62,688
4.30%, 05/15/28(a)		171		166,868
2.10%, 06/01/30(a)		141		119,802
5.25%, 03/01/33(a)		30		30,099
4.50%, 04/01/46(a)		62		53,097
Koninklijke Ahold Delhaize NV, 5.70%, 10/01/40(a)		73		72,939
Kraft Heinz Foods Co.
3.00%, 06/01/26(a)		206		197,178
3.88%, 05/15/27(a)		148		143,423
4.63%, 01/30/29		87		85,654
3.75%, 04/01/30		79		74,105
4.25%, 03/01/31		87		83,179
6.75%, 03/15/32(a)		70		77,571
5.00%, 07/15/35(a)		79		77,890
6.88%, 01/26/39(a)		87		98,257
6.50%, 02/09/40		79		85,930
5.00%, 06/04/42(a)		163		152,951
5.20%, 07/15/45		197		186,727
4.38%, 06/01/46		100		84,454
4.88%, 10/01/49(a)		163		147,502
5.50%, 06/01/50(a)		87		85,965
Kroger Co.
3.50%, 02/01/26(a)		87		84,486
2.65%, 10/15/26(a)		171		161,211
3.70%, 08/01/27		87		83,775
4.50%, 01/15/29(a)		171		168,701
1.70%, 01/15/31(a)		182		147,135
5.15%, 08/01/43(a)		66		61,923
3.88%, 10/15/46		87		67,282
4.65%, 01/15/48		87		76,579
5.40%, 01/15/49		87		85,789
3.95%, 01/15/50		75		59,759
McCormick & Co., Inc.(a)
0.90%, 02/15/26		67		61,903
1.85%, 02/15/31		71		57,444
4.95%, 04/15/33		100		98,895
Sysco Corp.
3.75%, 10/01/25		74		72,162
3.30%, 07/15/26(a)		110		105,636
3.25%, 07/15/27		171		161,575
5.75%, 01/17/29		50		51,447
5.95%, 04/01/30		171		178,297
2.45%, 12/14/31(a)		87		72,605
6.00%, 01/17/34(a)		50		53,200
4.85%, 10/01/45		53		48,406
4.50%, 04/01/46		87		76,067

Security	Par (000)		Value
Consumer Staples Distribution & Retail (continued)
Sysco Corp. (continued)
4.45%, 03/15/48(a)	$	87	$	73,988
6.60%, 04/01/50(a)		314		358,200
Target Corp.
2.25%, 04/15/25(a)		243		236,019
2.50%, 04/15/26(a)		87		83,453
1.95%, 01/15/27(a)		74		68,785
3.38%, 04/15/29(a)		171		161,341
2.35%, 02/15/30		169		148,623
2.65%, 09/15/30		199		175,955
4.50%, 09/15/32(a)		100		97,966
4.40%, 01/15/33(a)		150		146,075
7.00%, 01/15/38		174		206,469
3.90%, 11/15/47		87		70,901
4.80%, 01/15/53(a)		150		141,072
Walmart, Inc.
3.90%, 09/09/25		600		591,383
4.00%, 04/15/26(a)		30		29,609
1.05%, 09/17/26(a)		84		77,007
3.95%, 09/09/27(a)		100		98,251
3.90%, 04/15/28(a)		45		44,093
4.00%, 04/15/30(a)		160		156,143
1.80%, 09/22/31		166		137,821
4.15%, 09/09/32(a)		100		97,387
4.10%, 04/15/33(a)		80		77,072
6.50%, 08/15/37(a)		200		231,802
5.63%, 04/01/40(a)		341		366,638
4.05%, 06/29/48		82		71,246
2.65%, 09/22/51		150		99,132
4.50%, 09/09/52		400		370,779
4.50%, 04/15/53		80		73,952
Series M, 2.38%, 09/24/29(a)		33		29,725
				10,978,616
Containers & Packaging — 0.1%
Amcor Finance USA, Inc., 5.63%, 05/26/33(a)		40		41,076
Amcor Flexibles North America, Inc.
4.00%, 05/17/25		67		65,783
2.63%, 06/19/30		70		60,278
2.69%, 05/25/31		72		61,174
Avery Dennison Corp.(a)
2.25%, 02/15/32		87		71,072
5.75%, 03/15/33		90		93,674
Berry Global, Inc.(a)
1.57%, 01/15/26		171		159,849
1.65%, 01/15/27		87		78,979
5.65%, 01/15/34(d)		30		29,836
Packaging Corp. of America
3.00%, 12/15/29		70		63,071
5.70%, 12/01/33(a)		30		30,985
4.05%, 12/15/49(a)		112		89,334
3.05%, 10/01/51(a)		65		44,267
Sonoco Products Co.(a)
2.25%, 02/01/27		277		256,636
2.85%, 02/01/32		171		145,063
WestRock MWV LLC, 8.20%, 01/15/30(a)		74		84,510
WRKCo, Inc.
4.65%, 03/15/26(a)		200		197,497
3.38%, 09/15/27		87		82,513
4.00%, 03/15/28(a)		171		164,306
4.90%, 03/15/29(a)		171		169,750
				1,989,653

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 17

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Distributors — 0.0%
LKQ Corp., 5.75%, 06/15/28	$	100	$	101,768
Diversified Consumer Services — 0.1%
American University, Series 2019, 3.67%, 04/01/49(a)		60		48,665
Brown University, Series A, 2.92%, 09/01/50(a)		75		52,454
California Institute of Technology, 3.65%, 09/01/2119		171		118,698
Duke University
Series 2020, 2.68%, 10/01/44(a)		75		55,185
Series 2020, 2.83%, 10/01/55		88		59,415
Emory University, Series 2020, 2.97%, 09/01/50		62		43,454
George Washington University
4.87%, 09/15/45(a)		74		72,103
Series 2014, 4.30%, 09/15/44(a)		87		77,642
Series 2018, 4.13%, 09/15/48		58		50,175
Georgetown University
Series 20A, 2.94%, 04/01/50		77		53,942
Series A, 5.22%, 10/01/2118(a)		62		58,687
Series B, 4.32%, 04/01/49		40		35,335
Howard University, Series 22A, 5.21%, 10/01/52(a)		73		69,870
Leland Stanford Junior University(a)
3.65%, 05/01/48		130		107,717
2.41%, 06/01/50		75		48,179
Massachusetts Institute of Technology
3.96%, 07/01/38(a)		98		90,975
3.07%, 04/01/52(a)		27		19,812
5.60%, 07/01/2111(a)		87		94,954
4.68%, 07/01/2114(a)		75		68,373
Series F, 2.99%, 07/01/50		73		53,528
Series G, 2.29%, 07/01/51(a)		56		34,634
Northeastern University, Series 2020, 2.89%, 10/01/50(a)		51		35,776
Northwestern University
Series 2017, 3.66%, 12/01/57		58		46,143
Series 2020, 2.64%, 12/01/50(a)		85		57,425
President and Fellows of Harvard College(a)
3.15%, 07/15/46		62		47,194
2.52%, 10/15/50		71		46,777
3.30%, 07/15/56		121		89,977
Thomas Jefferson University, 3.85%, 11/01/57		72		54,121
Trustees of Boston College, 3.13%, 07/01/52(a)		87		62,773
Trustees of Boston University, Series CC, 4.06%, 10/01/48(a)		35		30,168
Trustees of Princeton University(a)
5.70%, 03/01/39		87		95,582
Series 2020, 2.52%, 07/01/50		74		49,489
Trustees of the University of Pennsylvania 3.61%, 02/15/2119(a)		57		40,710
Series 2020, 2.40%, 10/01/50		52		31,428
University of Chicago, Series C, 2.55%, 04/01/50(a)		73		49,920
University of Miami, Series 2022, 4.06%, 04/01/52		67		56,451
University of Notre Dame du Lac, Series 2017, 3.39%, 02/15/48(a)		82		64,251
University of Southern California
2.81%, 10/01/50(a)		71		49,237
4.98%, 10/01/53(a)		75		75,517
Series 21A, 2.95%, 10/01/51		87		61,509
Series A, 3.23%, 10/01/2120(a)		69		43,110
Washington University
4.35%, 04/15/2122		83		69,440
Series 2022, 3.52%, 04/15/54(a)		75		58,333
William Marsh Rice University, 3.77%, 05/15/55(a)		85		70,147

Security	Par (000)		Value
Diversified Consumer Services (continued)
Yale University(a)
Series 2020, 1.48%, 04/15/30	$	54	$	44,922
Series 2020, 2.40%, 04/15/50		62		40,008
				2,684,205
Diversified REITs — 0.5%
American Homes 4 Rent LP
4.90%, 02/15/29(a)		171		167,720
2.38%, 07/15/31		35		28,428
5.50%, 02/01/34(a)		50		49,850
3.38%, 07/15/51		25		16,645
American Tower Corp.
4.40%, 02/15/26		30		29,476
1.60%, 04/15/26		89		82,649
1.45%, 09/15/26(a)		64		58,331
3.38%, 10/15/26(a)		87		83,097
2.75%, 01/15/27(a)		76		71,170
3.65%, 03/15/27(a)		69		66,140
5.50%, 03/15/28		70		70,586
5.25%, 07/15/28(a)		40		40,003
5.80%, 11/15/28(a)		85		87,026
5.20%, 02/15/29(a)		25		24,988
3.95%, 03/15/29		87		82,191
3.80%, 08/15/29(a)		87		81,194
2.90%, 01/15/30		93		81,769
2.10%, 06/15/30		141		117,130
2.70%, 04/15/31		104		88,042
2.30%, 09/15/31(a)		124		101,206
4.05%, 03/15/32		79		72,298
5.65%, 03/15/33(a)		70		71,095
5.55%, 07/15/33(a)		40		40,310
5.90%, 11/15/33(a)		100		103,549
5.45%, 02/15/34		25		25,041
3.70%, 10/15/49(a)		75		55,739
3.10%, 06/15/50(a)		82		54,369
2.95%, 01/15/51(a)		200		128,963
Boston Properties LP
3.65%, 02/01/26		67		64,557
6.75%, 12/01/27		100		103,793
4.50%, 12/01/28		171		162,709
3.40%, 06/21/29		100		89,744
2.90%, 03/15/30		83		71,091
3.25%, 01/30/31		171		146,275
2.55%, 04/01/32(a)		130		102,837
6.50%, 01/15/34(a)		75		77,798
Brixmor Operating Partnership LP
4.13%, 06/15/26		87		84,697
4.13%, 05/15/29		214		201,698
5.50%, 02/15/34		25		24,687
Broadstone Net Lease LLC, 2.60%, 09/15/31(a)		100		79,016
Crown Castle, Inc.
3.70%, 06/15/26		71		68,567
1.05%, 07/15/26		341		309,959
4.00%, 03/01/27		171		165,284
2.90%, 03/15/27		70		65,473
5.00%, 01/11/28		65		64,316
3.80%, 02/15/28(a)		341		322,830
4.80%, 09/01/28		50		49,024
5.60%, 06/01/29(a)		75		76,006
2.25%, 01/15/31		171		140,691
5.10%, 05/01/33		55		53,646
5.80%, 03/01/34(a)		65		66,492
2.90%, 04/01/41(a)		141		99,701

18  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Diversified REITs (continued)
Crown Castle, Inc. (continued)
4.00%, 11/15/49(a)	$	102	$	79,141
4.15%, 07/01/50		150		119,855
Digital Realty Trust LP(a)
3.70%, 08/15/27		171		163,298
5.55%, 01/15/28		285		287,043
3.60%, 07/01/29		130		119,783
EPR Properties
4.50%, 04/01/25		70		68,947
4.75%, 12/15/26		75		72,587
4.50%, 06/01/27		75		71,352
4.95%, 04/15/28		75		71,370
3.75%, 08/15/29		75		66,234
Equinix, Inc.
1.25%, 07/15/25(a)		82		77,564
1.00%, 09/15/25(a)		171		159,918
1.45%, 05/15/26		70		64,387
2.90%, 11/18/26		71		66,602
1.55%, 03/15/28		144		124,901
2.00%, 05/15/28		67		58,854
3.20%, 11/18/29		81		72,514
2.15%, 07/15/30		87		72,100
2.50%, 05/15/31		152		126,791
3.00%, 07/15/50		71		46,455
3.40%, 02/15/52(a)		140		97,948
Essex Portfolio LP
4.00%, 03/01/29(a)		71		67,715
3.00%, 01/15/30(a)		70		62,077
1.65%, 01/15/31(a)		90		71,030
2.55%, 06/15/31(a)		60		49,829
5.50%, 04/01/34		25		25,028
2.65%, 09/01/50(a)		71		41,712
Extra Space Storage LP
4.00%, 06/15/29		21		19,804
2.20%, 10/15/30(a)		69		57,167
5.90%, 01/15/31		30		31,038
2.55%, 06/01/31		87		72,224
2.40%, 10/15/31		75		61,704
2.35%, 03/15/32(a)		70		56,008
5.40%, 02/01/34(a)		50		49,780
GLP Capital LP/GLP Financing II, Inc.
5.25%, 06/01/25		71		70,543
5.30%, 01/15/29(a)		171		168,142
4.00%, 01/15/30(a)		169		154,290
3.25%, 01/15/32(a)		63		53,035
Kimco Realty OP LLC
2.80%, 10/01/26(a)		587		553,716
3.80%, 04/01/27		300		287,954
2.25%, 12/01/31(a)		87		70,151
4.60%, 02/01/33		25		23,666
6.40%, 03/01/34		25		26,763
4.45%, 09/01/47(a)		62		50,457
3.70%, 10/01/49(a)		87		63,343
Mid-America Apartments LP
1.10%, 09/15/26(a)		67		60,778
3.60%, 06/01/27(a)		87		83,568
3.95%, 03/15/29		87		83,659
1.70%, 02/15/31		69		55,555
5.00%, 03/15/34		25		24,611
2.88%, 09/15/51(a)		66		42,251
Prologis LP
3.25%, 06/30/26		87		83,700

Security	Par (000)		Value
Diversified REITs (continued)
Prologis LP (continued)
2.13%, 04/15/27	$	30	$	27,625
4.88%, 06/15/28(a)		45		45,048
2.88%, 11/15/29(a)		93		83,998
2.25%, 04/15/30(a)		213		184,612
1.75%, 07/01/30(a)		82		68,114
1.25%, 10/15/30(a)		65		52,119
1.75%, 02/01/31(a)		64		52,433
4.63%, 01/15/33(a)		135		131,122
4.75%, 06/15/33(a)		40		39,196
5.13%, 01/15/34(a)		50		50,217
5.00%, 03/15/34		50		49,704
3.00%, 04/15/50(a)		95		65,272
5.25%, 06/15/53		140		137,816
5.25%, 03/15/54		50		49,104
Rayonier LP, 2.75%, 05/17/31		124		102,363
Rexford Industrial Realty LP
5.00%, 06/15/28(a)		30		29,775
2.13%, 12/01/30		71		58,032
2.15%, 09/01/31(a)		79		63,262
Safehold GL Holdings LLC
2.80%, 06/15/31(a)		60		49,474
6.10%, 04/01/34		25		24,839
Sun Communities Operating LP
2.30%, 11/01/28		79		68,994
5.50%, 01/15/29(a)		25		24,935
2.70%, 07/15/31(a)		128		105,408
4.20%, 04/15/32		69		61,882
5.70%, 01/15/33		20		19,835
Ventas Realty LP
4.13%, 01/15/26(a)		214		209,001
3.25%, 10/15/26		87		82,337
4.00%, 03/01/28		257		244,901
3.00%, 01/15/30		50		44,066
2.50%, 09/01/31		121		99,393
5.70%, 09/30/43		100		95,557
VICI Properties LP
4.38%, 05/15/25		71		69,788
4.75%, 02/15/28		117		114,098
4.95%, 02/15/30(a)		105		101,541
5.13%, 05/15/32(a)		118		112,867
5.63%, 05/15/52(a)		161		149,204
6.13%, 04/01/54		100		98,633
Weyerhaeuser Co.
4.75%, 05/15/26(a)		60		59,442
4.00%, 11/15/29		171		161,325
7.38%, 03/15/32		80		90,886
3.38%, 03/09/33		90		78,592
4.00%, 03/09/52		55		43,710
WP Carey, Inc.(a)
3.85%, 07/15/29		82		76,542
2.45%, 02/01/32		118		94,924
				13,050,824
Diversified Telecommunication Services — 0.6%
AT&T, Inc.
3.88%, 01/15/26		200		195,431
4.25%, 03/01/27		500		490,890
2.30%, 06/01/27		450		414,793
1.65%, 02/01/28(a)		300		265,678
4.30%, 02/15/30		300		288,321
2.75%, 06/01/31		341		293,724
2.25%, 02/01/32		400		325,088

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 19

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Diversified Telecommunication Services (continued)
AT&T, Inc. (continued)
2.55%, 12/01/33	$	200	$	160,195
5.40%, 02/15/34(a)		125		126,640
4.50%, 05/15/35(a)		655		611,797
4.90%, 08/15/37		375		355,819
4.85%, 03/01/39		300		279,916
5.35%, 09/01/40		200		195,757
3.50%, 06/01/41		250		195,149
4.65%, 06/01/44		125		110,081
4.75%, 05/15/46		500		447,774
4.50%, 03/09/48(a)		500		425,281
3.65%, 06/01/51(a)		200		146,827
3.50%, 09/15/53(a)		511		360,522
3.55%, 09/15/55		974		681,046
3.80%, 12/01/57		778		563,289
3.65%, 09/15/59		520		362,030
3.85%, 06/01/60		200		144,645
Bell Telephone Co. of Canada or Bell Canada
5.10%, 05/11/33(a)		60		59,532
4.46%, 04/01/48		100		86,109
4.30%, 07/29/49(a)		67		56,117
3.65%, 08/15/52		67		49,945
Series US-5, 2.15%, 02/15/32(a)		87		70,253
Series US-6, 3.20%, 02/15/52(a)		86		58,621
British Telecommunications PLC, 9.63%, 12/15/30		300		367,989
Deutsche Telekom International Finance BV,
8.75%, 06/15/30		300		354,634
Sprint Capital Corp.
6.88%, 11/15/28(a)		200		213,127
8.75%, 03/15/32		300		363,766
Telefonica Emisiones SA
7.05%, 06/20/36(a)		185		207,114
4.67%, 03/06/38(a)		150		136,371
5.21%, 03/08/47		283		260,403
4.90%, 03/06/48		160		140,688
Telefonica Europe BV, 8.25%, 09/15/30		75		85,709
TELUS Corp.(a)
3.40%, 05/13/32		90		78,894
4.60%, 11/16/48		70		60,777
4.30%, 06/15/49		87		71,481
Verizon Communications, Inc.
0.85%, 11/20/25		249		232,072
1.45%, 03/20/26(a)		122		113,754
2.63%, 08/15/26		155		146,864
4.13%, 03/16/27		350		342,570
3.00%, 03/22/27(a)		200		189,532
2.10%, 03/22/28(a)		140		126,037
4.33%, 09/21/28(a)		369		360,788
3.88%, 02/08/29(a)		341		326,462
4.02%, 12/03/29(a)		350		333,941
3.15%, 03/22/30(a)		171		154,606
1.68%, 10/30/30		341		277,821
1.75%, 01/20/31		1,000		811,728
2.55%, 03/21/31(a)		377		322,079
2.36%, 03/15/32(a)		695		571,148
5.05%, 05/09/33(a)		55		54,979
4.50%, 08/10/33(a)		300		286,894
4.40%, 11/01/34(a)		257		242,269
4.81%, 03/15/39(a)		104		98,197
2.65%, 11/20/40		287		202,232
3.40%, 03/22/41(a)		429		335,307
2.85%, 09/03/41		112		80,627

Security	Par (000)		Value
Diversified Telecommunication Services (continued)
Verizon Communications, Inc. (continued)
4.75%, 11/01/41(a)	$	511	$	484,080
3.85%, 11/01/42		87		71,542
4.86%, 08/21/46(a)		341		320,199
4.00%, 03/22/50(a)		171		138,229
2.88%, 11/20/50(a)		427		278,901
3.55%, 03/22/51(a)		336		249,433
3.88%, 03/01/52(a)		118		92,752
5.50%, 02/23/54(a)		30		30,324
2.99%, 10/30/56		211		134,968
3.00%, 11/20/60(a)		275		171,486
3.70%, 03/22/61(a)		403		294,666
				18,038,710
Electric Utilities — 2.1%
AEP Texas, Inc.
3.95%, 06/01/28		87		83,011
4.70%, 05/15/32		70		66,809
5.25%, 05/15/52		70		65,711
Series H, 3.45%, 01/15/50		100		70,190
AEP Transmission Co. LLC
3.10%, 12/01/26(a)		87		82,756
3.80%, 06/15/49(a)		171		133,047
3.15%, 09/15/49		71		48,805
5.40%, 03/15/53		40		39,817
Series M, 3.65%, 04/01/50		87		65,988
Series N, 2.75%, 08/15/51(a)		71		44,651
Series O, 4.50%, 06/15/52		50		43,669
AES Corp.
1.38%, 01/15/26		171		158,354
5.45%, 06/01/28		60		59,883
2.45%, 01/15/31(a)		87		71,180
Alabama Power Co.
3.75%, 09/01/27		100		96,285
3.94%, 09/01/32(a)		100		92,724
5.85%, 11/15/33		25		26,324
6.13%, 05/15/38(a)		171		182,214
3.75%, 03/01/45		87		68,925
4.30%, 01/02/46(a)		87		74,614
3.45%, 10/01/49(a)		65		48,046
3.13%, 07/15/51(a)		104		71,799
Series 20-A, 1.45%, 09/15/30		51		41,247
Ameren Corp.
5.70%, 12/01/26(a)		50		50,665
1.95%, 03/15/27(a)		133		122,375
5.00%, 01/15/29		50		49,726
3.50%, 01/15/31(a)		171		154,486
Ameren Illinois Co.
3.85%, 09/01/32		90		82,430
4.15%, 03/15/46(a)		87		73,170
3.25%, 03/15/50(a)		53		37,679
5.90%, 12/01/52(a)		50		53,545
American Electric Power Co., Inc.
5.75%, 11/01/27(a)		100		102,298
5.20%, 01/15/29		75		75,176
2.30%, 03/01/30		75		63,808
5.95%, 11/01/32		100		103,946
5.63%, 03/01/33(a)		32		32,488
Series J, 4.30%, 12/01/28(a)		87		84,131
Series N, 1.00%, 11/01/25		87		81,122
Appalachian Power Co.
5.65%, 04/01/34		50		50,462
4.40%, 05/15/44		87		71,700

20  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Electric Utilities (continued)
Appalachian Power Co. (continued)
Series BB, 4.50%, 08/01/32	$	100	$	93,789
Series Z, 3.70%, 05/01/50		70		49,762
Arizona Public Service Co.
3.15%, 05/15/25		87		84,722
2.60%, 08/15/29(a)		87		77,159
6.35%, 12/15/32(a)		100		106,723
5.55%, 08/01/33		50		50,563
5.05%, 09/01/41(a)		87		80,666
4.50%, 04/01/42(a)		71		61,043
4.20%, 08/15/48		87		69,192
3.50%, 12/01/49(a)		64		45,087
Avista Corp., 4.35%, 06/01/48		104		85,867
Baltimore Gas and Electric Co.
2.40%, 08/15/26(a)		171		161,415
2.25%, 06/15/31		81		68,191
6.35%, 10/01/36		87		94,248
3.50%, 08/15/46		121		90,352
3.20%, 09/15/49		80		55,155
2.90%, 06/15/50(a)		79		51,822
4.55%, 06/01/52(a)		30		26,184
5.40%, 06/01/53(a)		235		233,724
Berkshire Hathaway Energy Co.
4.05%, 04/15/25(a)		341		336,652
3.25%, 04/15/28		87		82,078
3.70%, 07/15/30		87		81,439
1.65%, 05/15/31(a)		146		116,896
6.13%, 04/01/36(a)		337		358,253
5.95%, 05/15/37		171		178,152
5.15%, 11/15/43		87		84,906
4.50%, 02/01/45		71		63,641
3.80%, 07/15/48		87		66,470
4.45%, 01/15/49		87		73,400
4.25%, 10/15/50		71		57,660
2.85%, 05/15/51(a)		71		45,717
4.60%, 05/01/53		71		61,451
Black Hills Corp.
3.95%, 01/15/26(a)		70		68,200
5.95%, 03/15/28(a)		100		103,231
3.05%, 10/15/29(a)		73		65,440
2.50%, 06/15/30(a)		55		46,032
4.35%, 05/01/33		71		64,877
CenterPoint Energy Houston Electric LLC
5.20%, 10/01/28(a)		50		50,850
4.95%, 04/01/33		100		99,322
5.15%, 03/01/34(a)		40		40,290
3.55%, 08/01/42		74		58,412
3.95%, 03/01/48(a)		87		71,223
5.30%, 04/01/53		30		29,940
Sereis AJ, 4.85%, 10/01/52		50		46,520
Series AF, 3.35%, 04/01/51		87		63,073
Series AG, 3.00%, 03/01/32(a)		70		60,915
Series AH, 3.60%, 03/01/52		50		37,980
Series AI, 4.45%, 10/01/32		40		38,375
CenterPoint Energy, Inc.
1.45%, 06/01/26(a)		84		77,575
5.25%, 08/10/26(a)		25		25,043
2.65%, 06/01/31		140		118,578
Cleco Corporate Holdings LLC, 3.74%, 05/01/26		87		83,623
CMS Energy Corp.
3.45%, 08/15/27(a)		171		162,396

Security	Par (000)		Value
Electric Utilities (continued)
CMS Energy Corp. (continued)
(5-year CMT + 2.90%), 3.75%, 12/01/50(b)	$	100	$	81,923
Commonwealth Edison Co.
2.55%, 06/15/26		87		82,679
4.90%, 02/01/33(a)		30		29,739
5.90%, 03/15/36(a)		50		53,180
6.45%, 01/15/38		100		109,980
3.70%, 03/01/45(a)		87		68,610
3.65%, 06/15/46		130		100,066
3.00%, 03/01/50		87		58,163
5.30%, 02/01/53(a)		40		39,373
Series 127, 3.20%, 11/15/49(a)		105		73,346
Series 130, 3.13%, 03/15/51(a)		71		48,276
Series 131, 2.75%, 09/01/51		87		53,900
Series 133, 3.85%, 03/15/52		141		109,557
Connecticut Light and Power Co.
4.65%, 01/01/29(a)		25		24,713
4.90%, 07/01/33(a)		25		24,644
4.30%, 04/15/44		100		86,137
5.25%, 01/15/53(a)		100		99,281
Series A, 3.20%, 03/15/27		87		83,003
Series A, 2.05%, 07/01/31(a)		140		114,516
Consolidated Edison Co. of New York, Inc.
3.80%, 05/15/28(a)		87		83,967
2.40%, 06/15/31(a)		171		145,500
5.20%, 03/01/33(a)		50		50,858
5.50%, 03/15/34(a)		50		51,651
3.95%, 03/01/43		53		43,930
4.45%, 03/15/44		87		76,520
4.50%, 12/01/45		87		76,315
3.85%, 06/15/46(a)		171		136,293
3.20%, 12/01/51		60		41,272
6.15%, 11/15/52(a)		50		55,138
5.90%, 11/15/53(a)		50		53,363
4.63%, 12/01/54		100		87,425
3.70%, 11/15/59(a)		70		51,437
3.60%, 06/15/61(a)		130		94,738
Series 07-A, 6.30%, 08/15/37(a)		200		216,053
Series 12-A, 4.20%, 03/15/42		71		60,393
Series 20A, 3.35%, 04/01/30(a)		257		236,724
Series 20B, 3.95%, 04/01/50(a)		171		138,836
Series C, 4.30%, 12/01/56		87		71,524
Series C, 4.00%, 11/15/57(a)		130		102,844
Series D, 4.00%, 12/01/28(a)		87		84,678
Series E, 4.65%, 12/01/48		87		77,314
Constellation Energy Generation LLC
3.25%, 06/01/25		500		488,608
5.60%, 03/01/28		50		50,931
5.80%, 03/01/33		50		51,538
6.13%, 01/15/34(a)		25		26,397
6.25%, 10/01/39(a)		123		129,497
5.75%, 10/01/41(a)		87		86,599
6.50%, 10/01/53		100		109,994
5.75%, 03/15/54		50		50,084
Consumers Energy Co.
4.65%, 03/01/28(a)		200		198,778
4.90%, 02/15/29(a)		100		100,320
4.63%, 05/15/33(a)		100		97,338
4.35%, 04/15/49		171		149,342
3.10%, 08/15/50(a)		75		52,859
2.65%, 08/15/52(a)		38		24,015

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 21

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Electric Utilities (continued)
Consumers Energy Co. (continued)
4.20%, 09/01/52	$	25	$	21,071
2.50%, 05/01/60(a)		181		104,342
Dominion Energy South Carolina, Inc.
5.45%, 02/01/41		171		170,098
6.25%, 10/15/53		50		55,971
Series A, 2.30%, 12/01/31(a)		70		57,962
Dominion Energy, Inc.
3.90%, 10/01/25		341		333,487
5.38%, 11/15/32(a)		50		50,284
7.00%, 06/15/38		87		96,031
Series A, 1.45%, 04/15/26		70		64,834
Series A, 4.35%, 08/15/32(a)		50		47,142
Series B, 4.85%, 08/15/52(a)		50		44,701
Series C, 3.38%, 04/01/30(a)		257		233,560
Series C, 2.25%, 08/15/31		82		67,101
Series C, 3.30%, 04/15/41		75		56,210
Series C, 4.90%, 08/01/41		50		45,539
DTE Electric Co.
5.20%, 04/01/33(a)		40		40,534
5.20%, 03/01/34		50		50,229
3.70%, 03/15/45(a)		51		40,648
3.70%, 06/01/46		87		67,811
3.75%, 08/15/47(a)		70		54,745
5.40%, 04/01/53(a)		40		40,335
Series A, 1.90%, 04/01/28		87		78,007
Series A, 3.00%, 03/01/32(a)		61		53,055
Series A, 4.00%, 04/01/43		53		44,346
Series A, 4.05%, 05/15/48		87		71,345
Series B, 3.25%, 04/01/51		71		49,690
Series B, 3.65%, 03/01/52(a)		63		47,684
DTE Energy Co.
4.88%, 06/01/28		200		197,739
5.10%, 03/01/29(a)		75		74,698
Series C, 3.40%, 06/15/29(a)		120		110,035
Series F, 1.05%, 06/01/25		154		146,222
Duke Energy Carolinas LLC
2.45%, 08/15/29		87		76,958
2.45%, 02/01/30		71		62,408
2.55%, 04/15/31(a)		75		64,754
2.85%, 03/15/32(a)		97		83,196
4.95%, 01/15/33(a)		160		159,118
4.85%, 01/15/34		25		24,576
6.10%, 06/01/37		87		91,385
6.05%, 04/15/38		74		78,507
5.30%, 02/15/40		87		85,974
4.25%, 12/15/41		171		147,228
4.00%, 09/30/42		87		72,398
3.70%, 12/01/47		87		65,971
3.95%, 03/15/48		71		56,603
3.45%, 04/15/51		75		54,331
3.55%, 03/15/52		78		56,789
5.35%, 01/15/53(a)		150		147,878
5.40%, 01/15/54		92		91,557
Series A, 6.00%, 12/01/28(a)		87		91,603
Duke Energy Corp.
0.90%, 09/15/25		243		228,019
5.00%, 12/08/25(a)		65		64,798
2.65%, 09/01/26		87		82,149
4.85%, 01/05/27(a)		25		24,897
3.15%, 08/15/27(a)		87		81,873
5.00%, 12/08/27		170		169,787
4.30%, 03/15/28		90		87,927

Security	Par (000)		Value
Electric Utilities (continued)
Duke Energy Corp. (continued)
4.85%, 01/05/29(a)	$	25	$	24,764
2.45%, 06/01/30		89		76,649
4.50%, 08/15/32(a)		100		94,796
5.75%, 09/15/33(a)		75		77,044
3.30%, 06/15/41		121		90,124
4.80%, 12/15/45		87		77,248
3.75%, 09/01/46		100		75,501
3.95%, 08/15/47		87		67,252
4.20%, 06/15/49		87		69,365
3.50%, 06/15/51		100		70,204
5.00%, 08/15/52		100		90,517
6.10%, 09/15/53(a)		75		79,259
(5-year CMT + 2.32%), 3.25%, 01/15/82(b)		109		96,861
Duke Energy Florida LLC
2.50%, 12/01/29(a)		59		52,307
1.75%, 06/15/30		82		68,118
2.40%, 12/15/31(a)		141		118,270
5.88%, 11/15/33(a)		35		36,981
6.35%, 09/15/37		200		216,054
6.40%, 06/15/38		200		218,664
3.40%, 10/01/46(a)		87		63,751
3.00%, 12/15/51		65		42,649
5.95%, 11/15/52		100		106,209
6.20%, 11/15/53		50		55,124
Duke Energy Indiana LLC
5.25%, 03/01/34(a)		25		25,200
3.75%, 05/15/46		87		68,249
5.40%, 04/01/53(a)		50		49,069
Series WWW, 4.90%, 07/15/43(a)		87		81,140
Duke Energy Ohio, Inc.
5.25%, 04/01/33(a)		35		35,384
3.70%, 06/15/46		87		66,997
5.55%, 03/15/54		25		24,935
Duke Energy Progress LLC
3.70%, 09/01/28		65		62,187
3.45%, 03/15/29		87		81,848
2.00%, 08/15/31(a)		74		60,379
3.40%, 04/01/32		67		59,864
5.25%, 03/15/33(a)		30		30,332
5.10%, 03/15/34		25		24,986
4.10%, 05/15/42		53		44,751
4.10%, 03/15/43		87		72,454
4.38%, 03/30/44		74		63,493
4.15%, 12/01/44		87		72,157
4.20%, 08/15/45		87		72,461
3.70%, 10/15/46		87		66,820
2.50%, 08/15/50(a)		87		52,295
2.90%, 08/15/51(a)		74		47,936
4.00%, 04/01/52		55		43,641
5.35%, 03/15/53		50		48,773
Edison International
4.70%, 08/15/25(a)		340		335,824
4.13%, 03/15/28(a)		171		164,066
5.25%, 11/15/28		25		24,912
6.95%, 11/15/29		45		48,210
El Paso Electric Co., 6.00%, 05/15/35		87		87,280
Emera U.S. Finance LP
3.55%, 06/15/26		185		177,586
2.64%, 06/15/31(a)		155		126,456
4.75%, 06/15/46		62		50,945
Entergy Arkansas LLC
3.50%, 04/01/26		65		63,124

22  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Electric Utilities (continued)
Entergy Arkansas LLC (continued)
5.15%, 01/15/33	$	50	$	50,132
5.30%, 09/15/33(a)		50		50,454
2.65%, 06/15/51(a)		75		45,629
3.35%, 06/15/52		87		60,401
Entergy Corp.
0.90%, 09/15/25		116		108,732
2.95%, 09/01/26(a)		171		162,436
1.90%, 06/15/28		71		62,655
2.80%, 06/15/30		79		69,032
2.40%, 06/15/31(a)		104		86,229
3.75%, 06/15/50		71		52,034
Entergy Louisiana LLC
1.60%, 12/15/30		82		65,377
4.00%, 03/15/33		87		79,946
5.35%, 03/15/34		225		225,841
4.20%, 09/01/48		87		70,756
4.20%, 04/01/50		171		140,774
4.75%, 09/15/52		50		44,551
5.70%, 03/15/54		125		127,131
Entergy Mississippi LLC
2.85%, 06/01/28		87		79,956
5.00%, 09/01/33		20		19,646
3.85%, 06/01/49		87		67,409
Entergy Texas, Inc.
5.00%, 09/15/52(a)		50		45,670
5.80%, 09/01/53		25		25,809
Evergy Kansas Central, Inc.
2.55%, 07/01/26		62		58,755
5.90%, 11/15/33		25		26,225
4.25%, 12/01/45(a)		171		142,592
3.25%, 09/01/49		87		59,995
3.45%, 04/15/50		87		61,910
5.70%, 03/15/53(a)		20		20,212
Evergy Metro, Inc.
3.65%, 08/15/25		53		51,770
4.95%, 04/15/33(a)		30		29,488
Evergy, Inc., 2.90%, 09/15/29		87		77,709
Eversource Energy
4.75%, 05/15/26		30		29,689
5.00%, 01/01/27		25		24,930
2.90%, 03/01/27		67		62,988
5.45%, 03/01/28(a)		95		96,173
5.95%, 02/01/29		75		77,389
2.55%, 03/15/31(a)		87		72,704
3.38%, 03/01/32(a)		67		58,297
5.13%, 05/15/33		40		39,194
5.50%, 01/01/34(a)		75		75,008
3.45%, 01/15/50(a)		71		49,631
Series M, 3.30%, 01/15/28		257		240,198
Series Q, 0.80%, 08/15/25(a)		140		131,074
Series R, 1.65%, 08/15/30(a)		140		112,553
Series U, 1.40%, 08/15/26		87		79,269
Exelon Corp.
3.95%, 06/15/25		130		127,655
3.40%, 04/15/26		130		125,671
5.15%, 03/15/28		35		35,086
4.05%, 04/15/30(a)		171		161,267
3.35%, 03/15/32		200		176,870
5.30%, 03/15/33(a)		70		70,217
5.45%, 03/15/34		35		35,235
5.10%, 06/15/45		87		80,606
4.70%, 04/15/50		87		76,196

Security	Par (000)		Value
Electric Utilities (continued)
Exelon Corp. (continued)
5.60%, 03/15/53	$	100	$	99,814
Series WI, 2.75%, 03/15/27(a)		53		49,616
Series WI, 4.10%, 03/15/52		86		68,413
Florida Power & Light Co.
2.85%, 04/01/25(a)		63		61,516
3.13%, 12/01/25		87		84,477
4.45%, 05/15/26(a)		25		24,759
5.05%, 04/01/28		40		40,437
4.40%, 05/15/28(a)		35		34,622
4.63%, 05/15/30(a)		35		34,751
2.45%, 02/03/32(a)		150		126,254
5.10%, 04/01/33(a)		70		70,469
4.80%, 05/15/33(a)		25		24,622
5.95%, 02/01/38(a)		50		53,829
5.69%, 03/01/40(a)		87		91,412
5.25%, 02/01/41(a)		87		86,922
4.13%, 02/01/42		87		75,309
4.05%, 10/01/44(a)		130		111,133
3.70%, 12/01/47		71		55,959
3.95%, 03/01/48(a)		87		71,316
4.13%, 06/01/48		87		73,588
3.99%, 03/01/49(a)		87		71,567
2.88%, 12/04/51(a)		200		131,444
5.30%, 04/01/53(a)		50		50,097
Fortis, Inc./Canada, 3.06%, 10/04/26		171		161,911
Georgia Power Co.
4.65%, 05/16/28(a)		100		99,001
4.70%, 05/15/32(a)		90		87,929
4.95%, 05/17/33(a)		100		98,597
5.25%, 03/15/34(a)		250		252,524
4.30%, 03/15/42(a)		121		105,414
5.13%, 05/15/52(a)		90		87,054
Series A, 3.25%, 03/15/51		100		70,183
Series B, 2.65%, 09/15/29		171		152,409
Series B, 3.70%, 01/30/50(a)		171		131,065
Idaho Power Co.
5.50%, 03/15/53		20		19,839
5.80%, 04/01/54(a)		25		25,605
Indiana Michigan Power Co.
6.05%, 03/15/37(a)		62		64,946
4.25%, 08/15/48(a)		87		71,073
5.63%, 04/01/53		35		35,357
Series K, 4.55%, 03/15/46		54		45,953
Series L, 3.75%, 07/01/47		171		128,844
Interstate Power and Light Co.
4.10%, 09/26/28(a)		75		71,997
5.70%, 10/15/33		25		25,611
3.70%, 09/15/46(a)		87		65,597
3.50%, 09/30/49(a)		78		56,291
IPALCO Enterprises, Inc., 4.25%, 05/01/30		171		159,101
ITC Holdings Corp., 3.25%, 06/30/26(a)		171		163,706
Kentucky Utilities Co.
5.45%, 04/15/33(a)		20		20,427
4.38%, 10/01/45		171		147,012
3.30%, 06/01/50		75		52,553
Louisville Gas and Electric Co., 5.45%, 04/15/33(a)		200		203,963
MidAmerican Energy Co.
3.65%, 04/15/29		87		82,745
5.35%, 01/15/34(a)		25		25,727
4.80%, 09/15/43		87		81,817
3.65%, 08/01/48		87		66,664
4.25%, 07/15/49		107		91,043

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 23

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Electric Utilities (continued)
MidAmerican Energy Co. (continued)
3.15%, 04/15/50(a)	$	87	$	60,641
2.70%, 08/01/52		75		46,697
5.85%, 09/15/54(a)		100		106,697
Mississippi Power Co.(a)
Series 12-A, 4.25%, 03/15/42		87		74,058
Series B, 3.10%, 07/30/51		87		57,613
National Grid PLC
5.60%, 06/12/28(a)		100		101,865
5.42%, 01/11/34		50		49,648
National Rural Utilities Cooperative Finance Corp.
3.45%, 06/15/25(a)		70		68,510
5.60%, 11/13/26		25		25,329
4.80%, 02/05/27(a)		50		50,035
3.40%, 02/07/28(a)		341		323,431
4.80%, 03/15/28(a)		125		124,855
5.05%, 09/15/28(a)		50		50,276
4.85%, 02/07/29(a)		50		49,957
2.40%, 03/15/30(a)		144		124,739
5.00%, 02/07/31(a)		25		24,822
2.75%, 04/15/32(a)		87		73,824
4.02%, 11/01/32(a)		107		98,702
4.15%, 12/15/32(a)		30		27,845
5.80%, 01/15/33		50		52,022
4.30%, 03/15/49		87		74,163
Nevada Power Co.
6.00%, 03/15/54(a)		50		52,761
Series DD, 2.40%, 05/01/30		71		61,176
Series EE, 3.13%, 08/01/50(a)		71		47,450
Series GG, 5.90%, 05/01/53(a)		50		52,086
NextEra Energy Capital Holdings, Inc.
4.45%, 06/20/25		200		197,565
4.95%, 01/29/26(a)		100		99,519
1.88%, 01/15/27(a)		154		141,016
3.55%, 05/01/27		171		163,124
4.63%, 07/15/27(a)		200		197,211
4.90%, 02/28/28(a)		150		149,529
1.90%, 06/15/28		119		105,400
4.90%, 03/15/29		100		99,581
2.75%, 11/01/29		86		76,799
5.00%, 02/28/30(a)		150		150,515
2.25%, 06/01/30		300		255,441
2.44%, 01/15/32		86		71,072
5.00%, 07/15/32(a)		135		134,234
5.05%, 02/28/33		150		148,613
5.25%, 03/15/34		100		99,779
3.00%, 01/15/52(a)		96		62,017
5.25%, 02/28/53		150		142,846
5.55%, 03/15/54		150		149,001
Northern States Power Co.
2.25%, 04/01/31		55		46,167
3.40%, 08/15/42		70		53,814
4.00%, 08/15/45(a)		85		69,015
2.90%, 03/01/50(a)		79		52,589
3.20%, 04/01/52		80		55,184
4.50%, 06/01/52		69		60,604
5.10%, 05/15/53		40		38,536
5.40%, 03/15/54		45		45,316
NSTAR Electric Co., 4.55%, 06/01/52		79		69,060
Oglethorpe Power Corp.
4.50%, 04/01/47(a)		61		50,746
5.05%, 10/01/48		41		36,875
3.75%, 08/01/50		87		62,856

Security	Par (000)		Value
Electric Utilities (continued)
Oglethorpe Power Corp. (continued)
5.25%, 09/01/50	$	60	$	55,892
6.20%, 12/01/53(d)		50		52,551
Ohio Power Co.
4.15%, 04/01/48(a)		71		57,269
Series Q, 1.63%, 01/15/31		76		60,626
Series R, 2.90%, 10/01/51		76		48,796
Oklahoma Gas and Electric Co.
3.25%, 04/01/30(a)		171		155,310
5.40%, 01/15/33		100		102,005
Oncor Electric Delivery Co. LLC
0.55%, 10/01/25		100		93,629
3.70%, 11/15/28		62		58,752
2.75%, 05/15/30(a)		171		151,785
4.55%, 09/15/32		75		72,453
5.65%, 11/15/33(a)		55		57,213
5.25%, 09/30/40(a)		87		86,148
5.30%, 06/01/42(a)		75		74,807
3.75%, 04/01/45		87		69,315
3.80%, 06/01/49		171		135,024
3.10%, 09/15/49		86		59,661
2.70%, 11/15/51(a)		74		46,484
4.60%, 06/01/52(a)		200		175,935
4.95%, 09/15/52(a)		50		47,008
Pacific Gas and Electric Co.
4.95%, 06/08/25		100		99,172
3.15%, 01/01/26		341		327,827
2.95%, 03/01/26(a)		100		95,471
5.45%, 06/15/27		100		100,287
2.10%, 08/01/27(a)		102		91,838
3.30%, 12/01/27(a)		345		320,586
3.00%, 06/15/28		109		99,561
3.75%, 07/01/28(a)		171		160,043
6.10%, 01/15/29		30		30,914
4.20%, 03/01/29(a)		130		123,370
5.55%, 05/15/29(a)		75		75,655
4.55%, 07/01/30(a)		341		324,128
2.50%, 02/01/31(a)		257		213,716
4.40%, 03/01/32		137		126,209
5.90%, 06/15/32		100		101,708
6.15%, 01/15/33		115		118,535
6.40%, 06/15/33		40		42,118
6.95%, 03/15/34(a)		90		98,529
5.80%, 05/15/34		75		75,694
4.50%, 07/01/40(a)		141		120,399
3.30%, 08/01/40(a)		154		112,748
4.20%, 06/01/41		78		62,789
4.75%, 02/15/44(a)		87		73,395
4.30%, 03/15/45		74		58,473
3.95%, 12/01/47		150		112,211
4.95%, 07/01/50(a)		304		261,498
3.50%, 08/01/50		155		105,905
5.25%, 03/01/52		200		178,466
6.75%, 01/15/53(a)		135		147,051
6.70%, 04/01/53		135		146,116
PacifiCorp
5.10%, 02/15/29		50		50,359
5.30%, 02/15/31(a)		50		50,143
5.45%, 02/15/34(a)		50		50,161
PacifiCorp
3.50%, 06/15/29(a)		300		279,411
5.25%, 06/15/35(a)		87		85,392
6.35%, 07/15/38(a)		257		272,679

24  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Electric Utilities (continued)
PacifiCorp. (continued)
6.00%, 01/15/39	$	250	$	259,513
4.10%, 02/01/42		87		69,659
4.15%, 02/15/50		87		68,402
2.90%, 06/15/52		74		45,358
5.35%, 12/01/53		100		93,030
5.50%, 05/15/54(a)		80		76,967
5.80%, 01/15/55(a)		100		98,587
PECO Energy Co.
4.90%, 06/15/33		54		54,013
3.00%, 09/15/49(a)		69		47,143
3.05%, 03/15/51		63		42,924
2.85%, 09/15/51(a)		82		52,936
4.60%, 05/15/52		100		90,083
4.38%, 08/15/52(a)		50		43,408
Potomac Electric Power Co.
5.20%, 03/15/34		25		25,255
6.50%, 11/15/37(a)		100		111,424
4.15%, 03/15/43		87		74,315
5.50%, 03/15/54(a)		25		25,365
PPL Electric Utilities Corp.
5.00%, 05/15/33(a)		100		99,714
4.85%, 02/15/34(a)		25		24,584
4.75%, 07/15/43		87		81,021
3.00%, 10/01/49(a)		60		41,573
5.25%, 05/15/53		100		98,854
Progress Energy, Inc., 7.75%, 03/01/31(a)		50		56,576
Public Service Co. of Colorado
3.70%, 06/15/28		171		163,523
3.60%, 09/15/42		87		66,792
4.30%, 03/15/44		75		62,598
3.80%, 06/15/47(a)		171		131,157
5.25%, 04/01/53		200		189,884
Series 35, 1.90%, 01/15/31(a)		140		114,724
Series 38, 4.10%, 06/01/32		80		74,508
Public Service Co. of New Hampshire
5.35%, 10/01/33(c)		50		50,988
5.15%, 01/15/53		45		44,005
Public Service Co. of Oklahoma
5.25%, 01/15/33(a)		100		99,323
Series J, 2.20%, 08/15/31(a)		87		71,103
Series K, 3.15%, 08/15/51		70		46,867
Public Service Electric and Gas Co.
3.20%, 05/15/29		87		80,779
2.45%, 01/15/30		71		62,095
1.90%, 08/15/31		141		114,838
4.90%, 12/15/32(a)		100		99,545
4.65%, 03/15/33(a)		35		34,114
5.20%, 03/01/34		50		50,587
3.95%, 05/01/42		50		42,215
3.65%, 09/01/42		50		40,350
3.80%, 03/01/46		214		171,573
3.85%, 05/01/49		87		70,429
3.15%, 01/01/50		71		50,567
3.00%, 03/01/51		71		48,561
5.45%, 08/01/53		100		102,719
5.45%, 03/01/54		50		51,557
Public Service Enterprise Group, Inc.
0.80%, 08/15/25(a)		341		320,442
5.88%, 10/15/28(a)		50		51,482
5.20%, 04/01/29		50		50,038
6.13%, 10/15/33(a)		50		52,486
5.45%, 04/01/34		50		50,092

Security	Par (000)		Value
Electric Utilities (continued)
Puget Energy, Inc.
3.65%, 05/15/25	$	87	$	84,953
2.38%, 06/15/28(a)		71		63,323
4.10%, 06/15/30(a)		87		79,407
4.22%, 03/15/32		61		55,318
Puget Sound Energy, Inc.
5.80%, 03/15/40(a)		87		88,526
4.22%, 06/15/48(a)		87		71,382
5.45%, 06/01/53		100		99,359
San Diego Gas & Electric Co.
4.95%, 08/15/28(a)		100		100,375
4.15%, 05/15/48		171		142,906
5.35%, 04/01/53(a)		95		93,568
5.55%, 04/15/54(a)		150		152,156
Series VVV, 1.70%, 10/01/30(a)		87		71,512
Series WWW, 2.95%, 08/15/51(a)		100		67,336
Sempra
3.30%, 04/01/25		60		58,701
5.40%, 08/01/26		50		50,145
3.40%, 02/01/28(a)		341		322,197
3.70%, 04/01/29		86		80,402
5.50%, 08/01/33(a)		50		50,134
3.80%, 02/01/38		171		142,163
4.00%, 02/01/48(a)		171		133,378
(5-year CMT + 2.87%), 4.13%, 04/01/52(b)		87		80,261
Sierra Pacific Power Co.
2.60%, 05/01/26(a)		214		203,334
5.90%, 03/15/54(d)		75		77,606
Southern California Edison Co.
5.35%, 03/01/26(a)		50		50,079
4.90%, 06/01/26		30		29,848
4.88%, 02/01/27(a)		50		49,848
5.85%, 11/01/27(a)		50		51,329
5.30%, 03/01/28		200		202,226
5.15%, 06/01/29		50		50,205
2.25%, 06/01/30(a)		171		145,308
5.95%, 11/01/32		40		41,946
6.00%, 01/15/34(a)		257		271,685
5.20%, 06/01/34		50		49,499
5.50%, 03/15/40(a)		50		49,749
4.50%, 09/01/40		171		151,904
4.65%, 10/01/43		62		54,864
4.00%, 04/01/47		171		135,342
3.65%, 02/01/50(a)		71		52,584
3.45%, 02/01/52(a)		70		49,453
5.88%, 12/01/53(a)		40		41,224
5.75%, 04/15/54(a)		50		50,714
Series 08-A, 5.95%, 02/01/38		87		89,807
Series B, 4.88%, 03/01/49		87		77,734
Series C, 4.20%, 06/01/25(a)		59		58,194
Series C, 3.60%, 02/01/45		87		65,133
Series C, 4.13%, 03/01/48		100		80,720
Series D, 4.70%, 06/01/27(a)		65		64,286
Series E, 3.70%, 08/01/25		341		333,522
Series E, 5.45%, 06/01/52		100		97,767
Series G, 2.50%, 06/01/31(a)		166		140,090
Series H, 3.65%, 06/01/51		76		56,103
Southern Co.
5.15%, 10/06/25(a)		100		99,831
3.25%, 07/01/26(a)		387		371,914
4.85%, 06/15/28		60		59,683
5.50%, 03/15/29		75		76,426
5.20%, 06/15/33		60		59,953

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 25

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Electric Utilities (continued)
Southern Co. (continued)
5.70%, 03/15/34	$	75	$	77,351
4.40%, 07/01/46(a)		130		111,965
Series B, (5-year CMT + 3.73%), 4.00%, 01/15/51(b)		171		164,393
Southern Power Co.
5.25%, 07/15/43		87		81,944
Series F, 4.95%, 12/15/46(a)		171		151,751
Southwestern Electric Power Co.
5.30%, 04/01/33(a)		25		24,698
3.25%, 11/01/51(a)		71		47,133
Series L, 3.85%, 02/01/48		100		73,539
Series M, 4.10%, 09/15/28(a)		171		163,965
Southwestern Public Service Co.
3.70%, 08/15/47		87		62,486
3.75%, 06/15/49(a)		71		52,340
Series 8, 3.15%, 05/01/50		71		46,584
Tampa Electric Co.(a)
4.90%, 03/01/29		35		35,028
4.10%, 06/15/42		87		72,755
4.30%, 06/15/48		71		59,353
4.45%, 06/15/49		64		54,812
3.63%, 06/15/50		80		59,063
5.00%, 07/15/52		35		32,272
Toledo Edison Co., 6.15%, 05/15/37(a)		74		78,326
Tucson Electric Power Co.(a)
3.25%, 05/15/32		87		75,839
4.85%, 12/01/48		87		77,538
5.50%, 04/15/53		100		98,863
Union Electric Co.
2.95%, 06/15/27(a)		171		160,998
2.15%, 03/15/32(a)		171		138,699
5.20%, 04/01/34(c)		50		50,082
4.00%, 04/01/48		171		137,095
3.25%, 10/01/49(a)		87		60,882
5.45%, 03/15/53(a)		100		99,031
5.25%, 01/15/54		50		48,049
Virginia Electric and Power Co.
2.30%, 11/15/31(a)		87		72,304
2.40%, 03/30/32(a)		70		58,039
5.00%, 04/01/33(a)		45		44,393
5.30%, 08/15/33(a)		50		50,185
5.00%, 01/15/34		25		24,547
8.88%, 11/15/38(a)		200		267,786
4.00%, 01/15/43		87		72,076
4.45%, 02/15/44		112		97,772
4.60%, 12/01/48		81		71,011
3.30%, 12/01/49(a)		71		50,187
2.95%, 11/15/51		87		56,304
5.45%, 04/01/53		100		98,943
5.70%, 08/15/53(a)		50		51,421
5.35%, 01/15/54		25		24,505
Series A, 3.15%, 01/15/26		97		93,670
Series A, 3.50%, 03/15/27		130		124,886
Series A, 3.80%, 04/01/28		87		83,520
Series A, 2.88%, 07/15/29		60		54,440
Series A, 6.00%, 05/15/37		87		91,270
Series B, 3.75%, 05/15/27(a)		78		75,244
Series B, 6.00%, 01/15/36		171		180,614
Series B, 3.80%, 09/15/47(a)		87		67,291
Series C, 4.00%, 11/15/46		75		60,350
Series C, 4.63%, 05/15/52		61		53,198

Security	Par (000)		Value
Electric Utilities (continued)
Virginia Electric and Power Co. (continued)
Series D, 4.65%, 08/15/43(a)	$	87	$	78,184
WEC Energy Group, Inc.
4.75%, 01/09/26(a)		120		118,892
5.60%, 09/12/26(a)		25		25,289
5.15%, 10/01/27		100		100,175
4.75%, 01/15/28(a)		100		99,293
Wisconsin Electric Power Co.(a)
1.70%, 06/15/28		86		76,162
4.75%, 09/30/32		80		78,784
Wisconsin Power and Light Co.
3.00%, 07/01/29(a)		171		156,917
1.95%, 09/16/31		66		53,176
3.95%, 09/01/32(a)		100		92,750
Wisconsin Public Service Corp.
5.35%, 11/10/25(a)		150		150,501
3.30%, 09/01/49(a)		109		77,097
2.85%, 12/01/51		82		52,397
Xcel Energy, Inc.
3.30%, 06/01/25(a)		74		72,021
3.35%, 12/01/26(a)		87		82,604
1.75%, 03/15/27		87		78,329
4.00%, 06/15/28		171		162,986
2.60%, 12/01/29		70		60,975
2.35%, 11/15/31		71		57,168
4.60%, 06/01/32		83		78,050
5.45%, 08/15/33		100		99,391
5.50%, 03/15/34		75		74,579
3.50%, 12/01/49		70		48,513
				58,322,260
Electrical Equipment — 0.0%
Eaton Corp.(a)
3.10%, 09/15/27		118		111,877
4.15%, 03/15/33		100		94,859
4.15%, 11/02/42		87		76,298
4.70%, 08/23/52		60		56,024
Emerson Electric Co.
2.00%, 12/21/28(a)		87		77,255
2.20%, 12/21/31(a)		75		62,740
2.75%, 10/15/50		171		110,621
2.80%, 12/21/51(a)		58		37,983
Regal Rexnord Corp.(d)
6.05%, 04/15/28		20		20,275
6.30%, 02/15/30		200		204,742
6.40%, 04/15/33(a)		100		103,713
				956,387
Electronic Equipment, Instruments & Components — 0.2%
Allegion U.S. Holding Co., Inc., 5.41%, 07/01/32(a)		40		40,087
Amphenol Corp.
2.80%, 02/15/30(a)		171		153,009
2.20%, 09/15/31		82		67,867
Arrow Electronics, Inc.
4.00%, 04/01/25		87		85,529
2.95%, 02/15/32(a)		71		59,595
Avnet, Inc.
6.25%, 03/15/28		40		40,974
3.00%, 05/15/31		87		72,044
5.50%, 06/01/32(a)		70		67,711
CDW LLC/CDW Finance Corp.
2.67%, 12/01/26		140		130,001
4.25%, 04/01/28(a)		71		67,958

26  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Electronic Equipment, Instruments & Components (continued)
CDW LLC/CDW Finance Corp. (continued)
3.25%, 02/15/29(a)	$	79	$	71,527
3.57%, 12/01/31(a)		140		123,079
Corning, Inc.
4.75%, 03/15/42		50		45,048
5.35%, 11/15/48(a)		50		48,438
3.90%, 11/15/49(a)		87		68,458
4.38%, 11/15/57(a)		130		107,648
5.85%, 11/15/68		100		99,427
5.45%, 11/15/79(a)		87		82,380
Flex Ltd.
6.00%, 01/15/28		200		203,437
4.88%, 06/15/29(a)		87		85,287
Fortive Corp., 3.15%, 06/15/26		87		83,218
Honeywell International, Inc.
1.35%, 06/01/25		233		223,286
1.10%, 03/01/27(a)		171		154,509
4.95%, 02/15/28(a)		100		101,132
4.25%, 01/15/29		40		39,338
2.70%, 08/15/29(a)		257		233,041
4.88%, 09/01/29		75		75,498
1.95%, 06/01/30(a)		171		145,675
1.75%, 09/01/31		171		138,787
4.95%, 09/01/31		75		75,543
5.00%, 02/15/33		100		101,125
4.50%, 01/15/34		140		136,115
5.00%, 03/01/35(a)		75		75,282
3.81%, 11/21/47(a)		87		70,424
2.80%, 06/01/50(a)		76		52,678
5.25%, 03/01/54		175		176,578
5.35%, 03/01/64		75		75,990
Jabil, Inc.
1.70%, 04/15/26		146		135,523
4.25%, 05/15/27		80		77,529
3.00%, 01/15/31		200		171,217
Keysight Technologies, Inc., 3.00%, 10/30/29		140		124,721
TD SYNNEX Corp.(a)
1.75%, 08/09/26		171		156,323
2.65%, 08/09/31		87		70,105
Teledyne Technologies, Inc., 2.75%, 04/01/31(a)		171		146,479
Trimble, Inc., 6.10%, 03/15/33(a)		100		104,469
Tyco Electronics Group SA(a)
4.50%, 02/13/26		50		49,449
2.50%, 02/04/32		60		51,078
Vontier Corp., 1.80%, 04/01/26		104		96,514
				4,861,130
Energy Equipment & Services — 0.1%
Baker Hughes Holdings LLC, 5.13%, 09/15/40		74		72,920
Baker Hughes Holdings LLC/Baker Hughes Co.- Obligor, Inc.
2.06%, 12/15/26		119		109,977
3.34%, 12/15/27		79		74,726
3.14%, 11/07/29		82		75,306
4.08%, 12/15/47		257		212,144
Halliburton Co.
3.80%, 11/15/25		165		161,280
4.85%, 11/15/35(a)		171		166,308
7.45%, 09/15/39		200		241,754
4.50%, 11/15/41		50		44,554
4.75%, 08/01/43		214		196,538

Security	Par (000)		Value
Energy Equipment & Services (continued)
Halliburton Co. (continued)
5.00%, 11/15/45(a)	$	200	$	187,771
NOV, Inc.(a)
3.60%, 12/01/29		171		157,250
3.95%, 12/01/42		53		40,418
Schlumberger Investment SA
4.50%, 05/15/28		40		39,803
4.85%, 05/15/33(a)		40		40,031
				1,820,780
Environmental, Maintenance & Security Service — 0.1%
Nature Conservancy, Series A, 3.96%, 03/01/52(a)		75		63,435
Republic Services, Inc.
2.90%, 07/01/26		85		81,440
3.95%, 05/15/28		300		290,096
4.88%, 04/01/29(a)		50		50,078
1.45%, 02/15/31(a)		153		121,823
1.75%, 02/15/32(a)		171		135,269
2.38%, 03/15/33(a)		257		207,938
5.00%, 12/15/33(a)		40		39,727
Waste Connections, Inc.
2.60%, 02/01/30(a)		150		132,493
2.20%, 01/15/32		171		140,032
3.20%, 06/01/32(a)		73		64,355
4.20%, 01/15/33(a)		100		93,992
5.00%, 03/01/34(a)		50		49,518
Waste Management, Inc.
0.75%, 11/15/25(a)		171		159,588
3.15%, 11/15/27(a)		171		162,086
4.88%, 02/15/29(a)		75		75,702
2.00%, 06/01/29(a)		86		75,449
4.63%, 02/15/30		100		99,526
1.50%, 03/15/31(a)		171		137,579
4.63%, 02/15/33(a)		100		97,887
4.88%, 02/15/34(a)		75		74,487
2.95%, 06/01/41		100		74,772
4.15%, 07/15/49		87		74,536
				2,501,808
Financial Services — 0.3%
AerCap Ireland Capital DAC/AerCap Global Aviation Trust
6.50%, 07/15/25(a)		345		348,326
1.75%, 01/30/26		345		322,130
2.45%, 10/29/26		500		464,366
3.65%, 07/21/27		345		326,274
5.75%, 06/06/28(a)		150		152,002
3.00%, 10/29/28		427		386,358
3.30%, 01/30/32		400		343,063
3.40%, 10/29/33(a)		195		164,260
3.85%, 10/29/41(a)		150		118,808
Air Lease Corp.
3.38%, 07/01/25(a)		171		166,641
2.88%, 01/15/26(a)		171		163,520
1.88%, 08/15/26(a)		55		50,708
3.63%, 12/01/27(a)		70		66,033
5.30%, 02/01/28(a)		200		200,108
2.10%, 09/01/28(a)		87		76,139
5.10%, 03/01/29		50		49,668
3.25%, 10/01/29(a)		87		78,682
3.00%, 02/01/30		71		62,759

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 27

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Financial Services (continued)
Air Lease Corp. (continued)
2.88%, 01/15/32	$	200	$	168,410
Aircastle Ltd., 4.25%, 06/15/26(a)		87		84,503
Andrew W Mellon Foundation, Series 2020, 0.95%, 08/01/27(a)		83		73,633
Apollo Global Management, Inc., 6.38%, 11/15/33		25		26,892
Cboe Global Markets, Inc., 3.00%, 03/16/32(a)		121		105,589
CME Group, Inc.
2.65%, 03/15/32		69		59,573
5.30%, 09/15/43(a)		171		174,525
4.15%, 06/15/48(a)		70		61,191
Corp. Andina de Fomento, 5.00%, 01/24/29		300		299,157
GE Capital International Funding Co. Unlimited Co., 4.42%, 11/15/35		300		281,878
Hercules Capital, Inc., 3.38%, 01/20/27(a)		70		64,284
Intercontinental Exchange, Inc.
3.65%, 05/23/25		82		80,457
3.75%, 12/01/25(a)		192		187,420
3.10%, 09/15/27(a)		100		94,067
4.00%, 09/15/27		150		145,333
3.75%, 09/21/28(a)		200		191,548
2.10%, 06/15/30(a)		133		112,582
1.85%, 09/15/32		158		123,204
4.60%, 03/15/33(a)		137		132,558
2.65%, 09/15/40(a)		171		123,019
4.25%, 09/21/48(a)		87		74,165
3.00%, 06/15/50(a)		76		50,972
4.95%, 06/15/52		114		108,088
3.00%, 09/15/60		145		91,135
5.20%, 06/15/62		130		127,258
ORIX Corp.
5.00%, 09/13/27		100		99,959
2.25%, 03/09/31(a)		87		73,520
4.00%, 04/13/32		67		62,552
5.20%, 09/13/32(a)		100		102,093
Radian Group, Inc.
4.88%, 03/15/27(a)		50		48,810
6.20%, 05/15/29		50		50,742
Voya Financial, Inc.
3.65%, 06/15/26		62		59,711
5.70%, 07/15/43		87		85,184
				7,163,857
Food Products — 0.2%
Archer-Daniels-Midland Co.
2.50%, 08/11/26(a)		300		283,584
2.90%, 03/01/32(a)		67		57,709
4.50%, 08/15/33		100		96,769
4.54%, 03/26/42(a)		37		33,497
4.02%, 04/16/43		66		54,428
3.75%, 09/15/47		171		132,293
Bunge Ltd. Finance Corp.
3.75%, 09/25/27		171		164,108
2.75%, 05/14/31		121		104,204
Conagra Brands, Inc.
4.60%, 11/01/25		171		168,822
5.30%, 10/01/26		50		50,080
1.38%, 11/01/27		77		67,375
5.30%, 11/01/38(a)		171		162,828
5.40%, 11/01/48(a)		87		81,671
Flowers Foods, Inc., 2.40%, 03/15/31(a)		60		50,280
Hershey Co.
2.45%, 11/15/29		87		77,768

Security	Par (000)		Value
Food Products (continued)
Hershey Co. (continued)
3.13%, 11/15/49(a)	$	87	$	63,132
Hormel Foods Corp.
4.80%, 03/30/27		45		44,954
1.70%, 06/03/28(a)		223		197,608
3.05%, 06/03/51(a)		87		59,419
J M Smucker Co.
5.90%, 11/15/28(a)		75		77,769
6.20%, 11/15/33		75		80,001
4.25%, 03/15/35		87		79,480
6.50%, 11/15/43(a)		40		43,398
4.38%, 03/15/45(a)		87		74,687
3.55%, 03/15/50(a)		70		49,550
6.50%, 11/15/53(a)		125		138,811
JBS USA LUX SA/JBS USA Food Co./JBS Luxembourg SARL(a)(d)
6.75%, 03/15/34		50		52,536
7.25%, 11/15/53		50		53,739
JBS USA LUX SA/JBS USA Food Co./JBS USA Finance, Inc.
5.13%, 02/01/28		100		98,476
5.50%, 01/15/30(a)		500		492,758
3.00%, 05/15/32		250		203,890
5.75%, 04/01/33		200		197,034
4.38%, 02/02/52		100		72,620
6.50%, 12/01/52		250		247,025
Mondelez International, Inc.
1.50%, 05/04/25		62		59,446
2.63%, 03/17/27(a)		341		319,348
4.75%, 02/20/29(a)		50		49,648
2.75%, 04/13/30(a)		160		142,312
1.50%, 02/04/31		100		79,841
1.88%, 10/15/32(a)		87		69,216
2.63%, 09/04/50(a)		70		44,054
Pilgrim’s Pride Corp.
4.25%, 04/15/31(a)		100		90,144
3.50%, 03/01/32		150		127,128
6.25%, 07/01/33(a)		125		127,736
Tyson Foods, Inc.
3.55%, 06/02/27(a)		171		163,089
5.40%, 03/15/29		50		50,447
5.70%, 03/15/34		50		50,659
4.88%, 08/15/34(a)		70		67,191
5.15%, 08/15/44(a)		87		79,694
4.55%, 06/02/47		87		71,914
5.10%, 09/28/48		150		135,099
				5,639,269
Gas Utilities — 0.1%
Atmos Energy Corp.
2.63%, 09/15/29(a)		74		66,205
1.50%, 01/15/31		171		137,236
5.90%, 11/15/33		50		53,040
4.15%, 01/15/43		74		64,837
4.30%, 10/01/48(a)		87		75,735
4.13%, 03/15/49		107		89,165
3.38%, 09/15/49		110		80,061
5.75%, 10/15/52		50		52,976
CenterPoint Energy Resources Corp.
5.25%, 03/01/28(a)		140		141,415
1.75%, 10/01/30(a)		91		74,730
4.40%, 07/01/32		100		95,132
5.40%, 03/01/33(a)		100		101,615

28  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Gas Utilities (continued)
CenterPoint Energy Resources Corp. (continued)
5.85%, 01/15/41(a)	$	87	$	90,626
National Fuel Gas Co.
5.50%, 10/01/26		20		20,004
2.95%, 03/01/31(a)		87		73,159
NiSource, Inc.
0.95%, 08/15/25		149		140,217
3.49%, 05/15/27		171		163,105
1.70%, 02/15/31		79		63,099
5.35%, 04/01/34		50		49,729
5.95%, 06/15/41(a)		56		57,708
5.25%, 02/15/43		75		70,906
4.80%, 02/15/44		87		77,825
5.65%, 02/01/45		87		86,189
4.38%, 05/15/47(a)		87		72,894
3.95%, 03/30/48(a)		87		68,085
5.00%, 06/15/52(a)		50		46,220
ONE Gas, Inc., 4.66%, 02/01/44(a)		87		78,983
Piedmont Natural Gas Co., Inc.
2.50%, 03/15/31		87		73,374
5.40%, 06/15/33		40		40,337
3.35%, 06/01/50		71		47,962
5.05%, 05/15/52		100		91,255
Southern California Gas Co.
2.95%, 04/15/27		110		103,780
5.20%, 06/01/33(a)		40		40,041
6.35%, 11/15/52(a)		20		22,009
5.75%, 06/01/53		40		40,667
5.60%, 04/01/54		25		25,016
Series TT, 2.60%, 06/15/26(a)		214		202,898
Series UU, 4.13%, 06/01/48		87		70,844
Series VV, 4.30%, 01/15/49(a)		200		165,402
Series XX, 2.55%, 02/01/30(a)		171		149,903
Southern Co. Gas Capital Corp.
5.75%, 09/15/33(a)		50		51,758
3.95%, 10/01/46		130		100,807
4.40%, 05/30/47		100		83,154
Series 20-A, 1.75%, 01/15/31(a)		87		70,800
Southwest Gas Corp.
5.80%, 12/01/27(a)		100		102,337
2.20%, 06/15/30(a)		171		144,050
4.05%, 03/15/32		75		68,687
Washington Gas Light Co., 3.65%, 09/15/49(a)		87		64,643
				3,950,620
Ground Transportation — 0.4%
BNSF Funding Trust I, (3-mo. LIBOR US + 2.35%),
6.61%, 12/15/55(b)		250		247,988
Burlington Northern Santa Fe LLC
3.65%, 09/01/25(a)		130		127,294
7.00%, 12/15/25(a)		87		89,719
3.25%, 06/15/27		300		286,496
5.40%, 06/01/41(a)		50		50,885
4.40%, 03/15/42		53		47,743
4.38%, 09/01/42(a)		87		77,872
4.45%, 03/15/43		70		62,968
5.15%, 09/01/43		87		85,693
4.90%, 04/01/44		87		82,684
4.55%, 09/01/44		87		79,000
4.15%, 04/01/45		87		74,254
4.70%, 09/01/45		87		80,489
3.90%, 08/01/46(a)		141		115,472

Security	Par (000)		Value
Ground Transportation (continued)
Burlington Northern Santa Fe LLC (continued)
4.13%, 06/15/47(a)	$	87	$	73,567
4.05%, 06/15/48		60		49,978
4.15%, 12/15/48		87		73,933
3.05%, 02/15/51		71		48,735
3.30%, 09/15/51(a)		171		122,946
4.45%, 01/15/53(a)		200		177,257
5.20%, 04/15/54(a)		120		118,947
Canadian National Railway Co.
2.75%, 03/01/26(a)		97		93,199
3.85%, 08/05/32(a)		100		92,918
3.20%, 08/02/46(a)		140		104,806
3.65%, 02/03/48(a)		57		45,966
2.45%, 05/01/50(a)		81		50,740
4.40%, 08/05/52		80		71,443
Canadian Pacific Railway Co.
1.75%, 12/02/26(a)		72		66,133
2.88%, 11/15/29		63		56,480
7.13%, 10/15/31(a)		87		97,672
2.45%, 12/02/31(a)		119		106,789
4.80%, 09/15/35		87		84,208
3.00%, 12/02/41(a)		73		62,303
4.80%, 08/01/45		191		177,668
4.70%, 05/01/48		87		77,634
3.50%, 05/01/50		87		65,151
3.10%, 12/02/51(a)		103		71,075
4.20%, 11/15/69(a)		78		61,628
6.13%, 09/15/2115		87		91,765
CSX Corp.
3.35%, 11/01/25		87		84,587
3.25%, 06/01/27(a)		341		324,697
3.80%, 03/01/28		227		219,583
2.40%, 02/15/30(a)		87		76,062
4.10%, 11/15/32		50		47,102
5.20%, 11/15/33(a)		100		101,679
6.22%, 04/30/40(a)		100		109,104
4.75%, 05/30/42(a)		189		175,965
4.30%, 03/01/48		130		112,309
3.35%, 09/15/49		75		53,980
3.80%, 04/15/50		96		74,967
3.95%, 05/01/50(a)		79		63,489
2.50%, 05/15/51(a)		75		45,939
4.50%, 11/15/52(a)		50		44,214
4.50%, 08/01/54(a)		87		76,359
4.65%, 03/01/68		137		119,030
JB Hunt Transport Services, Inc., 3.88%, 03/01/26(a)		171		167,154
Norfolk Southern Corp.
3.15%, 06/01/27(a)		153		144,666
2.55%, 11/01/29		58		51,225
5.05%, 08/01/30(a)		175		175,523
3.00%, 03/15/32(a)		81		70,347
4.45%, 03/01/33(a)		150		143,900
5.55%, 03/15/34(a)		50		52,019
3.95%, 10/01/42		74		61,115
4.45%, 06/15/45		87		75,852
3.94%, 11/01/47(a)		80		63,747
4.15%, 02/28/48		87		72,183
3.40%, 11/01/49		59		43,248
3.05%, 05/15/50		105		71,016
2.90%, 08/25/51		74		48,156
3.70%, 03/15/53(a)		58		43,575

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 29

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Ground Transportation (continued)
Norfolk Southern Corp. (continued)
4.55%, 06/01/53(a)	$	40	$	34,912
5.35%, 08/01/54(a)		140		138,982
3.16%, 05/15/55		171		113,394
5.95%, 03/15/64		75		80,098
4.10%, 05/15/2121(a)		50		36,463
Ryder System, Inc.
1.75%, 09/01/26		86		79,251
2.85%, 03/01/27		57		53,431
5.30%, 03/15/27(a)		40		40,278
4.30%, 06/15/27(a)		60		58,454
5.65%, 03/01/28(a)		50		50,957
5.25%, 06/01/28		40		40,183
6.30%, 12/01/28(a)		50		52,333
5.38%, 03/15/29(a)		50		50,415
6.60%, 12/01/33		45		48,809
Union Pacific Corp.
3.25%, 08/15/25		87		84,845
4.75%, 02/21/26(a)		200		199,711
2.75%, 03/01/26(a)		171		164,160
2.15%, 02/05/27		57		53,000
3.95%, 09/10/28(a)		171		166,694
3.70%, 03/01/29(a)		171		163,582
2.38%, 05/20/31		221		188,730
2.80%, 02/14/32(a)		64		55,550
4.50%, 01/20/33(a)		100		97,419
3.38%, 02/01/35		87		75,163
3.60%, 09/15/37		214		184,780
3.20%, 05/20/41		75		58,440
3.38%, 02/14/42(a)		82		65,063
4.05%, 11/15/45		87		71,597
4.05%, 03/01/46		74		61,521
4.50%, 09/10/48		87		77,077
3.25%, 02/05/50		189		137,748
3.80%, 10/01/51		87		69,424
2.95%, 03/10/52(a)		59		39,672
3.50%, 02/14/53		89		66,761
4.95%, 05/15/53		200		193,359
3.95%, 08/15/59		135		104,687
3.84%, 03/20/60		249		191,183
3.55%, 05/20/61		100		71,769
3.80%, 04/06/71		141		104,714
3.85%, 02/14/72(a)		69		51,445
				10,340,344
Health Care Equipment & Supplies — 0.3%
Abbott Laboratories
3.88%, 09/15/25		45		44,364
3.75%, 11/30/26(a)		243		237,472
1.15%, 01/30/28(a)		92		81,293
1.40%, 06/30/30(a)		79		65,839
4.75%, 11/30/36(a)		384		380,848
5.30%, 05/27/40		87		89,828
4.75%, 04/15/43		87		83,752
4.90%, 11/30/46(a)		250		244,039
Agilent Technologies, Inc.(a)
2.75%, 09/15/29		111		99,772
2.30%, 03/12/31		118		99,108
Baxter International, Inc.
2.60%, 08/15/26		127		119,538
2.27%, 12/01/28		309		272,203
3.95%, 04/01/30(a)		87		81,433

Security	Par (000)		Value
Health Care Equipment & Supplies (continued)
Baxter International, Inc. (continued)
3.50%, 08/15/46(a)	$	87	$	63,199
3.13%, 12/01/51(a)		79		51,738
Becton Dickinson & Co.
3.70%, 06/06/27		279		268,047
4.69%, 02/13/28(a)		95		94,034
2.82%, 05/20/30(a)		82		72,356
1.96%, 02/11/31		185		151,803
4.30%, 08/22/32		80		75,911
4.69%, 12/15/44(a)		107		96,891
4.67%, 06/06/47		87		77,961
3.79%, 05/20/50(a)		37		29,020
Boston Scientific Corp.
2.65%, 06/01/30(a)		171		150,608
4.55%, 03/01/39(a)		130		121,627
4.70%, 03/01/49		93		86,104
Danaher Corp.
3.35%, 09/15/25(a)		75		73,354
4.38%, 09/15/45(a)		75		67,005
2.60%, 10/01/50		87		55,142
2.80%, 12/10/51		140		92,201
DH Europe Finance II SARL(a)
2.60%, 11/15/29		79		70,717
3.25%, 11/15/39		71		57,346
3.40%, 11/15/49		117		87,629
GE HealthCare Technologies, Inc.
5.60%, 11/15/25		150		150,505
5.65%, 11/15/27(a)		200		203,657
5.91%, 11/22/32(a)		200		209,974
6.38%, 11/22/52		100		112,858
Koninklijke Philips NV, 5.00%, 03/15/42		87		79,546
Medtronic Global Holdings SCA(a)
4.25%, 03/30/28		185		181,746
4.50%, 03/30/33		70		67,926
Medtronic, Inc., 4.38%, 03/15/35(a)		362		346,150
Revvity, Inc.(a)
1.90%, 09/15/28		90		78,375
2.25%, 09/15/31		219		179,651
Solventum Corp.(d)
5.45%, 02/25/27		65		65,225
5.40%, 03/01/29(a)		105		105,212
5.45%, 03/13/31		125		124,677
5.60%, 03/23/34		125		125,409
5.90%, 04/30/54(a)		125		124,692
6.00%, 05/15/64		125		123,907
STERIS Irish FinCo UnLtd Co., 2.70%, 03/15/31		216		184,316
Stryker Corp.
3.38%, 11/01/25		100		97,111
3.50%, 03/15/26(a)		87		84,360
4.85%, 12/08/28		50		50,017
4.63%, 03/15/46(a)		214		195,631
2.90%, 06/15/50(a)		87		59,990
Thermo Fisher Scientific, Inc.
4.95%, 08/10/26(a)		100		100,176
5.00%, 12/05/26(a)		50		50,207
4.80%, 11/21/27(a)		65		65,060
1.75%, 10/15/28(a)		67		59,127
5.00%, 01/31/29(a)		100		100,948
2.60%, 10/01/29(a)		168		150,746
4.98%, 08/10/30		65		65,465
2.00%, 10/15/31(a)		87		71,674
4.95%, 11/21/32(a)		95		95,409

30  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Health Care Equipment & Supplies (continued)
Thermo Fisher Scientific, Inc. (continued)
5.09%, 08/10/33	$	80	$	80,879
5.20%, 01/31/34(a)		50		50,992
2.80%, 10/15/41(a)		243		177,730
5.40%, 08/10/43(a)		40		40,903
4.10%, 08/15/47(a)		87		73,964
Zimmer Biomet Holdings, Inc.
5.35%, 12/01/28		50		50,719
2.60%, 11/24/31(a)		189		159,055
4.45%, 08/15/45		87		78,157
				8,164,328
Health Care Providers & Services — 0.8%
AdventHealth Obligated Group, Series E, 2.80%, 11/15/51(a)		73		48,602
Adventist Health System, 3.63%, 03/01/49(a)		70		51,405
Advocate Health & Hospitals Corp.
4.27%, 08/15/48		80		70,666
3.39%, 10/15/49(a)		79		59,450
Aetna, Inc.
6.75%, 12/15/37(a)		225		250,351
4.50%, 05/15/42(a)		87		75,272
4.75%, 03/15/44		76		67,275
AHS Hospital Corp., Series 2021, 2.78%, 07/01/51(a)		82		53,883
Allina Health System, Series 2021, 2.90%, 11/15/51(a)		70		46,512
Ascension Health
3.95%, 11/15/46		157		133,431
Series B, 2.53%, 11/15/29(a)		53		47,258
Series B, 3.11%, 11/15/39(a)		52		41,270
Banner Health(a)
2.91%, 01/01/42		76		55,889
2.91%, 01/01/51		78		52,634
Series 2020, 3.18%, 01/01/50		63		45,632
Baptist Healthcare System Obligated Group,
Series 20B, 3.54%, 08/15/50(a)		65		48,608
BayCare Health System, Inc., Series 2020, 3.83%, 11/15/50		72		59,029
Baylor Scott & White Holdings
Series 2021, 1.78%, 11/15/30		63		51,515
Series 2021, 2.84%, 11/15/50(a)		203		138,087
Beth Israel Lahey Health, Inc., Series L, 3.08%, 07/01/51(a)		86		55,604
Bon Secours Mercy Health, Inc.(a)
3.46%, 06/01/30		70		64,767
Series 2018, 4.30%, 07/01/28		64		62,341
Series 20-2, 3.21%, 06/01/50		60		42,410
Cardinal Health, Inc.
3.75%, 09/15/25(a)		87		84,988
5.13%, 02/15/29(a)		25		25,049
4.60%, 03/15/43(a)		50		43,601
4.90%, 09/15/45		200		179,559
4.37%, 06/15/47		87		73,373
Catholic Health Services of Long Island Obligated Group, Series 2020, 3.37%, 07/01/50		80		57,433
Cedars-Sinai Health System, Series 2021, 2.29%, 08/15/31(a)		70		58,546
Cencora, Inc.
3.45%, 12/15/27		130		123,547
2.80%, 05/15/30		71		62,687
2.70%, 03/15/31(a)		87		74,665

Security	Par (000)		Value
Health Care Providers & Services (continued)
Cencora, Inc. (continued)
4.25%, 03/01/45	$	87	$	76,949
Centene Corp.
2.45%, 07/15/28		450		399,021
4.63%, 12/15/29(a)		700		664,565
3.00%, 10/15/30		200		171,479
2.50%, 03/01/31		350		287,883
Children’s Health System of Texas, 2.51%, 08/15/50		71		44,604
Children’s Hospital Corp., Series 2017, 4.12%, 01/01/47(a)		70		60,409
Children’s Hospital of Philadelphia, Series 2020, 2.70%, 07/01/50(a)		51		33,521
CHRISTUS Health, Series C, 4.34%, 07/01/28		55		53,900
CommonSpirit Health
1.55%, 10/01/25		64		60,167
3.35%, 10/01/29		194		177,917
2.78%, 10/01/30		78		67,655
5.32%, 12/01/34		145		145,245
4.19%, 10/01/49		171		142,173
6.46%, 11/01/52(a)		69		79,293
5.55%, 12/01/54		100		101,186
Community Health Network, Inc., Series 20-A, 3.10%, 05/01/50(a)		75		51,162
Corewell Health Obligated Group, Series 19A, 3.49%, 07/15/49(a)		85		65,360
Cottage Health Obligated Group, Series 2020, 3.30%, 11/01/49		46		33,455
Dartmouth-Hitchcock Health, Series B, 4.18%, 08/01/48(a)		74		59,214
Dignity Health, 5.27%, 11/01/64(a)		74		69,905
Duke University Health System, Inc., Series 2017, 3.92%, 06/01/47		61		50,954
Elevance Health, Inc.
5.35%, 10/15/25(a)		40		40,021
1.50%, 03/15/26(a)		170		158,345
3.65%, 12/01/27		171		163,591
2.25%, 05/15/30		136		116,309
2.55%, 03/15/31(a)		121		103,375
4.10%, 05/15/32		61		57,116
5.50%, 10/15/32(a)		100		102,535
4.75%, 02/15/33(a)		120		117,106
4.63%, 05/15/42		150		136,254
5.10%, 01/15/44		155		147,146
4.65%, 08/15/44		62		55,864
4.38%, 12/01/47		171		146,880
4.55%, 03/01/48		80		70,323
3.70%, 09/15/49(a)		150		114,873
3.13%, 05/15/50(a)		146		101,596
3.60%, 03/15/51(a)		170		127,379
4.55%, 05/15/52(a)		61		53,384
5.13%, 02/15/53		150		143,751
Hackensack Meridian Health, Inc.
Series 2020, 2.68%, 09/01/41		69		49,434
Series 2020, 2.88%, 09/01/50(a)		136		91,419
Hartford HealthCare Corp., 3.45%, 07/01/54		62		45,348
HCA, Inc.
5.25%, 04/15/25		171		170,286
5.25%, 06/15/26(a)		171		170,501
5.38%, 09/01/26		200		199,953
4.50%, 02/15/27		500		490,232
3.13%, 03/15/27		78		73,768

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 31

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Health Care Providers & Services (continued)
HCA, Inc. (continued)
5.20%, 06/01/28	$	40	$	40,113
5.63%, 09/01/28(a)		250		253,107
5.88%, 02/01/29		250		255,610
4.13%, 06/15/29		130		123,115
3.50%, 09/01/30(a)		200		180,871
5.45%, 04/01/31(a)		25		25,130
2.38%, 07/15/31		171		140,617
3.63%, 03/15/32		300		265,571
5.50%, 06/01/33		80		80,288
5.60%, 04/01/34(a)		75		75,519
5.13%, 06/15/39(a)		171		161,384
5.50%, 06/15/47(a)		171		162,557
5.25%, 06/15/49		214		195,324
3.50%, 07/15/51		155		107,073
4.63%, 03/15/52		300		250,729
5.90%, 06/01/53(a)		75		75,414
6.00%, 04/01/54(a)		160		162,397
6.10%, 04/01/64		100		100,820
Hoag Memorial Hospital Presbyterian, 3.80%, 07/15/52(a)		70		56,917
Humana, Inc.
1.35%, 02/03/27		132		118,905
5.75%, 03/01/28		60		61,306
5.75%, 12/01/28(a)		25		25,618
3.70%, 03/23/29(a)		62		58,344
3.13%, 08/15/29(a)		87		78,988
5.38%, 04/15/31		50		50,027
2.15%, 02/03/32		81		64,763
5.88%, 03/01/33(a)		50		51,597
5.95%, 03/15/34(a)		25		25,959
4.63%, 12/01/42(a)		171		149,668
4.95%, 10/01/44		87		79,071
4.80%, 03/15/47		70		61,411
5.50%, 03/15/53		100		97,301
5.75%, 04/15/54		135		135,880
Indiana University Health, Inc. Obligated Group, Series 2021, 2.85%, 11/01/51		87		58,874
Inova Health System Foundation, 4.07%, 05/15/52(a)		74		63,137
Integris Baptist Medical Center, Inc., Series A, 3.88%, 08/15/50(a)		66		49,531
Johns Hopkins Health System Corp., 3.84%, 05/15/46(a)		62		51,505
Kaiser Foundation Hospitals
3.15%, 05/01/27		87		82,838
4.15%, 05/01/47(a)		191		164,356
Series 2019, 3.27%, 11/01/49		82		60,266
Series 2021, 2.81%, 06/01/41(a)		101		74,537
Series 2021, 3.00%, 06/01/51(a)		116		80,366
Laboratory Corp. of America Holdings
1.55%, 06/01/26		90		83,357
3.60%, 09/01/27(a)		87		83,062
2.70%, 06/01/31(a)		49		41,999
4.70%, 02/01/45		79		71,355
Mass General Brigham, Inc.
Series 2017, 3.77%, 07/01/48		85		68,178
Series 2020, 3.19%, 07/01/49(a)		87		62,612
Series 2020, 3.34%, 07/01/60		71		49,307
Mayo Clinic(a)
Series 2016, 4.13%, 11/15/52		75		65,971
Series 2021, 3.20%, 11/15/61		66		45,403

Security	Par (000)		Value
Health Care Providers & Services (continued)
McKesson Corp., 1.30%, 08/15/26(a)	$	155	$	141,876
MedStar Health, Inc., Series 20A, 3.63%, 08/15/49		74		56,520
Memorial Health Services, 3.45%, 11/01/49(a)		62		47,395
Memorial Sloan-Kettering Cancer Center(a)
5.00%, 07/01/42		70		68,150
4.13%, 07/01/52		70		59,637
Methodist Hospital, Series 20A, 2.71%, 12/01/50		77		50,222
Montefiore Obligated Group, 4.29%, 09/01/50		64		40,148
Mount Nittany Medical Center Obligated Group, Series 2022, 3.80%, 11/15/52(a)		57		45,392
Mount Sinai Hospital(a)
Series 2019, 3.74%, 07/01/49		75		56,911
Series 2020, 3.39%, 07/01/50		66		45,093
MyMichigan Health, Series 2020, 3.41%, 06/01/50		47		34,186
Nationwide Children’s Hospital, Inc., 4.56%, 11/01/52(a)		73		67,242
New York and Presbyterian Hospital(a)
2.26%, 08/01/40		87		59,473
4.02%, 08/01/45		53		45,900
2.61%, 08/01/60		87		49,965
Series 2019, 3.95%, 08/01/2119		72		53,186
Northwell Healthcare, Inc.
3.98%, 11/01/46(a)		70		56,372
4.26%, 11/01/47		70		58,008
3.81%, 11/01/49		57		43,416
Novant Health, Inc.
2.64%, 11/01/36		72		54,648
3.17%, 11/01/51		76		53,118
3.32%, 11/01/61(a)		76		50,753
OhioHealth Corp., 2.83%, 11/15/41(a)		59		43,385
Orlando Health Obligated Group
4.09%, 10/01/48		29		24,569
3.33%, 10/01/50(a)		67		50,052
PeaceHealth Obligated Group
Series 2018, 4.79%, 11/15/48(a)		79		70,345
Series 2020, 1.38%, 11/15/25		24		22,325
Series 2020, 3.22%, 11/15/50(a)		73		50,112
Piedmont Healthcare, Inc.(a)
2.86%, 01/01/52		66		43,400
Series 2042, 2.72%, 01/01/42		58		41,023
Presbyterian Healthcare Services, 4.88%, 08/01/52(a)		60		57,757
Providence St Joseph Health Obligated Group(a)
Series 19A, 2.53%, 10/01/29		82		70,170
Series 21A, 2.70%, 10/01/51		76		46,567
Series A, 3.93%, 10/01/48		77		59,943
Queen’s Health Systems, 4.81%, 07/01/52(a)		67		62,969
Quest Diagnostics, Inc.
4.20%, 06/30/29(a)		87		84,381
2.95%, 06/30/30		75		66,546
2.80%, 06/30/31(a)		71		60,832
4.70%, 03/30/45		87		78,806
Rady Children’s Hospital-San Diego, Series 21A, 3.15%, 08/15/51(a)		63		45,618
RWJ Barnabas Health, Inc., 3.95%, 07/01/46		80		66,336
Seattle Children’s Hospital, Series 2021, 2.72%, 10/01/50(a)		62		40,724
Sentara Healthcare, Series 2021, 2.93%, 11/01/51(a)		71		48,587
Sharp HealthCare, Series 20B, 2.68%, 08/01/50		91		57,644
Stanford Health Care, Series 2018, 3.80%, 11/15/48		64		52,390

32  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Health Care Providers & Services (continued)
Summa Health, 3.51%, 11/15/51(a)	$	70	$	51,976
Sutter Health
Series 2018, 4.09%, 08/15/48(a)		80		67,649
Series 20A, 2.29%, 08/15/30(a)		66		56,569
Series 20A, 3.16%, 08/15/40(a)		62		48,212
Series 20A, 3.36%, 08/15/50(a)		59		43,441
Series 20-A, 1.32%, 08/15/25		71		67,251
Texas Health Resources, 2.33%, 11/15/50(a)		58		35,016
Trinity Health Corp.(a)
Series 2019, 3.43%, 12/01/48		73		56,868
Series 2021, 2.63%, 12/01/40		83		59,920
UnitedHealth Group, Inc.
3.75%, 07/15/25		171		168,148
5.15%, 10/15/25(a)		25		25,030
1.25%, 01/15/26		74		69,337
3.10%, 03/15/26(a)		87		84,096
1.15%, 05/15/26(a)		171		158,166
3.45%, 01/15/27(a)		87		84,078
3.38%, 04/15/27(a)		171		164,544
4.60%, 04/15/27		55		54,682
5.25%, 02/15/28(a)		40		40,733
3.85%, 06/15/28(a)		171		165,665
4.25%, 01/15/29(a)		140		137,196
4.70%, 04/15/29		50		49,828
4.00%, 05/15/29		120		116,044
2.88%, 08/15/29(a)		124		113,175
5.30%, 02/15/30(a)		300		307,143
2.00%, 05/15/30(a)		79		67,141
4.90%, 04/15/31		75		75,035
2.30%, 05/15/31		197		166,888
5.35%, 02/15/33(a)		180		185,181
4.50%, 04/15/33(a)		140		135,481
5.00%, 04/15/34		75		75,131
4.63%, 07/15/35		97		94,358
5.80%, 03/15/36		120		128,645
6.88%, 02/15/38		74		86,835
3.50%, 08/15/39		111		91,436
2.75%, 05/15/40		75		55,189
5.95%, 02/15/41(a)		74		78,445
3.05%, 05/15/41		216		163,498
4.63%, 11/15/41		104		96,655
3.95%, 10/15/42		53		45,114
4.25%, 03/15/43(a)		87		77,658
4.75%, 07/15/45		307		287,829
4.20%, 01/15/47		130		111,038
4.25%, 04/15/47		171		147,467
3.75%, 10/15/47		87		68,774
4.45%, 12/15/48		171		152,198
3.70%, 08/15/49(a)		257		201,502
2.90%, 05/15/50(a)		221		149,165
3.25%, 05/15/51		87		62,545
4.75%, 05/15/52		100		92,743
5.88%, 02/15/53		270		292,114
5.05%, 04/15/53		140		135,971
5.38%, 04/15/54		175		177,984
3.88%, 08/15/59		171		132,379
3.13%, 05/15/60		100		65,759
4.95%, 05/15/62(a)		200		186,767
6.05%, 02/15/63		110		120,956
5.20%, 04/15/63(a)		190		184,818
5.50%, 04/15/64		75		76,304

Security	Par (000)		Value
Health Care Providers & Services (continued)
Universal Health Services, Inc.
1.65%, 09/01/26	$	155	$	141,270
2.65%, 10/15/30(a)		50		42,397
WakeMed, Series A, 3.29%, 10/01/52(a)		66		47,170
West Virginia United Health System Obligated Group, Series 2020, 3.13%, 06/01/50(a)		60		39,212
Willis-Knighton Medical Center, Series 2018, 4.81%, 09/01/48(a)		80		71,892
Yale-New Haven Health Services Corp., Series 2020, 2.50%, 07/01/50(a)		64		38,871
				22,932,867
Health Care REITs — 0.1%
DOC DR LLC, 2.63%, 11/01/31(a)		87		71,668
Healthcare Realty Holdings LP, 3.10%, 02/15/30(a)		171		148,889
Healthpeak OP LLC
4.00%, 06/01/25		87		85,409
1.35%, 02/01/27		62		55,950
2.13%, 12/01/28(a)		75		65,957
3.50%, 07/15/29(a)		57		52,753
3.00%, 01/15/30(a)		92		81,477
2.88%, 01/15/31(a)		90		77,270
5.25%, 12/15/32(a)		135		133,899
Omega Healthcare Investors, Inc.
4.50%, 04/01/27(a)		87		84,192
4.75%, 01/15/28		87		83,993
3.63%, 10/01/29(a)		104		92,832
3.25%, 04/15/33(a)		71		57,498
Sabra Health Care LP
3.90%, 10/15/29		50		45,070
3.20%, 12/01/31		87		72,270
Welltower OP LLC
4.00%, 06/01/25		214		210,365
4.25%, 04/01/26(a)		62		60,768
2.05%, 01/15/29		108		94,009
4.13%, 03/15/29(a)		171		163,653
3.10%, 01/15/30		171		153,727
2.75%, 01/15/31(a)		100		86,012
2.75%, 01/15/32		87		72,896
3.85%, 06/15/32		79		71,462
				2,122,019
Hotel & Resort REITs — 0.0%
Host Hotels & Resorts LP
Series E, 4.00%, 06/15/25		67		65,575
Series H, 3.38%, 12/15/29(a)		171		152,295
Series J, 2.90%, 12/15/31(a)		71		59,001
				276,871
Hotels, Restaurants & Leisure — 0.2%
Brunswick Corp.
2.40%, 08/18/31		66		52,551
5.10%, 04/01/52(a)		71		58,289
Choice Hotels International, Inc., 3.70%, 12/01/29		70		62,639
Darden Restaurants, Inc., 6.30%, 10/10/33		50		52,166
Hyatt Hotels Corp.(a)
4.38%, 09/15/28		76		73,695
5.75%, 04/23/30		87		89,209
Marriott International, Inc.
5.00%, 10/15/27(a)		55		54,837
5.55%, 10/15/28		50		51,055
5.30%, 05/15/34(a)		175		173,087
Series EE, 5.75%, 05/01/25		106		106,207
Series FF, 4.63%, 06/15/30(a)		171		166,365

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 33

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Hotels, Restaurants & Leisure (continued)
Marriott International, Inc. (continued)
Series GG, 3.50%, 10/15/32(a)	$	171	$	149,903
Series R, 3.13%, 06/15/26		171		163,449
Series X, 4.00%, 04/15/28(a)		171		164,445
McDonald’s Corp.
3.38%, 05/26/25		87		85,149
3.30%, 07/01/25(a)		60		58,659
3.70%, 01/30/26(a)		171		167,317
3.50%, 03/01/27(a)		171		165,152
3.50%, 07/01/27(a)		240		230,070
3.80%, 04/01/28(a)		171		164,863
4.80%, 08/14/28		50		50,144
4.95%, 08/14/33(a)		75		75,105
4.70%, 12/09/35(a)		79		76,835
6.30%, 10/15/37		200		219,531
6.30%, 03/01/38		171		187,984
3.70%, 02/15/42		74		60,105
4.60%, 05/26/45		171		153,629
4.88%, 12/09/45(a)		171		159,598
4.45%, 03/01/47		87		75,774
3.63%, 09/01/49		151		114,673
4.20%, 04/01/50		88		73,483
5.15%, 09/09/52		100		96,767
5.45%, 08/14/53(a)		75		76,106
Sands China Ltd.
5.13%, 08/08/25		300		295,680
5.40%, 08/08/28		200		196,198
4.63%, 06/18/30(a)		200		183,017
Starbucks Corp.
3.80%, 08/15/25		171		167,712
4.75%, 02/15/26		50		49,688
4.85%, 02/08/27(a)		25		24,953
4.00%, 11/15/28(a)		87		84,405
3.55%, 08/15/29(a)		214		202,059
2.55%, 11/15/30(a)		140		121,330
4.90%, 02/15/31		25		24,878
3.00%, 02/14/32(a)		132		115,468
4.80%, 02/15/33(a)		100		99,006
5.00%, 02/15/34		25		24,781
3.75%, 12/01/47(a)		171		134,424
3.35%, 03/12/50		171		121,934
3.50%, 11/15/50(a)		140		103,610
				5,657,984
Household Durables — 0.1%
DR Horton, Inc.(a)
1.30%, 10/15/26		174		158,266
1.40%, 10/15/27		171		151,661
Leggett & Platt, Inc.(a)
4.40%, 03/15/29		171		160,422
3.50%, 11/15/51		105		70,939
Lennar Corp.(a)
4.75%, 05/30/25		41		40,644
4.75%, 11/29/27		141		139,216
MDC Holdings, Inc.
2.50%, 01/15/31(a)		70		60,262
6.00%, 01/15/43		71		72,127
PulteGroup, Inc., 7.88%, 06/15/32		171		198,358
Toll Brothers Finance Corp.
4.88%, 11/15/25		74		73,153
4.88%, 03/15/27		75		74,133

Security	Par (000)		Value
Household Durables (continued)
Toll Brothers Finance Corp. (continued)
4.35%, 02/15/28(a)	$	75	$	72,479
Whirlpool Corp.(a)
2.40%, 05/15/31		86		71,197
4.70%, 05/14/32		70		67,087
5.50%, 03/01/33		50		50,395
5.75%, 03/01/34		25		25,079
4.50%, 06/01/46		87		71,180
				1,556,598
Household Products — 0.0%
Church & Dwight Co., Inc.
2.30%, 12/15/31		171		142,162
5.60%, 11/15/32		140		146,373
Clorox Co., 3.10%, 10/01/27(a)		87		82,233
Kimberly-Clark Corp.
2.75%, 02/15/26		87		83,764
2.00%, 11/02/31(a)		75		62,169
4.50%, 02/16/33(a)		100		98,457
5.30%, 03/01/41(a)		87		88,190
3.20%, 07/30/46		74		54,660
2.88%, 02/07/50(a)		140		96,153
				854,161
Industrial Conglomerates — 0.0%
3M Co.
3.00%, 08/07/25(a)		87		84,510
2.88%, 10/15/27(a)		130		121,088
3.38%, 03/01/29(a)		211		195,959
2.38%, 08/26/29(a)		169		148,165
3.13%, 09/19/46(a)		87		60,125
3.63%, 10/15/47		104		76,632
3.25%, 08/26/49(a)		175		121,047
3.70%, 04/15/50		87		64,263
Pentair Finance SARL, 5.90%, 07/15/32(a)		100		103,240
				975,029
Insurance — 0.7%
Aflac, Inc.(a)
1.13%, 03/15/26		171		158,409
2.88%, 10/15/26		130		123,437
4.75%, 01/15/49		87		79,505
Alleghany Corp.
3.63%, 05/15/30		121		113,181
3.25%, 08/15/51(a)		171		121,218
Allstate Corp.
3.28%, 12/15/26		130		123,895
5.25%, 03/30/33(a)		20		20,072
5.55%, 05/09/35(a)		160		166,070
4.50%, 06/15/43		53		46,536
4.20%, 12/15/46(a)		100		82,971
3.85%, 08/10/49		71		55,724
American Financial Group, Inc., 4.50%, 06/15/47		130		108,807
American International Group, Inc.
5.13%, 03/27/33(a)		70		69,610
6.25%, 05/01/36(a)		100		104,997
4.80%, 07/10/45		130		121,023
4.75%, 04/01/48(a)		171		158,024
4.38%, 06/30/50		87		75,476
Aon Corp.
4.50%, 12/15/28		171		167,516
3.75%, 05/02/29		171		161,537

34  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Insurance (continued)
Aon Corp./Aon Global Holdings PLC
2.85%, 05/28/27(a)	$	55	$	51,461
2.05%, 08/23/31(a)		87		70,970
2.60%, 12/02/31		59		49,641
5.00%, 09/12/32(a)		270		267,571
5.35%, 02/28/33(a)		25		25,135
2.90%, 08/23/51		100		63,679
3.90%, 02/28/52(a)		81		62,237
Aon Global Ltd.
3.88%, 12/15/25(a)		104		101,686
4.60%, 06/14/44		87		76,175
4.75%, 05/15/45		87		78,079
Aon North America, Inc.
5.13%, 03/01/27		75		75,449
5.15%, 03/01/29(a)		100		100,548
5.30%, 03/01/31		100		100,747
5.45%, 03/01/34(a)		100		101,154
5.75%, 03/01/54		170		174,285
Arch Capital Finance LLC, 4.01%, 12/15/26		171		165,730
Arch Capital Group Ltd., 3.64%, 06/30/50		100		74,282
Arch Capital Group U.S., Inc., 5.14%, 11/01/43(a)		66		62,929
Arthur J Gallagher & Co.
2.40%, 11/09/31		87		71,332
5.45%, 07/15/34		300		301,984
3.50%, 05/20/51		87		61,797
5.75%, 03/02/53		16		16,056
6.75%, 02/15/54		70		79,473
Assured Guaranty U.S. Holdings, Inc., 6.13%, 09/15/28		300		311,012
Athene Holding Ltd.
6.15%, 04/03/30(a)		100		103,778
6.65%, 02/01/33(a)		100		105,821
5.88%, 01/15/34		50		50,100
3.95%, 05/25/51		66		48,482
6.25%, 04/01/54		150		152,232
Berkshire Hathaway Finance Corp.
2.30%, 03/15/27(a)		133		125,239
1.85%, 03/12/30		87		74,224
1.45%, 10/15/30(a)		155		127,867
4.40%, 05/15/42		74		69,327
4.30%, 05/15/43		87		79,484
4.25%, 01/15/49		171		152,860
2.85%, 10/15/50		171		115,399
2.50%, 01/15/51(a)		132		84,290
3.85%, 03/15/52		400		323,346
Berkshire Hathaway, Inc.(a)
3.13%, 03/15/26		240		232,370
4.50%, 02/11/43		200		191,756
Brighthouse Financial, Inc.(a)
3.70%, 06/22/27		300		284,952
5.63%, 05/15/30		71		71,259
4.70%, 06/22/47		103		81,677
Brown & Brown, Inc.
2.38%, 03/15/31		171		141,718
4.95%, 03/17/52(a)		65		57,382
Chubb Corp.
6.00%, 05/11/37(a)		50		53,930
Series 1, 6.50%, 05/15/38		74		83,432
Chubb INA Holdings, Inc.
3.35%, 05/03/26(a)		138		133,306
1.38%, 09/15/30(a)		346		281,563
5.00%, 03/15/34		75		75,259
6.70%, 05/15/36(a)		150		171,023

Security	Par (000)		Value
Insurance (continued)
Chubb INA Holdings, Inc. (continued)
4.15%, 03/13/43	$	53	$	46,315
2.85%, 12/15/51(a)		87		59,361
3.05%, 12/15/61(a)		59		39,505
CNA Financial Corp.
4.50%, 03/01/26		562		554,183
3.90%, 05/01/29(a)		87		82,321
Corebridge Financial, Inc.
3.50%, 04/04/25		75		73,420
3.65%, 04/05/27		75		71,577
3.85%, 04/05/29		175		163,621
3.90%, 04/05/32		175		157,399
6.05%, 09/15/33(d)		50		51,506
5.75%, 01/15/34(a)		50		51,009
4.35%, 04/05/42		75		63,304
4.40%, 04/05/52		75		61,176
(5-year CMT + 3.85%), 6.88%, 12/15/52(b)		100		100,120
Enstar Group Ltd., 3.10%, 09/01/31		124		102,949
Equitable Holdings, Inc.
4.35%, 04/20/28		171		165,668
5.59%, 01/11/33		150		151,572
5.00%, 04/20/48		130		118,112
Everest Reinsurance Holdings, Inc.
3.50%, 10/15/50		87		61,022
3.13%, 10/15/52(a)		155		100,254
F&G Annuities & Life, Inc., 7.40%, 01/13/28		50		51,923
Fairfax Financial Holdings Ltd.
4.63%, 04/29/30(a)		171		162,960
5.63%, 08/16/32(a)		80		79,919
6.35%, 03/22/54(d)		135		137,714
Fidelity National Financial, Inc.
3.40%, 06/15/30		87		77,245
3.20%, 09/17/51(a)		58		36,997
First American Financial Corp., 2.40%, 08/15/31		78		61,700
Globe Life, Inc., 2.15%, 08/15/30(a)		40		33,512
Hanover Insurance Group, Inc.(a)
4.50%, 04/15/26		104		102,077
2.50%, 09/01/30		87		72,909
Hartford Financial Services Group, Inc.
2.80%, 08/19/29		87		78,064
5.95%, 10/15/36(a)		100		104,998
6.10%, 10/01/41(a)		74		78,868
2.90%, 09/15/51(a)		71		46,390
Jackson Financial, Inc., 3.13%, 11/23/31(a)		171		142,349
Kemper Corp., 3.80%, 02/23/32		74		63,238
Lincoln National Corp.
3.80%, 03/01/28(a)		57		54,537
5.85%, 03/15/34		25		24,679
6.30%, 10/09/37(a)		87		89,357
4.35%, 03/01/48		70		55,309
4.38%, 06/15/50		87		67,529
Loews Corp.
3.75%, 04/01/26		87		84,791
3.20%, 05/15/30		114		103,161
Manulife Financial Corp.
4.15%, 03/04/26		87		85,542
2.48%, 05/19/27(a)		171		158,692
3.70%, 03/16/32(a)		67		61,758
5.38%, 03/04/46		71		69,848
(5-year USD ICE Swap + 1.65%), 4.06%, 02/24/32(a)(b)		87		83,329
Markel Group, Inc.
3.35%, 09/17/29		82		74,467

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 35

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Insurance (continued)
Markel Group, Inc. (continued)
4.30%, 11/01/47(a)	$	130	$	105,725
4.15%, 09/17/50		87		69,105
3.45%, 05/07/52(a)		75		52,026
Marsh & McLennan Cos., Inc.
3.75%, 03/14/26(a)		171		167,200
4.38%, 03/15/29(a)		171		168,184
2.25%, 11/15/30		59		50,158
2.38%, 12/15/31		65		54,205
5.75%, 11/01/32		50		52,457
5.40%, 09/15/33(a)		50		51,300
5.15%, 03/15/34(a)		225		226,522
4.35%, 01/30/47(a)		87		74,416
4.20%, 03/01/48		87		73,284
4.90%, 03/15/49		171		159,188
2.90%, 12/15/51		52		33,446
6.25%, 11/01/52(a)		25		27,790
5.70%, 09/15/53		100		103,820
5.45%, 03/15/54(a)		25		25,091
MetLife, Inc.
4.55%, 03/23/30(a)		171		168,949
5.38%, 07/15/33		50		51,030
6.38%, 06/15/34(a)		307		335,117
5.88%, 02/06/41(a)		100		105,208
4.13%, 08/13/42(a)		75		63,759
4.88%, 11/13/43		200		187,824
4.72%, 12/15/44		50		45,016
4.05%, 03/01/45		87		72,404
4.60%, 05/13/46(a)		200		180,839
5.00%, 07/15/52(a)		60		56,485
5.25%, 01/15/54(a)		100		98,442
Old Republic International Corp.
5.75%, 03/28/34(a)		25		25,109
3.85%, 06/11/51		70		50,695
Primerica, Inc., 2.80%, 11/19/31(a)		74		61,763
Principal Financial Group, Inc.
3.40%, 05/15/25(a)		87		85,035
3.10%, 11/15/26(a)		171		162,842
3.70%, 05/15/29(a)		100		93,825
5.38%, 03/15/33(a)		40		40,313
4.63%, 09/15/42(a)		50		45,516
4.30%, 11/15/46		87		73,099
5.50%, 03/15/53		45		44,190
Progressive Corp.
2.45%, 01/15/27		87		81,539
2.50%, 03/15/27(a)		66		61,837
4.00%, 03/01/29(a)		75		72,607
3.00%, 03/15/32		145		126,338
4.95%, 06/15/33		40		39,937
4.35%, 04/25/44		74		66,127
3.70%, 01/26/45(a)		70		57,386
4.13%, 04/15/47		87		73,612
4.20%, 03/15/48(a)		87		75,369
3.70%, 03/15/52		60		46,797
Prudential Financial, Inc.
1.50%, 03/10/26(a)		171		160,015
3.88%, 03/27/28		120		115,732
3.00%, 03/10/40(a)		171		129,844
4.60%, 05/15/44		87		78,307
3.91%, 12/07/47		87		69,441
3.94%, 12/07/49		156		123,187
4.35%, 02/25/50		171		145,779

Security	Par (000)		Value
Insurance (continued)
Prudential Financial, Inc. (continued)
3.70%, 03/13/51(a)	$	200	$	153,183
(3-mo. LIBOR US + 2.67%), 5.70%, 09/15/48(a)(b)		171		169,122
(5-year CMT + 2.85%), 6.75%, 03/01/53(a)(b)		150		156,027
(5-year CMT + 3.04%), 3.70%, 10/01/50(b)		71		62,061
(5-year CMT + 3.16%), 5.13%, 03/01/52(b)		107		100,296
Prudential Funding Asia PLC(a)
3.13%, 04/14/30		171		153,512
3.63%, 03/24/32		87		78,490
Reinsurance Group of America, Inc.
3.90%, 05/15/29		82		77,383
6.00%, 09/15/33		20		20,740
RenaissanceRe Holdings Ltd., 5.75%, 06/05/33(a)		60		60,496
Travelers Cos., Inc.
6.75%, 06/20/36		87		98,946
6.25%, 06/15/37		87		95,775
5.35%, 11/01/40		200		202,823
4.60%, 08/01/43		148		137,305
4.30%, 08/25/45(a)		87		76,162
4.00%, 05/30/47		87		72,240
4.10%, 03/04/49		87		73,557
5.45%, 05/25/53(a)		40		41,431
Travelers Property Casualty Corp., 6.38%, 03/15/33(a)		74		82,187
Trinity Acquisition PLC, 4.40%, 03/15/26		87		85,342
Unum Group
4.00%, 06/15/29		71		66,978
5.75%, 08/15/42		87		85,161
4.50%, 12/15/49(a)		37		29,920
4.13%, 06/15/51		75		56,699
W R Berkley Corp.(a)
4.00%, 05/12/50		87		67,570
3.55%, 03/30/52		87		60,636
Willis North America, Inc.
4.65%, 06/15/27		71		69,856
4.50%, 09/15/28		257		250,398
5.35%, 05/15/33		40		39,806
3.88%, 09/15/49		100		75,231
5.90%, 03/05/54		75		75,925
				20,632,241
Interactive Media & Services — 0.1%
Alphabet, Inc.
0.45%, 08/15/25		62		58,411
2.00%, 08/15/26		427		401,892
0.80%, 08/15/27(a)		93		82,684
1.10%, 08/15/30(a)		112		91,713
1.90%, 08/15/40(a)		159		106,805
2.05%, 08/15/50(a)		140		83,765
2.25%, 08/15/60(a)		257		148,000
eBay, Inc.
1.40%, 05/10/26(a)		70		64,875
3.60%, 06/05/27(a)		171		164,188
2.70%, 03/11/30(a)		171		151,378
2.60%, 05/10/31(a)		201		172,762
3.65%, 05/10/51		87		64,494
JD.com, Inc., 3.38%, 01/14/30(a)		200		182,125
Meta Platforms, Inc.
3.50%, 08/15/27(a)		500		481,068
4.60%, 05/15/28(a)		60		59,968
4.80%, 05/15/30		60		60,329
3.85%, 08/15/32		415		388,882

36  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Interactive Media & Services (continued)
Meta Platforms, Inc. (continued)
4.95%, 05/15/33(a)	$	60	$	60,731
4.45%, 08/15/52		140		124,438
5.60%, 05/15/53(a)		360		380,497
4.65%, 08/15/62		200		179,578
5.75%, 05/15/63		160		171,525
Netflix, Inc.
5.88%, 11/15/28		200		207,906
6.38%, 05/15/29(a)		200		213,010
				4,101,024
Internet Software & Services — 0.0%
Booking Holdings, Inc.
3.60%, 06/01/26		257		249,573
4.63%, 04/13/30(a)		171		168,889
Expedia Group, Inc.(a)
5.00%, 02/15/26		87		86,490
3.80%, 02/15/28		130		123,661
3.25%, 02/15/30		142		127,825
2.95%, 03/15/31		54		47,124
VeriSign, Inc.
5.25%, 04/01/25(a)		171		170,274
4.75%, 07/15/27		171		168,420
				1,142,256
IT Services — 0.2%
Broadridge Financial Solutions, Inc.
3.40%, 06/27/26		69		66,262
2.90%, 12/01/29		87		77,039
2.60%, 05/01/31(a)		79		66,503
CGI, Inc.(a)
1.45%, 09/14/26		87		79,213
2.30%, 09/14/31		87		70,038
DXC Technology Co.
1.80%, 09/15/26		104		94,832
2.38%, 09/15/28(a)		71		61,678
Fidelity National Information Services, Inc.
1.15%, 03/01/26		103		95,358
1.65%, 03/01/28(a)		118		104,013
5.10%, 07/15/32(a)		100		99,999
3.10%, 03/01/41		89		64,865
Fiserv, Inc.
3.20%, 07/01/26		222		212,830
5.15%, 03/15/27		50		50,189
2.25%, 06/01/27(a)		307		282,017
5.45%, 03/02/28		60		60,701
5.38%, 08/21/28		50		50,500
4.20%, 10/01/28		171		165,000
3.50%, 07/01/29(a)		281		261,658
2.65%, 06/01/30(a)		164		142,790
5.35%, 03/15/31(a)		50		50,583
5.60%, 03/02/33(a)		40		40,781
5.63%, 08/21/33		50		51,079
5.45%, 03/15/34(a)		50		50,641
4.40%, 07/01/49		303		257,062
IBM International Capital Pte. Ltd.
4.70%, 02/05/26		100		99,281
4.60%, 02/05/27		100		98,955
4.60%, 02/05/29		100		98,583
4.75%, 02/05/31		100		98,123
4.90%, 02/05/34		100		98,022
5.25%, 02/05/44(a)		100		97,581
5.30%, 02/05/54		200		195,298

Security	Par (000)		Value
IT Services (continued)
International Business Machines Corp.
3.45%, 02/19/26	$	250	$	243,217
3.30%, 05/15/26(a)		257		247,972
2.20%, 02/09/27(a)		200		185,830
1.70%, 05/15/27		289		262,274
4.15%, 07/27/27(a)		100		97,854
4.50%, 02/06/28		250		247,751
3.50%, 05/15/29(a)		381		358,854
1.95%, 05/15/30		121		102,305
2.72%, 02/09/32(a)		180		155,909
4.40%, 07/27/32(a)		100		96,140
5.88%, 11/29/32(a)		87		92,518
4.15%, 05/15/39(a)		350		309,011
2.85%, 05/15/40		345		253,722
4.00%, 06/20/42		148		124,959
4.25%, 05/15/49(a)		330		280,033
2.95%, 05/15/50		116		77,288
4.90%, 07/27/52(a)		100		93,543
Kyndryl Holdings, Inc., 4.10%, 10/15/41		171		131,126
Leidos, Inc., 2.30%, 02/15/31		130		107,454
				6,809,234
Leisure Products — 0.0%
Hasbro, Inc.
3.55%, 11/19/26(a)		75		71,501
3.90%, 11/19/29		75		69,618
6.35%, 03/15/40		87		89,146
5.10%, 05/15/44		60		51,745
				282,010
Machinery — 0.3%
AGCO Corp.(a)
5.45%, 03/21/27		50		50,223
5.80%, 03/21/34		50		50,624
Caterpillar Financial Services Corp.
5.15%, 08/11/25		100		100,073
3.65%, 08/12/25(a)		100		98,007
0.80%, 11/13/25		171		160,015
5.05%, 02/27/26		50		50,072
4.35%, 05/15/26		100		98,910
1.15%, 09/14/26(a)		155		141,950
1.70%, 01/08/27		87		80,198
4.50%, 01/08/27(a)		25		24,837
3.60%, 08/12/27(a)		100		96,372
4.85%, 02/27/29		50		50,287
Caterpillar, Inc.
2.60%, 09/19/29		70		63,238
2.60%, 04/09/30(a)		87		77,765
1.90%, 03/12/31(a)		157		132,770
5.20%, 05/27/41		206		206,747
3.80%, 08/15/42		200		168,268
3.25%, 09/19/49(a)		171		126,663
3.25%, 04/09/50(a)		171		127,382
CNH Industrial Capital LLC
3.95%, 05/23/25		69		67,764
5.45%, 10/14/25(a)		100		100,178
1.88%, 01/15/26(a)		171		160,807
1.45%, 07/15/26		78		71,599
4.55%, 04/10/28(a)		40		39,192
5.50%, 01/12/29(a)		100		101,433
5.10%, 04/20/29		50		49,864
Cummins, Inc.
0.75%, 09/01/25(a)		87		81,949

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 37

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Machinery (continued)
Cummins, Inc. (continued)
4.88%, 10/01/43	$	300	$	288,562
2.60%, 09/01/50(a)		87		54,936
Deere & Co.
2.75%, 04/15/25		171		166,777
3.10%, 04/15/30(a)		87		79,458
3.90%, 06/09/42(a)		96		82,940
2.88%, 09/07/49(a)		68		48,005
3.75%, 04/15/50(a)		100		82,756
Dover Corp.
3.15%, 11/15/25		87		84,074
2.95%, 11/04/29(a)		60		54,068
Flowserve Corp., 2.80%, 01/15/32		70		57,543
IDEX Corp., 2.63%, 06/15/31		67		56,728
Illinois Tool Works, Inc.
4.88%, 09/15/41(a)		181		176,897
3.90%, 09/01/42		75		64,664
John Deere Capital Corp.
3.40%, 06/06/25(a)		35		34,306
4.95%, 06/06/25(a)		35		34,973
4.05%, 09/08/25		85		83,812
5.30%, 09/08/25(a)		25		25,091
4.80%, 01/09/26(a)		50		49,854
0.70%, 01/15/26		155		143,928
4.95%, 03/06/26(a)		50		50,012
4.75%, 06/08/26(a)		60		59,810
2.25%, 09/14/26(a)		87		81,718
1.30%, 10/13/26(a)		90		82,148
4.50%, 01/08/27(a)		50		49,618
1.70%, 01/11/27(a)		257		236,236
4.85%, 03/05/27		50		50,022
4.15%, 09/15/27(a)		100		98,216
3.05%, 01/06/28(a)		75		70,996
4.75%, 01/20/28(a)		50		50,107
1.50%, 03/06/28(a)		87		76,942
4.95%, 07/14/28(a)		35		35,264
4.50%, 01/16/29(a)		50		49,505
3.35%, 04/18/29		61		57,199
2.80%, 07/18/29(a)		110		100,337
4.85%, 10/11/29(a)		50		50,329
2.45%, 01/09/30		75		66,390
4.70%, 06/10/30(a)		60		59,669
1.45%, 01/15/31(a)		155		126,099
4.90%, 03/07/31		50		50,014
2.00%, 06/17/31		200		165,824
4.35%, 09/15/32(a)		100		96,866
Kennametal, Inc., 2.80%, 03/01/31(a)		55		46,618
Nordson Corp., 5.80%, 09/15/33(a)		25		26,096
nVent Finance SARL
2.75%, 11/15/31		65		53,526
5.65%, 05/15/33(a)		40		40,318
Otis Worldwide Corp.
2.06%, 04/05/25(a)		90		87,021
5.25%, 08/16/28(a)		30		30,390
2.57%, 02/15/30		171		150,362
3.11%, 02/15/40(a)		171		131,451
3.36%, 02/15/50		69		50,081
Parker-Hannifin Corp.
4.25%, 09/15/27		70		68,642
3.25%, 06/14/29(a)		341		315,911
4.50%, 09/15/29		100		98,470
4.20%, 11/21/34		87		80,542

Security	Par (000)		Value
Machinery (continued)
Parker-Hannifin Corp.(continued)
4.10%, 03/01/47(a)	$	87	$	71,995
4.00%, 06/14/49		87		71,065
Rockwell Automation, Inc.
1.75%, 08/15/31(a)		86		69,392
2.80%, 08/15/61		60		36,110
Snap-on, Inc., 3.10%, 05/01/50(a)		171		121,294
Stanley Black & Decker, Inc.
6.00%, 03/06/28(a)		100		103,111
4.25%, 11/15/28		171		165,823
2.30%, 03/15/30(a)		71		60,106
3.00%, 05/15/32(a)		76		64,539
4.85%, 11/15/48		87		76,372
2.75%, 11/15/50		75		44,413
(5-year CMT + 2.66%), 4.00%, 03/15/60(b)		104		91,598
Timken Co.
4.50%, 12/15/28		87		85,265
4.13%, 04/01/32(a)		75		68,655
Valmont Industries, Inc., 5.00%, 10/01/44(a)		171		150,806
Westinghouse Air Brake Technologies Corp.
3.20%, 06/15/25		87		84,493
4.70%, 09/15/28		87		85,573
Xylem, Inc./New York, 4.38%, 11/01/46(a)		87		74,698
				8,714,616
Media — 0.8%
Bell Telephone Co of Canada or Bell Canada(a)
5.20%, 02/15/34		50		49,554
5.55%, 02/15/54		50		49,916
Charter Communications Operating LLC/Charter Communications Operating Capital
4.91%, 07/23/25		330		325,984
6.15%, 11/10/26		115		115,901
3.75%, 02/15/28		87		80,700
4.20%, 03/15/28		200		188,506
2.25%, 01/15/29		286		243,309
5.05%, 03/30/29		171		164,882
2.80%, 04/01/31		141		115,531
4.40%, 04/01/33(a)		300		265,865
6.65%, 02/01/34(a)		150		153,757
6.38%, 10/23/35		87		85,980
5.38%, 04/01/38		171		148,545
3.50%, 06/01/41(a)		171		114,822
3.50%, 03/01/42(a)		87		58,049
6.48%, 10/23/45(a)		357		330,876
5.38%, 05/01/47		257		207,082
5.75%, 04/01/48		220		185,263
5.13%, 07/01/49		171		132,500
4.80%, 03/01/50		324		239,829
3.70%, 04/01/51(a)		104		64,319
3.90%, 06/01/52		275		174,891
5.25%, 04/01/53(a)		238		188,488
6.83%, 10/23/55		87		83,469
3.85%, 04/01/61(a)		253		150,112
4.40%, 12/01/61		121		79,010
3.95%, 06/30/62		100		60,331
Comcast Corp.
3.95%, 10/15/25		214		210,425
3.15%, 03/01/26(a)		300		290,463
2.35%, 01/15/27		148		138,441
3.30%, 02/01/27(a)		171		164,070
3.30%, 04/01/27		341		326,248
5.35%, 11/15/27		90		91,716

38  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Media (continued)
Comcast Corp. (continued)
3.15%, 02/15/28	$	214	$	201,793
3.55%, 05/01/28		171		163,165
4.15%, 10/15/28		379		369,906
4.55%, 01/15/29		80		79,356
2.65%, 02/01/30		163		144,967
3.40%, 04/01/30(a)		182		168,310
4.25%, 10/15/30(a)		171		165,194
1.95%, 01/15/31		146		121,312
1.50%, 02/15/31		281		226,872
5.50%, 11/15/32(a)		100		103,625
4.25%, 01/15/33		112		106,047
4.65%, 02/15/33(a)		160		157,016
4.80%, 05/15/33(a)		80		78,925
4.20%, 08/15/34		382		355,886
4.40%, 08/15/35		87		81,664
3.20%, 07/15/36(a)		87		71,468
6.45%, 03/15/37(a)		200		220,540
3.90%, 03/01/38		87		75,812
4.60%, 10/15/38		130		121,310
3.25%, 11/01/39		171		134,015
3.75%, 04/01/40		171		142,142
4.65%, 07/15/42		100		91,559
4.75%, 03/01/44		67		61,547
3.40%, 07/15/46(a)		87		64,956
4.00%, 08/15/47		87		70,554
3.97%, 11/01/47		257		206,576
4.00%, 03/01/48(a)		87		70,608
4.70%, 10/15/48(a)		214		195,958
4.00%, 11/01/49(a)		216		174,879
3.45%, 02/01/50		150		109,691
2.80%, 01/15/51		149		95,334
2.89%, 11/01/51(a)		505		327,807
2.45%, 08/15/52(a)		291		170,726
5.35%, 05/15/53(a)		280		277,899
2.94%, 11/01/56(a)		507		319,210
4.95%, 10/15/58		171		160,074
2.65%, 08/15/62		150		85,591
2.99%, 11/01/63(a)		301		184,855
5.50%, 05/15/64(a)		80		80,102
Discovery Communications LLC
4.90%, 03/11/26		58		57,424
3.95%, 03/20/28(a)		108		102,269
5.00%, 09/20/37(a)		87		76,488
6.35%, 06/01/40		100		98,262
5.20%, 09/20/47(a)		146		122,666
5.30%, 05/15/49		87		73,089
4.65%, 05/15/50(a)		171		133,578
4.00%, 09/15/55(a)		263		179,990
FactSet Research Systems, Inc.
2.90%, 03/01/27		75		70,510
3.45%, 03/01/32(a)		70		61,805
Fox Corp.
4.71%, 01/25/29(a)		171		168,606
3.50%, 04/08/30(a)		200		182,933
6.50%, 10/13/33(a)		50		52,959
5.48%, 01/25/39(a)		100		95,168
5.58%, 01/25/49		171		159,238
Grupo Televisa SAB(a)
6.63%, 01/15/40		87		88,740
5.00%, 05/13/45		200		168,875

Security	Par (000)		Value
Media (continued)
Interpublic Group of Cos., Inc.
4.75%, 03/30/30	$	171	$	167,660
5.38%, 06/15/33(a)		28		27,936
3.38%, 03/01/41(a)		71		52,989
NBCUniversal Media LLC
5.95%, 04/01/41(a)		109		114,731
4.45%, 01/15/43		72		63,925
Omnicom Group, Inc.
2.45%, 04/30/30		121		103,851
2.60%, 08/01/31(a)		68		57,599
Omnicom Group, Inc./Omnicom Capital, Inc.,
3.60%, 04/15/26		87		84,500
Paramount Global
3.38%, 02/15/28		87		77,564
3.70%, 06/01/28		87		77,086
4.95%, 01/15/31(a)		171		152,285
4.20%, 05/19/32(a)		171		142,059
6.88%, 04/30/36		87		82,169
4.85%, 07/01/42(a)		82		60,067
4.38%, 03/15/43		184		124,869
5.85%, 09/01/43		189		153,136
4.95%, 05/19/50(a)		171		121,562
TCI Communications, Inc., 7.88%, 02/15/26		87		91,227
Thomson Reuters Corp.(a)
3.35%, 05/15/26		74		71,231
5.65%, 11/23/43		171		168,670
Time Warner Cable Enterprises LLC, 8.38%, 07/15/33		87		97,100
Time Warner Cable LLC
6.55%, 05/01/37		212		200,397
6.75%, 06/15/39		199		189,542
5.88%, 11/15/40		87		75,361
5.50%, 09/01/41		300		249,733
4.50%, 09/15/42		87		64,363
TWDC Enterprises 18 Corp.
3.15%, 09/17/25(a)		58		56,406
3.00%, 02/13/26(a)		70		67,484
1.85%, 07/30/26		171		160,029
2.95%, 06/15/27(a)		130		123,584
4.13%, 06/01/44		87		75,657
3.00%, 07/30/46(a)		75		53,132
Series E, 4.13%, 12/01/41		87		76,089
Walt Disney Co.
3.70%, 10/15/25(a)		144		141,066
1.75%, 01/13/26		104		98,318
3.38%, 11/15/26		257		247,488
3.70%, 03/23/27		300		292,178
2.20%, 01/13/28(a)		171		157,097
2.00%, 09/01/29(a)		387		337,150
3.80%, 03/22/30(a)		171		162,938
2.65%, 01/13/31(a)		144		126,773
6.20%, 12/15/34(a)		62		68,659
6.40%, 12/15/35(a)		131		146,393
6.65%, 11/15/37		214		245,954
4.63%, 03/23/40(a)		171		163,279
3.50%, 05/13/40		275		226,061
5.40%, 10/01/43		100		102,054
4.75%, 09/15/44		87		81,699
4.95%, 10/15/45		15		14,284
2.75%, 09/01/49		171		113,583
4.70%, 03/23/50(a)		123		115,304
3.60%, 01/13/51(a)		290		224,655

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 39

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Media (continued)
Walt Disney Co. (continued)
3.80%, 05/13/60(a)	$	71	$	55,413
Warnermedia Holdings, Inc.
4.05%, 03/15/29(a)		168		157,269
4.28%, 03/15/32(a)		453		404,637
5.05%, 03/15/42		600		515,696
5.14%, 03/15/52		786		652,378
5.39%, 03/15/62		150		124,482
				21,667,486
Metals & Mining — 0.2%
AngloGold Ashanti Holdings PLC, 3.75%, 10/01/30		200		173,770
ArcelorMittal SA
4.55%, 03/11/26(a)		87		85,598
6.55%, 11/29/27(a)		50		51,882
4.25%, 07/16/29(a)		75		71,567
6.80%, 11/29/32(a)		50		53,471
7.00%, 10/15/39(a)		79		85,970
6.75%, 03/01/41		100		103,669
Barrick North America Finance LLC
5.70%, 05/30/41		87		89,114
5.75%, 05/01/43		87		89,863
Barrick PD Australia Finance Pty. Ltd., 5.95%, 10/15/39(a)		87		90,333
BHP Billiton Finance USA Ltd.
4.88%, 02/27/26(a)		60		59,796
5.25%, 09/08/26(a)		125		125,739
4.75%, 02/28/28(a)		60		59,874
5.10%, 09/08/28		125		126,393
5.25%, 09/08/30(a)		125		127,109
4.90%, 02/28/33(a)		35		34,700
5.25%, 09/08/33(a)		125		126,419
4.13%, 02/24/42		87		75,960
5.00%, 09/30/43(a)		400		385,107
Freeport-McMoRan, Inc.
5.00%, 09/01/27		71		70,435
4.13%, 03/01/28		87		83,130
4.38%, 08/01/28(a)		71		68,215
5.25%, 09/01/29(a)		71		71,021
4.25%, 03/01/30(a)		71		67,297
4.63%, 08/01/30(a)		103		98,928
5.40%, 11/14/34(a)		87		85,944
5.45%, 03/15/43		156		149,350
Newmont Corp.
2.80%, 10/01/29(a)		185		165,984
2.25%, 10/01/30(a)		87		74,033
5.88%, 04/01/35		87		90,959
6.25%, 10/01/39(a)		200		213,743
4.88%, 03/15/42		223		207,339
Newmont Corp/Newcrest Finance Pty Ltd.(a)(d)
5.30%, 03/15/26		50		50,123
5.35%, 03/15/34		50		50,319
Nucor Corp.
3.95%, 05/23/25		75		73,823
4.30%, 05/23/27		79		77,423
3.95%, 05/01/28(a)		171		165,284
2.70%, 06/01/30		171		151,785
2.98%, 12/15/55(a)		87		56,333
Rio Tinto Finance USA Ltd.(a)
7.13%, 07/15/28		171		186,534
5.20%, 11/02/40		62		61,810

Security	Par (000)		Value
Metals & Mining (continued)
Rio Tinto Finance USA Ltd.(a) (continued)
2.75%, 11/02/51	$	216	$	139,099
Rio Tinto Finance USA PLC
5.00%, 03/09/33(a)		65		65,377
4.75%, 03/22/42(a)		62		58,769
4.13%, 08/21/42		87		75,540
5.13%, 03/09/53(a)		70		68,031
Southern Copper Corp.
3.88%, 04/23/25(a)		130		127,397
6.75%, 04/16/40		80		88,600
5.25%, 11/08/42		150		141,891
5.88%, 04/23/45		277		276,388
Steel Dynamics, Inc.
2.40%, 06/15/25		45		43,332
1.65%, 10/15/27(a)		87		77,526
3.45%, 04/15/30(a)		90		82,566
3.25%, 01/15/31		72		64,115
3.25%, 10/15/50(a)		44		29,272
Teck Resources Ltd.
6.13%, 10/01/35		70		72,270
6.25%, 07/15/41(a)		70		71,504
5.20%, 03/01/42		100		91,362
Vale Overseas Ltd.
3.75%, 07/08/30(a)		171		153,793
6.13%, 06/12/33		300		302,250
6.88%, 11/10/39(a)		70		74,878
Vale SA, 5.63%, 09/11/42(a)		171		167,420
				6,607,526
Office REITs — 0.1%
Alexandria Real Estate Equities, Inc.
4.30%, 01/15/26		130		127,810
3.95%, 01/15/27(a)		87		83,986
3.38%, 08/15/31		141		125,721
2.00%, 05/18/32		73		57,210
1.88%, 02/01/33		102		77,489
2.95%, 03/15/34(a)		52		42,719
4.75%, 04/15/35(a)		200		188,995
5.25%, 05/15/36		40		39,258
4.85%, 04/15/49		87		76,340
3.00%, 05/18/51(a)		70		44,431
3.55%, 03/15/52		100		70,151
5.15%, 04/15/53		70		64,468
5.63%, 05/15/54		50		49,200
Corporate Office Properties LP
2.00%, 01/15/29		70		58,688
2.75%, 04/15/31		50		41,246
2.90%, 12/01/33		87		68,220
Highwoods Realty LP(a)
4.13%, 03/15/28		87		81,349
3.05%, 02/15/30		87		73,360
Kilroy Realty LP
4.75%, 12/15/28(a)		300		286,727
2.50%, 11/15/32		67		50,459
2.65%, 11/15/33		71		52,611
Piedmont Operating Partnership LP, 3.15%, 08/15/30(a)		87		68,257
				1,828,695

40  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Oil, Gas & Consumable Fuels — 1.7%
Apache Corp.
5.10%, 09/01/40	$	300	$	257,452
5.35%, 07/01/49		150		126,795
Boardwalk Pipelines LP
4.80%, 05/03/29(a)		87		85,711
3.60%, 09/01/32(a)		200		174,537
5.63%, 08/01/34		25		25,011
BP Capital Markets America, Inc.
3.80%, 09/21/25		171		168,067
3.41%, 02/11/26		341		331,495
3.12%, 05/04/26(a)		62		59,723
3.02%, 01/16/27(a)		77		73,497
3.54%, 04/06/27(a)		171		164,756
3.94%, 09/21/28		87		84,269
4.23%, 11/06/28		171		167,347
4.70%, 04/10/29		75		74,812
3.63%, 04/06/30(a)		171		161,069
1.75%, 08/10/30(a)		90		75,090
2.72%, 01/12/32(a)		87		74,962
4.81%, 02/13/33(a)		250		246,726
4.89%, 09/11/33		160		158,885
4.99%, 04/10/34(a)		75		74,903
3.06%, 06/17/41		70		53,140
3.00%, 02/24/50(a)		171		116,659
2.77%, 11/10/50(a)		141		91,268
2.94%, 06/04/51(a)		250		166,904
3.00%, 03/17/52(a)		287		194,338
3.38%, 02/08/61(a)		223		154,046
BP Capital Markets PLC
3.28%, 09/19/27(a)		87		82,802
3.72%, 11/28/28		171		163,564
Canadian Natural Resources Ltd.
3.85%, 06/01/27		87		83,902
2.95%, 07/15/30		87		76,704
6.50%, 02/15/37(a)		200		211,199
6.25%, 03/15/38		75		78,051
4.95%, 06/01/47(a)		100		90,462
Cenovus Energy, Inc.
2.65%, 01/15/32(a)		74		61,379
5.25%, 06/15/37(a)		53		50,699
6.75%, 11/15/39		200		220,363
5.40%, 06/15/47		52		48,977
3.75%, 02/15/52		66		48,525
Cheniere Corpus Christi Holdings LLC
5.13%, 06/30/27(a)		257		256,387
3.70%, 11/15/29		87		80,925
2.74%, 12/31/39		87		70,272
Cheniere Energy Partners LP(a)
4.00%, 03/01/31		150		136,336
3.25%, 01/31/32		200		170,367
5.95%, 06/30/33		100		102,237
Chevron Corp.
1.55%, 05/11/25		546		525,069
3.33%, 11/17/25(a)		87		85,107
2.95%, 05/16/26		214		206,039
2.00%, 05/11/27(a)		90		83,204
2.24%, 05/11/30(a)		163		142,566
3.08%, 05/11/50(a)		69		49,547
Chevron USA, Inc.
0.69%, 08/12/25		132		124,530
1.02%, 08/12/27		114		101,232
3.85%, 01/15/28		257		251,155
2.34%, 08/12/50(a)		87		53,043

Security	Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
CNOOC Finance 2015 USA LLC, Series 2015, 3.50%, 05/05/25	$	500	$	490,430
CNOOC Petroleum North America ULC(a)
7.88%, 03/15/32		324		387,024
6.40%, 05/15/37		71		79,786
Columbia Pipeline Group, Inc.
4.50%, 06/01/25		87		85,771
5.80%, 06/01/45		200		197,648
ConocoPhillips, 6.50%, 02/01/39(a)		100		113,440
ConocoPhillips Co.
5.05%, 09/15/33		70		70,633
3.76%, 03/15/42(a)		370		307,393
4.30%, 11/15/44		171		149,947
3.80%, 03/15/52		62		48,414
5.30%, 05/15/53(a)		160		158,877
5.55%, 03/15/54(a)		150		154,595
4.03%, 03/15/62		200		158,497
5.70%, 09/15/63(a)		50		52,406
Continental Resources, Inc.
4.38%, 01/15/28		121		116,929
4.90%, 06/01/44(a)		87		72,307
Coterra Energy, Inc.
4.38%, 03/15/29		171		164,620
5.60%, 03/15/34		50		50,377
DCP Midstream Operating LP, 5.60%, 04/01/44(a)		100		97,709
Devon Energy Corp.
5.85%, 12/15/25		87		87,472
5.88%, 06/15/28		112		112,575
5.60%, 07/15/41		87		83,856
4.75%, 05/15/42		231		201,057
5.00%, 06/15/45		87		77,194
Diamondback Energy, Inc.
3.50%, 12/01/29		171		158,182
3.13%, 03/24/31		65		57,584
6.25%, 03/15/33(a)		30		31,983
4.40%, 03/24/51(a)		87		72,070
4.25%, 03/15/52(a)		104		84,181
6.25%, 03/15/53(a)		100		107,885
Eastern Gas Transmission & Storage, Inc., 3.00%, 11/15/29		171		152,781
Enbridge Energy Partners LP
5.88%, 10/15/25		257		258,490
7.38%, 10/15/45		140		164,236
Enbridge, Inc.
1.60%, 10/04/26(a)		79		72,377
5.90%, 11/15/26(a)		85		86,579
4.25%, 12/01/26(a)		171		167,546
3.70%, 07/15/27(a)		171		164,369
6.00%, 11/15/28		60		62,384
3.13%, 11/15/29(a)		130		118,673
6.20%, 11/15/30(a)		35		37,080
5.70%, 03/08/33(a)		290		297,005
2.50%, 08/01/33(a)		171		137,785
4.00%, 11/15/49		96		74,766
3.40%, 08/01/51(a)		100		70,326
6.70%, 11/15/53		85		96,070
Energy Transfer LP
2.90%, 05/15/25		63		61,147
4.75%, 01/15/26		171		169,200
6.05%, 12/01/26		75		76,478
4.20%, 04/15/27(a)		171		166,267
5.50%, 06/01/27(a)		100		100,619
4.00%, 10/01/27		150		144,164

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 41

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
Energy Transfer LP (continued)
5.55%, 02/15/28	$	100	$	101,417
4.95%, 05/15/28(a)		171		169,571
5.25%, 04/15/29(a)		257		257,284
3.75%, 05/15/30(a)		571		526,293
6.40%, 12/01/30		40		42,223
5.75%, 02/15/33(a)		185		187,931
6.55%, 12/01/33		180		193,229
5.55%, 05/15/34(a)		300		300,914
4.90%, 03/15/35		87		82,243
6.50%, 02/01/42(a)		87		92,268
4.95%, 01/15/43(a)		87		76,983
5.15%, 02/01/43		87		77,719
5.95%, 10/01/43		53		52,364
5.30%, 04/01/44		74		68,024
5.00%, 05/15/44(a)		87		76,942
5.35%, 05/15/45(a)		87		80,338
6.13%, 12/15/45(a)		114		114,587
5.30%, 04/15/47		130		118,192
5.40%, 10/01/47		171		157,810
6.00%, 06/15/48		150		149,089
6.25%, 04/15/49		171		175,503
5.00%, 05/15/50		184		161,436
5.95%, 05/15/54		110		109,774
Enterprise Products Operating LLC
5.05%, 01/10/26		70		69,950
3.70%, 02/15/26(a)		334		326,343
4.60%, 01/11/27		50		49,696
3.95%, 02/15/27(a)		191		186,510
4.15%, 10/16/28(a)		171		166,339
3.13%, 07/31/29(a)		199		183,558
2.80%, 01/31/30(a)		149		133,549
5.35%, 01/31/33(a)		70		71,449
4.85%, 01/31/34(a)		150		147,753
5.95%, 02/01/41		53		56,090
4.45%, 02/15/43		142		126,642
4.85%, 03/15/44		121		113,080
4.90%, 05/15/46		189		176,624
4.25%, 02/15/48(a)		150		128,366
4.80%, 02/01/49(a)		171		157,494
4.20%, 01/31/50		192		162,310
3.70%, 01/31/51		75		57,945
3.20%, 02/15/52		121		84,763
3.30%, 02/15/53(a)		204		144,768
4.95%, 10/15/54		100		93,308
3.95%, 01/31/60		100		77,740
(3-mo. CME Term SOFR + 2.83%), 5.38%, 02/15/78(b)		171		159,367
Series E, (3-mo. CME Term SOFR + 3.29%), 5.25%, 08/16/77(b)		130		123,358
EOG Resources, Inc.
3.15%, 04/01/25		80		78,285
4.95%, 04/15/50		87		82,759
EQT Corp.
3.90%, 10/01/27(a)		140		133,075
5.00%, 01/15/29		70		68,572
7.00%, 02/01/30(a)		79		83,933
5.75%, 02/01/34		50		49,835
Equinor ASA
2.88%, 04/06/25(a)		341		333,054
3.13%, 04/06/30(a)		171		156,998
2.38%, 05/22/30(a)		171		149,737
5.10%, 08/17/40(a)		189		188,707

Security	Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
Equinor ASA (continued)
4.25%, 11/23/41(a)	$	75	$	67,149
4.80%, 11/08/43(a)		200		189,939
3.25%, 11/18/49		130		94,702
3.70%, 04/06/50(a)		171		135,579
Exxon Mobil Corp.
3.04%, 03/01/26(a)		108		104,600
2.28%, 08/16/26		87		82,370
3.29%, 03/19/27(a)		140		135,431
2.44%, 08/16/29		87		78,109
3.48%, 03/19/30		189		178,143
2.61%, 10/15/30(a)		440		389,874
3.00%, 08/16/39		87		68,066
4.23%, 03/19/40		206		187,664
4.11%, 03/01/46		171		147,487
3.10%, 08/16/49		257		183,553
4.33%, 03/19/50		283		250,428
3.45%, 04/15/51(a)		200		151,517
Hess Corp.(a)
7.13%, 03/15/33		171		193,528
5.60%, 02/15/41		96		97,835
5.80%, 04/01/47		171		175,821
HF Sinclair Corp., 5.88%, 04/01/26		87		87,582
Kinder Morgan Energy Partners LP
5.80%, 03/15/35(a)		171		173,507
6.50%, 02/01/37		74		77,358
6.95%, 01/15/38(a)		214		234,174
6.38%, 03/01/41(a)		87		90,132
5.00%, 08/15/42(a)		75		66,847
5.00%, 03/01/43		87		76,959
5.50%, 03/01/44		130		123,690
5.40%, 09/01/44		87		80,901
Kinder Morgan, Inc.
4.30%, 06/01/25		71		69,991
4.30%, 03/01/28(a)		257		250,812
5.00%, 02/01/29		80		79,671
2.00%, 02/15/31(a)		155		127,480
7.75%, 01/15/32		171		194,061
4.80%, 02/01/33		100		95,597
5.20%, 06/01/33(a)		260		256,054
5.40%, 02/01/34(a)		100		99,599
5.30%, 12/01/34(a)		87		85,537
5.55%, 06/01/45		214		204,196
5.20%, 03/01/48(a)		64		57,594
3.60%, 02/15/51		71		49,562
5.45%, 08/01/52(a)		100		94,383
Marathon Oil Corp.
5.30%, 04/01/29		50		49,909
5.70%, 04/01/34(a)		50		49,998
6.60%, 10/01/37(a)		87		91,531
5.20%, 06/01/45		87		78,114
Marathon Petroleum Corp.
4.70%, 05/01/25		171		169,548
3.80%, 04/01/28		171		164,067
6.50%, 03/01/41		150		163,093
4.75%, 09/15/44		87		77,410
4.50%, 04/01/48(a)		100		84,453
MPLX LP
4.88%, 06/01/25(a)		87		86,272
1.75%, 03/01/26(a)		125		116,849
4.13%, 03/01/27(a)		171		166,644
4.00%, 03/15/28		171		164,654
2.65%, 08/15/30		153		131,596

42  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
MPLX LP (continued)
4.95%, 09/01/32(a)	$	340	$	330,273
5.00%, 03/01/33		55		53,391
4.50%, 04/15/38(a)		300		266,412
5.20%, 12/01/47		87		79,971
4.70%, 04/15/48		100		85,307
5.50%, 02/15/49(a)		121		115,187
4.95%, 03/14/52(a)		149		130,876
5.65%, 03/01/53		25		24,453
4.90%, 04/15/58		100		83,752
Occidental Petroleum Corp.(a)
6.45%, 09/15/36		500		533,133
6.60%, 03/15/46		300		323,318
ONEOK Partners LP, 6.13%, 02/01/41		75		77,602
ONEOK, Inc.
5.85%, 01/15/26(a)		171		172,624
5.55%, 11/01/26		100		100,915
4.55%, 07/15/28(a)		87		85,334
5.65%, 11/01/28		100		102,220
4.35%, 03/15/29(a)		171		165,714
3.10%, 03/15/30(a)		171		152,913
3.25%, 06/01/30		75		67,793
5.80%, 11/01/30		75		77,264
6.10%, 11/15/32(a)		100		104,769
6.05%, 09/01/33(a)		400		417,182
4.25%, 09/15/46		87		69,897
4.95%, 07/13/47		171		150,309
4.20%, 10/03/47(a)		140		110,692
5.20%, 07/15/48		87		79,867
3.95%, 03/01/50(a)		79		58,259
4.50%, 03/15/50		87		70,942
7.15%, 01/15/51		50		56,297
6.63%, 09/01/53(a)		150		165,315
Ovintiv, Inc.
5.65%, 05/15/25		60		60,010
5.38%, 01/01/26		99		98,597
5.65%, 05/15/28(a)		60		60,992
8.13%, 09/15/30(a)		70		78,969
7.20%, 11/01/31		80		86,725
7.38%, 11/01/31(a)		87		95,326
6.25%, 07/15/33		40		41,588
6.50%, 08/15/34(a)		87		92,289
6.63%, 08/15/37(a)		50		52,195
7.10%, 07/15/53		40		44,753
Phillips 66
2.15%, 12/15/30(a)		171		143,452
4.65%, 11/15/34		233		221,812
5.88%, 05/01/42		74		77,743
4.88%, 11/15/44		214		199,748
3.30%, 03/15/52(a)		68		47,564
Phillips 66 Co.
3.55%, 10/01/26		87		84,022
4.95%, 12/01/27(a)		45		45,028
3.15%, 12/15/29		65		58,997
5.25%, 06/15/31(a)		50		50,667
5.30%, 06/30/33(a)		110		110,681
4.90%, 10/01/46		87		80,041
5.65%, 06/15/54		50		50,739
Pioneer Natural Resources Co.
5.10%, 03/29/26		95		94,880
1.90%, 08/15/30(a)		206		173,050
Plains All American Pipeline LP/PAA Finance Corp.
4.50%, 12/15/26		87		85,416

Security	Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
Plains All American Pipeline LP/PAA Finance Corp. (continued)
3.55%, 12/15/29(a)	$	171	$	156,925
5.15%, 06/01/42(a)		50		45,133
4.70%, 06/15/44		130		110,339
4.90%, 02/15/45		100		87,015
Sabine Pass Liquefaction LLC
5.88%, 06/30/26(a)		171		172,350
5.00%, 03/15/27		171		170,500
4.20%, 03/15/28		171		165,567
4.50%, 05/15/30(a)		141		135,601
5.90%, 09/15/37		60		62,309
Shell International Finance BV
3.25%, 05/11/25		214		209,769
2.88%, 05/10/26(a)		257		246,787
2.50%, 09/12/26(a)		171		162,070
3.88%, 11/13/28(a)		171		165,743
2.38%, 11/07/29		171		152,101
4.13%, 05/11/35(a)		130		121,605
6.38%, 12/15/38(a)		275		311,154
5.50%, 03/25/40(a)		75		78,321
2.88%, 11/26/41		87		64,610
4.55%, 08/12/43		121		112,374
4.38%, 05/11/45(a)		200		178,837
4.00%, 05/10/46(a)		514		432,350
3.75%, 09/12/46		155		125,158
3.13%, 11/07/49(a)		162		115,003
3.25%, 04/06/50(a)		200		145,188
Spectra Energy Partners LP, 4.50%, 03/15/45		140		118,382
Suncor Energy, Inc.
6.50%, 06/15/38(a)		257		273,957
6.85%, 06/01/39		87		95,476
4.00%, 11/15/47(a)		171		132,819
3.75%, 03/04/51(a)		79		58,558
Targa Resources Corp.
5.20%, 07/01/27(a)		50		49,928
6.15%, 03/01/29(a)		135		140,698
4.20%, 02/01/33		81		73,848
6.13%, 03/15/33		50		52,164
6.50%, 03/30/34		250		268,619
4.95%, 04/15/52		73		63,958
6.25%, 07/01/52		50		51,902
6.50%, 02/15/53(a)		50		53,579
Targa Resources Partners LP/Targa Resources Partners Finance Corp.
6.50%, 07/15/27		71		71,785
5.00%, 01/15/28(a)		71		69,986
6.88%, 01/15/29(a)		71		73,054
5.50%, 03/01/30		104		103,488
4.88%, 02/01/31		104		99,558
4.00%, 01/15/32		104		93,609
TC PipeLines LP, 3.90%, 05/25/27(a)		78		74,610
TotalEnergies Capital International SA
3.46%, 07/12/49		87		65,577
3.13%, 05/29/50(a)		171		121,779
3.39%, 06/29/60		171		120,074
TotalEnergies Capital SA, 3.88%, 10/11/28(a)		300		290,405
TransCanada PipeLines Ltd.
4.88%, 01/15/26		148		146,992
4.25%, 05/15/28		630		610,771
4.10%, 04/15/30(a)		257		242,708
2.50%, 10/12/31(a)		87		72,378
4.63%, 03/01/34(a)		130		122,725

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 43

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Oil, Gas & Consumable Fuels (continued)
TransCanada PipeLines Ltd. (continued)
5.60%, 03/31/34	$	87	$	88,094
6.20%, 10/15/37		70		73,147
4.75%, 05/15/38		64		58,860
7.25%, 08/15/38		87		99,653
7.63%, 01/15/39(a)		87		103,093
5.00%, 10/16/43		133		120,953
4.88%, 05/15/48		130		115,607
Transcontinental Gas Pipe Line Co. LLC
7.85%, 02/01/26(a)		87		90,247
4.00%, 03/15/28		130		125,238
4.45%, 08/01/42(a)		87		76,798
3.95%, 05/15/50(a)		87		68,774
Valero Energy Corp.
2.15%, 09/15/27(a)		191		174,183
4.35%, 06/01/28(a)		131		128,019
6.63%, 06/15/37		75		81,760
4.90%, 03/15/45(a)		87		80,106
3.65%, 12/01/51(a)		175		126,651
4.00%, 06/01/52(a)		51		39,256
Valero Energy Partners LP, 4.50%, 03/15/28		87		85,376
Western Midstream Operating LP
6.15%, 04/01/33		200		205,063
5.45%, 04/01/44(a)		200		183,823
5.25%, 02/01/50		100		89,452
Williams Cos., Inc.
4.00%, 09/15/25		87		85,340
5.40%, 03/02/26(a)		55		55,141
3.75%, 06/15/27(a)		130		125,101
5.30%, 08/15/28		200		201,694
4.90%, 03/15/29		50		49,669
3.50%, 11/15/30		200		181,767
2.60%, 03/15/31		211		179,777
4.65%, 08/15/32(a)		250		240,929
5.65%, 03/15/33(a)		100		102,598
5.15%, 03/15/34		50		49,549
6.30%, 04/15/40(a)		87		91,787
5.40%, 03/04/44		171		161,775
5.10%, 09/15/45(a)		155		143,405
4.85%, 03/01/48		87		77,570
5.30%, 08/15/52		130		124,166
				46,772,882
Paper & Forest Products — 0.0%
Georgia-Pacific LLC, 8.88%, 05/15/31		92		113,257
International Paper Co.
4.80%, 06/15/44		77		69,525
4.40%, 08/15/47(a)		237		198,560
4.35%, 08/15/48(a)		100		84,459
Suzano Austria GmbH
6.00%, 01/15/29		200		200,740
3.75%, 01/15/31(a)		261		230,496
Suzano International Finance BV, 5.50%, 01/17/27(a)		171		170,626
				1,067,663
Passenger Airlines — 0.1%
American Airlines Pass-Through Trust
Series 2016-2, Class AA, 3.20%, 12/15/29		59		53,886
Series 2019-1, Class AA, 3.15%, 08/15/33(a)		134		119,620
Series 2021-1, Class A, 2.88%, 01/11/36		157		133,520

Security	Par (000)		Value
Passenger Airlines (continued)
JetBlue Pass-Through Trust, Series 2019-1, Class AA, 2.75%, 11/15/33(a)	$	132	$	113,946
Southwest Airlines Co.
5.25%, 05/04/25(a)		267		265,935
5.13%, 06/15/27(a)		213		212,579
2.63%, 02/10/30		191		166,111
United Airlines Pass-Through Trust
Series 2016-1, Class AA, 3.10%, 01/07/30(a)		57		52,401
Series 2019-2, Class AA, 2.70%, 11/01/33(a)		193		164,698
Series 2020-1, Class A, 5.88%, 04/15/29(a)		184		183,263
Series 2023-1, Class A, 4.30%, 02/15/27		37		36,276
Series 2023-1, Class A, 5.80%, 07/15/37(a)		124		126,083
				1,628,318
Personal Care Products — 0.2%
Colgate-Palmolive Co.
3.10%, 08/15/25(a)		140		136,682
4.80%, 03/02/26(a)		20		20,061
3.10%, 08/15/27(a)		115		110,042
4.60%, 03/01/28(a)		20		20,212
3.25%, 08/15/32		65		58,791
4.60%, 03/01/33(a)		20		20,052
3.70%, 08/01/47(a)		130		108,548
Estee Lauder Cos, Inc., 5.00%, 02/14/34		25		24,800
Estee Lauder Cos., Inc.
3.15%, 03/15/27(a)		171		163,768
2.38%, 12/01/29(a)		69		60,671
2.60%, 04/15/30(a)		87		76,518
4.15%, 03/15/47(a)		87		73,118
3.13%, 12/01/49		119		82,127
5.15%, 05/15/53		100		97,249
Haleon U.S. Capital LLC
3.38%, 03/24/27(a)		290		277,523
3.38%, 03/24/29(a)		265		246,456
3.63%, 03/24/32		338		304,609
Kenvue, Inc.(a)
5.05%, 03/22/28		120		121,289
5.00%, 03/22/30		90		90,940
4.90%, 03/22/33		160		159,865
5.10%, 03/22/43		70		69,615
5.05%, 03/22/53		110		107,718
5.20%, 03/22/63		55		54,409
Procter & Gamble Co.
0.55%, 10/29/25(a)		216		202,096
4.10%, 01/26/26(a)		150		148,555
1.00%, 04/23/26(a)		98		90,961
2.85%, 08/11/27(a)		87		82,459
4.35%, 01/29/29(a)		50		49,897
3.00%, 03/25/30(a)		171		157,422
1.20%, 10/29/30		275		224,934
1.95%, 04/23/31(a)		171		145,392
2.30%, 02/01/32(a)		100		86,177
4.55%, 01/29/34(a)		50		49,725
3.55%, 03/25/40		87		74,463
3.60%, 03/25/50(a)		171		141,104
Unilever Capital Corp.
3.10%, 07/30/25		250		243,822
2.00%, 07/28/26(a)		260		243,793
2.90%, 05/05/27(a)		260		246,463
4.88%, 09/08/28(a)		100		101,096
2.13%, 09/06/29		174		153,307

44  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Personal Care Products (continued)
Unilever Capital Corp. (continued)
1.38%, 09/14/30	$	100	$	81,276
1.75%, 08/12/31(a)		174		142,124
5.00%, 12/08/33(a)		100		101,114
				5,251,243
Pharmaceuticals — 1.3%
AbbVie, Inc.
3.60%, 05/14/25(a)		257		252,239
3.20%, 05/14/26		245		236,470
2.95%, 11/21/26(a)		341		324,768
4.80%, 03/15/27(a)		225		225,232
4.25%, 11/14/28(a)		427		419,473
4.80%, 03/15/29		225		225,330
3.20%, 11/21/29		1,000		921,497
4.95%, 03/15/31		120		120,856
5.05%, 03/15/34(a)		331		335,103
4.55%, 03/15/35		110		106,320
4.50%, 05/14/35		249		239,372
4.30%, 05/14/36		70		65,721
4.05%, 11/21/39		408		363,283
4.63%, 10/01/42		200		186,504
4.40%, 11/06/42		240		217,836
5.35%, 03/15/44(a)		70		71,376
4.85%, 06/15/44		214		204,414
4.75%, 03/15/45		116		109,242
4.70%, 05/14/45		627		586,304
4.45%, 05/14/46		214		192,162
4.88%, 11/14/48(a)		171		163,564
4.25%, 11/21/49(a)		500		433,027
5.40%, 03/15/54(a)		330		339,667
5.50%, 03/15/64		60		61,704
Astrazeneca Finance LLC
1.20%, 05/28/26		171		157,958
4.80%, 02/26/27		100		99,957
4.88%, 03/03/28		100		100,241
1.75%, 05/28/28		149		132,294
4.85%, 02/26/29		100		100,282
4.90%, 03/03/30		50		50,378
4.90%, 02/26/31		100		100,330
2.25%, 05/28/31(a)		80		67,576
4.88%, 03/03/33		100		99,791
5.00%, 02/26/34(a)		100		100,411
AstraZeneca PLC
0.70%, 04/08/26		189		173,831
3.13%, 06/12/27(a)		87		82,821
4.00%, 01/17/29		257		249,224
1.38%, 08/06/30		189		154,258
6.45%, 09/15/37		275		310,871
4.38%, 11/16/45		163		146,032
4.38%, 08/17/48		155		138,389
Bristol-Myers Squibb Co.
4.95%, 02/20/26		75		74,985
3.20%, 06/15/26(a)		449		432,852
4.90%, 02/22/27(a)		50		50,112
3.90%, 02/20/28		171		166,063
4.90%, 02/22/29		70		70,295
3.40%, 07/26/29		149		139,961
1.45%, 11/13/30(a)		130		105,576
5.75%, 02/01/31(a)		100		104,954
5.10%, 02/22/31		35		35,338
2.95%, 03/15/32		130		113,547

Security	Par (000)		Value
Pharmaceuticals (continued)
Bristol-Myers Squibb Co.(continued)
5.90%, 11/15/33(a)	$	75	$	80,147
5.20%, 02/22/34		205		208,142
4.13%, 06/15/39(a)		287		254,322
3.55%, 03/15/42		75		60,149
5.50%, 02/22/44		30		30,703
4.63%, 05/15/44		250		229,947
5.00%, 08/15/45		170		162,808
4.35%, 11/15/47		140		120,888
4.55%, 02/20/48		135		120,763
4.25%, 10/26/49		400		341,599
2.55%, 11/13/50(a)		100		61,544
3.70%, 03/15/52		257		197,335
6.25%, 11/15/53		65		73,219
5.55%, 02/22/54(a)		430		442,205
3.90%, 03/15/62(a)		71		54,128
6.40%, 11/15/63		165		188,580
5.65%, 02/22/64		150		154,316
Cigna Group
3.25%, 04/15/25(a)		75		73,340
4.50%, 02/25/26(a)		57		56,302
1.25%, 03/15/26		37		34,274
3.40%, 03/01/27		130		124,565
3.05%, 10/15/27		171		160,488
5.00%, 05/15/29(a)		50		50,071
2.40%, 03/15/30(a)		149		128,670
2.38%, 03/15/31		75		63,164
5.13%, 05/15/31(a)		50		50,046
5.40%, 03/15/33(a)		70		71,273
5.25%, 02/15/34(a)		350		349,503
4.80%, 08/15/38		171		160,655
3.20%, 03/15/40(a)		171		129,444
4.80%, 07/15/46		214		194,531
3.88%, 10/15/47(a)		130		101,682
4.90%, 12/15/48		257		234,108
3.40%, 03/15/50		171		121,643
3.40%, 03/15/51		200		142,678
5.60%, 02/15/54		50		50,186
CVS Health Corp.
3.88%, 07/20/25		163		159,934
5.00%, 02/20/26(a)		75		74,738
2.88%, 06/01/26		300		286,008
3.63%, 04/01/27		62		59,642
1.30%, 08/21/27(a)		257		227,796
4.30%, 03/25/28(a)		395		385,471
5.00%, 01/30/29(a)		100		100,277
3.25%, 08/15/29		191		175,179
5.13%, 02/21/30(a)		80		80,241
3.75%, 04/01/30		298		277,683
1.75%, 08/21/30(a)		353		289,957
5.25%, 01/30/31(a)		75		75,560
1.88%, 02/28/31(a)		212		172,734
2.13%, 09/15/31		79		64,486
5.25%, 02/21/33		80		80,022
5.30%, 06/01/33(a)		100		100,235
4.88%, 07/20/35(a)		171		164,452
4.78%, 03/25/38(a)		627		579,021
4.13%, 04/01/40(a)		140		117,938
2.70%, 08/21/40		122		84,697
5.30%, 12/05/43		200		189,860
5.13%, 07/20/45		369		340,048
5.05%, 03/25/48		800		726,542

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 45

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Pharmaceuticals (continued)
CVS Health Corp. (continued)
4.25%, 04/01/50	$	104	$	84,272
5.63%, 02/21/53(a)		80		78,565
5.88%, 06/01/53		100		101,731
6.00%, 06/01/63(a)		100		103,238
Eli Lilly & Co.
2.75%, 06/01/25		45		43,818
4.50%, 02/09/27		100		99,717
3.10%, 05/15/27(a)		130		123,746
4.50%, 02/09/29(a)		100		99,651
3.38%, 03/15/29(a)		171		162,198
4.70%, 02/27/33(a)		50		49,871
4.70%, 02/09/34		600		596,658
3.70%, 03/01/45(a)		171		141,420
4.88%, 02/27/53		45		43,944
5.00%, 02/09/54		70		69,606
4.15%, 03/15/59(a)		200		170,379
2.50%, 09/15/60		104		61,278
4.95%, 02/27/63		100		97,272
5.10%, 02/09/64		100		99,521
GlaxoSmithKline Capital PLC, 3.38%, 06/01/29(a)		171		161,156
GlaxoSmithKline Capital, Inc.
3.63%, 05/15/25		171		168,287
3.88%, 05/15/28(a)		171		166,266
5.38%, 04/15/34(a)		87		92,933
6.38%, 05/15/38		200		226,145
4.20%, 03/18/43		104		93,012
Johnson & Johnson
2.45%, 03/01/26		405		388,056
2.95%, 03/03/27(a)		250		239,459
2.90%, 01/15/28(a)		171		161,985
4.38%, 12/05/33(a)		87		86,705
3.55%, 03/01/36(a)		330		293,435
3.63%, 03/03/37		87		77,206
5.95%, 08/15/37(a)		200		221,484
4.50%, 09/01/40		159		152,610
4.50%, 12/05/43		130		124,549
3.70%, 03/01/46		87		72,651
3.50%, 01/15/48(a)		214		170,378
2.45%, 09/01/60(a)		107		63,715
Mead Johnson Nutrition Co.
4.13%, 11/15/25		171		167,723
4.60%, 06/01/44		87		77,656
Merck & Co., Inc.
1.70%, 06/10/27		160		145,827
4.05%, 05/17/28(a)		45		44,236
1.90%, 12/10/28(a)		165		146,341
4.30%, 05/17/30(a)		80		78,235
1.45%, 06/24/30(a)		257		211,662
4.50%, 05/17/33		45		44,002
6.55%, 09/15/37(a)		300		342,592
3.90%, 03/07/39		87		76,884
4.15%, 05/18/43(a)		130		114,885
4.90%, 05/17/44		60		58,299
3.70%, 02/10/45		160		130,574
4.00%, 03/07/49		171		143,587
2.45%, 06/24/50(a)		171		105,983
2.75%, 12/10/51		200		130,751
5.00%, 05/17/53		45		44,057
2.90%, 12/10/61(a)		71		44,591
5.15%, 05/17/63(a)		135		133,698
Merck Sharp & Dohme Corp., 5.75%, 11/15/36(a)		130		140,053

Security	Par (000)		Value
Pharmaceuticals (continued)
Mylan, Inc.
4.55%, 04/15/28	$	140	$	135,261
5.40%, 11/29/43(a)		87		76,320
5.20%, 04/15/48		96		79,350
Novartis Capital Corp.
3.00%, 11/20/25		189		183,569
2.00%, 02/14/27(a)		87		81,035
3.10%, 05/17/27(a)		427		408,629
2.20%, 08/14/30(a)		171		148,375
4.40%, 05/06/44(a)		214		197,119
4.00%, 11/20/45		130		112,372
2.75%, 08/14/50(a)		90		60,924
Pfizer Investment Enterprises Pte. Ltd.
4.65%, 05/19/25		340		337,799
4.45%, 05/19/26(a)		340		336,466
4.45%, 05/19/28(a)		340		335,162
4.75%, 05/19/33		355		349,527
5.11%, 05/19/43(a)		300		293,356
5.30%, 05/19/53		780		775,503
5.34%, 05/19/63		300		293,965
Pfizer, Inc.
0.80%, 05/28/25(a)		265		252,505
2.75%, 06/03/26(a)		60		57,539
3.00%, 12/15/26(a)		130		124,431
3.60%, 09/15/28(a)		341		326,933
3.45%, 03/15/29(a)		140		132,559
2.63%, 04/01/30(a)		171		152,317
1.70%, 05/28/30(a)		142		119,290
1.75%, 08/18/31		171		139,526
4.00%, 12/15/36(a)		87		79,142
4.10%, 09/15/38(a)		171		154,678
3.90%, 03/15/39		87		75,304
7.20%, 03/15/39(a)		84		101,272
2.55%, 05/28/40		86		61,433
5.60%, 09/15/40(a)		200		208,228
4.30%, 06/15/43(a)		87		77,288
4.40%, 05/15/44(a)		87		79,727
4.13%, 12/15/46(a)		257		219,655
4.20%, 09/15/48		87		74,853
4.00%, 03/15/49		171		143,052
2.70%, 05/28/50(a)		240		160,721
Sanofi SA, 3.63%, 06/19/28		341		329,695
Shire Acquisitions Investments Ireland DAC,
3.20%, 09/23/26		324		309,902
Takeda Pharmaceutical Co. Ltd.
5.00%, 11/26/28		200		200,297
2.05%, 03/31/30		400		339,179
3.03%, 07/09/40		200		150,719
3.18%, 07/09/50		200		139,380
Utah Acquisition Sub, Inc.
3.95%, 06/15/26		87		84,054
5.25%, 06/15/46		87		72,177
Viatris, Inc.
1.65%, 06/22/25		171		162,613
2.30%, 06/22/27(a)		171		155,273
3.85%, 06/22/40(a)		171		126,292
4.00%, 06/22/50		200		137,784
Wyeth LLC(a)
6.50%, 02/01/34		87		96,362
5.95%, 04/01/37		87		93,986
Zoetis, Inc.
3.90%, 08/20/28(a)		171		164,536

46  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Pharmaceuticals (continued)
Zoetis, Inc. (continued)
2.00%, 05/15/30(a)	$	71	$	59,826
4.70%, 02/01/43		71		64,997
3.95%, 09/12/47(a)		87		70,634
4.45%, 08/20/48(a)		87		76,807
3.00%, 05/15/50(a)		71		48,908
				37,246,889
Professional Services — 0.0%
Concentrix Corp.
6.65%, 08/02/26		50		50,383
6.60%, 08/02/28(a)		50		50,561
6.85%, 08/02/33(a)		50		49,674
Jacobs Engineering Group, Inc.(a)
6.35%, 08/18/28		100		103,358
5.90%, 03/01/33		75		75,923
Verisk Analytics, Inc.
4.00%, 06/15/25		87		85,477
4.13%, 03/15/29		87		83,698
5.75%, 04/01/33(a)		55		57,173
3.63%, 05/15/50		58		42,947
				599,194
Real Estate Management & Development — 0.0%
CBRE Services, Inc.
4.88%, 03/01/26		87		86,081
2.50%, 04/01/31(a)		107		88,542
5.95%, 08/15/34		25		25,657
Essential Properties LP, 2.95%, 07/15/31(a)		41		33,253
Jones Lang LaSalle, Inc., 6.88%, 12/01/28(a)		25		26,474
				260,007
Residential REITs — 0.1%
AvalonBay Communities, Inc.
3.45%, 06/01/25		74		72,494
3.20%, 01/15/28		191		179,585
1.90%, 12/01/28(a)		104		91,160
3.30%, 06/01/29(a)		64		59,285
2.05%, 01/15/32(a)		130		106,864
5.30%, 12/07/33(a)		25		25,293
3.90%, 10/15/46		87		68,939
Camden Property Trust
5.85%, 11/03/26(a)		25		25,474
2.80%, 05/15/30		257		227,931
4.90%, 01/15/34		25		24,327
ERP Operating LP
3.25%, 08/01/27		87		82,010
3.50%, 03/01/28(a)		171		162,026
3.00%, 07/01/29(a)		128		116,310
2.50%, 02/15/30		72		63,009
1.85%, 08/01/31(a)		76		61,702
4.50%, 06/01/45(a)		87		74,678
Invitation Homes Operating Partnership LP
2.30%, 11/15/28(a)		79		69,900
5.45%, 08/15/30(a)		60		60,181
2.00%, 08/15/31		70		55,621
5.50%, 08/15/33		90		89,653
2.70%, 01/15/34		87		69,252
NNN REIT, Inc.
5.60%, 10/15/33		50		50,624
3.10%, 04/15/50(a)		171		112,188
3.00%, 04/15/52(a)		82		52,776
Realty Income Corp.
0.75%, 03/15/26(a)		100		91,656

Security	Par (000)		Value
Residential REITs (continued)
Realty Income Corp. (continued)
4.13%, 10/15/26(a)	$	171	$	166,995
3.00%, 01/15/27		171		161,560
3.95%, 08/15/27(a)		87		84,315
3.40%, 01/15/28		87		82,096
4.70%, 12/15/28		40		39,397
4.75%, 02/15/29(a)		50		49,384
3.25%, 06/15/29(a)		48		44,190
4.00%, 07/15/29(a)		75		71,236
3.10%, 12/15/29(a)		87		78,977
3.40%, 01/15/30(a)		87		79,220
3.25%, 01/15/31		116		103,482
5.63%, 10/13/32(a)		90		91,875
1.80%, 03/15/33(a)		72		54,547
4.90%, 07/15/33		60		57,972
5.13%, 02/15/34(a)		50		49,064
4.65%, 03/15/47		100		88,354
Store Capital LLC, 2.70%, 12/01/31(a)		87		68,456
Tanger Properties LP, 3.88%, 07/15/27(a)		171		158,797
UDR, Inc.
4.40%, 01/26/29		171		164,995
3.20%, 01/15/30		87		78,829
3.00%, 08/15/31(a)		87		75,518
1.90%, 03/15/33(a)		87		65,909
				4,008,106
Retail REITs — 0.1%
Federal Realty OP LP(a)
3.25%, 07/15/27		87		81,438
5.38%, 05/01/28		40		40,114
3.50%, 06/01/30		140		126,340
Regency Centers LP
2.95%, 09/15/29(a)		71		63,527
3.70%, 06/15/30		87		80,227
4.40%, 02/01/47(a)		87		71,394
Simon Property Group LP
3.30%, 01/15/26		257		248,408
1.38%, 01/15/27		121		110,057
3.38%, 06/15/27(a)		130		123,992
2.45%, 09/13/29		87		76,445
2.65%, 07/15/30		171		149,337
2.25%, 01/15/32(a)		121		98,888
2.65%, 02/01/32(a)		200		168,547
5.50%, 03/08/33(a)		100		101,836
4.75%, 03/15/42		74		66,783
4.25%, 10/01/44(a)		87		72,055
4.25%, 11/30/46(a)		87		71,635
3.25%, 09/13/49(a)		114		79,746
5.85%, 03/08/53		100		102,990
6.65%, 01/15/54		35		40,045
SITE Centers Corp., 4.25%, 02/01/26(a)		87		85,668
				2,059,472
Semiconductors & Semiconductor Equipment — 0.6%
Advanced Micro Devices, Inc.
3.92%, 06/01/32		75		70,535
4.39%, 06/01/52(a)		85		75,369
Analog Devices, Inc.
3.50%, 12/05/26		130		125,601
1.70%, 10/01/28		30		26,357
2.10%, 10/01/31(a)		75		62,198
2.80%, 10/01/41(a)		149		108,167
2.95%, 10/01/51(a)		65		44,080

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 47

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Semiconductors & Semiconductor Equipment (continued)
Applied Materials, Inc.
3.90%, 10/01/25	$	57	$	56,071
3.30%, 04/01/27		171		164,370
1.75%, 06/01/30		72		60,660
5.85%, 06/15/41(a)		75		81,492
4.35%, 04/01/47		130		117,127
2.75%, 06/01/50(a)		87		59,643
Broadcom Corp./Broadcom Cayman Finance Ltd.
3.88%, 01/15/27		270		261,746
3.50%, 01/15/28(a)		87		82,376
Broadcom, Inc.
3.15%, 11/15/25		62		59,976
3.46%, 09/15/26(a)		341		327,985
1.95%, 02/15/28(d)		67		59,745
4.00%, 04/15/29(d)		95		90,496
4.15%, 11/15/30(a)		125		118,198
2.45%, 02/15/31(d)		300		252,906
4.15%, 04/15/32(d)		108		100,196
4.30%, 11/15/32(a)		206		193,559
2.60%, 02/15/33(a)(d)		275		223,344
3.42%, 04/15/33(d)		202		175,114
3.47%, 04/15/34(d)		469		401,890
3.14%, 11/15/35(a)(d)		257		207,631
3.19%, 11/15/36(d)		200		159,170
4.93%, 05/15/37(d)		377		357,798
3.50%, 02/15/41(d)		179		138,933
3.75%, 02/15/51(a)(d)		225		170,428
Intel Corp.
3.70%, 07/29/25(a)		171		167,582
4.88%, 02/10/26		110		109,642
3.75%, 03/25/27(a)		140		135,906
3.75%, 08/05/27(a)		100		96,686
4.88%, 02/10/28(a)		115		115,284
1.60%, 08/12/28		63		55,283
4.00%, 08/05/29(a)		100		96,735
2.45%, 11/15/29		171		151,465
5.13%, 02/10/30		110		111,673
3.90%, 03/25/30		300		285,449
5.00%, 02/21/31(a)		45		45,046
2.00%, 08/12/31(a)		87		71,492
4.15%, 08/05/32(a)		200		189,952
5.20%, 02/10/33(a)		160		162,219
5.15%, 02/21/34		60		60,137
2.80%, 08/12/41		63		45,548
5.63%, 02/10/43(a)		45		46,528
4.10%, 05/19/46(a)		427		360,860
4.10%, 05/11/47		87		72,896
3.73%, 12/08/47		240		186,458
3.25%, 11/15/49		300		211,666
4.75%, 03/25/50		200		181,160
3.05%, 08/12/51		320		215,697
4.90%, 08/05/52		300		280,051
5.70%, 02/10/53(a)		130		134,384
5.60%, 02/21/54		30		30,567
3.10%, 02/15/60(a)		87		55,252
4.95%, 03/25/60(a)		121		112,787
3.20%, 08/12/61(a)		63		41,016
5.05%, 08/05/62		100		94,038
5.90%, 02/10/63		110		116,704
KLA Corp.
4.10%, 03/15/29(a)		87		84,965
4.65%, 07/15/32		50		49,203
4.70%, 02/01/34(a)		50		49,226

Security	Par (000)		Value
Semiconductors & Semiconductor Equipment (continued)
KLA Corp. (continued)
3.30%, 03/01/50	$	184	$	135,061
4.95%, 07/15/52(a)		90		86,747
5.25%, 07/15/62(a)		75		74,311
Lam Research Corp.
1.90%, 06/15/30		141		119,191
4.88%, 03/15/49		171		162,847
2.88%, 06/15/50		76		51,898
Marvell Technology, Inc.
1.65%, 04/15/26(a)		154		143,236
2.45%, 04/15/28		171		154,179
2.95%, 04/15/31		82		70,841
Microchip Technology, Inc.
4.25%, 09/01/25(a)		171		168,192
5.05%, 03/15/29		50		50,008
Micron Technology, Inc.
4.98%, 02/06/26		87		86,529
5.38%, 04/15/28		60		60,592
5.33%, 02/06/29(a)		87		87,791
6.75%, 11/01/29		150		161,004
4.66%, 02/15/30(a)		130		126,982
5.30%, 01/15/31		40		40,231
5.88%, 02/09/33		50		51,740
5.88%, 09/15/33(a)		60		62,206
3.37%, 11/01/41		87		64,636
3.48%, 11/01/51(a)		87		61,946
NVIDIA Corp.
3.20%, 09/16/26		171		165,161
1.55%, 06/15/28(a)		125		111,441
2.85%, 04/01/30(a)		114		103,475
2.00%, 06/15/31(a)		121		102,241
3.50%, 04/01/40		122		103,295
3.50%, 04/01/50		257		204,602
3.70%, 04/01/60(a)		52		41,443
NXP BV/NXP Funding LLC/NXP USA, Inc.
2.70%, 05/01/25		85		82,389
3.88%, 06/18/26(a)		81		78,750
4.40%, 06/01/27(a)		90		88,215
4.30%, 06/18/29		171		164,487
3.40%, 05/01/30		80		72,526
2.50%, 05/11/31		149		124,820
2.65%, 02/15/32		67		55,577
5.00%, 01/15/33		112		109,455
3.25%, 05/11/41(a)		87		64,310
3.13%, 02/15/42		87		62,423
3.25%, 11/30/51(a)		75		51,020
Qorvo, Inc., 4.38%, 10/15/29(a)		96		89,981
QUALCOMM, Inc.
3.25%, 05/20/27(a)		87		83,367
1.30%, 05/20/28(a)		184		161,323
2.15%, 05/20/30		105		91,095
1.65%, 05/20/32		142		112,480
4.25%, 05/20/32		52		50,111
5.40%, 05/20/33(a)		100		104,852
4.65%, 05/20/35(a)		87		86,255
4.80%, 05/20/45(a)		130		124,452
4.30%, 05/20/47		107		94,339
3.25%, 05/20/50(a)		140		103,441
4.50%, 05/20/52		133		119,426
6.00%, 05/20/53		100		111,776
Skyworks Solutions, Inc.(a)
1.80%, 06/01/26		58		53,735
3.00%, 06/01/31		67		56,192

48  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Semiconductors & Semiconductor Equipment (continued)
Texas Instruments, Inc.
1.13%, 09/15/26	$	85	$	77,735
4.60%, 02/08/27		25		24,964
4.60%, 02/15/28(a)		35		35,012
4.60%, 02/08/29(a)		25		25,039
2.25%, 09/04/29		118		104,515
1.90%, 09/15/31(a)		98		81,661
3.65%, 08/16/32		50		46,424
4.90%, 03/14/33		30		30,303
4.85%, 02/08/34		25		25,120
3.88%, 03/15/39(a)		171		153,013
4.15%, 05/15/48		171		147,218
4.10%, 08/16/52		25		21,214
5.00%, 03/14/53(a)		30		29,434
5.15%, 02/08/54(a)		25		25,096
5.05%, 05/18/63		170		165,560
TSMC Arizona Corp.
2.50%, 10/25/31		390		333,735
4.50%, 04/22/52(a)		200		192,920
Xilinx, Inc., 2.38%, 06/01/30(a)		240		208,240
				15,632,544
Software — 0.6%
Adobe, Inc.
2.15%, 02/01/27		219		204,478
2.30%, 02/01/30(a)		206		181,289
Autodesk, Inc.(a)
2.85%, 01/15/30		74		66,122
2.40%, 12/15/31		133		111,389
Electronic Arts, Inc.
1.85%, 02/15/31		72		58,991
2.95%, 02/15/51(a)		69		46,123
Intuit, Inc.
0.95%, 07/15/25		130		123,158
5.25%, 09/15/26		55		55,515
1.35%, 07/15/27		142		126,986
5.13%, 09/15/28		75		76,283
1.65%, 07/15/30(a)		169		139,687
5.20%, 09/15/33		75		76,386
5.50%, 09/15/53(a)		100		103,807
Microsoft Corp.
3.13%, 11/03/25		300		292,202
2.40%, 08/08/26		382		362,551
3.30%, 02/06/27(a)		766		742,473
3.40%, 06/15/27(a)(d)		171		164,850
1.35%, 09/15/30(d)		69		56,955
3.50%, 02/12/35(a)		200		184,212
3.45%, 08/08/36		104		93,072
3.70%, 08/08/46		171		145,784
2.53%, 06/01/50(a)		600		394,298
2.50%, 09/15/50(a)(d)		140		90,436
2.92%, 03/17/52		550		388,836
4.50%, 02/06/57(a)		341		326,173
2.68%, 06/01/60(a)		792		509,893
3.04%, 03/17/62		292		203,416
Oracle Corp.
2.50%, 04/01/25		621		602,270
2.95%, 05/15/25		87		84,714
5.80%, 11/10/25(a)		40		40,330
1.65%, 03/25/26		154		143,732
2.65%, 07/15/26		1,130		1,069,253

Security	Par (000)		Value
Software (continued)
Oracle Corp. (continued)
2.80%, 04/01/27(a)	$	257	$	241,027
3.25%, 11/15/27		130		122,369
2.30%, 03/25/28(a)		237		213,994
4.50%, 05/06/28(a)		65		64,033
6.15%, 11/09/29(a)		70		73,776
2.95%, 04/01/30		500		444,924
4.65%, 05/06/30		65		63,740
3.25%, 05/15/30(a)		163		147,788
2.88%, 03/25/31		267		232,150
6.25%, 11/09/32(a)		200		213,988
4.90%, 02/06/33(a)		100		97,905
4.30%, 07/08/34		384		354,153
3.90%, 05/15/35(a)		87		76,346
3.85%, 07/15/36		130		110,837
3.80%, 11/15/37		130		109,009
6.50%, 04/15/38(a)		200		217,365
6.13%, 07/08/39(a)		87		90,958
3.60%, 04/01/40		316		249,094
5.38%, 07/15/40		271		262,875
3.65%, 03/25/41		285		223,781
4.50%, 07/08/44		87		74,368
4.13%, 05/15/45		100		80,720
4.00%, 07/15/46		384		302,503
4.00%, 11/15/47		257		200,631
3.60%, 04/01/50(a)		400		288,990
3.95%, 03/25/51		346		263,630
6.90%, 11/09/52		250		287,663
5.55%, 02/06/53		140		136,953
4.38%, 05/15/55		214		172,228
3.85%, 04/01/60		359		255,507
4.10%, 03/25/61(a)		200		150,187
Roper Technologies, Inc.
1.00%, 09/15/25(a)		108		101,543
3.80%, 12/15/26		87		84,283
1.40%, 09/15/27(a)		65		57,668
2.95%, 09/15/29		76		68,362
2.00%, 06/30/30		67		55,921
1.75%, 02/15/31		86		69,236
Salesforce, Inc.
3.70%, 04/11/28(a)		341		330,842
1.50%, 07/15/28(a)		60		52,775
1.95%, 07/15/31		81		67,239
2.70%, 07/15/41		156		112,887
2.90%, 07/15/51(a)		237		159,867
3.05%, 07/15/61(a)		50		32,611
ServiceNow, Inc., 1.40%, 09/01/30		140		113,272
Take-Two Interactive Software, Inc.
3.55%, 04/14/25		82		80,445
5.00%, 03/28/26(a)		140		139,280
3.70%, 04/14/27		65		62,357
4.95%, 03/28/28(a)		140		139,462
4.00%, 04/14/32(a)		76		70,202
VMware, Inc.
1.40%, 08/15/26		341		311,421
4.70%, 05/15/30		141		137,251
2.20%, 08/15/31		200		162,757
Workday, Inc.
3.50%, 04/01/27		81		77,563

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 49

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Software (continued)
Workday, Inc. (continued)
3.70%, 04/01/29	$	61	$	57,522
3.80%, 04/01/32(a)		89		81,041
				15,714,963
Specialized REITs — 0.0%
CubeSmart LP(a)
3.00%, 02/15/30		100		88,302
2.00%, 02/15/31		87		69,983
Public Storage Operating Co.
1.50%, 11/09/26(a)		138		126,655
1.85%, 05/01/28		207		184,248
1.95%, 11/09/28(a)		133		117,271
5.13%, 01/15/29(a)		30		30,487
2.25%, 11/09/31(a)		87		72,210
5.35%, 08/01/53		100		100,452
				789,608
Specialty Retail — 0.0%
Best Buy Co., Inc., 1.95%, 10/01/30(a)		214		177,900
Dick’s Sporting Goods, Inc., 4.10%, 01/15/52		70		50,734
Ross Stores, Inc.(a)
4.60%, 04/15/25		87		86,180
1.88%, 04/15/31		171		140,068
Tractor Supply Co.
1.75%, 11/01/30		69		55,935
5.25%, 05/15/33(a)		20		20,149
				530,966
Technology Hardware, Storage & Peripherals — 0.4%
Apple, Inc.
1.13%, 05/11/25		112		107,239
3.20%, 05/13/25		130		127,354
0.55%, 08/20/25(a)		477		449,141
0.70%, 02/08/26(a)		87		80,713
3.25%, 02/23/26(a)		326		316,870
2.45%, 08/04/26(a)		241		228,957
2.05%, 09/11/26		206		193,366
3.35%, 02/09/27(a)		341		329,471
3.20%, 05/11/27(a)		257		246,091
2.90%, 09/12/27(a)		171		161,903
3.00%, 11/13/27(a)		171		162,460
1.20%, 02/08/28		450		397,861
4.00%, 05/10/28		1,080		1,062,977
1.40%, 08/05/28		470		413,061
3.25%, 08/08/29		200		187,837
2.20%, 09/11/29(a)		212		188,347
4.15%, 05/10/30(a)		80		78,852
1.65%, 05/11/30		240		202,870
1.65%, 02/08/31(a)		427		354,599
1.70%, 08/05/31(a)		70		57,612
3.35%, 08/08/32(a)		200		183,640
4.30%, 05/10/33(a)		580		577,442
4.50%, 02/23/36(a)		87		86,420
3.85%, 05/04/43		300		260,130
4.45%, 05/06/44(a)		87		82,699
3.45%, 02/09/45		231		186,182
4.38%, 05/13/45		87		80,314
4.65%, 02/23/46		338		325,127
3.85%, 08/04/46		130		109,993
4.25%, 02/09/47(a)		87		79,172
3.75%, 09/12/47		300		247,332
3.75%, 11/13/47		214		176,564

Security	Par (000)		Value
Technology Hardware, Storage & Peripherals (continued)
Apple, Inc. (continued)
2.95%, 09/11/49(a)	$	214	$	151,634
2.65%, 05/11/50(a)		206		136,787
2.40%, 08/20/50(a)		177		111,736
2.65%, 02/08/51		214		140,901
2.70%, 08/05/51		200		132,366
3.95%, 08/08/52		150		126,423
4.85%, 05/10/53(a)		80		79,484
2.55%, 08/20/60(a)		171		106,842
2.80%, 02/08/61		127		81,239
2.85%, 08/05/61		70		45,197
4.10%, 08/08/62		150		127,254
Dell International LLC/EMC Corp.
5.85%, 07/15/25		104		104,524
4.90%, 10/01/26(a)		171		169,945
5.25%, 02/01/28(a)		200		202,426
5.30%, 10/01/29		214		216,627
5.75%, 02/01/33(a)		60		62,109
5.40%, 04/15/34		50		50,117
8.10%, 07/15/36		69		83,410
3.38%, 12/15/41(a)		171		127,205
8.35%, 07/15/46		126		162,978
3.45%, 12/15/51(a)		32		22,517
Dell, Inc.(a)
7.10%, 04/15/28		71		76,144
6.50%, 04/15/38		71		76,063
Fortinet, Inc.
1.00%, 03/15/26		132		121,438
2.20%, 03/15/31(a)		152		126,871
Hewlett Packard Enterprise Co.
4.90%, 10/15/25(a)		214		212,571
1.75%, 04/01/26(a)		171		159,610
5.25%, 07/01/28(a)		20		20,168
6.20%, 10/15/35		87		92,834
6.35%, 10/15/45(a)		130		139,010
HP, Inc.
2.20%, 06/17/25		87		83,739
4.75%, 01/15/28(a)		50		49,709
4.00%, 04/15/29(a)		90		86,009
2.65%, 06/17/31(a)		171		144,985
5.50%, 01/15/33(a)		150		151,688
6.00%, 09/15/41(a)		112		116,347
NetApp, Inc., 1.88%, 06/22/25(a)		117		111,901
Western Digital Corp.
2.85%, 02/01/29(a)		74		64,383
3.10%, 02/01/32		80		64,415
				12,082,202
Textiles, Apparel & Luxury Goods — 0.1%
NIKE, Inc.
2.75%, 03/27/27		341		322,868
2.85%, 03/27/30(a)		171		154,509
3.25%, 03/27/40		171		137,675
3.88%, 11/01/45(a)		87		72,676
3.38%, 11/01/46		257		195,788
Tapestry, Inc.
7.05%, 11/27/25(a)		35		35,720
7.00%, 11/27/26(a)		125		128,790
7.35%, 11/27/28		75		79,028
7.70%, 11/27/30		50		53,321

50  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Textiles, Apparel & Luxury Goods (continued)
Tapestry, Inc. (continued)
7.85%, 11/27/33	$	150	$	162,793
VF Corp., 2.95%, 04/23/30(a)		87		71,821
				1,414,989
Tobacco — 0.3%
Altria Group, Inc.
2.35%, 05/06/25(a)		84		81,293
2.63%, 09/16/26(a)		341		321,400
6.20%, 11/01/28(a)		25		26,057
4.80%, 02/14/29(a)		95		94,067
3.40%, 05/06/30		76		69,021
2.45%, 02/04/32(a)		208		168,786
5.80%, 02/14/39(a)		257		260,423
3.40%, 02/04/41		171		125,444
4.25%, 08/09/42(a)		100		81,947
4.50%, 05/02/43		71		59,822
5.38%, 01/31/44(a)		226		222,603
3.88%, 09/16/46(a)		100		74,901
5.95%, 02/14/49(a)		100		101,773
4.45%, 05/06/50		114		90,644
3.70%, 02/04/51		155		108,316
4.00%, 02/04/61(a)		121		89,064
BAT Capital Corp.
3.22%, 09/06/26		171		162,692
4.70%, 04/02/27(a)		87		85,553
3.56%, 08/15/27		113		107,005
2.26%, 03/25/28(a)		104		92,579
3.46%, 09/06/29(a)		87		79,406
4.91%, 04/02/30(a)		104		101,740
6.34%, 08/02/30(a)		100		104,197
5.83%, 02/20/31		25		25,215
2.73%, 03/25/31(a)		100		84,081
4.74%, 03/16/32(a)		96		91,825
7.75%, 10/19/32		40		45,138
6.42%, 08/02/33(a)		90		94,146
6.00%, 02/20/34		200		202,509
4.39%, 08/15/37(a)		384		322,774
3.73%, 09/25/40		70		51,875
7.08%, 08/02/43(a)		50		53,344
4.54%, 08/15/47		231		178,353
4.76%, 09/06/49		100		79,589
5.28%, 04/02/50		87		74,703
3.98%, 09/25/50(a)		104		73,143
5.65%, 03/16/52		96		86,618
7.08%, 08/02/53(a)		75		80,854
BAT International Finance PLC
1.67%, 03/25/26		87		80,976
4.45%, 03/16/28		96		93,221
5.93%, 02/02/29(a)		200		205,285
Philip Morris International, Inc.
3.38%, 08/11/25(a)		130		126,916
5.00%, 11/17/25		200		199,480
4.88%, 02/13/26(a)		100		99,601
2.75%, 02/25/26(a)		73		69,979
4.75%, 02/12/27(a)		75		74,583
3.13%, 08/17/27(a)		171		161,694
5.13%, 11/17/27		200		201,034
4.88%, 02/15/28		100		99,724
5.25%, 09/07/28(a)		25		25,292
4.88%, 02/13/29(a)		75		74,522
5.63%, 11/17/29		155		159,630

Security	Par (000)		Value
Tobacco (continued)
Philip Morris International, Inc. (continued)
5.13%, 02/15/30(a)	$	100	$	99,999
5.50%, 09/07/30		25		25,479
1.75%, 11/01/30		41		33,457
5.13%, 02/13/31		75		74,508
5.75%, 11/17/32(a)		170		175,511
5.38%, 02/15/33		300		302,465
5.63%, 09/07/33		25		25,566
5.25%, 02/13/34		275		272,562
6.38%, 05/16/38		220		240,796
4.38%, 11/15/41		150		129,363
4.50%, 03/20/42		150		131,053
3.88%, 08/21/42		62		49,640
4.13%, 03/04/43(a)		79		65,275
4.88%, 11/15/43		237		216,497
4.25%, 11/10/44(a)		65		54,456
Reynolds American, Inc.
4.45%, 06/12/25(a)		107		105,569
5.70%, 08/15/35		82		80,072
6.15%, 09/15/43		53		52,568
5.85%, 08/15/45(a)		200		185,509
				8,245,182
Water Utilities — 0.1%
American Water Capital Corp.
2.95%, 09/01/27(a)		87		81,411
3.75%, 09/01/28(a)		257		245,482
3.45%, 06/01/29		87		81,189
2.30%, 06/01/31		155		129,141
4.45%, 06/01/32		90		86,737
5.15%, 03/01/34		50		50,165
4.30%, 09/01/45(a)		87		75,905
3.75%, 09/01/47		87		68,648
4.15%, 06/01/49		87		72,871
3.25%, 06/01/51(a)		155		110,915
5.45%, 03/01/54		50		50,426
Essential Utilities, Inc.(a)
2.40%, 05/01/31		171		141,643
5.38%, 01/15/34		25		24,875
3.35%, 04/15/50		171		119,650
5.30%, 05/01/52		61		57,070
				1,396,128
Wireless Telecommunication Services — 0.4%
America Movil SAB de CV
3.63%, 04/22/29		244		227,144
6.13%, 03/30/40		300		316,423
4.38%, 07/16/42		229		198,085
Orange SA, 9.00%, 03/01/31		437		530,444
Rogers Communications, Inc.
3.63%, 12/15/25(a)		267		259,110
2.90%, 11/15/26		171		161,235
3.20%, 03/15/27		73		69,297
3.80%, 03/15/32		58		52,124
5.30%, 02/15/34(a)		500		495,540
7.50%, 08/15/38(a)		100		115,916
4.50%, 03/15/42		59		51,242
5.00%, 03/15/44		87		79,790
4.30%, 02/15/48(a)		214		174,979
3.70%, 11/15/49		71		52,098
4.55%, 03/15/52(a)		240		201,943
T-Mobile U.S., Inc.
3.50%, 04/15/25		179		175,497

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 51

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Wireless Telecommunication Services (continued)
T-Mobile U.S., Inc. (continued)
1.50%, 02/15/26(a)	$	171	$	159,650
2.25%, 02/15/26(a)		150		141,939
2.63%, 04/15/26		100		94,990
3.75%, 04/15/27		300		288,932
5.38%, 04/15/27(a)		100		100,429
4.75%, 02/01/28		125		123,341
2.05%, 02/15/28		87		77,953
4.95%, 03/15/28(a)		85		84,795
4.80%, 07/15/28		80		79,338
4.85%, 01/15/29(a)		65		64,519
2.63%, 02/15/29		100		89,491
3.38%, 04/15/29		200		184,966
3.88%, 04/15/30(a)		800		749,426
2.55%, 02/15/31(a)		259		220,621
2.88%, 02/15/31(a)		100		86,845
3.50%, 04/15/31		225		203,192
2.25%, 11/15/31		59		48,447
2.70%, 03/15/32		130		109,322
5.20%, 01/15/33		200		200,222
5.05%, 07/15/33		275		272,015
5.75%, 01/15/34(a)		315		328,034
5.15%, 04/15/34(a)		35		34,883
4.38%, 04/15/40(a)		214		190,598
3.00%, 02/15/41(a)		141		103,853
4.50%, 04/15/50		295		255,706
3.30%, 02/15/51(a)		300		209,770
3.40%, 10/15/52(a)		341		241,869
5.65%, 01/15/53(a)		200		204,225
5.75%, 01/15/54(a)		330		341,722
6.00%, 06/15/54(a)		100		106,885
3.60%, 11/15/60		174		122,003
5.80%, 09/15/62(a)		100		103,237
Vodafone Group PLC
4.13%, 05/30/25(a)		257		253,086
7.88%, 02/15/30		74		84,356
6.15%, 02/27/37(a)		87		92,871
4.38%, 02/19/43(a)		163		140,828
4.88%, 06/19/49		150		134,296
4.25%, 09/17/50(a)		205		165,476
5.63%, 02/10/53(a)		150		149,076
5.13%, 06/19/59		104		95,059
5.75%, 02/10/63(a)		150		151,636
				10,050,769
Total Corporate Bonds — 25.2% (Cost: $770,908,614)				705,926,436
Foreign Agency Obligations
Canada — 0.3%
Canada Government International Bond
2.88%, 04/28/25		400		391,053
3.75%, 04/26/28(a)		300		292,441
Export Development Canada, 3.38%, 08/26/25		700		685,321
Province of Alberta Canada
1.00%, 05/20/25		511		487,897
3.30%, 03/15/28		341		325,255
1.30%, 07/22/30		341		281,802
Province of British Columbia Canada(a)
2.25%, 06/02/26		171		162,143
0.90%, 07/20/26		341		312,836

Security	Par (000)		Value
Canada (continued)
Province of British Columbia Canada(a) (continued)
4.20%, 07/06/33	$	400	$	387,914
Province of Manitoba Canada, Series HB, 1.50%, 10/25/28		341		298,728
Province of New Brunswick Canada, 3.63%, 02/24/28		171		164,161
Province of Ontario Canada
0.63%, 01/21/26		171		158,613
3.10%, 05/19/27(a)		400		382,331
1.05%, 05/21/27(a)		171		153,356
4.20%, 01/18/29		500		493,646
2.00%, 10/02/29		171		150,347
1.13%, 10/07/30		341		276,429
1.60%, 02/25/31		341		282,815
Province of Quebec Canada
0.60%, 07/23/25		341		321,984
2.50%, 04/20/26(a)		469		447,935
2.75%, 04/12/27(a)		341		322,867
3.63%, 04/13/28(a)		500		482,726
1.35%, 05/28/30		341		283,848
Series PD, 7.50%, 09/15/29		500		571,004
				8,117,452
Chile — 0.1%
Chile Government International Bond
2.75%, 01/31/27		300		281,531
4.85%, 01/22/29		200		198,875
2.45%, 01/31/31		417		356,926
2.55%, 07/27/33		390		317,339
3.50%, 01/31/34(a)		200		175,426
3.10%, 05/07/41		200		147,988
4.34%, 03/07/42		200		174,562
4.00%, 01/31/52(a)		290		229,191
5.33%, 01/05/54		287		276,572
3.10%, 01/22/61(a)		318		200,539
				2,358,949
Germany — 0.0%
Landwirtschaftliche Rentenbank, 1.75%, 07/27/26(a)		171		160,268
Hungary — 0.0%
Hungary Government International Bond, 7.63%, 03/29/41		134		154,979
Indonesia — 0.1%
Indonesia Government International Bond
4.15%, 09/20/27(a)		200		194,750
4.10%, 04/24/28		522		506,014
2.85%, 02/14/30(a)		490		437,631
2.15%, 07/28/31(a)		400		331,125
4.65%, 09/20/32		200		194,522
4.35%, 01/11/48(a)		284		248,589
5.35%, 02/11/49		200		201,437
4.20%, 10/15/50(a)		322		271,687
3.05%, 03/12/51		211		149,480
4.30%, 03/31/52		300		256,969
3.20%, 09/23/61(a)		222		147,353
				2,939,557
Israel — 0.1%
Israel Government International Bond
3.25%, 01/17/28		318		296,535
4.50%, 01/17/33		200		186,438
5.50%, 03/12/34		400		395,375

52  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Israel (continued)
Israel Government International Bond (continued)
4.50%, 01/30/43(a)	$	415	$	357,289
4.13%, 01/17/48		322		250,757
5.75%, 03/12/54		200		191,500
State of Israel, 2.50%, 01/15/30(a)		490		421,094
				2,098,988
Italy — 0.0%
Republic of Italy Government International Bond
1.25%, 02/17/26		511		473,958
2.88%, 10/17/29		200		176,915
5.38%, 06/15/33(a)		130		128,099
4.00%, 10/17/49(a)		417		309,555
				1,088,527
Japan — 0.1%
Japan Bank for International Cooperation
3.88%, 09/16/25(a)		500		491,143
2.75%, 11/16/27		500		467,624
4.63%, 07/19/28		300		300,075
3.25%, 07/20/28(a)		690		653,833
2.00%, 10/17/29		200		174,801
1.88%, 04/15/31(a)		514		430,969
Series DTC, 2.25%, 11/04/26		500		469,190
Japan International Cooperation Agency
2.75%, 04/27/27		300		282,414
4.00%, 05/23/28		300		291,153
				3,561,202
Mexico — 0.2%
Mexico Government International Bond
4.13%, 01/21/26(a)		511		501,578
4.15%, 03/28/27		500		487,344
4.50%, 04/22/29		300		290,250
3.25%, 04/16/30		500		445,250
2.66%, 05/24/31		200		166,800
4.75%, 04/27/32(a)		211		200,186
4.88%, 05/19/33(a)		200		189,625
3.50%, 02/12/34		450		375,187
6.35%, 02/09/35(a)		200		206,625
6.00%, 05/07/36		500		501,000
6.05%, 01/11/40		394		390,183
4.28%, 08/14/41		518		416,472
4.75%, 03/08/44		378		316,102
5.55%, 01/21/45(a)		260		242,369
4.60%, 01/23/46(a)		318		256,586
4.35%, 01/15/47(a)		200		155,700
4.60%, 02/10/48(a)		390		313,219
4.50%, 01/31/50(a)		273		215,261
5.00%, 04/27/51(a)		390		328,575
4.40%, 02/12/52(a)		200		153,188
6.34%, 05/04/53(a)		200		197,813
6.40%, 05/07/54		250		249,766
3.77%, 05/24/61		200		130,250
5.75%, 12/31/99(a)		88		77,055
Series A, 6.75%, 09/27/34(a)		53		56,660
				6,863,044
Panama — 0.1%
Panama Government International Bond
7.13%, 01/29/26		400		405,750
3.16%, 01/23/30		200		166,062
2.25%, 09/29/32		690		488,865
6.40%, 02/14/35(a)		200		188,600

Security	Par (000)		Value
Panama (continued)
Panama Government International Bond (continued)
6.70%, 01/26/36(a)	$	462	$	447,216
4.50%, 04/16/50(a)		232		155,875
4.30%, 04/29/53		200		129,063
6.85%, 03/28/54		200		180,700
4.50%, 04/01/56		392		253,820
3.87%, 07/23/60(a)		397		228,275
				2,644,226
Peru — 0.1%
Peruvian Government International Bond
2.39%, 01/23/26		238		225,505
4.13%, 08/25/27(a)		520		503,913
2.84%, 06/20/30(a)		215		188,730
2.78%, 01/23/31		341		292,940
1.86%, 12/01/32(a)		130		99,247
8.75%, 11/21/33(a)		77		95,119
3.00%, 01/15/34(a)		388		318,039
6.55%, 03/14/37		287		311,843
3.30%, 03/11/41(a)		141		105,838
5.63%, 11/18/50(a)		240		238,200
2.78%, 12/01/60(a)		214		123,518
3.60%, 01/15/72		75		49,734
3.23%, 07/28/2121		87		50,107
				2,602,733
Philippines — 0.1%
Philippines Government International Bond
10.63%, 03/16/25		—		—
3.00%, 02/01/28(a)		300		279,656
7.75%, 01/14/31(a)		257		297,638
5.00%, 07/17/33(a)		500		499,430
6.38%, 10/23/34		250		276,094
5.00%, 01/13/37		522		516,780
3.95%, 01/20/40		250		215,313
3.70%, 02/02/42		397		325,416
5.95%, 10/13/47		400		427,750
				2,838,077
Poland — 0.1%
Republic of Poland Government International Bond
3.25%, 04/06/26(a)		214		208,087
5.50%, 11/16/27(a)		300		307,302
5.75%, 11/16/32		300		314,073
4.88%, 10/04/33		300		295,215
5.13%, 09/18/34		279		278,099
5.50%, 04/04/53(a)		200		199,942
5.50%, 03/18/54		326		323,571
				1,926,289
South Korea — 0.1%
Export-Import Bank of Korea
3.25%, 11/10/25(a)		500		485,710
5.00%, 01/11/28		300		303,252
4.50%, 09/15/32(a)		200		195,310
5.13%, 01/11/33		500		509,250
Korea Development Bank
4.38%, 02/15/28		500		494,610
2.00%, 10/25/31(a)		500		408,522

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 53

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
South Korea (continued)
Korea International Bond(a)
4.13%, 06/10/44	$	250	$	225,058
3.88%, 09/20/48		200		170,730
				2,792,442
Supranational — 0.9%
African Development Bank
4.13%, 02/25/27		1,000		988,068
4.38%, 11/03/27		500		498,044
Series GDIF, 0.88%, 03/23/26		1,341		1,244,914
Asian Development Bank
4.25%, 01/09/26(a)		700		693,894
0.50%, 02/04/26		341		315,592
1.00%, 04/14/26		341		316,611
2.00%, 04/24/26(a)		171		161,969
2.63%, 01/12/27(a)		171		162,486
2.50%, 11/02/27(a)		341		318,848
2.75%, 01/19/28(a)		130		122,313
5.82%, 06/16/28		681		712,364
1.75%, 09/19/29(a)		341		297,991
1.88%, 01/24/30		500		436,005
1.50%, 03/04/31		500		415,472
Asian Infrastructure Investment Bank
0.50%, 01/27/26		500		462,910
4.00%, 01/18/28		500		491,825
Corp. Andina de Fomento, 2.25%, 02/08/27(a)		300		276,414
European Bank for Reconstruction & Development, 0.50%, 05/19/25		341		324,298
European Investment Bank
0.63%, 07/25/25		1,341		1,267,264
0.38%, 03/26/26		1,700		1,560,530
2.13%, 04/13/26(a)		171		162,529
0.75%, 10/26/26		247		224,424
4.38%, 03/19/27		1,000		996,501
3.25%, 11/15/27(a)		500		480,067
1.75%, 03/15/29		300		265,722
1.63%, 10/09/29(a)		130		112,939
0.88%, 05/17/30		500		407,747
Inter-American Development Bank
0.88%, 04/03/25		511		489,953
0.88%, 04/20/26(a)		511		473,105
2.00%, 06/02/26(a)		87		82,162
2.38%, 07/07/27		171		160,007
1.13%, 07/20/28(a)		511		446,456
3.13%, 09/18/28		300		284,893
2.25%, 06/18/29(a)		500		451,240
1.13%, 01/13/31		427		346,976
3.20%, 08/07/42(a)		130		106,162
4.38%, 01/24/44(a)		75		71,978
International Bank for Reconstruction & Development
0.63%, 04/22/25(a)		500		477,900
0.38%, 07/28/25		511		481,677
0.50%, 10/28/25		641		599,549
3.13%, 06/15/27		400		383,904
0.75%, 11/24/27(a)		500		437,960
1.13%, 09/13/28(a)		850		739,613
3.63%, 09/21/29		300		289,440
0.75%, 08/26/30(a)		800		640,239
1.25%, 02/10/31(a)		500		408,777
1.63%, 11/03/31		750		618,976
2.50%, 03/29/32(a)		700		613,840

Security	Par (000)		Value
Supranational (continued)
International Bank for Reconstruction & Development (continued)
4.75%, 02/15/35	$	87	$	88,941
Series GDIF, 2.50%, 07/29/25(a)		171		165,692
Series GDIF, 1.88%, 10/27/26(a)		130		121,540
Series GDIF, 2.50%, 11/22/27(a)		341		318,860
Series GDIF, 1.38%, 04/20/28		500		444,158
International Finance Corp.
0.38%, 07/16/25		341		321,704
0.75%, 10/08/26(a)		341		310,367
0.75%, 08/27/30(a)		341		273,100
Nordic Investment Bank, 4.38%, 03/14/28		500		498,409
				24,865,319
Sweden — 0.0%
Svensk Exportkredit AB
2.25%, 03/22/27(a)		500		466,981
4.13%, 06/14/28		500		492,463
				959,444
Uruguay — 0.1%
Uruguay Government International Bond
4.38%, 10/27/27(a)		171		169,504
4.38%, 01/23/31(a)		427		418,059
5.75%, 10/28/34		150		158,344
7.63%, 03/21/36(a)		300		362,719
5.10%, 06/18/50		384		371,400
4.98%, 04/20/55		200		187,687
				1,667,713
Total Foreign Agency Obligations — 2.4% (Cost: $72,892,506)				67,639,209
Municipal Bonds
Alabama — 0.0%
Alabama Federal Aid Highway Finance Authority, Refunding RB, Series B, 2.65%, 09/01/37		30		23,980
Arizona — 0.0%
Salt River Project Agricultural Improvement & Power District, RB, BAB, 4.84%, 01/01/41(a)		85		82,689
California — 0.2%
Bay Area Toll Authority, RB, BAB
Series S-1, 6.92%, 04/01/40		120		137,296
Series S-1, 7.04%, 04/01/50		75		90,008
Bay Area Toll Authority, Refunding RB, Series F-3, 3.13%, 04/01/55		95		66,493
California Health Facilities Financing Authority, RB, M/F Housing(a)
Sustainability Bonds, 4.19%, 06/01/37		65		60,074
Sustainability Bonds, 4.35%, 06/01/41		85		77,198
California State University, RB
Series B, 5.18%, 11/01/53(a)		50		49,670
Series E, 2.90%, 11/01/51		75		54,122
California State University, Refunding RB, Series B, 2.98%, 11/01/51		180		128,220
City of Los Angeles Department of Airports Customer Facility Charge Revenue, Refunding ARB, Class A, Sustainability Bonds, (AGM), 4.24%, 05/15/48(a)		60		53,035

54  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
California (continued)
City of San Francisco California Public Utilities Commission Water Revenue, RB, BAB, 6.95%, 11/01/50	$	75	$	88,383
East Bay Municipal Utility District Water System Revenue, RB, BAB, 5.87%, 06/01/40		75		80,707
Foothill-Eastern Transportation Corridor Agency, Refunding RB
Series A, 4.09%, 01/15/49		80		67,348
Series A, (AGM), 3.92%, 01/15/53		65		52,947
Golden State Tobacco Securitization Corp., Refunding RB
Class B, (SAP), 2.75%, 06/01/34		60		50,810
Class B, (SAP), 3.29%, 06/01/42(a)		150		116,440
Class B, (SAP), 3.00%, 06/01/46		40		37,109
Series A-1, 3.71%, 06/01/41		80		62,906
Subordinate, 3.85%, 06/01/50		75		69,921
Los Angeles Community College District, GO, BAB, 6.75%, 08/01/49(a)		100		118,896
Los Angeles Community College District, Refunding GO, 2.11%, 08/01/32(a)		125		104,853
Los Angeles County Public Works Financing Authority, Refunding RB, BAB, 7.62%, 08/01/40		75		91,662
Los Angeles Department of Water & Power, RB, BAB
5.72%, 07/01/39		75		78,609
6.57%, 07/01/45		125		142,883
Los Angeles Unified School District, GO, BAB
Series KR, 5.76%, 07/01/29		85		86,366
Series KR, 5.75%, 07/01/34		160		165,702
Regents of the University of California Medical Center Pooled Revenue, RB
Series N, 3.71%, 05/15/2120		100		69,071
Series Q, 4.13%, 05/15/32		70		66,895
Series Q, 4.56%, 05/15/53(a)		85		77,334
Regents of the University of California Medical Center Pooled Revenue, RB, BAB, Series H, 6.55%, 05/15/48		65		73,979
San Diego County Regional Transportation Commission, RB, BAB, 5.91%, 04/01/48		70		73,636
San Diego County Water Authority, RB, BAB, Series B, 6.14%, 05/01/49		85		93,302
San Joaquin Hills Transportation Corridor Agency, Refunding RB, Series B, (AGM), 3.49%, 01/15/50		75		57,889
State of California, GO, BAB
7.30%, 10/01/39		460		538,619
7.35%, 11/01/39		280		331,527
7.60%, 11/01/40		325		401,333
State of California, Refunding GO
3.38%, 04/01/25		75		73,811
3.50%, 04/01/28		70		67,375
2.50%, 10/01/29(a)		220		197,667
5.75%, 10/01/31		250		265,685
4.60%, 04/01/38		65		62,787
5.20%, 03/01/43(a)		55		55,025
University of California, RB
Series AD, 4.86%, 05/15/2112		75		69,559
Series AQ, 4.77%, 05/15/2115(a)		72		65,253
Series BD, 3.35%, 07/01/29(a)		110		103,786

Security	Par (000)		Value
California (continued)
University of California, RB (continued)
Series BG, 0.88%, 05/15/25	$	90	$	85,900
University of California, Refunding RB, Series AX, 3.06%, 07/01/25		75		73,317
				5,035,408
Colorado — 0.0%
Regional Transportation District Sales Tax Revenue, RB, BAB, Series B, 5.84%, 11/01/50		75		80,928
Connecticut — 0.0%
State of Connecticut, GO, Series A, 5.85%, 03/15/32(a)		110		115,765
District of Columbia — 0.0%
District of Columbia Income Tax Revenue, RB, BAB, Series E, 5.59%, 12/01/34		75		76,309
District of Columbia Water & Sewer Authority, RB, Series A, Senior Lien, Sustainability Bonds, 4.81%, 10/01/2114(a)		70		64,436
District of Columbia Water & Sewer Authority, Refunding RB, Series D, Subordinate Lien, 3.21%, 10/01/48		65		48,952
Metropolitan Washington Airports Authority Dulles Toll Road Revenue, RB, BAB, 7.46%, 10/01/46		75		93,886
				283,583
Florida — 0.0%
County of Miami-Dade Florida Aviation Revenue, Refunding RB, Series C, 4.28%, 10/01/41		125		114,007
County of Miami-Dade Florida Transit System, Refunding RB, Series B, 2.60%, 07/01/42		60		45,073
County of Miami-Dade Florida Water & Sewer System Revenue, Refunding RB, Series C, 3.49%, 10/01/42		70		58,382
State Board of Administration Finance Corp., RB(a)
Series A, 1.26%, 07/01/25		128		121,758
Series A, 2.15%, 07/01/30		165		140,446
				479,666
Georgia — 0.0%
City of Atlanta Georgia Water & Wastewater Revenue, Refunding RB, 2.26%, 11/01/35		80		64,650
Municipal Electric Authority of Georgia, Refunding RB, BAB, 6.66%, 04/01/57		119		136,990
				201,640
Idaho — 0.0%
Idaho Energy Resources Authority, RB, 2.86%, 09/01/46(a)		85		59,385
Illinois — 0.1%
Chicago O’Hare International Airport, ARB(a)
Series C, Senior Lien, 4.47%, 01/01/49		65		60,447
Series C, Senior Lien, 4.57%, 01/01/54		65		60,870
Chicago Transit Authority Sales & Transfer Tax Receipts Revenue, RB, Series A, 6.90%, 12/01/40		92		103,909
Illinois State Toll Highway Authority, RB, BAB, Series A, 6.18%, 01/01/34		87		92,916
Metropolitan Water Reclamation District of Greater Chicago, GO, BAB, 5.72%, 12/01/38		70		74,292
Sales Tax Securitization Corp., Refunding RB, Series B, 2nd Lien, 3.24%, 01/01/42		230		186,114

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 55

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Illinois (continued)
State of Illinois, GO, 5.10%, 06/01/33(a)	$	795	$	788,316
State of Illinois, GO, BAB, 7.35%, 07/01/35		69		73,955
				1,440,819
Indiana — 0.0%
Indiana Finance Authority, Refunding RB, 3.05%, 01/01/51		75		55,260
Kansas — 0.0%
Kansas Development Finance Authority, RB, Series K, (BAM), 2.77%, 05/01/51(a)		55		38,525
Louisiana — 0.0%
Louisiana Local Government Environmental Facilities & Community Development Authority, RB
Class A-1, 3.62%, 02/01/29		92		89,695
Class A-4, 4.48%, 08/01/39		110		105,224
Series A-3, 5.20%, 12/01/39(a)		125		126,451
State of Louisiana Gasoline & Fuels Tax Revenue, Refunding RB, Series A, 2.95%, 05/01/41(a)		95		73,295
				394,665
Massachusetts — 0.0%
Commonwealth of Massachusetts, GO, Series H, 2.90%, 09/01/49		80		57,576
Commonwealth of Massachusetts, GO, BAB, 5.46%, 12/01/39(a)		180		183,693
Massachusetts School Building Authority, RB, BAB, 5.72%, 08/15/39		115		122,008
Massachusetts School Building Authority, Refunding RB, Series B, Sustainability Bonds, 1.75%, 08/15/30		75		64,751
Massachusetts Water Resources Authority, Refunding RB, Series C, Sustainability Bonds, 2.82%, 08/01/41		65		51,383
				479,411
Michigan — 0.0%
Michigan Finance Authority, Refunding RB
3.08%, 12/01/34		60		52,253
3.38%, 12/01/40(a)		70		58,089
Michigan State Building Authority, Refunding RB, Series 2, 2.71%, 10/15/40		95		72,891
Michigan State University, RB, Series A, 4.17%, 08/15/2122		82		64,652
Michigan Strategic Fund, RB, 3.23%, 09/01/47		85		65,408
University of Michigan, RB
Series A, 3.50%, 04/01/52(a)		60		47,231
Series A, 4.45%, 04/01/2122		74		63,718
Series B, Sustainability Bonds, 3.50%, 04/01/52(a)		95		75,111
				499,353
Minnesota — 0.0%
University of Minnesota, RB, 4.05%, 04/01/52(a)		64		55,631
Missouri — 0.0%
Health & Educational Facilities Authority of the State of Missouri, RB, Series A, 3.65%, 08/15/57		90		70,000

Security	Par (000)		Value
Nevada — 0.0%
County of Clark Department of Aviation, ARB, BAB, Series C, 6.82%, 07/01/45	$	95	$	110,741
New Jersey — 0.0%
New Jersey Economic Development Authority, RB, Series A, (NPFGC), 7.43%, 02/15/29		249		265,950
New Jersey Transportation Trust Fund Authority, RB, BAB
Series B, 6.56%, 12/15/40		75		83,151
Series C, 5.75%, 12/15/28		70		70,448
New Jersey Turnpike Authority, RB, BAB, Series F, 7.41%, 01/01/40(a)		155		186,383
Rutgers The State University of New Jersey, RB, Series P, 3.92%, 05/01/2119		74		53,227
Rutgers The State University of New Jersey, Refunding RB, Series R, 3.27%, 05/01/43		80		64,965
				724,124
New York — 0.1%
City of New York, GO, Series F-1, 6.27%, 12/01/37		85		92,600
City of New York, GO, BAB, Series A-2, 5.21%, 10/01/31		90		90,122
Metropolitan Transportation Authority, RB, BAB
6.67%, 11/15/39		100		110,068
7.34%, 11/15/39(a)		100		122,358
6.81%, 11/15/40		80		89,037
New York City Municipal Water Finance Authority, Refunding RB, BAB(a)
5.72%, 06/15/42		85		88,359
6.01%, 06/15/42		110		118,039
5.44%, 06/15/43		75		75,246
New York City Transitional Finance Authority Future Tax Secured Revenue, RB, BAB, 5.57%, 11/01/38		125		128,156
New York State Urban Development Corp., RB, Series B, 3.90%, 03/15/33(a)		100		95,215
Port Authority of New York & New Jersey, ARB
3.18%, 07/15/60		70		48,243
Series 192, 4.81%, 10/15/65		80		76,475
Port Authority of New York & New Jersey, RB
Series 159, 6.04%, 12/01/29		75		80,155
Series 168, 4.93%, 10/01/51		220		216,178
Series 182, 5.31%, 08/01/46		75		74,422
Port Authority of New York & New Jersey, Refunding ARB, Series 239, 5.07%, 07/15/53(a)		50		50,759
				1,555,432
North Carolina — 0.0%
Charlotte-Mecklenburg Hospital Authority, RB, Series S, 3.20%, 01/15/51		75		53,186
Ohio — 0.0%
American Municipal Power, Inc., RB, Series B, 8.08%, 02/15/50(a)		100		133,799
JobsOhio Beverage System, Refunding RB
Series A, 2.83%, 01/01/38		100		82,144
Series B, 3.99%, 01/01/29		65		63,652

56  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Ohio (continued)
Ohio State University, RB, BAB, Series C, 4.91%, 06/01/40	$	145	$	143,520
Ohio Turnpike & Infrastructure Commission, Refunding RB, Series A, Junior Lien, 3.22%, 02/15/48(a)		95		72,733
				495,848
Oregon — 0.0%
Oregon School Boards Association, GO, Series B, (NPFGC), 5.55%, 06/30/28		75		75,762
Oregon State University, RB, (BAM), 3.42%, 03/01/60		62		45,857
State of Oregon Department of Transportation, RB, BAB, Series A, 5.83%, 11/15/34		70		72,975
State of Oregon, GO, 5.89%, 06/01/27		140		142,087
				336,681
Pennsylvania — 0.0%
City of Philadelphia Pennsylvania Water & Wastewater Revenue, Refunding RB, Series B, 2.93%, 07/01/45		70		52,650
Commonwealth Financing Authority, RB, Series A, 2.99%, 06/01/42(a)		225		171,651
Pennsylvania State University, Refunding RB, Series D, 2.79%, 09/01/43		100		75,260
University of Pittsburgh-of the Commonwealth System of Higher Education, RB, 3.56%, 09/15/2119		62		42,096
				341,657
South Carolina — 0.0%
South Carolina Public Service Authority, RB, BAB, Series C, 6.45%, 01/01/50		74		82,028
Tennessee — 0.0%
Metropolitan Government Nashville & Davidson County Health & Educational Facilities Board, RB, Series B, 4.05%, 07/01/26		62		60,699
Texas — 0.1%
City of San Antonio Texas Electric & Gas Systems Revenue, RB, 4.43%, 02/01/42		65		61,459
City of San Antonio Texas Electric & Gas Systems Revenue, RB, BAB, Junior Lien, 5.81%, 02/01/41(a)		95		100,086
Dallas Area Rapid Transit, Refunding RB, Series A, Senior Lien, 2.61%, 12/01/48		70		48,782
Dallas Fort Worth International Airport, Refunding RB 2.84%, 11/01/46		65		48,443
Series A, 2.99%, 11/01/38		75		62,833
Series C, 2.92%, 11/01/50(a)		160		116,056
Grand Parkway Transportation Corp., Refunding RB, Subordinate, 3.24%, 10/01/52		200		145,560
North Texas Tollway Authority, RB, BAB, Series B, 6.72%, 01/01/49		96		113,279
North Texas Tollway Authority, Refunding RB, 3.01%, 01/01/43		35		26,632
State of Texas, GO, BAB, 5.52%, 04/01/39(a)		110		113,756
Texas Natural Gas Securitization Finance Corp., RB(a)
Series 2023-1, 5.10%, 04/01/35		175		176,600
Series 2023-1, 5.17%, 04/01/41		170		172,734

Security	Par (000)		Value
Texas (continued)
Texas Private Activity Bond Surface Transportation Corp., RB, Series B, 3.92%, 12/31/49(a)	$	80	$	65,619
Texas Transportation Commission State Highway Fund, RB, Series B, 5.18%, 04/01/30		110		109,403
Texas Transportation Commission, Refunding GO, 2.47%, 10/01/44(a)		185		129,231
				1,490,473
Virginia — 0.0%
University of Virginia, RB, Series C, 4.18%, 09/01/2117		60		48,133
University of Virginia, Refunding RB 2.26%, 09/01/50		120		73,261
Series U, 2.58%, 11/01/51(a)		85		55,422
				176,816
Washington — 0.0%
State of Washington, GO, BAB, Series B, 5.14%, 08/01/40		75		73,745
Wisconsin — 0.0%
State of Wisconsin, RB, Series A, (AGM), 5.70%, 05/01/26		60		60,282
State of Wisconsin, Refunding RB, Series A, 3.95%, 05/01/36		110		102,384
				162,666
Total Municipal Bonds — 0.5% (Cost: $17,562,336)				15,060,804
Non-Agency Mortgage-Backed Securities
Commercial Mortgage-Backed Securities — 0.7%
Bank
Series 2019-BN18, Class A4, 3.58%, 05/15/62		341		306,500
Series 2019-BN21, Class A5, 2.85%, 10/17/52		936		826,517
Series 2020-BN27, Class A5, 2.14%, 04/15/63		925		762,714
BBCMS Mortgage Trust
Series 2017-C1, Class A4, 3.67%, 02/15/50		392		372,431
Series 2023-C21, Class A5, 6.00%, 09/15/56(b)		940		1,004,218
BBCMS Trust, Series 2021-C10, Class A5, 2.49%, 07/15/54		1,577		1,341,855
Benchmark Mortgage Trust
Series 2018-B5, Class A4, 4.21%, 07/15/51		511		491,359
Series 2019-B10, Class A4, 3.72%, 03/15/62		546		512,117
Series 2019-B11, Class A4, 3.28%, 05/15/52		681		622,603
Series 2019-B9, Class A5, 4.02%, 03/15/52		511		477,399
Series 2020-B19, Class B, 2.35%, 09/15/53		193		132,926
Series 2020-B21, Class A4, 1.70%, 12/17/53		612		504,771
Series 2020-B21, Class A5, 1.98%, 12/17/53		410		335,016
Series 2021-B29, Class A5, 2.39%, 09/15/54		567		473,214
Citigroup Commercial Mortgage Trust
Series 2016-GC37, Class A4, 3.31%, 04/10/49		597		567,658
Series 2016-P5, Class A4, 2.94%, 10/10/49		171		158,204
Series 2017-P7, Class A4, 3.71%, 04/14/50		384		360,462
Commercial Mortgage Trust, Series 2016-CR28, Class A4, 3.76%, 02/10/49		130		125,701
CSAIL Commercial Mortgage Trust
Series 2015-C3, Class A4, 3.72%, 08/15/48		171		166,019
Series 2016-C7, Class A5, 3.50%, 11/15/49		816		767,569
Series 2018-CX11, Class A5, 4.03%, 04/15/51(b)		681		648,824
DBJPM Mortgage Trust, Series 2016-C3, Class A5, 2.89%, 08/10/49		1,275		1,197,454

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 57

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
Commercial Mortgage-Backed Securities (continued)
GS Mortgage Securities Trust
Series 2015-GC30, Class A4, 3.38%, 05/10/50	$	104	$	101,011
Series 2015-GS1, Class A3, 3.73%, 11/10/48		392		377,720
Series 2018-GS10, Class A5, 4.16%, 07/10/51(b)		511		478,018
JPMBB Commercial Mortgage Securities Trust
Series 2014-C18, Class A5, 4.08%, 02/15/47		8		8,012
Series 2015-C31, Class A3, 3.80%, 08/15/48		321		310,100
JPMCC Commercial Mortgage Securities Trust,
Series 2017-JP7, Class A5, 3.45%, 09/15/50		597		552,044
JPMDB Commercial Mortgage Securities Trust,
Series 2017-C7, Class A5, 3.41%, 10/15/50		1,021		951,078
Morgan Stanley Bank of America Merrill Lynch Trust
Series 2015-C24, Class A4, 3.73%, 05/15/48		130		126,271
Series 2016-C28, Class A4, 3.54%, 01/15/49		1,151		1,104,378
Morgan Stanley Capital I Trust
Series 2015-UBS8, Class A4, 3.81%, 12/15/48		203		196,058
Series 2018-H3, Class A4, 3.91%, 07/15/51		511		486,958
Series 2019-H6, Class A4, 3.42%, 06/15/52		102		93,729
Series 2019-L3, Class AS, 3.49%, 11/15/52		132		116,626
Wells Fargo Commercial Mortgage Trust
Series 2015-SG1, Class A4, 3.79%, 09/15/48		825		802,752
Series 2019-C49, Class A5, 4.02%, 03/15/52		655		624,601
Series 2020-C56, Class A5, 2.45%, 06/15/53		530		454,721
Series 2020-C58, Class A4, 2.09%, 07/15/53		481		398,906
Total Non-Agency Mortgage-Backed Securities — 0.7% (Cost: $21,543,691)				19,338,514
Preferred Securities
Capital Trusts — 0.0%
Banks — 0.0%
Goldman Sachs Capital I, Class A5, 6.35%, 02/15/34		87		90,662
Electric Utilities — 0.0%
American Electric Power Co., Inc., 3.88%, 02/15/62(b)		71		63,804
Insurance — 0.0%
MetLife, Inc., 6.40%, 12/15/66(a)		104		106,492
Prudential Financial, Inc.(b)
5.38%, 05/15/45(a)		87		86,001
6.50%, 03/15/54		100		101,382
				293,875
Oil, Gas & Consumable Fuels — 0.0%
BP Capital Markets PLC, 6.45%(b)(f)		200		207,118
				655,459
Total Preferred Securities — 0.0% (Cost: $676,738)				655,459
U.S. Government Sponsored Agency Securities
Agency Obligations — 0.6%
Fannie Mae
2.63%, 09/06/24		1,021		1,009,432
0.50%, 06/17/25		3,395		3,219,650
6.25%, 05/15/29(a)		909		990,146
7.13%, 01/15/30		1,698		1,941,322
7.25%, 05/15/30(a)		3,487		4,034,521

Security	Par (000)		Value
Agency Obligations (continued)
Fannie Mae (continued)
0.88%, 08/05/30(a)	$	1,191	$	964,297
6.63%, 11/15/30		53		59,818
Federal Home Loan Banks
2.75%, 12/13/24		855		840,660
3.13%, 06/13/25		1,640		1,606,176
5.50%, 07/15/36		370		406,575
Federal Home Loan Mortgage Corp.
0.38%, 07/21/25(a)		82		77,358
6.75%, 03/15/31		477		546,254
6.25%, 07/15/32(a)		562		638,791
Tennessee Valley Authority
1.50%, 09/15/31		70		57,744
5.88%, 04/01/36		359		399,770
3.50%, 12/15/42		74		61,341
				16,853,855
Commercial Mortgage-Backed Securities — 0.8%
Fannie Mae-Aces
Series 2016-M5, Class A2, 2.47%, 04/25/26		912		868,094
Series 2017-M15, Class A2, 2.96%, 09/25/27(b)		610		576,821
Series 2018-M12, Class A2, 3.63%, 08/25/30(b)		511		483,412
Series 2019-M22, Class A2, 2.52%, 08/25/29		757		680,120
Series 2020-M46, Class A2, 1.32%, 05/25/30		932		773,999
Series 2021-M13, Class A2, 1.60%, 04/25/31(b)		724		589,308
Series 2021-M17, Class A2, 1.71%, 07/25/31(b)		511		416,327
Series 2021-M2S, Class A2, 1.81%, 10/25/31(b)		1,470		1,209,971
Freddie Mac Mortgage-Backed Securities
4.50%, 04/01/46		7		7,299
4.00%, 05/01/46		37		34,937
Freddie Mac Multifamily Structured Pass Through Certificates
Series K052, Class A2, 3.15%, 11/25/25		130		126,405
Series K063, Class A2, 3.43%, 01/25/27(b)		850		821,539
Series K066, Class A2, 3.12%, 06/25/27		597		570,170
Series K067, Class A1, 2.90%, 03/25/27		336		325,454
Series K076, Class A2, 3.90%, 04/25/28		341		331,606
Series K088, Class A2, 3.69%, 01/25/29		87		83,518
Series K100, Class A2, 2.67%, 09/25/29		1,698		1,540,916
Series K101, Class A2, 2.52%, 10/25/29		960		863,524
Series K110, Class A2, 1.48%, 04/25/30		450		377,657
Series K111, Class A2, 1.35%, 05/25/30		171		141,750
Series K123, Class A2, 1.62%, 12/25/30		1,698		1,407,796
Series K126, Class A2, 2.07%, 01/25/31		1,856		1,583,082
Series K-1521, Class A2, 2.18%, 08/25/36		813		610,747
Series K-154, Class A2, 4.35%, 01/25/33(b)		1,000		976,515
Series K-156, Class A2, 4.43%, 02/25/33(b)		1,500		1,472,185
Series K734, Class A2, 3.21%, 02/25/26		969		941,092
Series K-752, Class A2, 4.28%, 07/25/30		5,000		4,887,226
				22,701,470
Mortgage-Backed Securities — 25.7%
Fannie Mae Mortgage-Backed Securities
3.00%, 02/01/47		180		158,977
4.00%, 02/01/47 - 02/01/57		650		603,939
3.50%, 11/01/51		988		900,875
(12-mo. LIBOR US + 1.53%), 5.18%, 05/01/43(b)		7		6,726
(12-mo. LIBOR US + 1.54%), 5.42%, 06/01/43(b)		9		9,497
(12-mo. LIBOR US + 1.70%), 5.95%, 08/01/42(b)		2		2,494

58  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)			Value
Mortgage-Backed Securities(continued)
Fannie Mae Mortgage-Backed Securities (continued)
(12-mo. LIBOR US + 1.75%), 6.00%, 08/01/41(b)	$	1		$	1,295
(12-mo. LIBOR US + 1.83%), 6.08%, 11/01/40(b)		1			923
Freddie Mac Mortgage-Backed Securities
8.00%, 12/01/24		—	(g)		256
3.00%, 03/01/27 - 10/01/47		6,910			6,171,353
2.50%, 07/01/28 - 01/01/33		1,526			1,426,954
3.50%, 03/01/32 - 06/01/49		6,748			6,199,308
5.00%, 04/01/33 - 04/01/49		286			285,561
4.00%, 05/01/33 - 01/01/49		2,291			2,169,956
5.50%, 06/01/35 - 01/01/39		10			9,787
4.50%, 06/01/38 - 01/01/49		1,001			976,582
(12-mo. LIBOR US + 1.50%), 5.25%, 06/01/43(b)		—	(g)		333
(12-mo. LIBOR US + 1.71%), 5.98%, 08/01/41(b)		1			1,180
(12-mo. LIBOR US + 1.84%), 5.87%, 09/01/40(b)		2			1,682
Ginnie Mae Mortgage-Backed Securities
5.50%, 12/15/32 - 04/18/54(h)		9,734			9,734,363
6.00%, 03/15/35 - 04/18/54(h)		8,344			8,420,581
6.50%, 09/15/36 - 04/18/54(h)		6,707			6,821,508
4.50%, 07/15/39 - 04/18/54(h)		11,986			11,567,822
5.00%, 11/15/39 - 04/18/54(h)		12,177			11,987,834
4.00%, 03/15/41 - 04/18/54(h)		13,404			12,622,491
3.50%, 09/20/42 - 04/18/54(h)		20,489			18,835,343
3.00%, 01/20/43 - 04/18/54(h)		26,759			23,738,651
2.50%, 05/20/45 - 04/18/54(h)		38,186			32,473,771
2.00%, 07/20/50 - 04/18/54(h)		35,621			29,195,446
1.50%, 10/20/51		158			124,446
Uniform Mortgage-Backed Securities
4.50%, 05/01/24 - 04/11/54(h)		25,059			24,035,687
4.00%, 10/01/25 - 04/11/54(h)		36,970			34,766,023
3.50%, 02/01/26 - 04/11/54(h)		42,893			39,144,290
3.00%, 01/01/27 - 04/11/54(h)		68,248			60,122,351
2.50%, 09/01/28 - 04/11/54(h)		130,117			109,785,067
7.00%, 02/01/32		2			1,557
6.50%, 07/01/32 - 04/11/54(h)		16,960			17,393,670
5.00%, 11/01/33 - 04/11/54(h)		24,028			23,517,981
6.00%, 03/01/34 - 04/11/54(h)		18,612			18,870,009
2.00%, 12/01/35 - 04/11/54(h)		195,749			159,564,640
1.50%, 03/01/36 - 11/01/51(h)		28,230			22,829,179
5.50%, 04/01/36 - 04/11/54(h)		24,354			24,389,163
					718,869,551
Total U.S. Government Sponsored Agency Securities — 27.1% (Cost: $845,159,203)					758,424,876
U.S. Treasury Obligations
U.S. Treasury Bonds
6.88%, 08/15/25(a)		1,359			1,399,133
6.00%, 02/15/26		1,300			1,333,470
6.75%, 08/15/26		1,275			1,337,555
6.63%, 02/15/27		597			633,007
5.25%, 11/15/28 - 02/15/29		2,379			2,479,146
6.13%, 08/15/29		1,275			1,389,302
5.38%, 02/15/31		1,021			1,096,179
4.50%, 02/15/36 - 02/15/44(a)		5,335			5,452,917
4.75%, 02/15/37 - 11/15/53		17,250			18,202,457
5.00%, 05/15/37		1,885			2,048,833

Security	Par (000)		Value
U.S. Treasury Obligations (continued)
U.S. Treasury Bonds (continued)
4.38%, 02/15/38 - 08/15/43	$	7,040	$	7,025,845
3.50%, 02/15/39		1,139		1,046,412
4.25%, 05/15/39 - 11/15/40		3,278		3,256,319
4.63%, 02/15/40		2,755		2,854,438
1.13%, 05/15/40 - 08/15/40		11,545		7,172,485
3.88%, 08/15/40 - 05/15/43		9,857		9,117,036
1.38%, 11/15/40 - 08/15/50		10,111		5,959,691
1.88%, 02/15/41 - 11/15/51		18,715		11,709,523
2.25%, 05/15/41 - 02/15/52(a)		19,945		13,729,238
1.75%, 08/15/41		5,091		3,435,630
3.75%, 08/15/41 - 11/15/43		5,884		5,348,343
2.00%, 11/15/41 - 08/15/51(a)		20,459		13,155,503
3.13%, 11/15/41 - 05/15/48(a)		12,314		10,122,923
2.38%, 02/15/42 - 05/15/51		14,140		9,893,875
3.00%, 05/15/42 - 08/15/52(a)		34,477		27,071,677
3.25%, 05/15/42		4,100		3,485,160
2.75%, 08/15/42 - 11/15/47(a)		9,962		7,601,223
3.38%, 08/15/42 - 11/15/48		11,439		9,680,274
4.00%, 11/15/42 - 11/15/52		9,600		9,032,555
2.88%, 05/15/43 - 05/15/52		20,469		15,747,951
3.63%, 08/15/43 - 05/15/53		16,144		14,211,616
2.50%, 02/15/45 - 05/15/46(a)		9,048		6,562,418
1.25%, 05/15/50		4,072		2,082,605
1.63%, 11/15/50		7,231		4,084,103
4.13%, 08/15/53		8,400		8,073,187
U.S. Treasury Notes
0.38%, 04/30/25 - 09/30/27		30,551		27,855,888
3.88%, 04/30/25 - 08/15/33		54,000		53,049,726
2.13%, 05/15/25		5,642		5,467,671
0.25%, 05/31/25 - 10/31/25		31,504		29,630,326
2.75%, 06/30/25 - 08/15/32		30,994		28,986,271
3.00%, 07/15/25 - 10/31/25		15,993		15,592,094
2.88%, 07/31/25 - 05/15/32(a)		31,115		29,163,229
2.00%, 08/15/25 - 11/15/26		8,119		7,754,071
3.13%, 08/15/25 - 08/31/29		22,091		21,276,089
3.50%, 09/15/25 - 02/15/33		29,700		28,553,293
5.00%, 09/30/25		5,000		5,012,305
4.25%, 10/15/25 - 02/15/54(a)		49,000		48,813,789
2.25%, 11/15/25 - 11/15/27		13,169		12,354,290
4.50%, 11/15/25 - 11/15/33		33,400		33,664,226
4.00%, 12/15/25 - 02/15/34		63,300		62,512,445
2.63%, 01/31/26 - 07/31/29		11,795		11,028,620
1.63%, 02/15/26 - 05/15/31		43,145		39,240,020
0.50%, 02/28/26 - 10/31/27		28,807		25,836,937
4.63%, 03/15/26 - 09/30/30		29,000		29,175,859
0.75%, 03/31/26 - 01/31/28		26,321		24,129,153
3.75%, 04/15/26 - 12/31/30		27,000		26,397,109
3.63%, 05/15/26 - 03/31/30		21,000		20,461,756
4.13%, 06/15/26 - 11/15/32		52,200		51,795,234
0.88%, 06/30/26 - 11/15/30		12,897		11,084,864
1.88%, 06/30/26 - 02/15/32		25,836		23,018,223
0.63%, 07/31/26 - 08/15/30(a)		35,537		29,914,569
1.50%, 08/15/26 - 02/15/30		22,697		20,408,109
4.38%, 08/15/26 - 11/30/30		29,000		29,068,047
1.38%, 08/31/26 - 11/15/31		26,450		22,752,006
1.13%, 10/31/26 - 02/15/31		29,554		25,621,021
1.25%, 11/30/26 - 08/15/31		52,647		46,099,343
1.75%, 12/31/26 - 01/31/29		7,000		6,321,172
2.50%, 03/31/27		4,267		4,039,982
2.38%, 05/15/27 - 05/15/29		14,389		13,296,230
3.25%, 06/30/27 - 06/30/29		9,500		9,120,039

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 59

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio  (Percentages shown are based on Net Assets)

Security	Par (000)		Value
U.S. Treasury Obligations (continued)
U.S. Treasury Notes (continued)
1.00%, 07/31/28	$	6,786	$	5,912,833
4.88%, 10/31/28 - 10/31/30		8,500		8,752,871
3.38%, 05/15/33		10,000		9,367,969
Total U.S. Treasury Obligations — 41.1% (Cost: $1,253,112,347)				1,149,359,708
Total Long-Term Investments — 97.4% (Cost: $2,993,942,718)				2,728,436,201
	Shares
Short-Term Securities
Money Market Funds — 18.2%
BlackRock Cash Funds: Institutional, SL Agency Shares, 5.50%(i)(j)(k)		509,304,638		509,508,360
BlackRock Cash Funds: Treasury, SL Agency Shares, 5.29%(i)(j)		100,000		100,000
				509,608,360
	Par (000)
U.S. Treasury Obligations — 0.9%
U.S. Treasury Notes
1.50%, 02/15/25	$	5,091		4,933,845
5.03%, 02/28/25		5,091		4,986,048
1.75%, 03/15/25(a)		11,962		11,595,447
3.88%, 03/31/25		4,000		3,954,847
				25,470,187
Total Short-Term Securities — 19.1% (Cost: $535,438,657)				535,078,547
Total Investments Before TBA Sale Commitments — 116.5% (Cost: $3,529,381,375)				3,263,514,748

Security	Par (000)			Value
TBA Sale Commitments(h)
Mortgage-Backed Securities — (0.1)%
Ginnie Mae Mortgage-Backed Securities, 6.50%, 04/18/54	$	(250	)	$	(254,168	)
Uniform Mortgage-Backed Securities, 2.00%, 04/11/54		(3,025	)		(2,392,738	)
Total TBA Sale Commitments — (0.1)% (Proceeds: $(2,621,086))					(2,646,906	)
Total Investments, Net of TBA Sale Commitments — 116.4% (Cost: $3,526,760,289)					3,260,867,842
Liabilities in Excess of Other Assets — (16.4)%					(460,613,841	)
Net Assets — 100.0%				$	2,800,254,001

^(a)  All or a portion of this security is on loan.

^(b)  Variable rate security. Interest rate resets periodically. The rate shown is the effective interest rate as of period end. Security description also includes the reference rate and spread if published and available.

^(c)  When-issued security.

^(d)  Security exempt from registration pursuant to Rule 144A under the Securities Act of 1933, as amended. These securities may be resold in transactions exempt from registration to qualified institutional investors.

^(e)  Step-up bond that pays an initial coupon rate for the first period and then a higher coupon rate for the following periods. Rate as of period end.

^(f)  Perpetual security with no stated maturity date.

^(g)  Rounds to less than 1,000.

^(h)  Represents or includes a TBA transaction.

(i) Affiliate of the Master Portfolio.

(j) Annualized 7-day yield as of period end.

^(k)  All or a portion of this security was purchased with the cash collateral from loaned securities.

For purposes of this report, industry and sector sub-classifications may differ from those utilized by the Master Portfolio for compliance purposes.

Affiliates

Investments in issuers considered to be affiliate(s) of the Master Portfolio during the period ended March 31, 2024 for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

Affiliated Issuer	Value at 12/31/23		Purchases at Cost		Proceeds from Sales			Net Realized Gain (Loss)		Change in Unrealized Appreciation (Depreciation)			Value at 03/31/24		Shares Held at 03/31/24		Income			Capital Gain Distributions from Underlying Funds
BlackRock Cash Funds: Institutional, SL Agency Shares	$	588,823,007	$	—	$	(79,196,720	)(a)	$	45,007	$	(162,934	)	$	509,508,360		509,304,638	$	2,295,800	(b)	$	—
BlackRock Cash Funds: Treasury, SL Agency Shares		100,000		—		—			—		—			100,000		100,000		1,305			—
								$	45,007	$	(162,934	)	$	509,608,360			$	2,297,105		$	—

^(a)  Represents net amount purchased (sold).

^(b)  All or a portion represents securities lending income earned from the reinvestment of cash collateral from loaned securities, net of fees and collateral investment expenses, and other payments to and from borrowers of securities.

60  

Schedule of Investments (unaudited) (continued) March 31, 2024 U.S. Total Bond Index Master Portfolio

Fair Value Hierarchy as of Period End

Various inputs are used in determining the fair value of financial instruments. These inputs to valuation techniques are categorized into a fair value hierarchy consisting of three broad levels for financial reporting purposes as follows:

• Level 1 – Unadjusted price quotations in active markets/exchanges for identical assets or liabilities that the Master Portfolio has the ability to access;

• Level 2 – Other observable inputs (including, but not limited to, quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market–corroborated inputs); and

• Level 3 – Unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Valuation Committee’s assumptions used in determining the fair value of financial instruments).

The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3. The inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the fair value hierarchy classification is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Investments classified within Level 3 have significant unobservable inputs used by the Valuation Committee in determining the price for Fair Valued Investments. Level 3 investments include equity or debt issued by privately held companies or funds. There may not be a secondary market, and/or there are a limited number of investors. The categorization of a value determined for financial instruments is based on the pricing transparency of the financial instruments and is not necessarily an indication of the risks associated with investing in those securities. For information about the Master Portfolio’s policy regarding valuation of financial instruments, refer to its most recent financial statements.

The following table summarizes the Master Portfolio’s financial instruments categorized in the fair value hierarchy. The breakdown of the Master Portfolio’s financial instruments into major categories is disclosed in the Schedule of Investments above.

	Level 1		Level 2			Level 3		Total
Assets
Investments
Long-Term Investments
Asset-Backed Securities	$	—	$	12,031,195		$	—	$	12,031,195
Corporate Bonds		—		705,926,436			—		705,926,436
Foreign Agency Obligations		—		67,639,209			—		67,639,209
Municipal Bonds		—		15,060,804			—		15,060,804
Non-Agency Mortgage-Backed Securities		—		19,338,514			—		19,338,514
Preferred Securities
Capital Trusts		—		655,459			—		655,459
U.S. Government Sponsored Agency Securities		—		758,424,876			—		758,424,876
U.S. Treasury Obligations		—		1,149,359,708			—		1,149,359,708
Short-Term Securities
Money Market Funds		509,608,360		—			—		509,608,360
U.S. Treasury Obligations		—		25,470,187			—		25,470,187
Liabilities
Investments
TBA Sale Commitments		—		(2,646,906	)		—		(2,646,906	)
	$	509,608,360	$	2,751,259,482		$	—	$	3,260,867,842

Portfolio Abbreviation
AGM	Assured Guaranty Municipal Corp.
ARB	Airport Revenue Bonds
BAB	Build America Bond
BAM	Build America Mutual Assurance Co.
CMT	Constant Maturity Treasury
DAC	Designated Activity Company
GO	General Obligation Bonds
LIBOR	London Interbank Offered Rate
M/F	Multi-Family
NPFGC	National Public Finance Guarantee Corp.

Portfolio Abbreviation (continued)
RB	Revenue Bond
REIT	Real Estate Investment Trust
SAB	Special Assessment Bonds
SAP	Subject to Appropriations
SCA	Societe en Commandite par Actions
SOFR	Secured Overnight Financing Rate
TBA	To-Be-Announced

MASTER  PORTFOLIO  SCHEDULE  OF  INVESTMENTS 61