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	30,727	256,400	SH		SOLE		256,400	0	0
AbbVie, Inc.	COM	00287Y109	26,070	240,900	SH		SOLE		240,900	0	0
Accenture plc Class A	COM	G1151C101	10,912	39,500	SH		SOLE		39,500	0	0
Activision Blizzard, Inc.	COM	00507V109	11,718	126,000	SH		SOLE		126,000	0	0
Adams Natural Resources Fund, Inc.	COM	00548F105	32,167	2,186,774	SH		SOLE		2,186,774	0	0
Adobe Inc.	COM	00724F101	26,526	55,800	SH		SOLE		55,800	0	0
Air Products and Chemicals, Inc.	COM	009158106	4,473	15,900	SH		SOLE		15,900	0	0
Alaska Air Group, Inc.	COM	011659109	12,402	179,200	SH		SOLE		179,200	0	0
Alexion Pharmaceuticals, Inc.	COM	015351109	13,945	91,200	SH		SOLE		91,200	0	0
Alphabet Inc. Class A	COM	02079K305	93,638	45,400	SH		SOLE		45,400	0	0
Amazon.com, Inc.	COM	023135106	98,082	31,700	SH		SOLE		31,700	0	0
AmerisourceBergen Corporation	COM	03073E105	18,372	155,600	SH		SOLE		155,600	0	0
Amphenol Corporation Class A	COM	032095101	14,500	219,800	SH		SOLE		219,800	0	0
Apple Inc.	COM	037833100	130,139	1,065,400	SH		SOLE		1,065,400	0	0
Arista Networks, Inc.	COM	040413106	13,494	44,700	SH		SOLE		44,700	0	0
AT&T Inc.	COM	00206R102	7,201	237,882	SH		SOLE		237,882	0	0
Bank of America Corp.	COM	060505104	44,432	1,148,400	SH		SOLE		1,148,400	0	0
Berkshire Hathaway Inc. Class B	COM	084670702	43,328	169,600	SH		SOLE		169,600	0	0
Bristol-Myers Squibb Company	COM	110122108	17,064	270,300	SH		SOLE		270,300	0	0
Capital One Financial Corporation	COM	14040H105	23,563	185,200	SH		SOLE		185,200	0	0
Carrier Global Corporation	COM	14448C104	16,576	392,600	SH		SOLE		392,600	0	0
Caterpillar Inc.	COM	149123101	29,401	126,800	SH		SOLE		126,800	0	0
CBRE Group, Inc. Class A	COM	12504L109	9,968	126,000	SH		SOLE		126,000	0	0
CDW Corp.	COM	12514G108	11,089	66,900	SH		SOLE		66,900	0	0
Centene Corporation	COM	15135B101	8,615	134,800	SH		SOLE		134,800	0	0
Chipotle Mexican Grill, Inc.	COM	169656105	15,203	10,700	SH		SOLE		10,700	0	0
Cisco Systems, Inc.	COM	17275R102	14,060	271,900	SH		SOLE		271,900	0	0
CMS Energy Corporation	COM	125896100	11,069	180,800	SH		SOLE		180,800	0	0
Comcast Corporation Class A	COM	20030N101	38,456	710,700	SH		SOLE		710,700	0	0
ConocoPhillips	COM	20825C104	16,675	314,800	SH		SOLE		314,800	0	0
Constellation Brands, Inc. Class A	COM	21036P108	11,947	52,400	SH		SOLE		52,400	0	0
Costco Wholesale Corporation	COM	22160K105	18,681	53,000	SH		SOLE		53,000	0	0
CVS Health Corporation	COM	126650100	18,943	251,800	SH		SOLE		251,800	0	0
DuPont de Nemours, Inc.	COM	26614N102	13,733	177,700	SH		SOLE		177,700	0	0
Edison International	COM	281020107	11,609	198,100	SH		SOLE		198,100	0	0
Edwards Lifesciences Corporation	COM	28176E108	15,582	186,300	SH		SOLE		186,300	0	0
Eli Lilly and Company	COM	532457108	24,660	132,000	SH		SOLE		132,000	0	0
Equinix, Inc.	COM	29444U700	13,320	19,600	SH		SOLE		19,600	0	0
Facebook, Inc. Class A	COM	30303M102	55,872	189,700	SH		SOLE		189,700	0	0
Fair Isaac Corporation	COM	303250104	11,957	24,600	SH		SOLE		24,600	0	0
General Motors Company	COM	37045V100	11,279	196,300	SH		SOLE		196,300	0	0
Hess Corporation	COM	42809H107	13,501	190,800	SH		SOLE		190,800	0	0
Hilton Worldwide Holdings, Inc.	COM	43300A203	13,833	114,400	SH		SOLE		114,400	0	0
Home Depot, Inc.	COM	437076102	8,333	27,300	SH		SOLE		27,300	0	0
Honeywell International Inc.	COM	438516106	27,742	127,800	SH		SOLE		127,800	0	0
Huntington Ingalls Industries, Inc.	COM	446413106	13,174	64,000	SH		SOLE		64,000	0	0
IDEXX Laboratories, Inc.	COM	45168D104	6,752	13,800	SH		SOLE		13,800	0	0
Intercontinental Exchange, Inc.	COM	45866F104	10,587	94,800	SH		SOLE		94,800	0	0
Intuit Inc.	COM	461202103	19,957	52,100	SH		SOLE		52,100	0	0
Johnson & Johnson	COM	478160104	23,896	145,400	SH		SOLE		145,400	0	0
JPMorgan Chase & Co.	COM	46625H100	45,776	300,700	SH		SOLE		300,700	0	0
Kansas City Southern	COM	485170302	12,747	48,300	SH		SOLE		48,300	0	0
Knight-Swift Transportation Holdings Inc.	COM	499049104	12,215	254,000	SH		SOLE		254,000	0	0
Lam Research Corporation	COM	512807108	26,548	44,600	SH		SOLE		44,600	0	0
Lamb Weston Holdings, Inc.	COM	513272104	17,805	229,800	SH		SOLE		229,800	0	0
Lowe's Companies, Inc.	COM	548661107	15,519	81,600	SH		SOLE		81,600	0	0
LyondellBasell Industries N.V.	COM	N53745100	11,945	114,800	SH		SOLE		114,800	0	0
Mastercard Incorporated Class A	COM	57636Q104	39,344	110,500	SH		SOLE		110,500	0	0
MetLife, Inc.	COM	59156R108	31,696	521,400	SH		SOLE		521,400	0	0
Microchip Technology Incorporated	COM	595017104	17,571	113,200	SH		SOLE		113,200	0	0
Micron Technology, Inc.	COM	595112103	24,372	276,300	SH		SOLE		276,300	0	0
Microsoft Corporation	COM	594918104	145,729	618,100	SH		SOLE		618,100	0	0
Monster Beverage Corporation	COM	61174X109	14,656	160,900	SH		SOLE		160,900	0	0
Morgan Stanley	COM	617446448	32,136	413,800	SH		SOLE		413,800	0	0
Netflix, Inc.	COM	64110L106	13,214	25,331	SH		SOLE		25,331	0	0
NextEra Energy, Inc.	COM	65339F101	9,383	124,100	SH		SOLE		124,100	0	0
NVIDIA Corporation	COM	67066G104	31,021	58,100	SH		SOLE		58,100	0	0
Oracle Corporation	COM	68389X105	8,575	122,200	SH		SOLE		122,200	0	0
O'Reilly Automotive, Inc.	COM	67103H107	15,065	29,700	SH		SOLE		29,700	0	0
Parker-Hannifin Corporation	COM	701094104	23,184	73,500	SH		SOLE		73,500	0	0
PayPal Holdings Inc.	COM	70450Y103	10,248	42,200	SH		SOLE		42,200	0	0
PepsiCo, Inc.	COM	713448108	11,146	78,800	SH		SOLE		78,800	0	0
Philip Morris International Inc.	COM	718172109	27,483	309,700	SH		SOLE		309,700	0	0
Post Holdings, Inc.	COM	737446104	12,369	117,000	SH		SOLE		117,000	0	0
Prologis, Inc.	COM	74340W103	9,837	92,800	SH		SOLE		92,800	0	0
Public Service Enterprise Group Incorporated	COM	744573106	14,083	233,900	SH		SOLE		233,900	0	0
QUALCOMM Incorporated	COM	747525103	20,883	157,500	SH		SOLE		157,500	0	0
Raytheon Technologies Corporation	COM	75513E101	16,211	209,800	SH		SOLE		209,800	0	0
Schlumberger N.V.	COM	806857108	13,320	489,900	SH		SOLE		489,900	0	0
Sherwin-Williams Company	COM	824348106	14,908	20,200	SH		SOLE		20,200	0	0
Simon Property Group, Inc.	COM	828806109	10,455	91,900	SH		SOLE		91,900	0	0
Southern Company	COM	842587107	13,849	222,800	SH		SOLE		222,800	0	0
Steel Dynamics, Inc.	COM	858119100	11,939	235,200	SH		SOLE		235,200	0	0
T. Rowe Price Group	COM	74144T108	18,310	106,700	SH		SOLE		106,700	0	0
Target Corporation	COM	87612E106	28,582	144,300	SH		SOLE		144,300	0	0
Tesla Motors, Inc.	COM	88160R101	24,446	36,600	SH		SOLE		36,600	0	0
Boeing Company	COM	097023105	24,912	97,800	SH		SOLE		97,800	0	0
Coca-Cola Company	COM	191216100	14,137	268,200	SH		SOLE		268,200	0	0
Procter & Gamble Company	COM	742718109	15,622	115,350	SH		SOLE		115,350	0	0
Walt Disney Company	COM	254687106	24,486	132,700	SH		SOLE		132,700	0	0
Thermo Fisher Scientific Inc.	COM	883556102	40,618	89,000	SH		SOLE		89,000	0	0
TJX Companies, Inc.	COM	872540109	18,568	280,700	SH		SOLE		280,700	0	0
T-Mobile US, Inc.	COM	872590104	12,717	101,500	SH		SOLE		101,500	0	0
Ulta Beauty, Inc.	COM	90384S303	11,656	37,700	SH		SOLE		37,700	0	0
Union Pacific Corporation	COM	907818108	11,395	51,700	SH		SOLE		51,700	0	0
United Rentals, Inc.	COM	911363109	14,424	43,800	SH		SOLE		43,800	0	0
UnitedHealth Group Incorporated	COM	91324P102	49,150	132,100	SH		SOLE		132,100	0	0
V.F. Corporation	COM	918204108	14,977	187,400	SH		SOLE		187,400	0	0
Vertex Pharmaceuticals Incorporated	COM	92532F100	15,300	71,200	SH		SOLE		71,200	0	0
Visa Inc. Class A	COM	92826C839	40,144	189,600	SH		SOLE		189,600	0	0
Wells Fargo & Company	COM	949746101	26,009	665,700	SH		SOLE		665,700	0	0
Weyerhaeuser Company	COM	962166104	10,420	292,700	SH		SOLE		292,700	0	0