QUEST DIAGNOSTICS INC (DGX) — Institutional Holders, Q2 2026

1,115 institutional investment managers reported a DGX position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $22.2B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← DGX stock profile

DGX in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

112

Added to

432

Trimmed

351

Sold out

Biggest buyers

Boston PartnersAdded · +732,241 sh+$155.2M
FMRAdded · +456,517 sh+$96.8M
Pacer AdvisorsNew · +381,995 sh+$81.0M
BALYASNY ASSET MANAGEMENT L.P.Added · +272,473 sh+$57.8M
MACKENZIE FINANCIALAdded · +206,785 sh+$43.8M

Biggest sellers

PRICE T ROWE ASSOCIATESTrimmed · -853,001 sh-$180.8M
Qube Research & Technologies LtdTrimmed · -391,316 sh-$82.9M
GOLDMAN SACHS GROUPTrimmed · -366,000 sh-$77.6M
JPMORGAN CHASETrimmed · -326,018 sh-$69.1M
VICTORY CAPITAL MANAGEMENTTrimmed · -295,780 sh-$62.7M

DGX 13F holders ranked 1–100 of 1,115

Institutional investors reporting a position in QUEST DIAGNOSTICS INC on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 9,275,411 sh	9,275,411	$2.0B	0.03%	+1.1%
2	VANGUARD CAPITAL MANAGEMENT#2 · 7,233,394 sh	7,233,394	$1.5B	0.03%	+1.2%
3	VANGUARD PORTFOLIO MANAGEMENT#3 · 6,131,045 sh	6,131,045	$1.3B	0.06%	+0.8%
4	STATE STREET#4 · 5,516,643 sh	5,516,643	$1.2B	0.03%	+2.5%
5	PRICE T ROWE ASSOCIATES#5 · 5,444,986 sh	5,444,986	$1.2B	0.12%	-13.5%
6	Boston Partners#6 · 4,744,473 sh	4,744,473	$1.0B	0.89%	+18.3%
7	JPMORGAN CHASE#7 · 3,520,438 sh	3,520,438	$748.6M	0.04%	-8.5%
8	GEODE CAPITAL MANAGEMENT#8 · 3,137,873 sh	3,137,873	$662.6M	0.04%	+1.7%
9	MORGAN STANLEY#9 · 2,460,497 sh	2,460,497	$521.5M	0.03%	-0.8%
10	EdgePoint Investment Group#10 · 2,247,568 sh	2,247,568	$476.4M	3.60%	+0.2%
11	DIMENSIONAL FUND ADVISORS#11 · 1,988,048 sh	1,988,048	$421.4M	0.08%	+2.0%
12	BANK OF AMERICA#12 · 1,935,133 sh	1,935,133	$410.2M	0.03%	+10.4%
13	Grantham, Mayo, Van Otterloo#13 · 1,888,207 sh	1,888,207	$400.2M	0.90%	+0.3%
14	WELLS FARGO & COMPANY#14 · 1,751,220 sh	1,751,220	$371.2M	0.06%	-0.7%
15	DAVIS SELECTED ADVISERS#15 · 1,555,612 sh	1,555,612	$329.8M	1.42%	-3.8%
16	VICTORY CAPITAL MANAGEMENT#16 · 1,550,556 sh	1,550,556	$328.6M	0.18%	-16.0%
17	NORGES BANK#17 · 1,406,620 sh	1,406,620	$298.1M	0.03%	—
18	FMR#18 · 1,398,735 sh	1,398,735	$296.5M	0.01%	+48.5%
19	Invesco Ltd.#19 · 1,379,115 sh	1,379,115	$292.3M	0.02%	-15.8%
20	NORTHERN#20 · 1,127,454 sh	1,127,454	$239.0M	0.03%	+1.2%
21	GOLDMAN SACHS GROUP#21 · 982,694 sh	982,694	$208.3M	0.02%	-27.1%
22	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#22 · 942,407 sh	942,407	$199.7M	0.04%	+11.3%
23	UBS Group AG#23 · 888,906 sh	888,906	$188.4M	0.02%	+26.6%
24	AMERICAN CENTURY COMPANIES#24 · 818,220 sh	818,220	$173.4M	0.08%	-5.7%
25	M&G Plc#25 · 795,650 sh	795,650	$168.7M	0.84%	-1.2%
26	CHARLES SCHWAB INVESTMENT MANAGEMENT#26 · 773,711 sh	773,711	$164.0M	0.02%	+1.7%
27	AMERIPRISE FINANCIAL#27 · 759,975 sh	759,975	$161.1M	0.03%	-5.9%
28	Legal & General Group Plc#28 · 717,085 sh	717,085	$152.0M	0.03%	-2.7%
29	DekaBank Deutsche Girozentrale#29 · 748,680 sh	748,680	$146.2M	0.25%	0.0%
30	Bank of New York Mellon#30 · 629,339 sh	629,339	$133.4M	0.02%	-4.1%
31	VANGUARD FIDUCIARY#31 · 621,639 sh	621,639	$131.8M	0.03%	+0.4%
32	DEUTSCHE BANK AG\#32 · 585,895 sh	585,895	$124.2M	0.04%	+6.4%
33	ALLIANCEBERNSTEIN L.P.#33 · 625,894 sh	625,894	$122.7M	0.04%	-8.1%
34	Nuveen#34 · 563,830 sh	563,830	$119.5M	0.03%	+21.1%
35	PRINCIPAL FINANCIAL GROUP#35 · 517,225 sh	517,225	$109.6M	0.05%	-1.7%
36	RAYMOND JAMES FINANCIAL#36 · 505,762 sh	505,762	$107.2M	0.03%	+10.3%
37	Amundi#37 · 498,751 sh	498,751	$105.7M	0.03%	+22.1%
38	Woodline Partners#38 · 485,841 sh	485,841	$103.0M	0.32%	-18.2%
39	FIDUCIARY MANAGEMENT#39 · 483,557 sh	483,557	$102.5M	1.46%	-32.9%
40	Artemis Investment Management LLP#40 · 467,921 sh	467,921	$99.2M	—	+4.6%
41	CRAWFORD INVESTMENT COUNSEL#41 · 460,081 sh	460,081	$97.5M	1.62%	-5.4%
42	BARCLAYS PLC#42 · 448,726 sh	448,726	$95.1M	0.02%	-20.6%
43	ENVESTNET ASSET MANAGEMENT#43 · 428,564 sh	428,564	$90.8M	0.02%	+3.9%
44	SCHRODER INVESTMENT MANAGEMENT GROUP#44 · 417,715 sh	417,715	$88.8M	0.06%	+41.6%
45	BNP PARIBAS FINANCIAL MARKETS#45 · 395,245 sh	395,245	$83.8M	0.03%	+46.2%
46	Pacer Advisors#46 · 381,995 sh	381,995	$81.0M	0.21%	New
47	M.D. Sass#47 · 360,453 sh	360,453	$76.4M	4.99%	+20.4%
48	ACADIAN ASSET MANAGEMENT#48 · 346,489 sh	346,489	$73.4M	0.09%	+44.7%
49	Qube Research & Technologies Ltd#49 · 343,398 sh	343,398	$72.8M	0.07%	-53.3%
50	MACKENZIE FINANCIAL#50 · 333,295 sh	333,295	$70.6M	0.07%	+163.5%
51	Advisors Capital Management#51 · 327,575 sh	327,575	$69.4M	0.73%	+0.1%
52	CITIGROUP#52 · 315,584 sh	315,584	$66.9M	0.02%	+9.9%
53	Swiss National Bank#53 · 309,900 sh	309,900	$65.7M	0.03%	-5.1%
54	FIRST ADVISORS#54 · 290,970 sh	290,970	$61.7M	0.04%	-11.6%
55	BNP Paribas Asset Management Holding S.A.#55 · 280,319 sh	280,319	$59.4M	0.06%	+21.4%
56	BALYASNY ASSET MANAGEMENT L.P.#56 · 275,371 sh	275,371	$58.4M	0.07%	+9402.1%
57	MARSHALL WACE, LLP#57 · 269,760 sh	269,760	$57.2M	0.05%	+34.7%
58	GREAT WEST LIFE ASSURANCE#58 · 269,711 sh	269,711	$57.0M	0.09%	-11.8%
59	Mitsubishi UFJ Asset Management , Ltd.#59 · 268,354 sh	268,354	$56.9M	0.03%	+6.7%
60	RHUMBLINE ADVISERS#60 · 267,727 sh	267,727	$56.7M	0.04%	+1.7%
61	Sumitomo Mitsui#61 · 258,597 sh	258,597	$54.8M	0.03%	-2.3%
62	VANGUARD ASSET MANAGEMENT, Ltd#62 · 253,146 sh	253,146	$53.7M	0.04%	+11.7%
63	Quantinno Capital Management#63 · 252,924 sh	252,924	$53.6M	0.06%	+9.5%
64	FIL Ltd#64 · 251,976 sh	251,976	$53.4M	0.04%	+191.1%
65	BANK OF MONTREAL#65 · 243,647 sh	243,647	$51.6M	0.02%	+15.8%
66	VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V.#66 · 242,907 sh	242,907	$51.5M	0.39%	-5.2%
67	Clark Capital Management Group#67 · 241,846 sh	241,846	$51.3M	0.28%	+2.7%
68	Vanguard Global Advisers#68 · 240,742 sh	240,742	$51.0M	0.02%	-0.7%
69	NOMURA ASSET MANAGEMENT INTERNATIONAL#69 · 232,797 sh	232,797	$49.3M	0.07%	+9.7%
70	HSBC PLC#70 · 224,986 sh	224,986	$47.8M	0.02%	+15.3%
71	Eurizon Capital SGR S.p.A.#71 · 222,564 sh	222,564	$47.2M	0.13%	-7.6%
72	ROYAL BANK OF CANADA#72 · 219,613 sh	219,613	$46.5M	<0.01%	+10.6%
73	VOYA INVESTMENT MANAGEMENT#73 · 211,496 sh	211,496	$44.8M	0.04%	+13.6%
74	PFA Pension, Forsikringsaktieselskab#74 · 205,613 sh	205,613	$43.6M	0.11%	New
75	Integral Health Asset Management#75 · 200,000 sh	200,000	$42.4M	1.67%	+233.3%
76	CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM#76 · 196,151 sh	196,151	$41.6M	0.02%	-17.5%
77	EASTERN BANK#77 · 189,969 sh	189,969	$40.3M	—	+143.6%
78	CONNING#78 · 186,734 sh	186,734	$39.6M	1.18%	+6.2%
79	SEB Asset Management AB#79 · 182,906 sh	182,906	$38.8M	0.15%	+30.7%
80	Focus Partners Wealth#80 · 163,327 sh	163,327	$34.6M	0.04%	+8.3%
81	SG Americas Securities#81 · 162,837 sh	162,837	$34.5M	0.02%	-25.1%
82	STOREBRAND ASSET MANAGEMENT AS#82 · 160,970 sh	160,970	$34.1M	0.08%	+14.5%
83	COOKSON PEIRCE#83 · 155,589 sh	155,589	$33.0M	1.09%	-0.5%
84	CREDIT AGRICOLE S A#84 · 155,438 sh	155,438	$32.9M	0.07%	+4.6%
85	BRAUN STACEY ASSOCIATES#85 · 154,396 sh	154,396	$32.7M	—	-1.6%
86	Willis Investment Counsel#86 · 151,500 sh	151,500	$32.1M	—	-0.2%
87	Copeland Capital Management#87 · 144,784 sh	144,784	$30.7M	—	-6.8%
88	LPL Financial#88 · 143,079 sh	143,079	$30.3M	<0.01%	+29.2%
89	CITADEL ADVISORS#89 · 133,211 sh	133,211	$28.2M	<0.01%	-61.6%
90	APG Asset Management N.V.#90 · 150,334 sh	150,334	$27.9M	0.07%	-2.3%
91	SILVERCREST ASSET MANAGEMENT GROUP#91 · 126,888 sh	126,888	$26.9M	0.18%	+10.6%
92	Achmea Investment Management B.V.#92 · 124,786 sh	124,786	$26.4M	0.66%	-9.0%
93	WILEY BROS.-AINTREE CAPITAL#93 · 124,363 sh	124,363	$26.4M	0.11%	+1.8%
94	STIFEL FINANCIAL#94 · 123,220 sh	123,220	$26.1M	0.02%	+10.0%
95	FRANKLIN RESOURCES#95 · 120,973 sh	120,973	$25.6M	<0.01%	-0.6%
96	Candriam S.C.A.#96 · 120,238 sh	120,238	$25.5M	0.11%	+15.5%
97	Squarepoint Ops#97 · 117,831 sh	117,831	$25.0M	0.03%	-65.9%
98	Gotham Asset Management#98 · 117,533 sh	117,533	$24.9M	0.06%	-10.1%
99	NATIONAL BANK OF CANADA#99 · 117,005 sh	117,005	$24.8M	0.02%	+139.0%
100	Universal- Beteiligungs- und Servicegesellschaft mbH#100 · 116,373 sh	116,373	$24.6M	0.04%	-11.8%

Funds that sold out of DGX in Q2 2026 (69)

Held DGX at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held DGX in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
WORLDQUANT MILLENNIUM ADVISORS26,745 sh	26,745	$5.2M
CAPITAL FUND MANAGEMENT S.A.26,563 sh	26,563	$5.2M
TUDOR INVESTMENT ET AL18,225 sh	18,225	$3.6M
Soviero Asset Management18,000 sh	18,000	$3.5M
Y-Intercept (Hong Kong) Ltd13,146 sh	13,146	$2.6M
Zurich Insurance Group Ltd11,500 sh	11,500	$2.3M
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP11,468 sh	11,468	$2.2M
PRIMORIS WEALTH ADVISORS10,750 sh	10,750	$2.1M
Bleakley Financial Group10,559 sh	10,559	$2.1M
Highview Capital Management9,501 sh	9,501	$1.9M
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.8,950 sh	8,950	$1.8M
Havemeyer Place8,663 sh	8,663	$1.7M
PICTON MAHONEY ASSET MANAGEMENT8,030 sh	8,030	$1.6M
AG2R LA MONDIALE GESTION D'ACTIFS7,136 sh	7,136	$1.4M
WBI INVESTMENTS6,057 sh	6,057	$1.2M
Freestone Grove Partners5,690 sh	5,690	$1.1M
Integrated Quantitative Investments5,382 sh	5,382	$1.1M
IMC-Chicago5,227 sh	5,227	$1.0M
Jain Global4,378 sh	4,378	$858.0K
AZZAD ASSET MANAGEMENT4,286 sh	4,286	$839.9K
Vinva Investment Management Ltd3,753 sh	3,753	$739.9K
Stegent Equity Advisors3,061 sh	3,061	$599.9K
MAVERICK CAPITAL LTD2,756 sh	2,756	$540.1K
Ironsides Asset Advisors2,366 sh	2,366	$463.7K
WealthShield Partners2,221 sh	2,221	$435.3K
DRW Securities2,175 sh	2,175	$426.3K
AlphaGrep UK Ltd2,106 sh	2,106	$412.7K
EVOKE WEALTH1,777 sh	1,777	$348.4K
BOOTHBAY FUND MANAGEMENT1,705 sh	1,705	$334.1K
Farringdon Capital, Ltd.1,583 sh	1,583	$310.2K
Tradewinds1,537 sh	1,537	$296.1K
TWO SIGMA SECURITIES1,490 sh	1,490	$292.0K
Abel Hall1,429 sh	1,429	$280.1K
Golden State Equity Partners1,428 sh	1,428	$279.9K
Addison Advisors1,400 sh	1,400	$274.4K
David R. Rahn & Associates1,298 sh	1,298	$254.4K
MIRABELLA FINANCIAL SERVICES LLP1,262 sh	1,262	$247.3K
MOR Wealth Management1,244 sh	1,244	$243.8K
Willis Johnson & Associates1,208 sh	1,208	$236.8K
DV Trading1,200 sh	1,200	$235.2K
EVOLVE PRIVATE WEALTH1,079 sh	1,079	$211.5K
Catalyst Funds Management Pty Ltd1,065 sh	1,065	$208.7K
GROUP ONE TRADING, L.P.961 sh	961	$188.3K
Walleye Trading549 sh	549	$107.6K
Root Financial Partners432 sh	432	$84.7K
TIAA , NATIONAL ASSOCIATION287 sh	287	$56.2K
TopTier Wealth Management205 sh	205	$40.2K
TWIN PEAKS WEALTH ADVISORS134 sh	134	$26.3K
Merkkuri Wealth Advisors108 sh	108	$21.1K
Western Wealth Management103 sh	103	$20.1K
Sachetta100 sh	100	$19.6K
BALLAST ADVISORS100 sh	100	$19.6K
Estabrook Capital Management94 sh	94	$18.4K
Sound Income Strategies77 sh	77	$15.2K
Kemnay Advisory Services44 sh	44	$8.6K
CITY HOLDING38 sh	38	$7.4K
Scarborough Advisors37 sh	37	$7.3K
Crews Bank31 sh	31	$6.1K
MJT & Associates Financial Advisory Group22 sh	22	$4.3K
Clayton Financial Group19 sh	19	$3.7K
ALBION FINANCIAL GROUP11 sh	11	$2.2K
Vermillion Wealth Management7 sh	7	$1.4K
EVOLUTION WEALTH MANAGEMENT7 sh	7	$1.4K
Capital Analysts4 sh	4	$1.0K
Caitlin John3 sh	3	$640.00
North Star Investment Management3 sh	3	$588.00
Synergy Investment Management3 sh	3	$588.00
CURIO WEALTH2 sh	2	$392.00
Lloyd Advisory Services1 sh	1	$123.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.