DGX
QUEST DIAGNOSTICS INC
Services-Medical LaboratoriesNYSELarge accelerated filer
Total Trades
102
Buys
0
Sells
64
Largest Trade
N/A
Insiders
11
Institutional Funds
934
Inst. Value
$1M+
Activist Filings
9
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| DEPPE MICHAEL J | SVP | EXERCISE | $1M+ | 19K | $68.66 | Nov 7, 2024 |
| KUPPUSAMY KARTHIK | SVP | SELL | $100K–$500K | 2K | $156.92 | Oct 30, 2024 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | EXERCISE | $1M+ | 33K | $95.80 | Sep 3, 2024 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $1M+ | 33K | $154.97 | Sep 3, 2024 |
| KUPPUSAMY KARTHIK | SVP | SELL | $100K–$500K | 2K | $153.26 | Aug 29, 2024 |
| KUPPUSAMY KARTHIK | SVP | SELL | $100K–$500K | 2K | $140.00 | May 1, 2024 |
| Doherty Catherine T. | EVP | SELL | $500K+ | 7K | $126.45 | Mar 1, 2024 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $500K+ | 6K | $125.88 | Mar 1, 2024 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $50K–$100K | 661 | $126.14 | Feb 23, 2024 |
| Gregg Vicky B | Director | SELL | $100K–$500K | 3K | $126.64 | Feb 23, 2024 |
| Doherty Catherine T. | EVP | SELL | $100K–$500K | 821 | $126.14 | Feb 23, 2024 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $500K+ | 5K | $140.55 | Mar 8, 2023 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | GRANT | $1M+ | 9K | $147.86 | Mar 8, 2023 |
| Doherty Catherine T. | SVP | SELL | $500K+ | 5K | $140.55 | Mar 8, 2023 |
| Doherty Catherine T. | SVP | GRANT | $1M+ | 10K | $147.86 | Mar 8, 2023 |
| Doherty Catherine T. | SVP | SELL | $100K–$500K | 717 | $140.63 | Mar 6, 2023 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $50K–$100K | 593 | $138.54 | Mar 3, 2023 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $100K–$500K | 1K | $141.42 | Feb 27, 2023 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | GRANT | N/A | 2K | — | Feb 27, 2023 |
| Doherty Catherine T. | SVP | SELL | $100K–$500K | 2K | $141.42 | Feb 27, 2023 |
| Doherty Catherine T. | SVP | GRANT | N/A | 4K | — | Feb 27, 2023 |
| RING TIMOTHY M | Director | SELL | $100K–$500K | 2K | $152.50 | Dec 5, 2022 |
| RING TIMOTHY M | Director | EXERCISE | $100K–$500K | 2K | $57.39 | Dec 5, 2022 |
| Doherty Catherine T. | SVP | SELL | $1M+ | 41K | $149.18 | Nov 29, 2022 |
| Doherty Catherine T. | SVP | EXERCISE | $1M+ | 41K | $86.63 | Nov 29, 2022 |
| RING TIMOTHY M | Director | EXERCISE | $100K–$500K | 2K | $61.07 | Nov 2, 2022 |
| RING TIMOTHY M | Director | SELL | $100K–$500K | 2K | $144.06 | Nov 2, 2022 |
| DEPPE MICHAEL J | VP | SELL | $1M+ | 15K | $145.00 | Oct 27, 2022 |
| DEPPE MICHAEL J | VP | EXERCISE | $500K+ | 15K | $53.79 | Oct 27, 2022 |
| RING TIMOTHY M | Director | SELL | $100K–$500K | 2K | $123.39 | Oct 4, 2022 |
| RING TIMOTHY M | Director | EXERCISE | $100K–$500K | 2K | $61.23 | Oct 4, 2022 |
| RING TIMOTHY M | Director | SELL | $100K–$500K | 2K | $125.02 | Sep 6, 2022 |
| RING TIMOTHY M | Director | EXERCISE | $100K–$500K | 2K | $61.23 | Sep 6, 2022 |
| RING TIMOTHY M | Director | SELL | $100K–$500K | 2K | $136.04 | Aug 2, 2022 |
| RING TIMOTHY M | Director | EXERCISE | $100K–$500K | 2K | $60.85 | Aug 2, 2022 |
| RING TIMOTHY M | Director | EXERCISE | $100K–$500K | 2K | $57.46 | Jul 5, 2022 |
| RING TIMOTHY M | Director | SELL | $100K–$500K | 2K | $133.47 | Jul 5, 2022 |
| RUSCKOWSKI STEPHEN H | Chairman | SELL | $1M+ | 25K | $140.89 | May 26, 2022 |
| RUSCKOWSKI STEPHEN H | Chairman | EXERCISE | $1M+ | 25K | $93.46 | May 26, 2022 |
| RUSCKOWSKI STEPHEN H | Chairman | SELL | $1M+ | 360K | $140.13 | May 25, 2022 |
| RUSCKOWSKI STEPHEN H | Chairman | EXERCISE | $1M+ | 360K | $94.21 | May 25, 2022 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | EXERCISE | $1M+ | 51K | $66.51 | May 19, 2022 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $1M+ | 51K | $139.97 | May 19, 2022 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $500K+ | 6K | $135.21 | Mar 9, 2022 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | GRANT | $1M+ | 12K | $130.09 | Mar 9, 2022 |
| Doherty Catherine T. | SVP | SELL | $500K+ | 7K | $135.21 | Mar 9, 2022 |
| Doherty Catherine T. | SVP | GRANT | $1M+ | 13K | $130.09 | Mar 9, 2022 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $50K–$100K | 661 | $130.00 | Mar 2, 2022 |
| Doherty Catherine T. | SVP | SELL | $100K–$500K | 3K | $126.26 | Mar 1, 2022 |
| Doherty Catherine T. | SVP | GRANT | N/A | 3K | — | Mar 1, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 934 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| STATE STREET CORP | 5.4M | $1M+ | SH |
| Boston Partners | 3.0M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 2.7M | $1M+ | SH |
| VICTORY CAPITAL MANAGEMENT INC | 2.0M | $1M+ | SH |
| EdgePoint Investment Group Inc. | 1.7M | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 1.6M | $1M+ | SH |
| DAVIS SELECTED ADVISERS | 1.6M | $1M+ | SH |
| NORGES BANK | 1.3M | $1M+ | SH |
| FIDUCIARY MANAGEMENT INC /WI/ | 1.0M | $1M+ | SH |
| M&G Plc | 945K | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 871K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 751K | $1M+ | SH |
| ALLIANCEBERNSTEIN L.P. | 632K | $1M+ | SH |
| Squarepoint Ops LLC | 566K | $1M+ | SH |
| Artemis Investment Management LLP | 461K | $1M+ | SH |
| Pacer Advisors, Inc. | 448K | $1M+ | SH |
| CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM | 350K | $1M+ | SH |
| ENVESTNET ASSET MANAGEMENT INC | 334K | $1M+ | SH |
| CANADA LIFE ASSURANCE Co | 319K | $1M+ | SH |
| Advisors Capital Management, LLC | 314K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
T. Rowe Price Associates, Inc.
SC 13G/A · Aug 14, 2025
6.5%
7.2M shares
T. Rowe Price Associates, Inc.
SC 13G · May 14, 2025
5.4%
6.0M shares
SC 13G/A · Apr 17, 2025
8.4%
9.3M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
12.1%
13.6M shares
STATE STREET CORPORATION I.R.S. IDENTIFICATION NO. OF THE ABOVE PERSON 04-2456637
SC 13G/A · Jan 25, 2024
4.8%
0 shares
SC 13G/A · Jan 24, 2024
9.4%
10.6M shares
SC 13G/A · Jan 23, 2023
10.9%
12.4M shares
SC 13G/A · Apr 8, 2022
10.7%
12.8M shares
STATE STREET CORPORATION I.R.S. IDENTIFICATION NO. OF THE ABOVE PERSON 04-2456637
SC 13G · Feb 10, 2022
5.1%
0 shares