Nuveen New York Select Tax-Free Income Portfolio (NXN) NPORT-P Nuveen New York Select Tax-Free Income Portfolio (Dec 2021 report)

_NXN

Nuveen New York Select Tax-Free Income Portfolio

Portfolio of Investments    December 31, 2021

(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	LONG-TERM INVESTMENTS – 97.2%
	MUNICIPAL BONDS – 97.2%
	Consumer Staples  – 5.0%
$435	Erie County Tobacco Asset Securitization Corporation, New York, Tobacco Settlement Asset-Backed Bonds, Series 2005A, 5.000%, 6/01/38	1/22 at 100.00	B-	$435,570
	New York Counties Tobacco Trust VI, New York, Tobacco Settlement Pass-Through Bonds, Series 2016A-1:
345	5.625%, 6/01/35	No Opt. Call	BBB	375,391
1,530	5.750%, 6/01/43	No Opt. Call	BB+	2,028,964
2,310	Total Consumer Staples			2,839,925
	Education and Civic Organizations – 11.3%
270	Buffalo and Erie County Industrial Land Development Corporation, New York, Revenue Bonds, Enterprise Charter School Project, Series 2011A, 7.500%, 12/01/40	1/22 at 100.00	CCC	270,316
	Build New York City Resource Corporation, New York, Revenue Bonds, South Bronx Charter School for International Cultures and the Arts Project, Series 2013A:
75	5.000%, 4/15/33	4/23 at 100.00	BB+	77,819
110	5.000%, 4/15/43	4/23 at 100.00	BB+	113,539
100	Build NYC Resource Corporation, New York, Revenue Bonds, Family Life Academy Charter School, Series 2020C-1, 5.000%, 6/01/40, 144A	12/30 at 100.00	N/R	107,506
150	Dormitory Authority of the State of New York, General Revenue Bonds, Saint Johns University, Series 2013A, 5.000%, 7/01/44	7/23 at 100.00	A-	158,056
1,000	Dormitory Authority of the State of New York, Housing Revenue Bonds, Fashion Institute of Technology, Series 2007, 5.250%, 7/01/34  –  FGIC Insured	No Opt. Call	Baa2	1,206,440
20	Dormitory Authority of the State of New York, Lease Revenue Bonds, State University Dormitory Facilities, Series 2015A, 5.000%, 7/01/31	7/25 at 100.00	Aa3	23,125
605	Dormitory Authority of the State of New York, Revenue Bonds, Icahn School of Medicine at Mount Sinai, Refunding Series 2015A, 5.000%, 7/01/40	7/25 at 100.00	A-	689,246
290	Dormitory Authority of the State of New York, Revenue Bonds, New York University, Series 2015A, 5.000%, 7/01/35	7/25 at 100.00	Aa2	333,019
1,185	Dormitory Authority of the State of New York, Revenue Bonds, New York University, Series 2016A, 5.000%, 7/01/39	7/26 at 100.00	Aa2	1,392,067
70	Dormitory Authority of the State of New York, Revenue Bonds, Rochester Institute of Technology, Series 2019A, 5.000%, 7/01/49	7/29 at 100.00	A1	86,653
250	Dormitory Authority of the State of New York, Revenue Bonds, Vaughn College of Aeronautics & Technology, Series 2016A, 5.500%, 12/01/36, 144A	12/26 at 100.00	BB-	279,410
215	Glen Cove Local Economic Assistance Corporation, New York, Revenue Bonds, Garvies Point Public Improvement Project, Capital Appreciation Series 2016C, 0.000%, 1/01/55 (4)	1/34 at 100.00	N/R	231,321
110	Hempstead Town Local Development Corporation, New York, Revenue Bonds, Adelphi University Project, Series 2013, 5.000%, 9/01/38	9/23 at 100.00	A-	117,143

1

NXN	Nuveen New York Select Tax-Free Income Portfolio (continued)
	Portfolio of Investments December 31, 2021
	(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Education and Civic Organizations (continued)
$295	New York City Industrial Development Agency, New York, PILOT Payment in Lieu of Taxes Revenue Bonds, Queens Baseball Stadium Project, Refunding Series 2021A, 3.000%, 1/01/39  –  AGM Insured	1/31 at 100.00	AA	$316,529
180	New York City Industrial Development Agency, New York, PILOT Payment in Lieu of Taxes Revenue Bonds, Yankee Stadium Project, Series 2020A, 4.000%, 3/01/45	9/30 at 100.00	AA	204,611
350	New York City Trust for Cultural Resources, New York, Revenue Bonds, Whitney Museum of American Art, Refunding Series 2021, 5.000%, 7/01/31	No Opt. Call	AA	471,156
190	New York Liberty Development Corporation, New York, Liberty Revenue Bonds, Bank of America Tower at One Bryant Park Project, Second Priority Refunding Series 2019 Class 2, 2.625%, 9/15/69	3/29 at 100.00	A2	197,058
145	New York Liberty Development Corporation, New York, Liberty Revenue Bonds, Bank of America Tower at One Bryant Park Project, Second Priority Refunding Series 2019 Class 3, 2.800%, 9/15/69	3/29 at 100.00	Baa2	150,194
5,610	Total Education and Civic Organizations			6,425,208
	Financials – 1.1%
450	Liberty Development Corporation, New York, Goldman Sachs Headquarter Revenue Bonds, Series 2005, 5.250%, 10/01/35	No Opt. Call	A2	636,066
	Health Care – 4.7%
1,100	Dormitory Authority of the State of New York, Revenue Bonds, Montefiore Obligated Group, Series 2020A, 4.000%, 9/01/50	3/30 at 100.00	BBB-	1,250,843
1,000	Dormitory Authority of the State of New York, Revenue Bonds, NYU Langone Hospitals Obligated Group, Series 2020A, 4.000%, 7/01/53	7/30 at 100.00	A	1,161,450
200	Dutchess County Local Development Corporation, New York, Revenue Bonds, Health Quest Systems, Inc. Project, Series 2016B, 4.000%, 7/01/41	7/26 at 100.00	A-	222,592
2,300	Total Health Care			2,634,885
	Industrials – 3.6%
1,865	New York Liberty Development Corporation, New York, Liberty Revenue Bonds, 3 World Trade Center Project, Class 1 Series 2014, 5.000%, 11/15/44, 144A	11/24 at 100.00	N/R	2,044,506
	Long-Term Care – 0.2%
100	Dormitory Authority of the State of New York, Non-State Supported Debt, Ozanam Hall of Queens Nursing Home Revenue Bonds, Series 2006, 5.000%, 11/01/31	1/22 at 100.00	A2	100,802
25	Monroe County Industrial Development Corporation, New York, Revenue Bonds, Saint Ann's Community Project, Series 2019, 5.000%, 1/01/40	1/26 at 103.00	N/R	28,039
125	Total Long-Term Care			128,841
	Materials – 0.3%
160	Build New York City Resource Corporation, New York, Solid Waste Disposal Revenue Bonds, Pratt Paper NY, Inc. Project, Series 2014, 5.000%, 1/01/35 (AMT), 144A	1/25 at 100.00	N/R	177,264
	Tax Obligation/General – 8.3%
1,000	Nassau County, New York, General Obligation Bonds, General Improvement Bonds Series 2019B, 5.000%, 4/01/49  –  AGM Insured	4/30 at 100.00	AA	1,248,780
1,000	Nassau County, New York, General Obligation Bonds, General Improvement Series 2021A, 4.000%, 4/01/51  –  AGM Insured	4/31 at 100.00	AA	1,177,240

2

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Tax Obligation/General (continued)
$1,080	New York City, New York, General Obligation Bonds, Fiscal 2017 Series B-1, 5.000%, 12/01/41	12/26 at 100.00	AA	$1,287,166
835	New York City, New York, General Obligation Bonds, Fiscal 2020 SeriesD-1, 4.000%, 3/01/44	3/30 at 100.00	AA	973,067
3,915	Total Tax Obligation/General			4,686,253
	Tax Obligation/Limited – 20.9%
1,050	Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds, General Purpose Series 2012D, 5.000%, 2/15/37	2/22 at 100.00	AA+	1,055,785
1,000	Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds, General Purpose, Series 2019A. Bidding Group 1,2,3,4, 5.000%, 3/15/46	3/29 at 100.00	AA+	1,241,850
1,000	Dormitory Authority of the State of New York, State Sales Tax Revenue Bonds, Series 2015B. Group A,B&C, 5.000%, 3/15/35	9/25 at 100.00	AA+	1,155,680
1,000	Government of Guam, Business Privilege Tax Bonds, Refunding Series 2015D, 5.000%, 11/15/25	No Opt. Call	BB	1,158,130
800	Hudson Yards Infrastructure Corporation, New York, Revenue Bonds, Second Indenture Fiscal 2017 Series A, 5.000%, 2/15/38	2/27 at 100.00	Aa3	951,544
250	Hudson Yards Infrastructure Corporation, New York, Revenue Bonds, Second indenture Fiscal 2022 Series A, 4.000%, 2/15/44	2/32 at 100.00	Aa2	300,632
1,000	New York City Transitional Finance Authority, New York, Building Aid Revenue Bonds, Fiscal Series 2015S-2, 5.000%, 7/15/40	7/25 at 100.00	AA	1,147,550
1,000	New York City Transitional Finance Authority, New York, Future Tax Secured Bonds, Subordinate Fiscal 2013 Series I, 5.000%, 5/01/38	5/23 at 100.00	AAA	1,060,000
450	New York City Transitional Finance Authority, New York, Future Tax Secured Bonds, Subordinate Fiscal 2014 Series D-1, 5.000%, 2/01/35	2/24 at 100.00	AAA	491,733
1,120	New York State Urban Development Corporation, State Sales Tax Revenue Bonds, Series 2021A, 3.000%, 3/15/50	9/31 at 100.00	AA+	1,189,026
235	Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Restructured 2018A-1, 5.000%, 7/01/58	7/28 at 100.00	N/R	272,612
750	Triborough Bridge and Tunnel Authority, New York, Payroll Mobility Tax Bonds, Senior Lien Subseries 2021A-1, 5.000%, 5/15/51	5/31 at 100.00	AA+	965,685
845	Virgin Islands Public Finance Authority, Matching Fund Loan Notes Revenue Bonds, Series 2012A, 5.000%, 10/01/32  –  AGM Insured	10/22 at 100.00	AA	867,773
10,500	Total Tax Obligation/Limited			11,858,000
	Transportation – 21.3%
900	Metropolitan Transportation Authority, New York, Transportation Revenue Bonds, Series 2014D-1, 5.000%, 11/15/39	11/24 at 100.00	A3	994,374
190	New York Transportation Development Corporation, New York, Facility Revenue Bonds, Thruway Service Areas Project, Series 2021, 4.000%, 10/31/46 (AMT)	10/31 at 100.00	BBB-	219,359
980	New York Transportation Development Corporation, New York, Special Facilities Bonds, LaGuardia Airport Terminal B Redevelopment Project, Series 2016A, 5.000%, 7/01/46 (AMT)	7/24 at 100.00	BBB	1,076,255

3

NXN	Nuveen New York Select Tax-Free Income Portfolio (continued)
	Portfolio of Investments December 31, 2021
	(Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Transportation (continued)
	New York Transportation Development Corporation, New York, Special Facility Revenue Bonds, American Airlines, Inc. John F Kennedy International Airport Project, Refunding Series 2016:
$200	5.000%, 8/01/26 (AMT)	1/22 at 100.00	B	$201,860
830	5.000%, 8/01/31 (AMT)	1/22 at 100.00	B	837,719
30	New York Transportation Development Corporation, New York, Special Facility Revenue Bonds, American Airlines, Inc. John F Kennedy International Airport Project, Series 2020, 5.375%, 8/01/36 (AMT)	8/30 at 100.00	B	37,861
85	New York Transportation Development Corporation, New York, Special Facility Revenue Bonds, Terminal 4 John F Kennedy International Airport Project, Series 2020A, 5.000%, 12/01/37 (AMT)	12/30 at 100.00	Baa1	107,012
100	New York Transportation Development Corporation, New York, Special Facility Revenue Bonds, Terminal 4 John F Kennedy International Airport Project, Series 2020C, 5.000%, 12/01/37	12/30 at 100.00	Baa1	126,931
	New York Transportation Development Corporation, Special Facility Revenue Bonds, Delta Air Lines, Inc. - LaGuardia Airport Terminals C&D Redevelopment Project, Series 2018:
700	5.000%, 1/01/28 (AMT)	No Opt. Call	Baa3	856,688
300	5.000%, 1/01/31 (AMT)	1/28 at 100.00	Baa3	361,362
1,000	Port Authority of New York and New Jersey, Consolidated Revenue Bonds, One Hundred Ninety-Fourth Series 2015, 5.250%, 10/15/55	10/25 at 100.00	Aa3	1,163,200
1,500	Port Authority of New York and New Jersey, Consolidated Revenue Bonds, Two Hundred Eleventh Series 2018, 5.000%, 9/01/48	9/28 at 100.00	Aa3	1,837,545
1,475	Port Authority of New York and New Jersey, Consolidated Revenue Bonds, Two Hundred Twenty-Third Series 2021, 4.000%, 7/15/51 (AMT)	7/31 at 100.00	Aa3	1,709,068
1,000	Triborough Bridge and Tunnel Authority, New York, General Purpose Revenue Bonds, MTA Bridges & Tunnels, Refunding Series 2017B, 5.000%, 11/15/36	5/27 at 100.00	AA-	1,213,970
1,095	Triborough Bridge and Tunnel Authority, New York, General Purpose Revenue Bonds, MTA Bridges & Tunnels, Series 2017A, 5.000%, 11/15/47	5/27 at 100.00	AA-	1,317,832
10,385	Total Transportation			12,061,036
	U.S. Guaranteed – 2.0% (5)
25	Dormitory Authority of the State of New York, Lease Revenue Bonds, State University Dormitory Facilities, Series 2015A, 5.000%, 7/01/33 (Pre-refunded 7/01/25)	7/25 at 100.00	Aa3	28,906
1,005	New York City Trust for Cultural Resources, New York, Revenue Bonds, Wildlife Conservation Society, Series 2014A, 5.000%, 8/01/32 (Pre-refunded 8/01/23)	8/23 at 100.00	A+	1,080,264
1,030	Total U.S. Guaranteed			1,109,170
	Utilities – 18.5%
200	Buffalo Municipal Water Finance Authority, New York, Water System Revenue Bonds, Refunding Series 2015A, 5.000%, 7/01/29	7/25 at 100.00	A+	229,594
35	Guam Power Authority, Revenue Bonds, Series 2012A, 5.000%, 10/01/34	10/22 at 100.00	BBB	36,012
50	Long Island Power Authority, New York, Electric System General Revenue Bonds, Series 2014A, 5.000%, 9/01/44	9/24 at 100.00	A	55,288
180	Long Island Power Authority, New York, Electric System General Revenue Bonds, Series 2017, 5.000%, 9/01/47	9/27 at 100.00	A	218,713

4

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Utilities (continued)
$3,000	New York City Municipal Water Finance Authority, New York, Water and Sewer System Second General Resolution Revenue Bonds, Fiscal 2018 Series EE, 5.000%, 6/15/40	12/27 at 100.00	AA+	$3,681,510
1,000	New York State Environmental Facilities Corporation, State Clean Water and Drinking Water Revolving Funds Revenue Bonds, New York City Municipal Water Finance Authority Projects-Second Resolution Bonds,, 5.000%, 6/15/42	6/27 at 100.00	AAA	1,218,940
1,000	New York State Environmental Facilities Corporation, State Revolving Funds Revenue Bonds, 2010 Master Financing Program, Green Series 2020B, 3.000%, 10/15/50	10/30 at 100.00	AAA	1,089,610
150	Niagara Area Development Corporation, New York, Solid Waste Disposal Facility Revenue Refunding Bonds, Covanta Energy Project, Series 2018A, 4.750%, 11/01/42 (AMT), 144A	7/23 at 100.00	B1	155,761
	Puerto Rico Aqueduct and Sewerage Authority, Revenue Bonds, Senior Lien Series 2012A:
25	5.500%, 7/01/28	7/22 at 100.00	CCC	25,621
100	5.750%, 7/01/37	7/22 at 100.00	CCC	102,607
80	6.000%, 7/01/47	7/22 at 100.00	CCC	82,172
1,365	Utility Debt Securitization Authority, New York, Restructuring Bonds, Series 2013TE, 5.000%, 12/15/41	12/23 at 100.00	AAA	1,479,728
1,750	Utility Debt Securitization Authority, New York, Restructuring Bonds, Series 2016B, 5.000%, 12/15/35	6/26 at 100.00	AAA	2,074,170
8,935	Total Utilities			10,449,726
$47,585	Total Long-Term Investments (cost $50,843,202)			55,050,880
	Other Assets Less Liabilities – 2.8%			1,563,137
	Net Assets Applicable to Common Shares – 100%			$56,614,017

Part F of Form N-PORT was prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and in conformity with the applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) related to interim filings. Part F of Form N-PORT does not include all information and footnotes required by U.S. GAAP for complete financial statements. Certain footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted from this report pursuant to the rules of the SEC. For a full set of the Fund’s notes to financial statements, please refer to the Fund’s most recently filed annual or semi-annual report.

Fair Value Measurements

The Fund's investments in securities are recorded at their estimated fair value utilizing valuation methods approved by the Board of Directors/Trustees. Fair value is defined as the price that would be received upon selling an investment or transferring a liability in an orderly transaction to an independent buyer in the principal or most advantageous market for the investment. U.S. GAAP establishes the three-tier hierarchy which is used to maximize the use of observable market data and minimize the use of unobservable inputs and to establish classification of fair value measurements for disclosure purposes. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability. Observable inputs are based on market data obtained from sources independent of the reporting entity. Unobservable inputs reflect management’s assumptions about the assumptions market participants would use in pricing the asset or liability. Unobservable inputs are based on the best information available in the circumstances. The following is a summary of the three-tiered hierarchy of valuation input levels.

Level 1  –     Inputs are unadjusted and prices are determined using quoted prices in active markets for identical securities.

Level 2  –     Prices are determined using other significant observable inputs (including quoted prices for similar securities, interest rates, credit spreads, etc.).

Level 3  –     Prices are determined using significant unobservable inputs (including management’s assumptions in determining the fair value of investments).

5

NXN	Nuveen New York Select Tax-Free Income Portfolio (continued)
	Portfolio of Investments December 31, 2021
	(Unaudited)

The following table summarizes the market value of the Fund's investments as of the end of the reporting period, based on the inputs used to value them:

	Level 1	Level 2	Level 3	Total
Long-Term Investments:
Municipal Bonds	$ —	$55,050,880	$ —	$55,050,880

(1)	All percentages shown in the Portfolio of Investments are based on net assets applicable to common shares unless otherwise noted.
(2)	Optional Call Provisions: Dates (month and year) and prices of the earliest optional call or redemption. There may be other call provisions at varying prices at later dates. Certain mortgage-backed securities may be subject to periodic principal paydowns.
(3)	For financial reporting purposes, the ratings disclosed are the highest of Standard & Poor’s Group (“Standard & Poor’s”), Moody’s Investors Service, Inc. (“Moody’s”) or Fitch, Inc. (“Fitch”) rating. This treatment of split-rated securities may differ from that used for other purposes, such as for Fund investment policies. Ratings below BBB by Standard & Poor’s, Baa by Moody’s or BBB by Fitch are considered to be below investment grade. Holdings designated N/R are not rated by any of these national rating agencies.
(4)	Step-up coupon bond, a bond with a coupon that increases ("steps up"), usually at regular intervals, while the bond is outstanding. The rate shown is the coupon as of the end of the reporting period.
(5)	Backed by an escrow or trust containing sufficient U.S. Government or U.S. Government agency securities, which ensure the timely payment of principal and interest.
144A	Investment is exempt from registration under Rule 144A of the Securities Act of 1933, as amended. These investments may only be resold in transactions exempt from registration, which are normally those transactions with qualified institutional buyers.
AMT	Alternative Minimum Tax

6