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	27,904	256,400	SH		SOLE		256,400	0	0
AbbVie, Inc.	COM	00287Y109	24,622	281,100	SH		SOLE		281,100	0	0
Accenture plc Class A	COM	G1151C101	8,927	39,500	SH		SOLE		39,500	0	0
Activision Blizzard, Inc.	COM	00507V109	11,309	139,700	SH		SOLE		139,700	0	0
Adams Natural Resources Fund, Inc.	COM	00548F105	21,387	2,186,774	SH		SOLE		2,186,774	0	0
Adobe Inc.	COM	00724F101	32,516	66,300	SH		SOLE		66,300	0	0
Alexion Pharmaceuticals, Inc.	COM	015351109	10,436	91,200	SH		SOLE		91,200	0	0
Alliant Energy Corporation	COM	018802108	12,468	241,400	SH		SOLE		241,400	0	0
Alphabet Inc. Class A	COM	02079K305	58,771	40,100	SH		SOLE		40,100	0	0
Amazon.com, Inc.	COM	023135106	106,742	33,900	SH		SOLE		33,900	0	0
American Tower Corporation	COM	03027X100	16,776	69,400	SH		SOLE		69,400	0	0
AmerisourceBergen Corporation	COM	03073E105	15,081	155,600	SH		SOLE		155,600	0	0
Amphenol Corporation Class A	COM	032095101	4,255	39,300	SH		SOLE		39,300	0	0
Aon plc	COM	G0403H108	17,494	84,800	SH		SOLE		84,800	0	0
Apple Inc.	COM	037833100	130,298	1,125,100	SH		SOLE		1,125,100	0	0
Applied Materials, Inc.	COM	038222105	10,980	184,700	SH		SOLE		184,700	0	0
AT&T Inc.	COM	00206R102	13,040	457,382	SH		SOLE		457,382	0	0
Bank of America Corp.	COM	060505104	30,891	1,282,300	SH		SOLE		1,282,300	0	0
Berkshire Hathaway Inc. Class B	COM	084670702	17,546	82,400	SH		SOLE		82,400	0	0
Bristol-Myers Squibb Company	COM	110122108	23,815	395,000	SH		SOLE		395,000	0	0
Capital One Financial Corporation	COM	14040H105	13,359	185,900	SH		SOLE		185,900	0	0
Caterpillar Inc.	COM	149123101	14,035	94,100	SH		SOLE		94,100	0	0
CBRE Group, Inc. Class A	COM	12504L109	6,637	141,300	SH		SOLE		141,300	0	0
CDW Corp.	COM	12514G108	7,997	66,900	SH		SOLE		66,900	0	0
Centene Corporation	COM	15135B101	13,503	231,500	SH		SOLE		231,500	0	0
Charter Communications, Inc. Class A	COM	16119P108	14,610	23,400	SH		SOLE		23,400	0	0
Chevron Corporation	COM	166764100	10,094	140,200	SH		SOLE		140,200	0	0
Chipotle Mexican Grill, Inc.	COM	169656105	14,303	11,500	SH		SOLE		11,500	0	0
Cintas Corporation	COM	172908105	7,921	23,800	SH		SOLE		23,800	0	0
Cisco Systems, Inc.	COM	17275R102	11,533	292,800	SH		SOLE		292,800	0	0
CMS Energy Corporation	COM	125896100	13,215	215,200	SH		SOLE		215,200	0	0
Comcast Corporation Class A	COM	20030N101	30,911	668,200	SH		SOLE		668,200	0	0
ConocoPhillips	COM	20825C104	6,906	210,300	SH		SOLE		210,300	0	0
Costco Wholesale Corporation	COM	22160K105	22,578	63,600	SH		SOLE		63,600	0	0
CVS Health Corporation	COM	126650100	9,297	159,200	SH		SOLE		159,200	0	0
Dick's Sporting Goods, Inc.	COM	253393102	7,686	132,800	SH		SOLE		132,800	0	0
Edwards Lifesciences Corporation	COM	28176E108	14,870	186,300	SH		SOLE		186,300	0	0
Eli Lilly and Company	COM	532457108	19,539	132,000	SH		SOLE		132,000	0	0
Equinix, Inc.	COM	29444U700	10,566	13,900	SH		SOLE		13,900	0	0
Exxon Mobil Corporation	COM	30231G102	2,976	86,700	SH		SOLE		86,700	0	0
Facebook, Inc. Class A	COM	30303M102	51,542	196,800	SH		SOLE		196,800	0	0
Fidelity National Information Services, Inc.	COM	31620M106	18,210	123,700	SH		SOLE		123,700	0	0
General Motors Company	COM	37045V100	5,809	196,300	SH		SOLE		196,300	0	0
Hilton Worldwide Holdings, Inc.	COM	43300A203	9,761	114,400	SH		SOLE		114,400	0	0
Home Depot, Inc.	COM	437076102	32,798	118,100	SH		SOLE		118,100	0	0
Honeywell International Inc.	COM	438516106	24,659	149,800	SH		SOLE		149,800	0	0
Industrial Select Sector SPDR Fund	COM	81369Y704	14,788	192,100	SH		SOLE		192,100	0	0
Intel Corporation	COM	458140100	10,522	203,200	SH		SOLE		203,200	0	0
Intercontinental Exchange, Inc.	COM	45866F104	20,670	206,600	SH		SOLE		206,600	0	0
Johnson & Johnson	COM	478160104	23,568	158,300	SH		SOLE		158,300	0	0
JPMorgan Chase & Co.	COM	46625H100	27,321	283,800	SH		SOLE		283,800	0	0
Kansas City Southern	COM	485170302	13,870	76,700	SH		SOLE		76,700	0	0
L3Harris Technologies Inc.	COM	502431109	15,082	88,800	SH		SOLE		88,800	0	0
Lam Research Corporation	COM	512807108	14,796	44,600	SH		SOLE		44,600	0	0
Las Vegas Sands Corp.	COM	517834107	8,431	180,700	SH		SOLE		180,700	0	0
Lincoln Electric Holdings, Inc.	COM	533900106	10,290	111,800	SH		SOLE		111,800	0	0
Linde plc	COM	G5494J103	20,717	87,000	SH		SOLE		87,000	0	0
Lowe's Companies, Inc.	COM	548661107	20,550	123,900	SH		SOLE		123,900	0	0
LyondellBasell Industries N.V.	COM	N53745100	5,061	71,800	SH		SOLE		71,800	0	0
Magna International Inc.	COM	559222401	5,920	129,400	SH		SOLE		129,400	0	0
Mastercard Incorporated Class A	COM	57636Q104	32,600	96,400	SH		SOLE		96,400	0	0
Merck & Co., Inc.	COM	58933Y105	8,859	106,800	SH		SOLE		106,800	0	0
MetLife, Inc.	COM	59156R108	18,633	501,300	SH		SOLE		501,300	0	0
Microsoft Corporation	COM	594918104	142,162	675,900	SH		SOLE		675,900	0	0
Mondelez International, Inc. Class A	COM	609207105	19,998	348,100	SH		SOLE		348,100	0	0
Morgan Stanley	COM	617446448	17,333	358,500	SH		SOLE		358,500	0	0
Netflix, Inc.	COM	64110L106	9,451	18,900	SH		SOLE		18,900	0	0
NextEra Energy, Inc.	COM	65339F101	22,566	81,300	SH		SOLE		81,300	0	0
NVIDIA Corporation	COM	67066G104	19,430	35,900	SH		SOLE		35,900	0	0
NVR, Inc.	COM	62944T105	7,350	1,800	SH		SOLE		1,800	0	0
Oracle Corporation	COM	68389X105	7,295	122,200	SH		SOLE		122,200	0	0
Parker-Hannifin Corporation	COM	701094104	14,872	73,500	SH		SOLE		73,500	0	0
PayPal Holdings Inc.	COM	70450Y103	8,315	42,200	SH		SOLE		42,200	0	0
PepsiCo, Inc.	COM	713448108	16,452	118,700	SH		SOLE		118,700	0	0
Philip Morris International Inc.	COM	718172109	19,760	263,500	SH		SOLE		263,500	0	0
Prologis, Inc.	COM	74340W103	16,914	168,100	SH		SOLE		168,100	0	0
QUALCOMM Incorporated	COM	747525103	19,323	164,200	SH		SOLE		164,200	0	0
Raytheon Technologies Corporation	COM	75513E101	17,222	299,300	SH		SOLE		299,300	0	0
S&P Global, Inc.	COM	78409V104	22,790	63,200	SH		SOLE		63,200	0	0
salesforce.com, inc.	COM	79466L302	10,304	41,000	SH		SOLE		41,000	0	0
Sherwin-Williams Company	COM	824348106	14,074	20,200	SH		SOLE		20,200	0	0
Simon Property Group, Inc.	COM	828806109	6,067	93,800	SH		SOLE		93,800	0	0
Skyworks Solutions, Inc.	COM	83088M102	12,004	82,500	SH		SOLE		82,500	0	0
T. Rowe Price Group	COM	74144T108	15,502	120,900	SH		SOLE		120,900	0	0
Target Corporation	COM	87612E106	26,714	169,700	SH		SOLE		169,700	0	0
Technology Select Sector SPDR Fund	COM	81369Y803	18,824	161,300	SH		SOLE		161,300	0	0
Coca-Cola Company	COM	191216100	29,642	600,400	SH		SOLE		600,400	0	0
Procter & Gamble Company	COM	742718109	16,032	115,350	SH		SOLE		115,350	0	0
Walt Disney Company	COM	254687106	16,465	132,700	SH		SOLE		132,700	0	0
Thermo Fisher Scientific Inc.	COM	883556102	41,415	93,800	SH		SOLE		93,800	0	0
Union Pacific Corporation	COM	907818108	28,034	142,400	SH		SOLE		142,400	0	0
United Rentals, Inc.	COM	911363109	7,643	43,800	SH		SOLE		43,800	0	0
UnitedHealth Group Incorporated	COM	91324P102	42,993	137,900	SH		SOLE		137,900	0	0
Utilities Select Sector SPDR Fund	COM	81369Y886	6,259	105,400	SH		SOLE		105,400	0	0
Valero Energy Corporation	COM	91913Y100	2,989	69,000	SH		SOLE		69,000	0	0
VeriSign, Inc.	COM	92343E102	11,963	58,400	SH		SOLE		58,400	0	0
Vertex Pharmaceuticals Incorporated	COM	92532F100	14,177	52,100	SH		SOLE		52,100	0	0
ViacomCBS Inc. Class B	COM	92556H206	5,501	196,400	SH		SOLE		196,400	0	0
Visa Inc. Class A	COM	92826C839	42,334	211,700	SH		SOLE		211,700	0	0
Walmart Inc.	COM	931142103	21,140	151,100	SH		SOLE		151,100	0	0
WEC Energy Group Inc.	COM	92939U106	14,186	146,400	SH		SOLE		146,400	0	0