DaveManuel.com · Institutional Ownership · Who Owns It
QUEST DIAGNOSTICS INC (DGX)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
1,119
Reporting holders
$22.4B
Reported value
95.1%
Of shares outstanding
0.4%
Calls
0.3%
Puts
+45
Holder change
Institutions report 104,972,934 shares against 110,373,360 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $2.0B | 9,275,411 | 0.03% | 8q | +1.1%+$21.9M |
| VANGUARD CAPITAL MANAGEMENT LLC | $1.5B | 7,233,394 | 0.03% | 2q | +1.2%+$18.6M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $1.3B | 6,131,045 | 0.06% | 2q | +0.8%+$10.5M |
| STATE STREET CORP | $1.2B | 5,516,643 | 0.03% | 31q | +2.5%+$28.8M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $1.2B | 5,444,986 | 0.12% | 31q | -13.5%-$180.8M |
| Boston Partners | $1.0B | 4,744,473 | 0.89% | 6q | +18.3%+$155.0M |
| JPMORGAN CHASE & CO | $748.6M | 3,520,438 | 0.04% | 31q | -8.5%-$69.3M |
| GEODE CAPITAL MANAGEMENT, LLC | $662.6M | 3,137,873 | 0.04% | 31q | +1.7%+$10.9M |
| MORGAN STANLEY | $521.5M | 2,460,497 | 0.03% | 35q | -0.8%-$4.1M |
| EdgePoint Investment Group Inc. | $476.4M | 2,247,568 | 3.60% | 5q | HELD |
| DIMENSIONAL FUND ADVISORS LP | $421.4M | 1,988,048 | 0.08% | 31q | +2.0%+$8.2M |
| BANK OF AMERICA CORP /DE/ | $410.2M | 1,935,133 | 0.03% | 31q | +10.4%+$38.6M |
| Grantham, Mayo, Van Otterloo & Co. LLC | $400.2M | 1,888,207 | 0.90% | 26q | HELD |
| WELLS FARGO & COMPANY/MN | $371.2M | 1,751,220 | 0.06% | 31q | -0.7%-$2.4M |
| Davis Selected Advisers | $329.8M | 1,555,612 | 1.42% | 31q | -3.8%-$13.2M |
| VICTORY CAPITAL MANAGEMENT INC | $328.6M | 1,550,556 | 0.18% | 31q | -16.0%-$62.7M |
| NORGES BANK | $298.1M | 1,406,620 | 0.03% | 32q | +6.3%+$17.8M |
| FMR LLC | $296.5M | 1,398,735 | 0.01% | 31q | +48.5%+$96.8M |
| Invesco Ltd. | $292.3M | 1,379,115 | 0.02% | 31q | -15.8%-$55.0M |
| NORTHERN TRUST CORP | $239.0M | 1,127,454 | 0.03% | 31q | +1.2%+$2.8M |
| GOLDMAN SACHS GROUP INC | $208.3M | 982,694 | 0.02% | 31q | -27.1%-$77.6M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $199.7M | 942,407 | 0.04% | 31q | +11.3%+$20.3M |
| UBS Group AG | $188.4M | 888,906 | 0.02% | 31q | +26.6%+$39.5M |
| AMERICAN CENTURY COMPANIES INC | $173.4M | 818,220 | 0.08% | 31q | -5.7%-$10.4M |
| M&G PLC | $168.7M | 795,650 | 0.84% | 10q | -1.2%-$2.1M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $164.0M | 773,711 | 0.02% | 31q | +1.7%+$2.7M |
| AMERIPRISE FINANCIAL INC | $161.1M | 759,975 | 0.03% | 31q | -5.9%-$10.1M |
| Legal & General Group Plc | $152.0M | 717,085 | 0.03% | 31q | -2.7%-$4.1M |
| DekaBank Deutsche Girozentrale | $146.2M | 748,680 | 0.25% | 31q | HELD |
| Bank of New York Mellon Corp | $133.4M | 629,339 | 0.02% | 31q | -4.1%-$5.6M |
| VANGUARD FIDUCIARY TRUST CO | $131.8M | 621,639 | 0.03% | 2q | HELD |
| DEUTSCHE BANK AG\ | $124.2M | 585,895 | 0.04% | 34q | +6.4%+$7.4M |
| ALLIANCEBERNSTEIN L.P. | $122.7M | 625,894 | 0.04% | 31q | -8.1%-$10.8M |
| Nuveen, LLC | $119.5M | 563,830 | 0.03% | 6q | +21.1%+$20.9M |
| PRINCIPAL FINANCIAL GROUP INC | $109.6M | 517,225 | 0.05% | 31q | -1.7%-$1.9M |
| RAYMOND JAMES FINANCIAL INC | $107.2M | 505,762 | 0.03% | 7q | +10.3%+$10.0M |
| Amundi | $105.7M | 498,751 | 0.03% | 21q | +22.1%+$19.2M |
| Woodline Partners LP | $103.0M | 485,841 | 0.32% | 10q | -18.2%-$22.9M |
| FIDUCIARY MANAGEMENT INC /WI/ | $102.5M | 483,557 | 1.46% | 10q | -32.9%-$50.3M |
| Artemis Investment Management LLP | $99.2M | 467,921 | 0.88% | 5q | +4.6%+$4.4M |
| CRAWFORD INVESTMENT COUNSEL INC | $97.5M | 460,081 | 1.62% | 10q | -5.4%-$5.6M |
| BARCLAYS PLC | $95.1M | 448,726 | 0.02% | 31q | -20.6%-$24.7M |
| ENVESTNET ASSET MANAGEMENT INC | $90.8M | 428,564 | 0.02% | 31q | +3.9%+$3.4M |
| SCHRODER INVESTMENT MANAGEMENT GROUP | $88.8M | 417,715 | 0.06% | 31q | +41.6%+$26.1M |
| BNP PARIBAS FINANCIAL MARKETS | $83.8M | 395,245 | 0.03% | 31q | +46.2%+$26.5M |
| Pacer Advisors, Inc. | $81.0M | 381,995 | 0.21% | 25q | -10.3%-$9.3M |
| M.D. Sass, LLC | $76.4M | 360,453 | 4.99% | 2q | +20.4%+$12.9M |
| ACADIAN ASSET MANAGEMENT LLC | $73.4M | 346,489 | 0.09% | 31q | +44.7%+$22.7M |
| Qube Research & Technologies Ltd | $72.8M | 343,398 | 0.07% | 12q | -53.3%-$82.9M |
| MACKENZIE FINANCIAL CORP | $70.6M | 333,295 | 0.07% | 31q | +163.5%+$43.8M |
| Advisors Capital Management, LLC | $69.4M | 327,575 | 0.74% | 31q | HELD |
| CITIGROUP INC | $66.9M | 315,584 | 0.02% | 31q | +9.9%+$6.0M |
| Swiss National Bank | $65.7M | 309,900 | 0.03% | 31q | -5.1%-$3.5M |
| FIRST TRUST ADVISORS LP | $61.7M | 290,970 | 0.04% | 31q | -11.6%-$8.1M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $59.4M | 280,319 | 0.06% | 31q | +21.4%+$10.5M |
| CITADEL ADVISORS LLC | $58.8M incl. $30.5M options CALL+PUT | 133,211 | 0.01% | 31q | -61.6%-$94.4M |
| Balyasny Asset Management L.P. | $58.4M | 275,371 | 0.07% | 4q | +9402.1%+$57.8M |
| MARSHALL WACE, LLP | $57.2M | 269,760 | 0.05% | 12q | +34.7%+$14.7M |
| CANADA LIFE ASSURANCE Co | $57.0M | 269,711 | 0.09% | 31q | -11.8%-$7.6M |
| Mitsubishi UFJ Asset Management Co., Ltd. | $56.9M | 268,354 | 0.03% | 31q | +6.7%+$3.6M |
| RHUMBLINE ADVISERS | $56.7M | 267,727 | 0.04% | 31q | +1.7%+$928.3K |
| Sumitomo Mitsui Trust Group, Inc. | $54.8M | 258,597 | 0.03% | 31q | -2.3%-$1.3M |
| VANGUARD ASSET MANAGEMENT, Ltd | $53.7M | 253,146 | 0.04% | 2q | +11.7%+$5.6M |
| Quantinno Capital Management LP | $53.6M | 252,924 | 0.06% | 19q | +9.5%+$4.6M |
| FIL Ltd | $53.4M | 251,976 | 0.04% | 4q | +191.1%+$35.1M |
| BANK OF MONTREAL /CAN/ | $51.6M | 243,647 | 0.02% | 31q | +15.8%+$7.1M |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. | $51.5M | 242,907 | 0.39% | 9q | -5.2%-$2.8M |
| Clark Capital Management Group, Inc. | $51.3M | 241,846 | 0.28% | 2q | +2.7%+$1.4M |
| Vanguard Global Advisers, LLC | $51.0M | 240,742 | 0.02% | 2q | -0.7%-$377.9K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $49.3M | 232,797 | 0.07% | 3q | +9.7%+$4.4M |
| HSBC HOLDINGS PLC | $47.8M | 224,986 | 0.02% | 31q | +15.3%+$6.3M |
| Eurizon Capital SGR S.p.A. | $47.2M | 222,564 | 0.13% | 3q | -7.6%-$3.9M |
| ROYAL BANK OF CANADA | $46.5M | 219,613 | 0.01% | 31q | +10.6%+$4.5M |
| VOYA INVESTMENT MANAGEMENT LLC | $44.8M | 211,496 | 0.04% | 31q | +13.6%+$5.4M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $43.7M incl. $40.5M options CALL+PUT | 15,320 | 0.00% | 31q | -17.3%-$9.1M |
| PFA Pension, Forsikringsaktieselskab | $43.6M | 205,613 | 0.11% | new | NEW |
| Integral Health Asset Management, LLC | $42.4M | 200,000 | 1.67% | 5q | +233.3%+$29.7M |
| California Public Employees Retirement System | $41.6M | 196,151 | 0.02% | 31q | -17.5%-$8.8M |
| EASTERN BANK | $40.3M | 189,969 | 0.62% | 3q | +143.6%+$23.7M |
| CONNING INC. | $39.6M | 186,734 | 1.19% | 3q | +6.2%+$2.3M |
| SEB Asset Management AB | $38.8M | 182,906 | 0.15% | 2q | +30.7%+$9.1M |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $37.0M | 174,776 | 0.03% | 31q | +7.7%+$2.7M |
| Focus Partners Wealth | $34.6M | 163,327 | 0.04% | 10q | +8.3%+$2.6M |
| SG Americas Securities, LLC | $34.5M | 162,837 | 0.02% | 6q | -25.1%-$11.5M |
| STOREBRAND ASSET MANAGEMENT AS | $34.1M | 160,970 | 0.08% | 26q | +14.5%+$4.3M |
| COOKSON PEIRCE & CO INC | $33.0M | 155,589 | 1.09% | 6q | HELD |
| CREDIT AGRICOLE S A | $32.9M | 155,438 | 0.07% | 11q | +4.6%+$1.5M |
| BRAUN STACEY ASSOCIATES INC | $32.7M | 154,396 | 0.93% | 5q | -1.6%-$516.3K |
| Willis Investment Counsel | $32.1M | 151,500 | 1.53% | 31q | HELD |
| JANE STREET GROUP, LLC | $31.0M incl. $29.2M options CALL+PUT | 8,126 | 0.00% | 31q | +26.4%+$6.5M |
| Copeland Capital Management, LLC | $30.7M | 144,784 | 0.63% | 31q | -6.8%-$2.2M |
| LPL Financial LLC | $30.3M | 143,079 | 0.01% | 31q | +29.2%+$6.9M |
| APG Asset Management N.V. | $27.9M | 150,334 | 0.07% | 31q | -2.3%-$668.3K |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $26.9M | 126,888 | 0.18% | 22q | +10.6%+$2.6M |
| Achmea Investment Management B.V. | $26.4M | 124,786 | 0.66% | 18q | -9.0%-$2.6M |
| &PARTNERS | $26.4M | 124,363 | 0.11% | 9q | +1.8%+$462.5K |
| STIFEL FINANCIAL CORP | $26.1M | 123,220 | 0.02% | 31q | +10.0%+$2.4M |
| FRANKLIN RESOURCES INC | $25.6M | 120,973 | 0.01% | 31q | -0.6%-$147.1K |
| Candriam S.C.A. | $25.5M | 120,238 | 0.11% | 31q | +15.5%+$3.4M |
| Squarepoint Ops LLC | $25.4M incl. $381.5K options CALL | 117,831 | 0.03% | 23q | -65.9%-$49.1M |
Showing the largest 100 of 1,120 reported holders. The count of 1,119 above leaves out 1 position whose reported value failed our price check; it is listed here as filed.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-06 | 2026-10-06 | Directors or officers departed or appointed | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-28 | PREVOZNIK MICHAEL E | SVP & General Counsel | Sold | 22,677 | $5.5M ×3 |
| 2026-09-01 | Davis J. E. | CEO and President | Sold | 10,000 | $2.4M |
| 2026-06-01 | Davis J. E. | CEO and President | Sold | 10,000 | $1.9M |
| 2026-06-04 | KUPPUSAMY KARTHIK | SVP, Clinical Solutions | Sold | 8,147 | $1.6M |
| 2026-07-28 | DELANEY MARK E | SVP & Chief Commercial Officer | Sold | 1,600 | $376.3K |
| 2026-10-26 | PFEIFFER GARY M | Director | Sold | 1,203 | $292.3K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 384 | $1.1B | 4,865,511 | 42 | 110 | 115 | 0.0% |
| Q2 2026 | 1,119 | $22.4B | 104,972,934 | 113 | 399 | 319 | 0.7% |
| Q1 2026 | 1,074 | $20.2B | 102,676,092 | 108 | 328 | 367 | 0.7% |
| Q4 2025 | 1,055 | $18.6B | 106,491,751 | 96 | 319 | 325 | 0.7% |
| Q3 2025 | 1,012 | $21.0B | 109,277,632 | 105 | 337 | 314 | 1.0% |
| Q2 2025 | 998 | $19.7B | 108,394,943 | 104 | 343 | 315 | 1.1% |
| Q1 2025 | 975 | $17.7B | 103,530,132 | 131 | 299 | 315 | 1.2% |
| Q4 2024 | 903 | $15.1B | 99,467,637 | 66 | 292 | 276 | 0.6% |
| Q3 2024 | 855 | $15.5B | 99,276,597 | 85 | 266 | 294 | 0.8% |
| Q2 2024 | 843 | $13.7B | 98,994,904 | 83 | 258 | 282 | 1.0% |
| Q1 2024 | 821 | $14.2B | 104,843,044 | 75 | 254 | 294 | 1.5% |
| Q4 2023 | 836 | $14.2B | 101,394,416 | 60 | 231 | 312 | 1.8% |
| Q3 2023 | 804 | $12.2B | 98,618,768 | 61 | 215 | 319 | 1.4% |
| Q2 2023 | 827 | $14.1B | 99,673,745 | 65 | 233 | 296 | 0.9% |
| Q1 2023 | 837 | $14.5B | 101,485,612 | 51 | 244 | 309 | 0.8% |
| Q4 2022 | 891 | $15.7B | 99,052,732 | 117 | 237 | 317 | 1.4% |
| Q3 2022 | 794 | $38.0B | 309,097,394 | 39 | 222 | 300 | 0.3% |
| Q2 2022 | 840 | $43.8B | 327,999,952 | 75 | 243 | 287 | 0.4% |
| Q1 2022 | 843 | $36.2B | 262,708,645 | 74 | 235 | 303 | 0.6% |
| Q4 2021 | 900 | $47.0B | 270,336,869 | 88 | 250 | 295 | 1.0% |
| Q3 2021 | 837 | $31.5B | 214,253,086 | 90 | 270 | 264 | 1.2% |
| Q2 2021 | 806 | $30.4B | 228,603,898 | 61 | 268 | 260 | 0.9% |
| Q1 2021 | 803 | $37.3B | 289,800,287 | 75 | 262 | 267 | 0.3% |
| Q4 2020 | 808 | $29.8B | 247,405,116 | 86 | 260 | 234 | 0.5% |
| Q3 2020 | 757 | $28.5B | 247,075,273 | 78 | 211 | 261 | 0.7% |
| Q2 2020 | 750 | $32.1B | 280,162,894 | 118 | 203 | 283 | 0.5% |
| Q1 2020 | 711 | $39.8B | 494,869,612 | 106 | 244 | 229 | 0.3% |
| Q4 2019 | 711 | $27.4B | 255,728,009 | 57 | 228 | 223 | 0.3% |
| Q3 2019 | 677 | $26.7B | 248,351,965 | 61 | 229 | 193 | 0.3% |
| Q2 2019 | 653 | $19.3B | 180,113,258 | 69 | 210 | 218 | 0.5% |
| Q1 2019 | 653 | $18.9B | 208,910,985 | 83 | 217 | 188 | 0.7% |
| Q4 2018 | 626 | $22.3B | 267,453,251 | 8 | 11 | 13 | 0.3% |