Green Century Balanced Fund (GCBLX) NPORT-P Green Century MSCI International Index Fund (Oct 2023 report)

GREEN CENTURY BALANCED FUND PORTFOLIO OF INVESTMENTS

October 31, 2023

(unaudited)

COMMON STOCKS — 59.6%
	SHARES		VALUE
Software & Services — 7.2%
Adobe, Inc. (a)		6,586	$	3,504,147
Microsoft Corporation		52,010		17,585,101
Paycom Software, Inc.		7,024		1,720,669
ServiceNow, Inc. (a)		5,144		2,993,037
				25,802,954
Pharmaceuticals, Biotechnology & Life Sciences — 5.3%
AstraZeneca PLC ADR (b)		73,287		4,633,937
Gilead Sciences, Inc.		28,375		2,228,573
IQVIA Holdings, Inc. (a)		13,140		2,376,106
Merck & Company, Inc.		27,300		2,803,710
Novo Nordisk A/S ADR (b)		22,500		2,172,825
Roche Holding AG ADR		67,859		2,193,881
Thermo Fisher Scientific, Inc.		5,889		2,619,251
				19,028,283
Technology Hardware & Equipment — 5.3%
Apple, Inc.		89,484		15,281,183
Palo Alto Networks, Inc. (a)		14,273		3,468,624
				18,749,807
Semiconductors & Semiconductor Equipment — 4.4%
Analog Devices, Inc.		15,676		2,466,305
ASML Holding NV (b)		4,954		2,966,505
NVIDIA Corporation		16,127		6,576,590
NXP Semiconductors NV (b)		12,266		2,115,026
Wolfspeed, Inc. (a)		43,189		1,461,516
				15,585,942
Capital Goods — 4.2%
Deere & Company		5,649		2,063,919
Eaton Corporation PLC		15,151		3,150,044
Illinois Tool Works, Inc.		7,095		1,590,131
Rockwell Automation, Inc.		4,908		1,289,872
Trane Technologies PLC		15,557		2,960,653
Westinghouse Air Brake Technologies Corporation		21,955		2,327,669
Xylem, Inc.		15,837		1,481,393
				14,863,681

	SHARES		VALUE
Insurance — 3.7%
Aflac, Inc.		28,265	$	2,207,779
Elevance Health, Inc.		14,251		6,414,233
Progressive Corporation (The)		15,121		2,390,479
Travelers Companies, Inc. (The)		13,908		2,328,755
				13,341,246
Consumer Discretionary Distribution & Retail — 3.6%
Home Depot, Inc. (The)		11,443		3,257,708
Target Corporation		21,254		2,354,731
TJX Companies, Inc. (The)		49,595		4,367,831
Tractor Supply Company		14,712		2,832,943
				12,813,213
Financial Services — 3.3%
LPL Financial Holdings, Inc.		19,667		4,415,635
Mastercard, Inc., Class A		19,728		7,424,632
				11,840,267
Media & Entertainment — 2.7%
Alphabet, Inc., Class A (a)		77,564		9,624,141
Equity Real Estate Investment Trusts (REITs) — 2.6%
American Tower Corporation REIT		19,574		3,487,891
AvalonBay Communities, Inc. REIT		8,963		1,485,528
Equinix, Inc. REIT		2,596		1,894,145
Jones Lang LaSalle, Inc. (a)		9,787		1,251,953
Prologis, Inc. REIT		10,930		1,101,198
				9,220,715
Consumer Staples Distribution & Retail — 2.2%
Costco Wholesale Corporation		10,528		5,816,088
Sysco Corporation		30,845		2,050,884
				7,866,972
Healthcare Equipment & Services — 2.0%
Alcon, Inc. (b)		35,019		2,497,555
Stryker Corporation		10,759		2,907,297

1

GREEN CENTURY BALANCED FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	continued

	SHARES		VALUE
Healthcare Equipment & Services — (continued)
West Pharmaceutical Services, Inc.		5,832	$	1,856,267
				7,261,119
Consumer Durables & Apparel — 2.0%
Levi Strauss & Company, Class A		129,446		1,769,527
Lululemon Athletica, Inc. (a)		7,754		3,051,044
NIKE, Inc., Class B		21,523		2,211,918
				7,032,489
Banks — 1.9%
East West Bancorp, Inc.		63,372		3,398,007
PNC Financial Services Group, Inc. (The)		28,515		3,264,112
				6,662,119
Renewable Energy & Energy Efficiency — 1.8%
First Solar, Inc. (a)		15,473		2,204,129
Ormat Technologies, Inc.		35,154		2,163,377
SolarEdge Technologies, Inc. (a)		13,704		1,040,819
Sunrun, Inc. (a)		109,285		1,054,600
				6,462,925
Household & Personal Products — 1.6%
Procter & Gamble Company (The)		17,374		2,606,621
Unilever PLC ADR (b)		61,768		2,924,715
				5,531,336
Transportation — 1.2%
J.B. Hunt Transport Services, Inc.		13,020		2,237,748
United Parcel Service, Inc., Class B		14,085		1,989,506
				4,227,254
Materials — 1.0%
Ball Corporation		58,571		2,820,194

	SHARES		VALUE
Materials — (continued)
Ingevity Corporation (a)		19,719	$	794,281
				3,614,475
Consumer Services — 0.9%
Bright Horizons Family Solutions, Inc. (a)		15,357		1,137,339
Starbucks Corporation		22,323		2,059,074
				3,196,413
Commercial & Professional Services — 0.7%
Verisk Analytics, Inc.		10,870		2,471,403
Utilities — 0.6%
American Water Works Company, Inc.		19,443		2,287,469
Food & Beverage — 0.6%
McCormick & Company, Inc.		33,631		2,149,021
Telecommunication Services — 0.5%
Verizon Communications, Inc.		49,228		1,729,380
Automobiles & Components — 0.3%
Aptiv PLC (a)		10,287		897,026
Total Common Stocks
(Cost $128,140,306)				212,259,650

	PRINCIPAL AMOUNT
BONDS & NOTES — 39.6%
Green and Sustainability Bonds — 28.1%
Alphabet, Inc. 1.10%, due 8/15/30 (c)	$	2,500,000	1,919,460
Apple, Inc. 3.00%, due 6/20/27 (c)		5,000,000	4,642,390
Asian Development Bank 2.125%, due 3/19/25 (b)		1,000,000	957,032

2

GREEN CENTURY BALANCED FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	continued

	PRINCIPAL AMOUNT		VALUE
Green and Sustainability Bonds — (continued)
Asian Development Bank 3.125%, due 9/26/28 (b)	$	4,000,000	$	3,686,432
AvalonBay Communities, Inc. 2.05%, due 1/15/32 (c)		6,000,000		4,542,210
Bank of America Corporation 2.456% (3-Month Term SOFR+113.161 basis points), due 10/22/25 (c)		4,000,000		3,844,676
Boston Properties LP 4.50%, due 12/1/28 (c)		5,000,000		4,402,510
Bridge Housing Corporation 3.25%, due 7/15/30 (c)		4,500,000		3,768,147
Century Housing Corporation 0.60%, due 2/15/24		2,500,000		2,464,820
City of San Francisco CA Public Utilities Commission Water Revenue 2.806%, due 11/1/23		2,000,000		2,000,000
European Investment Bank 2.50%, due 10/15/24 (b)		2,000,000		1,943,488
European Investment Bank 2.125%, due 4/13/26 (b)		500,000		466,845
European Investment Bank 3.75%, due 2/14/33 (b)		5,000,000		4,545,180
International Bank for Reconstruction & Development 2.125%, due 3/3/25 (b)		2,000,000		1,916,044
International Bank for Reconstruction & Development 4.00%, due 7/25/30 (b)		4,000,000		3,766,444
International Finance Corporation 2.125%, due 4/7/26 (b)		500,000		466,446
Johnson Controls International plc / Tyco Fire & Security Finance SCA 1.75%, due 9/15/30 (b)(c)		5,000,000		3,810,195
Mastercard, Inc. 1.90%, due 3/15/31 (c)		5,000,000		3,891,575

	PRINCIPAL AMOUNT		VALUE
Green and Sustainability Bonds — (continued)
Nederlandse Waterschapsbank NV 2.375%, due 3/24/26 (b)(d)	$	3,500,000	$	3,279,398
New Jersey Infrastructure Bank 3.00%, due 9/1/31		2,500,000		2,095,838
NXP BV / NXP Funding LLC / NXP USA, Inc. 5.00%, due 1/15/33 (b)(c)		4,500,000		4,021,303
PNC Financial Services Group, Inc. (The) 2.20%, due 11/1/24 (c)		5,000,000		4,808,075
Prologis LP 1.25%, due 10/15/30 (c)		4,500,000		3,299,841
Regency Centers LP 3.75%, due 6/15/24 (c)		2,000,000		1,965,452
Salesforce, Inc. 1.50%, due 7/15/28 (c)		6,000,000		5,056,878
San Francisco Bay Area Rapid Transit District 2.622%, due 8/1/29		2,000,000		1,712,426
Starbucks Corporation 2.45%, due 6/15/26 (c)		4,500,000		4,150,381
United States International Development Finance Corporation 3.43%, due 6/1/33		188,332		170,765
United States International Development Finance Corporation 3.05%, due 6/15/35		1,191,300		1,028,576
United States International Development Finance Corporation 2.58%, due 7/15/38		2,768,500		2,226,137
Verizon Communications, Inc. 3.875%, due 2/8/29 (c)		5,000,000		4,543,620
Visa, Inc. 0.75%, due 8/15/27 (c)		6,000,000		5,096,814
Xylem, Inc. 2.25%, due 1/30/31 (c)		4,500,000		3,486,564
				99,975,962

3

GREEN CENTURY BALANCED FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	continued

	PRINCIPAL AMOUNT		VALUE
U.S. Government Agencies — 4.7%
Federal Farm Credit Banks Funding Corporation 2.26%, due 11/13/24	$	500,000	$	483,305
Federal Farm Credit Banks Funding Corporation 1.82%, due 12/18/25		3,000,000		2,795,472
Federal Farm Credit Banks Funding Corporation 2.80%, due 11/12/27		3,000,000		2,758,653
Federal Farm Credit Banks Funding Corporation 3.875%, due 8/15/28		4,000,000		3,800,804
Federal Farm Credit Banks Funding Corporation 1.23%, due 7/29/30 (c)		5,000,000		3,848,055
Federal Home Loan Banks 0.75%, due 12/14/23 (c)		3,000,000		2,983,209
				16,669,498
Community Development Financial Institutions — 2.5%
Capital Impact Partners 1.00%, due 9/15/25 (c)		1,500,000		1,301,840
Enterprise Community Loan Fund, Inc. 4.152%, due 11/1/28 (c)		3,000,000		2,707,440
Local Initiatives Support Corporation 1.00%, due 11/15/25		2,000,000		1,771,776
Local Initiatives Support Corporation 3.782%, due 3/1/27 (c)		2,000,000		1,878,764
Reinvestment Fund, Inc. (The) 3.78%, due 2/15/26		1,400,000		1,296,078
				8,955,898
Municipal — 1.0%
Commonwealth of Massachusetts 4.11%, due 7/15/31 (c)		3,766,920		3,619,637

	PRINCIPAL AMOUNT		VALUE
Capital Goods — 0.9%
Trane Technologies Financing Ltd. 3.80%, due 3/21/29 (c)	$	3,500,000	$	3,197,625
Equity Real Estate Investment Trusts (REITs) — 0.9%
National Community Renaissance of California 3.27%, due 12/1/32 (c)		4,000,000		3,097,592
Software & Services — 0.6%
Adobe, Inc. 3.25%, due 2/1/25 (c)		2,000,000		1,948,016
Media & Entertainment — 0.5%
Alphabet, Inc. 1.998%, due 8/15/26 (c)		2,000,000		1,838,898
Insurance — 0.3%
Travelers Property Casualty Corporation 7.75%, due 4/15/26		1,000,000		1,046,582
Healthy Living — 0.1%
Whole Foods Market, Inc. 5.20%, due 12/3/25 (c)(d)		500,000		493,047
Total Bonds & Notes
(Cost $155,904,044)				140,842,755

4

GREEN CENTURY BALANCED FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	concluded

	VALUE
SHORT-TERM INVESTMENTS — 0.6%
UMB Money Market Fiduciary Account, 0.01% (e) (Cost $2,211,158)	$	2,211,158
Total Short-term Investments
(Cost $2,211,158)		2,211,158
TOTAL INVESTMENTS  — 99.8%
(Cost $286,255,508)		355,313,563
Other Assets Less Liabilities — 0.2%		640,877
NET ASSETS — 100.0%	$	355,954,440

ADR – American Depository Receipt

PLC – Public Limited Company

REIT – Real Estate Investment Trusts

LP – Limited Partnership

LLC – Limited Liability Company

(a) Non-income producing security.

(b) Securities whose value are determined or significantly influenced by trading in markets other than the United States or Canada.

(c) Callable

(d) Security exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration to qualified institutional buyers. The total value of these securities is $3,772,445.

(e) The rate quoted is the annualized seven-day yield of the fund at the period end.

5

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS

October 31, 2023

(unaudited)

COMMON STOCKS — 99.7%
	SHARES		VALUE
Software & Services — 24.2%
Accenture PLC, Class A (a)		17,067	$	5,070,435
Adobe, Inc. (b)		12,336		6,563,492
ANSYS, Inc. (b)		2,353		654,746
Autodesk, Inc. (b)		5,789		1,144,080
Automatic Data Processing, Inc.		11,168		2,437,081
Cadence Design Systems, Inc. (b)		7,389		1,772,252
Cognizant Technology Solutions Corporation, Class A		13,653		880,209
Fidelity National Information Services, Inc.		16,042		787,823
Fortinet, Inc. (b)		18,085		1,033,919
Gen Digital, Inc.		15,691		261,412
International Business Machines Corporation		24,557		3,551,924
Intuit, Inc.		7,567		3,745,287
Microsoft Corporation		191,117		64,618,569
Okta, Inc., Class A (b)		4,237		285,616
Oracle Corporation		44,059		4,555,701
Paycom Software, Inc.		1,419		347,612
PayPal Holdings, Inc. (b)		28,716		1,487,489
PTC, Inc. (b)		3,060		429,685
Salesforce, Inc. (b)		26,355		5,292,875
ServiceNow, Inc. (b)		5,503		3,201,920
Splunk, Inc. (b)		4,223		621,457
Teradata Corporation (b)		2,757		117,779
Visa, Inc., Class A		43,763		10,288,681
VMware, Inc., Class A (b)		6,443		938,423
Western Union Company (The)		10,221		115,395
Workday, Inc., Class A (b)		5,578		1,180,918
ZoomInfo Technologies, Inc. (b)		7,133		92,444
				121,477,224
Semiconductors & Semiconductor Equipment — 9.9%
Advanced Micro Devices, Inc. (b)		43,565		4,291,153
Analog Devices, Inc.		13,536		2,129,619
Applied Materials, Inc.		22,684		3,002,227
Intel Corporation		112,821		4,117,967
Lam Research Corporation		3,626		2,132,886
Microchip Technology, Inc.		14,781		1,053,737
NVIDIA Corporation		66,819		27,248,788
NXP Semiconductors NV (a)		7,034		1,212,873

	SHARES		VALUE
Semiconductors & Semiconductor Equipment — (continued)
ON Semiconductor Corporation (b)		11,697	$	732,700
Skyworks Solutions, Inc.		4,326		375,237
Texas Instruments, Inc.		24,549		3,486,203
				49,783,390
Media & Entertainment — 8.8%
Alphabet, Inc., Class A (b)		160,706		19,940,400
Alphabet, Inc., Class C (b)		143,005		17,918,526
Electronic Arts, Inc.		7,024		869,501
John Wiley & Sons, Inc., Class A		1,277		38,655
Liberty Global PLC, Series C (a)(b)		6,709		113,785
New York Times Company (The), Class A		4,076		164,303
Omnicom Group, Inc.		5,413		405,488
Scholastic Corporation		769		28,376
Walt Disney Company (The) (b)		49,379		4,028,833
Warner Bros Discovery, Inc. (b)		62,534		621,588
				44,129,455
Pharmaceuticals, Biotechnology & Life Sciences — 7.2%
AbbVie, Inc.		47,750		6,741,345
Agilent Technologies, Inc.		7,999		826,857
Amgen, Inc.		14,460		3,697,422
Biogen, Inc. (b)		3,923		931,869
BioMarin Pharmaceutical, Inc. (b)		5,114		416,535
Bio-Techne Corporation		4,293		234,527
Bristol-Myers Squibb Company		56,809		2,927,368
Danaher Corporation		18,960		3,640,699
Gilead Sciences, Inc.		33,749		2,650,646
Illumina, Inc. (b)		4,233		463,175
IQVIA Holdings, Inc. (b)		5,026		908,852
Jazz Pharmaceuticals PLC (a)(b)		1,733		220,126
Merck & Company, Inc.		68,675		7,052,923
Mettler-Toledo International, Inc. (b)		597		588,164
Vertex Pharmaceuticals, Inc. (b)		6,957		2,519,199
Waters Corporation (b)		1,606		383,079

6

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	continued

	SHARES		VALUE
Pharmaceuticals, Biotechnology & Life Sciences — (continued)
Zoetis, Inc.		12,529	$	1,967,053
				36,169,839
Financial Services — 6.3%
Ally Financial, Inc.		7,260		175,619
American Express Company		17,059		2,491,126
Ameriprise Financial, Inc.		2,805		882,369
Bank of New York Mellon Corporation (The)		21,087		896,197
BlackRock, Inc.		4,048		2,478,509
Charles Schwab Corporation (The)		40,773		2,121,827
CME Group, Inc.		9,709		2,072,483
Equitable Holdings, Inc.		9,719		258,234
FactSet Research Systems, Inc.		1,042		450,029
Franklin Resources, Inc.		8,159		185,944
Intercontinental Exchange, Inc.		15,440		1,658,874
Invesco Ltd.		9,349		121,257
Mastercard, Inc., Class A		22,907		8,621,049
Moody’s Corporation		4,476		1,378,608
Morgan Stanley		33,948		2,404,197
Nasdaq, Inc.		9,237		458,155
Northern Trust Corporation		5,679		374,303
S&P Global, Inc.		8,860		3,094,887
State Street Corporation		9,067		586,000
Synchrony Financial		11,683		327,708
T. Rowe Price Group, Inc.		6,069		549,245
Voya Financial, Inc.		2,675		178,610
				31,765,230
Capital Goods — 6.1%
3M Company		14,960		1,360,612
A.O. Smith Corporation		3,346		233,417
AGCO Corporation		1,737		199,164
Air Lease Corporation, Class A		2,826		97,864
Allegion PLC (a)		2,393		235,375
Applied Industrial Technologies, Inc.		1,062		163,028
Builders FirstSource, Inc. (b)		3,490		378,735
Carrier Global Corporation		22,624		1,078,260
Caterpillar, Inc.		13,938		3,150,685

	SHARES		VALUE
Capital Goods — (continued)
Cummins, Inc.		3,832	$	828,862
Deere & Company		7,523		2,748,603
Dover Corporation		3,807		494,720
Eaton Corporation PLC		10,770		2,239,191
EMCOR Group, Inc.		1,293		267,198
Fastenal Company		15,539		906,545
Ferguson PLC (a)		5,505		826,851
Flowserve Corporation		3,593		131,935
Fortive Corporation		9,546		623,163
Fortune Brands Innovations, Inc.		3,360		187,488
Graco, Inc.		4,571		339,854
Granite Construction, Inc.		1,169		47,321
IDEX Corporation		2,056		393,539
Illinois Tool Works, Inc.		8,201		1,838,008
Lennox International, Inc.		870		322,370
Lincoln Electric Holdings, Inc.		1,549		270,765
Masco Corporation		6,139		319,780
Middleby Corporation (The) (b)		1,459		164,677
Owens Corning		2,454		278,210
PACCAR, Inc.		14,142		1,167,139
Parker-Hannifin Corporation		3,472		1,280,856
Pentair PLC (a)		4,421		256,949
Quanta Services, Inc.		3,898		651,434
Rockwell Automation, Inc.		3,109		817,076
Roper Technologies, Inc.		2,889		1,411,479
Sensata Technologies Holding NV		4,137		131,888
Snap-on, Inc.		1,426		367,822
Stanley Black & Decker, Inc.		4,175		355,084
Tennant Company		470		34,883
Timken Company (The)		1,770		122,342
Trane Technologies PLC		6,149		1,170,216
United Rentals, Inc.		1,858		754,850
W.W. Grainger, Inc.		1,220		890,393
Westinghouse Air Brake Technologies Corporation		4,899		519,392
Xylem, Inc.		6,509		608,852
				30,666,875
Food & Beverage — 4.3%
Archer-Daniels-Midland Company		14,760		1,056,373
Bunge Global SA		4,101		434,624

7

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	continued

	SHARES		VALUE
Food & Beverage — (continued)
Campbell Soup Company		5,257	$	212,435
Coca-Cola Company (The)		111,180		6,280,558
Conagra Brands, Inc.		12,838		351,248
Darling Ingredients, Inc. (b)		4,303		190,580
General Mills, Inc.		15,846		1,033,793
Hormel Foods Corporation		8,190		266,585
Ingredion, Inc.		1,756		164,327
JM Smucker Company (The)		2,780		316,475
Kellanova		7,428		374,891
Keurig Dr Pepper, Inc.		24,677		748,453
Kraft Heinz Company (The)		23,258		731,697
Lamb Weston Holdings, Inc.		3,971		356,596
McCormick & Company, Inc.		6,716		429,152
Mondelez International, Inc., Class A		36,772		2,434,674
PepsiCo, Inc.		37,252		6,082,507
				21,464,968
Healthcare Equipment & Services — 3.6%
Align Technology, Inc. (b)		1,976		364,750
Becton, Dickinson & Company		7,665		1,937,559
Cardinal Health, Inc.		6,843		622,713
Cencora, Inc.		4,646		860,207
Centene Corporation (b)		14,790		1,020,214
Cigna Group (The)		7,989		2,470,199
Cooper Cos., Inc. (The)		1,346		419,615
DaVita, Inc. (b)		1,463		112,987
DENTSPLY SIRONA, Inc.		5,694		173,154
DexCom, Inc. (b)		10,497		932,448
Edwards Lifesciences Corporation (b)		16,453		1,048,385
HCA Healthcare, Inc.		5,597		1,265,706
Henry Schein, Inc. (b)		3,561		231,394
Hologic, Inc. (b)		6,696		443,074
Humana, Inc.		3,387		1,773,738
IDEXX Laboratories, Inc. (b)		2,247		897,609
Insulet Corporation (b)		1,894		251,088
Laboratory Corporation of America Holdings		2,401		479,552
Patterson Companies, Inc.		2,363		71,977
Pediatrix Medical Group, Inc. (b)		2,034		23,310
Quest Diagnostics, Inc.		3,036		394,984
ResMed, Inc.		3,939		556,266

	SHARES		VALUE
Healthcare Equipment & Services — (continued)
Select Medical Holdings Corporation		2,929	$	66,576
STERIS PLC		2,669		560,437
Teladoc Health, Inc. (b)		4,537		75,042
West Pharmaceutical Services, Inc.		2,017		641,991
Zimmer Biomet Holdings, Inc.		5,647		589,603
				18,284,578
Consumer Discretionary Distribution & Retail — 3.6%
AutoNation, Inc. (b)		807		104,975
Best Buy Company, Inc.		5,354		357,754
Booking Holdings, Inc. (b)		998		2,783,981
Buckle, Inc. (The)		812		27,421
CarMax, Inc. (b)		4,312		263,420
Foot Locker, Inc.		2,249		47,207
GameStop Corporation, Class A (b)		7,479		102,986
Gap, Inc. (The)		6,046		77,389
Home Depot, Inc. (The)		27,212		7,746,984
Kohl’s Corporation		3,019		68,078
LKQ Corporation		7,289		320,133
Lowe’s Companies, Inc.		15,828		3,016,342
Nordstrom, Inc.		2,838		39,675
ODP Corporation (The) (b)		934		41,955
Pool Corporation		1,055		333,137
Signet Jewelers Ltd.		1,184		82,679
Target Corporation		12,498		1,384,653
Tractor Supply Company		2,942		566,512
Ulta Beauty, Inc. (b)		1,335		509,049
				17,874,330
Renewable Energy & Energy Efficiency — 3.4%
Acuity Brands, Inc.		847		137,188
First Solar, Inc. (b)		2,751		391,880
Itron, Inc. (b)		1,270		72,746
Johnson Controls International, PLC		18,584		910,988
Ormat Technologies, Inc.		1,435		88,310
Tesla, Inc. (b)		77,158		15,496,413
				17,097,525

8

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	continued

	SHARES		VALUE
Insurance — 3.3%
Allstate Corporation (The)		7,078	$	906,904
Arthur J. Gallagher & Company		5,801		1,366,077
Chubb Ltd. (a)		11,193		2,402,242
Elevance Health, Inc.		6,403		2,881,926
Hartford Financial Services Group, Inc. (The)		8,411		617,788
Lincoln National Corporation		4,497		97,900
Loews Corporation		5,240		335,412
Marsh & McLennan Companies, Inc.		13,412		2,543,586
Principal Financial Group, Inc.		6,613		447,568
Progressive Corporation (The)		15,826		2,501,932
Prudential Financial, Inc.		9,879		903,336
Travelers Companies, Inc. (The)		6,251		1,046,667
Willis Towers Watson PLC (a)		2,858		674,174
				16,725,512
Equity Real Estate Investment Trusts (REITs) — 2.9%
American Tower Corporation REIT		12,581		2,241,808
Anywhere Real Estate, Inc. (b)		2,748		12,833
AvalonBay Communities, Inc. REIT		3,866		640,751
Boston Properties, Inc. REIT		4,061		217,548
CBRE Group, Inc., Class A (b)		8,336		578,018
COPT Defense Properties REIT		3,017		68,788
Digital Realty Trust, Inc. REIT		7,848		975,977
Equinix, Inc. REIT		2,535		1,849,638
Equity Residential REIT		9,782		541,238
Federal Realty Investment Trust REIT		1,948		177,638
Healthpeak Properties, Inc. REIT		14,844		230,824
Host Hotels & Resorts, Inc. REIT		19,367		299,801
Iron Mountain, Inc. REIT		7,939		468,957
Jones Lang LaSalle, Inc. (b)		1,273		162,842
Macerich Company (The) REIT		5,877		57,125
PotlatchDeltic Corporation REIT		2,160		92,556
Prologis, Inc. REIT		24,961		2,514,821
SBA Communications Corporation, Class A REIT		2,924		610,034
Simon Property Group, Inc. REIT		8,846		972,087
UDR, Inc. REIT		8,521		271,053

	SHARES		VALUE
Equity Real Estate Investment Trusts (REITs) — (continued)
Ventas, Inc. REIT		10,894	$	462,559
Welltower, Inc. REIT		13,448		1,124,387
				14,571,283
Household & Personal Products — 2.7%
Clorox Company (The)		3,346		393,824
Colgate-Palmolive Company		21,275		1,598,178
Estee Lauder Companies, Inc. (The), Class A		6,279		809,175
Kimberly-Clark Corporation		9,162		1,096,142
Procter & Gamble Company (The)		63,769		9,567,263
				13,464,582
Materials — 2.5%
Albemarle Corporation		3,178		402,907
Amcor PLC (a)		39,805		353,866
Avery Dennison Corporation		2,189		381,039
Axalta Coating Systems Ltd. (b)		5,952		156,121
Ball Corporation		8,406		404,749
Compass Minerals International, Inc.		974		23,999
Ecolab, Inc.		6,933		1,162,941
H.B. Fuller Company		1,487		98,365
International Flavors & Fragrances, Inc.		6,829		466,762
Linde PLC (a)		13,247		5,062,473
Minerals Technologies, Inc.		928		50,168
Mosaic Company (The)		9,056		294,139
Newmont Corporation		31,191		1,168,727
PPG Industries, Inc.		6,389		784,377
Schnitzer Steel Industries, Inc., Class A		743		16,874
Sealed Air Corporation		3,907		120,297
Sherwin-Williams Company (The)		6,637		1,581,000
Sonoco Products Company		2,649		137,245
				12,666,049

9

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	continued

	SHARES		VALUE
Consumer Services — 2.5%
Aramark		6,750	$	181,777
Choice Hotels International, Inc.		894		98,787
Darden Restaurants, Inc.		3,244		472,099
Domino’s Pizza, Inc.		962		326,108
Hilton Worldwide Holdings, Inc.		7,154		1,084,046
Jack in the Box, Inc.		538		33,991
Marriott International, Inc., Class A		6,982		1,316,526
McDonald’s Corporation		19,754		5,178,906
Royal Caribbean Cruises Ltd. (b)		6,271		531,342
Starbucks Corporation		30,965		2,856,212
Vail Resorts, Inc.		1,104		234,324
				12,314,118
Technology Hardware & Equipment — 2.4%
Cisco Systems, Inc.		110,274		5,748,584
Cognex Corporation		4,698		169,081
CommScope Holding Company, Inc. (b)		5,878		8,699
Corning, Inc.		21,790		583,100
Dell Technologies, Inc., Class C		6,970		466,363
F5, Inc. (b)		1,646		249,517
Flex Ltd. (b)		12,071		310,466
Hewlett Packard Enterprise Company		35,183		541,114
HP, Inc.		24,117		635,001
Keysight Technologies, Inc. (b)		4,785		584,009
Motorola Solutions, Inc.		4,546		1,265,879
TE Connectivity Ltd. (a)		8,516		1,003,611
Trimble, Inc. (b)		6,743		317,798
Xerox Holdings Corporation		3,132		40,215
Zebra Technologies Corporation, Class A (b)		1,400		293,202
				12,216,639
Transportation — 1.9%
ArcBest Corporation		653		71,099
Avis Budget Group, Inc. (b)		604		98,331
C.H. Robinson Worldwide, Inc.		3,170		259,401
CSX Corporation		55,309		1,650,974
Delta Air Lines, Inc.		4,374		136,687

	SHARES		VALUE
Transportation — (continued)
Expeditors International of Washington, Inc.		4,108	$	448,799
J.B. Hunt Transport Services, Inc.		2,256		387,739
Ryder System, Inc.		1,253		122,217
Southwest Airlines Company		4,118		91,543
U-Haul Holding Company		2,684		126,712
Union Pacific Corporation		16,488		3,423,074
United Parcel Service, Inc., Class B		19,574		2,764,827
				9,581,403
Consumer Durables & Apparel — 1.2%
Capri Holdings Ltd. (a)(b)		3,197		163,622
Columbia Sportswear Company		939		69,298
Deckers Outdoor Corporation (b)		712		425,107
Ethan Allen Interiors, Inc.		675		17,725
Garmin Ltd. (a)		4,169		427,448
Hanesbrands, Inc.		9,572		40,107
Hasbro, Inc.		3,588		161,998
La-Z-Boy, Inc.		1,082		31,638
Mattel, Inc. (b)		9,643		183,988
Meritage Homes Corporation		1,003		114,362
Mohawk Industries, Inc. (b)		1,461		117,435
Newell Brands, Inc.		10,571		71,037
NIKE, Inc., Class B		33,322		3,424,502
PVH Corporation		1,720		127,882
Topgolf Callaway Brands Corporation (b)		4,066		49,687
Under Armour, Inc., Class A (b)		5,256		36,004
Under Armour, Inc., Class C (b)		5,382		34,606
VF Corporation		8,973		132,172
Whirlpool Corporation		1,496		156,422
Wolverine World Wide, Inc.		2,254		18,145
				5,803,185
Banks — 0.9%
Bank of Hawaii Corporation		1,083		53,489
Cathay General Bancorp		1,866		63,276
Citizens Financial Group, Inc.		13,185		308,925
Comerica, Inc.		3,589		141,407
Huntington Bancshares, Inc.		39,332		379,554

10

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	continued

	SHARES		VALUE
Banks — (continued)
International Bancshares Corporation		1,478	$	64,781
KeyCorp		25,488		260,487
M&T Bank Corporation		4,479		505,007
Old National Bancorp		8,005		109,668
PNC Financial Services Group, Inc. (The)		10,815		1,237,993
Regions Financial Corporation		25,486		370,312
Truist Financial Corporation		36,040		1,022,094
Zions Bancorp NA		3,986		122,968
				4,639,961
Telecommunication Services — 0.8%
Lumen Technologies Inc.		26,155		38,186
Verizon Communications, Inc.		113,714		3,994,773
				4,032,959
Commercial & Professional Services — 0.4%
ACCO Brands Corporation		2,536		12,832
ASGN, Inc. (b)		1,322		110,334
Copart, Inc. (b)		23,274		1,012,885
Deluxe Corporation		1,187		20,238
Exponent, Inc.		1,400		102,606
Heidrick & Struggles International, Inc.		461		11,221
HNI Corporation		1,309		45,409
ICF International, Inc.		504		63,872
Interface, Inc.		1,373		12,206
Kelly Services, Inc., Class A		788		14,066
ManpowerGroup, Inc.		1,367		95,649
Resources Connection, Inc.		827		11,140
Robert Half International, Inc.		2,860		213,842
Steelcase, Inc., Class A		2,253		24,580
Tetra Tech, Inc.		1,451		218,970
TransUnion		5,266		231,072
TrueBlue, Inc. (b)		927		10,262
				2,211,184
Consumer Staples Distribution & Retail — 0.3%
Kroger Co. (The)		18,524		840,434

	SHARES		VALUE
Consumer Staples Distribution & Retail — (continued)
Sysco Corporation		13,689	$	910,182
				1,750,616
Automobiles & Components — 0.3%
Aptiv PLC (b)		7,650		667,080
Autoliv, Inc. (a)		2,205		202,088
BorgWarner, Inc.		6,429		237,230
Harley-Davidson, Inc.		3,736		100,312
Rivian Automotive, Inc., Class A (b)		17,765		288,148
				1,494,858
Utilities — 0.2%
American Water Works Company, Inc.		5,224		614,604
Essential Utilities, Inc.		6,839		228,833
				843,437
Healthy Living — 0.0%
Hain Celestial Group, Inc. (The) (b)		2,434		26,896
United Natural Foods, Inc. (b)		1,633		23,809
				50,705
Total Common Stocks
(Cost $252,587,433)				501,079,905
SHORT-TERM INVESTMENTS — 0.2%
UMB Money Market Fiduciary Account, 0.01% (c) (Cost $1,116,466)				1,116,466
Total Short-term Investments
(Cost $1,116,466)				1,116,466
TOTAL INVESTMENTS  — 99.9%
(Cost $253,703,899)				502,196,371
Other Assets Less Liabilities — 0.1%				282,388
NET ASSETS — 100.0%			$	502,478,759

11

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	concluded

PLC – Public Limited Company

REIT – Real Estate Investment Trusts

(a) Securities whose value are determined or significantly influenced by trading in markets other than the United States or Canada.

(b) Non-income producing security.

(c) The rate quoted is the annualized seven-day yield of the fund at the period end.

12

GREEN CENTURY MSCI INTERNATIONAL INDEX FUND PORTFOLIO OF INVESTMENTS

October 31, 2023

(unaudited)

COMMON STOCKS — 98.9%
	SHARES		VALUE
Japan — 22.9%
Advantest Corporation		33,500	$	862,914
Aeon Company, Ltd.		28,300		595,422
Ajinomoto Company, Inc.		19,800		723,149
ANA Holdings, Inc. (a)		7,000		137,423
Asahi Kasei Corporation		54,200		333,210
Astellas Pharma, Inc.		78,400		991,750
Azbil Corporation		5,000		147,743
Bridgestone Corporation		25,000		946,130
Brother Industries Ltd.		10,500		163,803
Daikin Industries Ltd.		11,500		1,658,058
Daiwa Securities Group, Inc.		58,300		336,185
FANUC Corporation		41,500		1,029,881
Fuji Electric Company Ltd.		5,500		209,410
Fujitsu Ltd.		7,600		984,561
Hankyu Hanshin Holdings, Inc.		9,900		311,490
Hitachi Ltd.		40,800		2,586,174
Hoya Corporation		15,400		1,482,537
Ibiden Company Ltd.		4,900		208,919
Itochu Techno-Solutions Corporation		300		8,605
KDDI Corp.		65,100		1,947,450
Kikkoman Corporation		6,000		341,369
Kubota Corporation		44,100		593,112
Kyowa Kirin Company Ltd.		11,800		185,075
Lixil Corporation		13,000		142,546
LY Corporation		118,500		302,114
MatsukiyoCocokara & Company		15,000		263,127
Mitsubishi Chemical Group Corporation		55,000		311,223
Mitsui Chemicals, Inc.		7,300		183,993
NEC Corporation		10,800		520,027
Nitto Denko Corporation		6,100		394,705
Nomura Research Institute Ltd.		16,700		438,374
Omron Corporation		7,500		268,704
Ono Pharmaceutical Company Ltd.		17,200		297,035
Oriental Land Company Ltd.		47,600		1,539,639
Rakuten Group, Inc.		64,900		240,060
Renesas Electronics Corporation (a)		55,200		725,086
Secom Company Ltd.		9,200		638,985
Seiko Epson Corporation		12,700		176,316
SG Holdings Company Ltd.		14,100		199,862

	SHARES		VALUE
Japan — (continued)
SoftBank Corporation		124,700	$	1,409,967
Sompo Holdings, Inc.		12,900		558,828
Sony Group Corporation		54,900		4,564,325
Sumitomo Chemical Company, Ltd.		60,400		153,522
Sumitomo Metal Mining Company, Ltd.		10,700		300,584
Sumitomo Mitsui Financial Group, Inc.		55,100		2,656,260
Sysmex Corporation		7,300		349,690
T&D Holdings, Inc.		21,900		390,679
TDK Corporation		16,800		628,576
TIS, Inc.		9,400		201,300
Tobu Railway Company Ltd.		8,400		202,183
Tokio Marine Holdings, Inc.		78,400		1,753,983
Toray Industries, Inc.		59,800		289,303
Unicharm Corporation		17,600		598,028
Yamaha Corporation		6,200		165,602
Yamaha Motor Company Ltd.		13,000		317,679
Yamato Holdings Company Ltd.		11,400		189,879
Yaskawa Electric Corporation		10,400		340,425
ZOZO, Inc.		6,100		115,990
				38,612,969
Canada — 10.6%
Agnico Eagle Mines Ltd.		21,369		1,002,192
Bank of Nova Scotia (The)		51,878		2,100,483
Brookfield Renewable Corporation, Class A		5,779		131,473
Canadian Apartment Properties REIT		3,687		108,526
Dollarama, Inc.		12,270		837,878
Gildan Activewear, Inc.		7,702		218,764
Intact Financial Corporation		7,581		1,065,101
Metro, Inc.		10,074		511,691
National Bank of Canada		14,676		912,435
Nutrien Ltd.		21,470		1,153,076
Open Text Corporation		11,817		394,525
RB Global, Inc.		7,952		520,366
RioCan Real Estate Investment Trust REIT		5,932		72,075
Saputo, Inc.		11,423		230,634
Shopify, Inc. (a)		52,214		2,465,745

13

GREEN CENTURY MSCI INTERNATIONAL INDEX FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	continued

	SHARES		VALUE
Canada — (continued)
Sun Life Financial, Inc.		25,407	$	1,160,426
TELUS Corporation		21,200		341,817
Toronto-Dominion Bank (The)		80,199		4,479,532
West Fraser Timber Company Ltd.		2,527		170,538
				17,877,277
France — 10.5%
Aeroports de Paris		1,252		140,597
AXA SA		80,089		2,373,044
BioMerieux		1,749		167,924
Cie Generale des Etablissements Michelin SCA		29,315		870,895
Credit Agricole SA		53,032		640,351
Danone SA		28,047		1,668,510
Dassault Systemes SE		29,159		1,201,147
Hermes International		1,382		2,578,545
L’Oreal SA		10,494		4,410,905
Schneider Electric SE		23,747		3,653,611
Valeo SA		8,656		114,372
				17,819,901
United Kingdom — 9.5%
3i Group PLC		42,202		995,069
abrdn PLC		83,493		159,405
Admiral Group PLC		9,090		270,102
Auto Trader Group PLC (b)		39,704		300,345
Barratt Developments PLC		42,676		215,232
Berkeley Group Holdings PLC		4,590		225,640
BT Group PLC		281,397		386,506
Burberry Group PLC		16,261		335,156
Croda International PLC		6,286		335,036
Informa PLC		61,286		531,036
InterContinental Hotels Group PLC		7,319		518,669
Intertek Group PLC		7,197		335,207
Johnson Matthey PLC		8,003		145,496
Kingfisher PLC		82,751		211,318
Legal & General Group PLC		260,504		671,225
Mondi PLC		21,342		345,236
Pearson PLC		27,576		319,227
Phoenix Group Holdings PLC		32,241		178,103

	SHARES		VALUE
United Kingdom — (continued)
RELX PLC		82,163	$	2,869,903
Sage Group PLC (The)		45,052		532,262
Schroders PLC		36,232		163,161
Segro PLC REIT		50,789		441,488
St. James’s Place PLC		23,347		182,017
Taylor Wimpey PLC		150,983		203,929
Unilever PLC		109,441		5,183,462
				16,054,230
Netherlands — 8.5%
Akzo Nobel NV		7,456		500,178
ASML Holding NV		13,517		8,125,260
CNH Industrial NV		44,464		492,746
Prosus NV (a)		66,388		1,856,560
STMicroelectronics NV		29,816		1,136,576
Universal Music Group NV		35,502		869,395
Wolters Kluwer NV		11,163		1,432,265
				14,412,980
Denmark — 8.0%
Coloplast A/S, Class B		5,953		620,800
Demant A/S (a)		4,327		165,115
DSV A/S		8,132		1,215,245
Genmab A/S (a)		2,859		808,185
Novo Nordisk A/S, Class B		95,800		9,242,357
Pandora A/S		3,720		421,922
ROCKWOOL A/S B Shares		403		89,676
Vestas Wind Systems A/S (a)		44,111		956,090
				13,519,390
Switzerland — 6.9%
Banque Cantonale Vaudoise		1,251		141,398
DSM-Firmenich AG		8,068		731,403
Givaudan SA		403		1,341,321
Julius Baer Group Ltd.		8,973		531,726
Kuehne + Nagel International AG		2,357		635,563
Logitech International SA		7,175		564,723
Lonza Group AG		3,225		1,129,346
SGS SA		6,578		537,200
SIG Group AG (a)		13,163		290,185
Sonova Holding AG		2,271		538,228

14

GREEN CENTURY MSCI INTERNATIONAL INDEX FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	continued

	SHARES		VALUE
Switzerland — (continued)
Swiss Re AG		13,065	$	1,427,440
Temenos AG		2,687		193,576
VAT Group AG (b)		1,173		415,946
Zurich Insurance Group AG		6,553		3,112,455
				11,590,510
Germany — 6.0%
adidas AG		7,043		1,252,287
Deutsche Boerse AG		8,251		1,358,071
DHL Group		43,057		1,681,077
GEA Group AG		6,853		234,373
Henkel AG & Company KGaA		4,508		284,905
Henkel AG & Company KGaA (c)		7,273		524,633
LEG Immobilien SE (a)		3,254		203,411
Merck KGaA		5,650		853,358
Muenchener Rueckversicherungs-Gesellschaft AG in Muenchen		5,967		2,394,580
Puma SE		4,556		258,177
Telefonica Deutschland Holding AG		39,731		67,544
Vonovia SE		31,808		732,281
Zalando SE (a)(b)		9,821		229,715
				10,074,412
Australia — 4.3%
ASX Ltd.		8,302		296,614
Brambles Ltd.		60,565		505,467
Cochlear Ltd.		2,891		443,120
Coles Group Ltd.		58,436		567,167
Computershare Ltd.		24,706		389,913
Dexus REIT		45,797		189,152
GPT Group (The) REIT		82,602		190,633
IGO Ltd.		29,003		175,626
Lendlease Corporation Ltd.		31,924		126,437
Mineral Resources Ltd.		7,504		276,580
Mirvac Group REIT		170,615		197,954
Northern Star Resources Ltd.		49,922		365,573
Orica Ltd.		19,389		181,171
Pilbara Minerals Ltd.		116,102		272,726
QBE Insurance Group Ltd.		65,066		645,208

	SHARES		VALUE
Australia — (continued)
Scentre Group REIT		231,515	$	358,669
Sonic Healthcare Ltd.		19,369		354,671
Stockland REIT		102,932		232,315
Suncorp Group Ltd.		55,318		470,852
Transurban Group		133,516		1,005,181
				7,245,029
Hong Kong — 3.4%
AIA Group Ltd.		502,400		4,362,719
BOC Hong Kong Holdings Ltd.		161,500		427,091
Hang Seng Bank Ltd.		33,217		379,770
MTR Corporation Ltd.		68,167		254,819
Sino Land Company Ltd.		162,000		161,729
Swire Pacific Ltd. A Shares		18,500		118,174
Swire Properties Ltd.		50,000		96,810
				5,801,112
Ireland — 1.6%
CRH PLC		31,455		1,688,174
James Hardie Industries PLC (a)		19,118		476,989
Kerry Group PLC, Class A		6,954		537,148
				2,702,311
Sweden — 1.4%
Beijer Ref AB		16,766		159,383
Boliden AB		12,344		316,414
Essity AB, Class B		26,527		604,863
Svenska Cellulosa AB SCA, Class B		26,068		357,690
Svenska Handelsbanken AB A Shares		63,762		543,613
Tele2 AB B Shares		23,603		167,619
Telia Company AB		101,114		214,355
				2,363,937
Italy — 1.4%
Amplifon SpA		5,416		153,073
Assicurazioni Generali SpA		44,349		880,922
FinecoBank Banca Fineco SpA		26,292		310,155

15

GREEN CENTURY MSCI INTERNATIONAL INDEX FUND PORTFOLIO OF INVESTMENTS
October 31, 2023
(unaudited)	concluded

	SHARES		VALUE
Italy — (continued)
Mediobanca Banca di Credito Finanziario SpA		23,814	$	284,465
Moncler SpA		8,976		466,183
Poste Italiane SpA (b)		22,894		226,653
				2,321,451
Finland — 1.2%
Elisa Oyj		6,138		260,302
Kesko Oyj B Shares		11,736		198,471
Metso OYJ		28,710		252,943
Nokia Oyj		232,545		774,527
Stora Enso Oyj R Shares		25,120		301,900
Wartsila OYJ Abp		20,038		239,120
				2,027,263
Spain — 0.8%
ACS Actividades de Construccion y Servicios SA		9,456		341,963
Amadeus IT Group SA		19,566		1,116,676
				1,458,639
Norway — 0.8%
DNB Bank ASA		40,059		722,735
Gjensidige Forsikring ASA		9,141		137,085
Orkla ASA		32,833		226,300
Telenor ASA		29,933		305,986
				1,392,106
Belgium — 0.5%
KBC Group NV		10,903		600,038
Umicore SA		8,965		213,301
				813,339
Singapore — 0.4%
CapitaLand Integrated Commercial Trust REIT		233,900		300,609
CapitaLand Investment Ltd.		112,111		240,713
City Developments Ltd.		22,000		101,543
				642,865

	SHARES		VALUE
New Zealand — 0.2%
EBOS Group Ltd.		6,476	$	132,206
Meridian Energy Ltd.		55,922		157,500
				289,706
Total Common Stocks
(Cost $166,743,590)				167,019,427
SHORT-TERM INVESTMENTS — 0.2%
UMB Money Market Fiduciary Account, 0.01% (d) (Cost $323,144)				323,144
Total Short-term Investments
(Cost $323,144)				323,144
TOTAL INVESTMENTS  — 99.1%
(Cost $167,066,734)				167,342,571
Other Assets Less Liabilities — 0.9%				1,466,124
NET ASSETS — 100.0%			$	168,808,695

REIT – Real Estate Investment Trusts

PLC – Public Limited Company

(a) Non-income producing security.

(b) Security exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration to qualified institutional buyers. The total value of these securities is $1,172,659.

(c) Preference shares.

(d) The rate quoted is the annualized seven-day yield of the fund at the period end.

16