Adams Diversified Equity Fund (ADX) 13F-HR Quarterly holdings report by institutional manager

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE

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COLUMN 1	COLUMN 2	COLUMN 3	COLUMN 4	COLUMN 5			COLUMN 6	COLUMN 7	COLUMN 8
			VALUE	SHRS OR	SH/	PUT/	INVESTMENT	OTHER	VOTING AUTHORITY
NAME OF ISSUER	TITLE OF CLASS	CUSIP	(x$1000)	PRN AMT	PRN	CALL	DISCRETION	MANAGER	SOLE	SHARED	NONE
Abbott Laboratories	COM	002824100	28,073	256,400	SH		SOLE		256,400	0	0
AbbVie, Inc.	COM	00287Y109	25,812	240,900	SH		SOLE		240,900	0	0
Accenture plc Class A	COM	G1151C101	10,318	39,500	SH		SOLE		39,500	0	0
Adams Natural Resources Fund, Inc.	COM	00548F105	24,864	2,186,774	SH		SOLE		2,186,774	0	0
Adobe Inc.	COM	00724F101	35,258	70,500	SH		SOLE		70,500	0	0
Alexion Pharmaceuticals, Inc.	COM	015351109	14,249	91,200	SH		SOLE		91,200	0	0
Alliant Energy Corporation	COM	018802108	8,348	162,000	SH		SOLE		162,000	0	0
Alphabet Inc. Class A	COM	02079K305	70,281	40,100	SH		SOLE		40,100	0	0
Amazon.com, Inc.	COM	023135106	109,433	33,600	SH		SOLE		33,600	0	0
American Tower Corporation	COM	03027X100	11,941	53,200	SH		SOLE		53,200	0	0
AmerisourceBergen Corporation	COM	03073E105	15,211	155,600	SH		SOLE		155,600	0	0
Amphenol Corporation Class A	COM	032095101	10,945	83,700	SH		SOLE		83,700	0	0
Apple Inc.	COM	037833100	153,695	1,158,300	SH		SOLE		1,158,300	0	0
AT&T Inc.	COM	00206R102	6,841	237,882	SH		SOLE		237,882	0	0
Bank of America Corp.	COM	060505104	37,639	1,241,800	SH		SOLE		1,241,800	0	0
Berkshire Hathaway Inc. Class B	COM	084670702	19,106	82,400	SH		SOLE		82,400	0	0
Bristol-Myers Squibb Company	COM	110122108	23,633	381,000	SH		SOLE		381,000	0	0
Capital One Financial Corporation	COM	14040H105	25,810	261,100	SH		SOLE		261,100	0	0
Carrier Global Corporation	COM	14448C104	18,600	493,100	SH		SOLE		493,100	0	0
Caterpillar Inc.	COM	149123101	23,080	126,800	SH		SOLE		126,800	0	0
CBRE Group, Inc. Class A	COM	12504L109	8,862	141,300	SH		SOLE		141,300	0	0
CDW Corp.	COM	12514G108	8,817	66,900	SH		SOLE		66,900	0	0
Centene Corporation	COM	15135B101	13,897	231,500	SH		SOLE		231,500	0	0
Charter Communications, Inc. Class A	COM	16119P108	15,480	23,400	SH		SOLE		23,400	0	0
Chevron Corporation	COM	166764100	13,436	159,100	SH		SOLE		159,100	0	0
Chipotle Mexican Grill, Inc.	COM	169656105	14,838	10,700	SH		SOLE		10,700	0	0
Cintas Corporation	COM	172908105	6,680	18,900	SH		SOLE		18,900	0	0
Cisco Systems, Inc.	COM	17275R102	12,168	271,900	SH		SOLE		271,900	0	0
CMS Energy Corporation	COM	125896100	8,731	143,100	SH		SOLE		143,100	0	0
Comcast Corporation Class A	COM	20030N101	29,134	556,000	SH		SOLE		556,000	0	0
ConocoPhillips	COM	20825C104	9,206	230,200	SH		SOLE		230,200	0	0
Costco Wholesale Corporation	COM	22160K105	23,963	63,600	SH		SOLE		63,600	0	0
CVS Health Corporation	COM	126650100	10,873	159,200	SH		SOLE		159,200	0	0
Edwards Lifesciences Corporation	COM	28176E108	16,996	186,300	SH		SOLE		186,300	0	0
Eli Lilly and Company	COM	532457108	22,287	132,000	SH		SOLE		132,000	0	0
Equinix, Inc.	COM	29444U700	12,284	17,200	SH		SOLE		17,200	0	0
Exxon Mobil Corporation	COM	30231G102	3,574	86,700	SH		SOLE		86,700	0	0
Facebook, Inc. Class A	COM	30303M102	57,855	211,800	SH		SOLE		211,800	0	0
Fidelity National Information Services, Inc.	COM	31620M106	15,391	108,800	SH		SOLE		108,800	0	0
General Motors Company	COM	37045V100	8,174	196,300	SH		SOLE		196,300	0	0
Hilton Worldwide Holdings, Inc.	COM	43300A203	12,728	114,400	SH		SOLE		114,400	0	0
Home Depot, Inc.	COM	437076102	14,423	54,300	SH		SOLE		54,300	0	0
Honeywell International Inc.	COM	438516106	31,862	149,800	SH		SOLE		149,800	0	0
Intercontinental Exchange, Inc.	COM	45866F104	23,819	206,600	SH		SOLE		206,600	0	0
Intuit Inc.	COM	461202103	16,523	43,500	SH		SOLE		43,500	0	0
Johnson & Johnson	COM	478160104	22,883	145,400	SH		SOLE		145,400	0	0
JPMorgan Chase & Co.	COM	46625H100	38,210	300,700	SH		SOLE		300,700	0	0
Kansas City Southern	COM	485170302	14,493	71,000	SH		SOLE		71,000	0	0
L3Harris Technologies Inc.	COM	502431109	14,214	75,200	SH		SOLE		75,200	0	0
Lam Research Corporation	COM	512807108	21,063	44,600	SH		SOLE		44,600	0	0
Lamb Weston Holdings, Inc.	COM	513272104	12,543	159,300	SH		SOLE		159,300	0	0
Las Vegas Sands Corp.	COM	517834107	10,770	180,700	SH		SOLE		180,700	0	0
Liberty SiriusXM Group Series A	COM	531229409	4,673	108,200	SH		SOLE		108,200	0	0
Lincoln Electric Holdings, Inc.	COM	533900106	11,892	102,300	SH		SOLE		102,300	0	0
Linde plc	COM	G5494J103	17,550	66,600	SH		SOLE		66,600	0	0
Lowe's Companies, Inc.	COM	548661107	19,887	123,900	SH		SOLE		123,900	0	0
LyondellBasell Industries N.V.	COM	N53745100	12,383	135,100	SH		SOLE		135,100	0	0
Mastercard Incorporated Class A	COM	57636Q104	39,442	110,500	SH		SOLE		110,500	0	0
Merck & Co., Inc.	COM	58933Y105	6,806	83,200	SH		SOLE		83,200	0	0
MetLife, Inc.	COM	59156R108	25,466	542,400	SH		SOLE		542,400	0	0
Microchip Technology Incorporated	COM	595017104	15,634	113,200	SH		SOLE		113,200	0	0
Microsoft Corporation	COM	594918104	146,664	659,400	SH		SOLE		659,400	0	0
Mondelez International, Inc. Class A	COM	609207105	14,009	239,600	SH		SOLE		239,600	0	0
Morgan Stanley	COM	617446448	29,379	428,700	SH		SOLE		428,700	0	0
Netflix, Inc.	COM	64110L106	8,074	14,931	SH		SOLE		14,931	0	0
NextEra Energy, Inc.	COM	65339F101	25,089	325,200	SH		SOLE		325,200	0	0
NVIDIA Corporation	COM	67066G104	23,238	44,500	SH		SOLE		44,500	0	0
Oracle Corporation	COM	68389X105	7,905	122,200	SH		SOLE		122,200	0	0
Parker-Hannifin Corporation	COM	701094104	20,022	73,500	SH		SOLE		73,500	0	0
PayPal Holdings Inc.	COM	70450Y103	9,883	42,200	SH		SOLE		42,200	0	0
PepsiCo, Inc.	COM	713448108	16,669	112,400	SH		SOLE		112,400	0	0
Philip Morris International Inc.	COM	718172109	16,633	200,900	SH		SOLE		200,900	0	0
Prologis, Inc.	COM	74340W103	16,753	168,100	SH		SOLE		168,100	0	0
Public Service Enterprise Group Incorporated	COM	744573106	12,628	216,600	SH		SOLE		216,600	0	0
QUALCOMM Incorporated	COM	747525103	27,558	180,900	SH		SOLE		180,900	0	0
Raytheon Technologies Corporation	COM	75513E101	15,003	209,800	SH		SOLE		209,800	0	0
S&P Global, Inc.	COM	78409V104	12,590	38,300	SH		SOLE		38,300	0	0
salesforce.com, inc.	COM	79466L302	4,562	20,500	SH		SOLE		20,500	0	0
Sherwin-Williams Company	COM	824348106	14,845	20,200	SH		SOLE		20,200	0	0
Simon Property Group, Inc.	COM	828806109	7,999	93,800	SH		SOLE		93,800	0	0
Skyworks Solutions, Inc.	COM	83088M102	12,613	82,500	SH		SOLE		82,500	0	0
T. Rowe Price Group	COM	74144T108	16,153	106,700	SH		SOLE		106,700	0	0
Target Corporation	COM	87612E106	28,686	162,500	SH		SOLE		162,500	0	0
Tesla Motors, Inc.	COM	88160R101	23,852	33,800	SH		SOLE		33,800	0	0
Coca-Cola Company	COM	191216100	23,428	427,200	SH		SOLE		427,200	0	0
Procter & Gamble Company	COM	742718109	16,050	115,350	SH		SOLE		115,350	0	0
Walt Disney Company	COM	254687106	24,043	132,700	SH		SOLE		132,700	0	0
Thermo Fisher Scientific Inc.	COM	883556102	41,454	89,000	SH		SOLE		89,000	0	0
TJX Companies, Inc.	COM	872540109	11,719	171,600	SH		SOLE		171,600	0	0
T-Mobile US, Inc.	COM	872590104	13,687	101,500	SH		SOLE		101,500	0	0
Union Pacific Corporation	COM	907818108	29,651	142,400	SH		SOLE		142,400	0	0
United Rentals, Inc.	COM	911363109	10,158	43,800	SH		SOLE		43,800	0	0
UnitedHealth Group Incorporated	COM	91324P102	46,325	132,100	SH		SOLE		132,100	0	0
Vertex Pharmaceuticals Incorporated	COM	92532F100	16,827	71,200	SH		SOLE		71,200	0	0
ViacomCBS Inc. Class B	COM	92556H206	7,318	196,400	SH		SOLE		196,400	0	0
Visa Inc. Class A	COM	92826C839	41,471	189,600	SH		SOLE		189,600	0	0
Walmart Inc.	COM	931142103	26,005	180,400	SH		SOLE		180,400	0	0
WEC Energy Group Inc.	COM	92939U106	9,166	99,600	SH		SOLE		99,600	0	0
Wells Fargo & Company	COM	949746101	9,226	305,700	SH		SOLE		305,700	0	0