Vault-13

QUEST DIAGNOSTICS INC DGX

COM · Common Stock · CUSIP 74834L100 · ISIN US74834L1008

Medical research company

809 institutional holders
102,793,307102.8m shares reported held*
90.3% of all shares outstanding*
$12.6bnreported value*

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($50.5m this quarter). Holder counts are more reliable. Shares outstanding: 113.9m as of 2022-10-14, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $122.82. Options: 14 managers hold calls ($68.5m notional), 12 hold puts ($27.3m).

Biggest calls

CITADEL ADVISORS LLC — $16.6m135.3k shares
Caption Management, LLC — $11.0m89.5k shares
MILLENNIUM MANAGEMENT LLC — $8.6m70.0k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP — $8.5m69.5k shares
GROUP ONE TRADING LLC — $7.5m60.8k shares
JANE STREET GROUP, LLC — $6.9m56.0k shares
Walleye Trading LLC — $4.2m34.5k shares
WOLVERINE TRADING, LLC — $1.5m12.4k shares
PEAK6 Investments LLC — $871.0k7.1k shares
TWO SIGMA SECURITIES, LLC — $822.0k6.7k shares

Biggest puts

CITADEL ADVISORS LLC — $6.6m54.1k shares
PEAK6 Investments LLC — $6.2m50.3k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP — $3.1m25.5k shares
JANE STREET GROUP, LLC — $3.0m24.4k shares
Walleye Trading LLC — $2.8m23.1k shares
CAPSTONE INVESTMENT ADVISORS, LLC — $2.7m21.7k shares
GROUP ONE TRADING LLC — $1.5m12.1k shares
TWO SIGMA SECURITIES, LLC — $687.0k5.6k shares
WOLVERINE TRADING, LLC — $436.0k3.5k shares
SIMPLEX TRADING, LLC — $233.0k1.9k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
BlackRock, Inc. 13G · institution filed 2025-04-17 8.4% 9.3m≈ $2.0bn 2025-04-17
VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 7.5% new 8.3m≈ $1.8bn 2026-04-30
VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 5.5% new 6.1m≈ $1.3bn 2026-04-29

Fell to 5% or below in the last year: PRICE T ROWE ASSOCIATES INC /MD/ (4.9%, 2026-08-14), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC)

Insider purchases and sales in Q3 2022

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
202Q4 20: 0 buyingQ4 20: 0 sellingQ1 21: 0 buyingQ1 21: 0 sellingQ1 21Q2 21: 0 buyingQ2 21: 0 sellingQ3 21: 0 buyingQ3 21: 0 sellingQ3 21Q4 21: 0 buyingQ4 21: 1 sellingQ1 22: 0 buyingQ1 22: 2 sellingQ1 22Q2 22: 0 buyingQ2 22: 2 sellingQ3 22: 0 buyingQ3 22: 1 sellingQ3 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20200—0——
Q1 20210—0——
Q2 20210—0——
Q3 20210—0——
Q4 20210—1$5.9m—
Q1 20220—2$2.4m—
Q2 20220—2$61.0m—
Q3 20220—1$789.1k—
DateInsiderTradeSharesPrice ValueTheir holding
2022-09-01 RING TIMOTHY M Director Sold 2,000 $125.02 $250.0k2.0k shares -8%
2022-08-01 RING TIMOTHY M Director Sold 2,000 $136.04 $272.1k2.0k shares -8%
2022-07-01 RING TIMOTHY M Director Sold 2,000 $133.47 $266.9k2.0k shares -8%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q3 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 VANGUARD GROUP INC 0.05% of their portfolio Valley Forge, PA 14,156,90214.2m $1.7bn $1.7bn 0.05% —
2 BlackRock Inc. 0.05% of their portfolio New York, NY 12,697,91612.7m $1.6bn $1.6bn 0.05% —
3 STATE STREET CORP 0.05% of their portfolio BOSTON, MA 5,982,4976.0m $734.0m $734.0m 0.05% —
4 VICTORY CAPITAL MANAGEMENT INC 0.46% of their portfolio San Antonio, TX 3,223,5183.2m $395.5m $395.5m 0.46% —
5 AMERICAN CENTURY COMPANIES INC 0.33% of their portfolio KANSAS CITY, MO 3,072,5353.1m $377.0m $377.0m 0.33% —
6 BANK OF AMERICA CORP /DE/ 0.05% of their portfolio CHARLOTTE, NC 2,934,8902.9m $360.1m $360.1m 0.05% —
7 GEODE CAPITAL MANAGEMENT, LLC 0.05% of their portfolio BOSTON, MA 2,441,9812.4m $299.3m $299.3m 0.05% —
8 DIMENSIONAL FUND ADVISORS LP 0.10% of their portfolio AUSTIN, TX 2,127,5712.1m $261.1m $261.1m 0.10% —
9 MORGAN STANLEY 0.03% of their portfolio NEW YORK, NY 1,951,2232.0m $239.4m $239.4m 0.03% —
10 Invesco Ltd. 0.08% of their portfolio ATLANTA, GA 1,949,4931.9m $239.2m $239.2m 0.08% —
11 Davis Selected Advisers 1.63% of their portfolio Tucson, AZ 1,871,1601.9m $229.6m $229.6m 1.63% —
12 Grantham, Mayo, Van Otterloo & Co. LLC 1.20% of their portfolio Boston, MA 1,698,6331.7m $208.4m $208.4m 1.20% —
13 PRICE T ROWE ASSOCIATES INC /MD/ 0.03% of their portfolio BALTIMORE, MD 1,692,9471.7m $207.8m $207.8m 0.03% —
14 NORTHERN TRUST CORP 0.04% of their portfolio CHICAGO, IL 1,428,3071.4m $175.2m $175.2m 0.04% —
15 Amundi 0.10% of their portfolio Paris, I0 1,369,8831.4m $170.4m $170.4m 0.10% —
16 LSV ASSET MANAGEMENT 0.37% of their portfolio CHICAGO, IL 1,293,5671.3m $158.7m $158.7m 0.37% —
17 JANUS HENDERSON GROUP PLC 0.06% of their portfolio LONDON, X0 1,255,8981.3m $154.1m $154.1m 0.06% —
18 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.08% of their portfolio NEW YORK, NY 1,202,1641.2m $147.5m $147.5m 0.08% —
19 PICTET ASSET MANAGEMENT SA 0.21% of their portfolio GENEVA 73, V8 1,141,1241.1m $140.0m $140.0m 0.21% —
20 Legal & General Group Plc 0.05% of their portfolio London, X0 1,136,7271.1m $139.5m $139.5m 0.05% —
21 Bank of New York Mellon Corp 0.03% of their portfolio NEW YORK, NY 1,133,4531.1m $139.1m $139.1m 0.03% —
22 NORGES BANK 0.03% of their portfolio OSLO, Q8 967,248967.2k $118.7m $118.7m 0.03% —
23 NORDEA INVESTMENT MANAGEMENT AB 0.18% of their portfolio STOCKHOLM, V7 902,507902.5k $113.2m $113.2m 0.18% —
24 FIRST TRUST ADVISORS LP 0.14% of their portfolio Wheaton, IL 893,485893.5k $109.6m $109.6m 0.14% —
25 RENAISSANCE TECHNOLOGIES LLC 0.15% of their portfolio NEW YORK, NY 871,900871.9k $107.0m $107.0m 0.15% —
26 AMERIPRISE FINANCIAL INC 0.04% of their portfolio MINNEAPOLIS, MN 868,553868.6k $106.9m $106.9m 0.04% —
27 Robeco Institutional Asset Management B.V. 0.34% of their portfolio ROTTERDAM, P7 852,937852.9k $104.6m $104.6m 0.34% —
28 California Public Employees Retirement System 0.09% of their portfolio Sacramento, CA 840,601840.6k $103.1m $103.1m 0.09% —
29 BESSEMER GROUP INC 0.23% of their portfolio WOODBRIDGE, NJ 730,796730.8k $89.7m $89.7m 0.23% —
30 AQR CAPITAL MANAGEMENT LLC 0.21% of their portfolio Greenwich, CT 692,113692.1k $84.9m $84.9m 0.21% —
31 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.03% of their portfolio SAN FRANCISCO, CA 668,964669.0k $82.1m $82.1m 0.03% —
32 DekaBank Deutsche Girozentrale 0.23% of their portfolio FRANKFURT, 2M 627,442627.4k $77.8m $77.8m 0.23% —
33 ALLIANCEBERNSTEIN L.P. 0.04% of their portfolio NASHVILLE, TN 626,186626.2k $76.8m $76.8m 0.04% —
34 GOLDMAN SACHS GROUP INC 0.02% of their portfolio NEW YORK, NY 614,800614.8k $75.4m $75.4m 0.02% —
35 AXA S.A. 0.14% of their portfolio PARIS, I0 594,070594.1k $72.9m $72.9m 0.14% —
36 DEUTSCHE BANK AG\ 0.04% of their portfolio FRANKFURT AM MAIN, 2M 590,957591.0k $72.5m $72.5m 0.04% —
37 Sumitomo Mitsui Trust Group, Inc. 0.06% of their portfolio CHIYODA-KU, TOKYO, M0 583,261583.3k $71.6m $71.6m 0.06% —
38 HSBC HOLDINGS PLC 0.12% of their portfolio LONDON, X0 552,785552.8k $68.2m $68.2m 0.12% —
39 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.03% of their portfolio Boston, MA 548,890548.9k $67.3m $67.3m 0.03% —
40 Swiss National Bank 0.04% of their portfolio ZURICH, V8 508,635508.6k $62.4m $62.4m 0.04% —
41 M&G INVESTMENT MANAGEMENT LTD 0.51% of their portfolio London, X0 495,127495.1k $60.9m $60.9m 0.51% —
42 CANADA LIFE ASSURANCE Co 0.16% of their portfolio WINNIPEG, A2 463,067463.1k $56.8m $56.8m 0.16% —
43 O'SHAUGHNESSY ASSET MANAGEMENT, LLC 1.05% of their portfolio Stamford, CT 456,543456.5k $56.0m $56.0m 1.05% —
44 INTECH INVESTMENT MANAGEMENT LLC 0.39% of their portfolio WEST PALM BEACH, FL 419,613419.6k $51.5m $51.5m 0.39% —
45 WESTFIELD CAPITAL MANAGEMENT CO LP 0.41% of their portfolio BOSTON, MA 418,132418.1k $51.3m $51.3m 0.41% —
46 FRANKLIN RESOURCES INC 0.03% of their portfolio San Mateo, CA 385,656385.7k $47.3m $47.3m 0.03% —
47 Nuveen Asset Management, LLC 0.02% of their portfolio CHICAGO, IL 382,826382.8k $47.0m $47.0m 0.02% —
48 Pacer Advisors, Inc. 0.31% of their portfolio Malvern, PA 361,656361.7k $44.4m $44.4m 0.31% —
49 FMR LLC 0.00% of their portfolio BOSTON, MA 347,711347.7k $42.7m $42.7m 0.00% —
50 UBS Group AG 0.02% of their portfolio ZURICH, V8 313,674313.7k $38.5m $38.5m 0.02% —
51 SCHRODER INVESTMENT MANAGEMENT GROUP 0.06% of their portfolio London, X0 310,347310.3k $38.1m $38.1m 0.06% —
52 JPMORGAN CHASE & CO 0.01% of their portfolio NEW YORK, NY 304,641304.6k $37.4m $37.4m 0.01% —
53 RHUMBLINE ADVISERS 0.06% of their portfolio BOSTON, MA 304,018304.0k $37.3m $37.3m 0.06% —
54 WEDGE CAPITAL MANAGEMENT L L P/NC 0.60% of their portfolio CHARLOTTE, NC 287,808287.8k $35.3m $35.3m 0.60% —
55 CREDIT SUISSE AG/ 0.04% of their portfolio ZURICH, V8 280,903280.9k $34.5m $34.5m 0.04% —
56 TOBAM 2.23% of their portfolio PARIS, I0 259,843259.8k $31.9m $31.9m 2.23% —
57 Allianz Asset Management GmbH 0.07% of their portfolio MUNICH, 2M 258,152258.2k $31.7m $31.7m 0.07% —
58 Railway Pension Investments Ltd 0.33% of their portfolio LONDON, X0 246,525246.5k $30.2m $30.2m 0.33% —
59 WELLS FARGO & COMPANY/MN 0.01% of their portfolio SAN FRANCISCO, CA 242,049242.0k $29.7m $29.7m 0.01% —
60 Mitsubishi UFJ Trust & Banking Corp 0.08% of their portfolio TOKYO, M0 239,651239.7k $29.4m $29.4m 0.08% —
61 AustralianSuper Pty Ltd 0.23% of their portfolio MELBOURNE, C3 236,088236.1k $29.0m $29.0m 0.23% —
62 ENVESTNET ASSET MANAGEMENT INC 0.02% of their portfolio Berwyn, PA 235,850235.8k $28.9m $28.9m 0.02% —
63 SEI INVESTMENTS CO 0.06% of their portfolio OAKS, PA 225,391225.4k $27.7m $27.7m 0.06% —
64 BNP PARIBAS FINANCIAL MARKETS 0.07% of their portfolio PARIS, I0 219,609219.6k $26.9m $26.9m 0.07% —
65 National Pension Service 0.06% of their portfolio JEONJU-SI, JEOLLABUK-DO, M5 215,450215.4k $26.8m $26.8m 0.06% —
66 BANK OF MONTREAL /CAN/ 0.01% of their portfolio TORONTO, A6 211,911211.9k $26.8m $26.8m 0.01% —
67 APG Asset Management N.V. 0.07% of their portfolio Amsterdam, P7 208,811208.8k $26.2m $26.2m 0.07% —
68 Brandywine Global Investment Management, LLC 0.24% of their portfolio PHILADELPHIA, PA 208,722208.7k $25.6m $25.6m 0.24% —
69 BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.10% of their portfolio Paris, I0 206,561206.6k $25.7m $25.7m 0.10% —
70 Retirement Systems of Alabama 0.11% of their portfolio MONTGOMERY, AL 201,231201.2k $24.7m $24.7m 0.11% —
71 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.04% of their portfolio WEST SACRAMENTO, CA 195,730195.7k $24.0m $24.0m 0.04% —
72 MACQUARIE GROUP LTD 0.03% of their portfolio Sydney, NSW 2000, C3 193,902193.9k $23.8m $23.8m 0.03% —
73 CHECK CAPITAL MANAGEMENT INC/CA 2.37% of their portfolio COSTA MESA, CA 178,707178.7k $21.9m $21.9m 2.37% —
74 SVB WEALTH LLC 0.32% of their portfolio BOSTON, MA 178,673178.7k $21.9m $21.9m 0.32% —
75 Galvin, Gaustad & Stein, LLC 2.29% of their portfolio Scottsdale, AZ 175,935175.9k $21.6m $21.6m 2.29% —
76 Swedbank AB 0.05% of their portfolio STOCKHOLM, V7 172,642172.6k $21.2m $21.2m 0.05% —
77 MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio NEW YORK, NY 169,938169.9k $20.9m $20.9m 0.03% —
78 Coho Partners, Ltd. 0.39% of their portfolio BERWYN, PA 169,281169.3k $20.8m $20.8m 0.39% —
79 PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio DES MOINES, IA 167,361167.4k $20.5m $20.5m 0.02% —
80 ROYAL BANK OF CANADA 0.01% of their portfolio TORONTO, A6 163,698163.7k $20.1m $20.1m 0.01% —
81 Bridgewater Associates, LP 0.10% of their portfolio Westport, CT 161,295161.3k $19.8m $19.8m 0.10% —
82 Skandinaviska Enskilda Banken AB (publ) 0.15% of their portfolio STOCKHOLM, V7 159,281159.3k $19.5m $19.5m 0.15% —
83 Aberdeen Group plc 0.06% of their portfolio EDINBURGH, X0 157,064157.1k $19.3m $19.3m 0.06% —
84 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.05% of their portfolio TALLAHASSEE, FL 155,216155.2k $19.0m $19.0m 0.05% —
85 NEW YORK STATE COMMON RETIREMENT FUND 0.03% of their portfolio ALBANY, NY 154,861154.9k $19.0m $19.0m 0.03% —
86 Bahl & Gaynor LLC 0.12% of their portfolio CINCINNATI, OH 150,843150.8k $18.5m $18.5m 0.12% —
87 GLENMEDE TRUST CO NA 0.11% of their portfolio PHILADELPHIA, PA 141,282141.3k $17.3m $17.3m 0.11% —
88 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.05% of their portfolio ALBANY, NY 141,223141.2k $17.3m $17.3m 0.05% —
89 Copeland Capital Management, LLC 0.56% of their portfolio Conshohocken, PA 139,295139.3k $17.1m $17.1m 0.56% —
90 BECKER CAPITAL MANAGEMENT INC 0.89% of their portfolio Portland, OR 137,718137.7k $16.9m $16.9m 0.89% —
91 Willis Investment Counsel 1.22% of their portfolio GAINESVILLE, GA 136,800136.8k $16.8m $16.8m 1.22% —
92 STOREBRAND ASSET MANAGEMENT AS 0.10% of their portfolio LYSAKER, Q8 136,331136.3k $16.7m $16.7m 0.10% —
93 STIFEL FINANCIAL CORP 0.03% of their portfolio ST. LOUIS, MO 136,180136.2k $16.7m $16.7m 0.03% —
94 Ensign Peak Advisors, Inc 0.04% of their portfolio SALT LAKE CITY, UT 133,351133.4k $16.4m $16.4m 0.04% —
95 TOCQUEVILLE ASSET MANAGEMENT L.P. 0.33% of their portfolio New York, NY 131,857131.9k $16.2m $16.2m 0.33% —
96 AVIVA PLC 0.09% of their portfolio LONDON, X0 130,784130.8k $16.0m $16.0m 0.09% —
97 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.01% of their portfolio Toronto, A6 120,167120.2k $14.8m $14.8m 0.01% —
98 Crossmark Global Holdings, Inc. 0.40% of their portfolio HOUSTON, TX 118,954119.0k $14.6m $14.6m 0.40% —
99 PRUDENTIAL FINANCIAL INC 0.02% of their portfolio NEWARK, NJ 117,274117.3k $14.5m $14.5m 0.02% —
100 Caisse de depot et placement du Quebec 0.04% of their portfolio Montreal, A8 113,629113.6k $13.9m $13.9m 0.04% —