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 |
|---|---|---|---|---|---|---|
| Doherty Catherine T. | EVP | GRANT | $1M+ | 11K | $204.86 | Mar 6, 2026 |
| Doherty Catherine T. | EVP | SELL | $1M+ | 6K | $206.21 | Mar 6, 2026 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $500K+ | 4K | $206.21 | Mar 6, 2026 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | GRANT | $1M+ | 7K | $204.86 | Mar 6, 2026 |
| Plewman Patrick | SVP for Diagnostic… | GRANT | $1M+ | 6K | $204.86 | Mar 6, 2026 |
| Plewman Patrick | SVP for Diagnostic… | SELL | $500K+ | 3K | $206.21 | Mar 6, 2026 |
| KUPPUSAMY KARTHIK | SVP | SELL | $500K+ | 3K | $204.86 | Mar 6, 2026 |
| KUPPUSAMY KARTHIK | SVP | GRANT | $1M+ | 6K | $204.86 | Mar 6, 2026 |
| Doherty Catherine T. | EVP | SELL | $100K–$500K | 632 | $207.73 | Mar 4, 2026 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $100K–$500K | 526 | $207.73 | Mar 4, 2026 |
| Davis J. E. | CEO and President | SELL | $1M+ | 10K | $212.52 | Mar 4, 2026 |
| Plewman Patrick | SVP for Diagnostic… | SELL | $50K–$100K | 410 | $207.73 | Mar 4, 2026 |
| Plewman Patrick | SVP for Diagnostic… | GRANT | N/A | 2K | — | Feb 20, 2026 |
| Plewman Patrick | SVP for Diagnostic… | SELL | $100K–$500K | 958 | $204.83 | Feb 20, 2026 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | GRANT | N/A | 2K | — | Feb 20, 2026 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $100K–$500K | 1K | $204.83 | Feb 20, 2026 |
| Doherty Catherine T. | EVP | SELL | $100K–$500K | 1K | $204.83 | Feb 20, 2026 |
| Doherty Catherine T. | EVP | GRANT | N/A | 3K | — | Feb 20, 2026 |
| Doherty Catherine T. | EVP | SELL | $1M+ | 26K | $206.15 | Feb 17, 2026 |
| Doherty Catherine T. | EVP | EXERCISE | $1M+ | 26K | $112.17 | Feb 17, 2026 |
| Plewman Patrick | SVP for Diagnostic… | GRANT | $1K–$15K | 48 | $183.51 | Feb 12, 2026 |
| Plewman Patrick | SVP for Diagnostic… | EXERCISE | $500K+ | 6K | $121.81 | Feb 12, 2026 |
| Plewman Patrick | SVP for Diagnostic… | SELL | $1M+ | 6K | $204.00 | Feb 12, 2026 |
| Davis J. E. | CEO and President | EXERCISE | $1M+ | 55K | $95.80 | Nov 28, 2025 |
| Davis J. E. | CEO and President | SELL | $1M+ | 55K | $192.22 | Nov 28, 2025 |
| Gregg Vicky B | Director | SELL | $100K–$500K | 1K | $191.76 | Nov 28, 2025 |
| DELANEY MARK E | SVP & Chief Commer… | EXERCISE | $1M+ | 8K | $144.46 | Nov 20, 2025 |
| DELANEY MARK E | SVP & Chief Commer… | SELL | $1M+ | 8K | $187.35 | Nov 20, 2025 |
| PFEIFFER GARY M | Director | SELL | $100K–$500K | 1K | $182.40 | Oct 24, 2025 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | EXERCISE | $15K–$50K | 227 | $103.57 | Sep 30, 2025 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $15K–$50K | 227 | $188.13 | Sep 30, 2025 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | EXERCISE | $1M+ | 28K | $103.57 | Sep 25, 2025 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $1M+ | 28K | $187.12 | Sep 25, 2025 |
| Plewman Patrick | SVP for Diagnostic… | SELL | $100K–$500K | 2K | $185.00 | Aug 25, 2025 |
| KUPPUSAMY KARTHIK | SVP | SELL | $1M+ | 10K | $167.95 | Aug 1, 2025 |
| KUPPUSAMY KARTHIK | SVP | EXERCISE | $500K+ | 8K | $102.77 | Aug 1, 2025 |
| DELANEY MARK E | SVP & Chief Commer… | SELL | $100K–$500K | 2K | $175.51 | May 14, 2025 |
| Davis J. E. | CEO and President | SELL | $1M+ | 39K | $168.46 | Apr 5, 2025 |
| KUPPUSAMY KARTHIK | SVP | SELL | $100K–$500K | 3K | $170.00 | Apr 5, 2025 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $500K+ | 5K | $170.00 | Mar 20, 2025 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $50K–$100K | 528 | $172.61 | Feb 28, 2025 |
| Doherty Catherine T. | EVP | SELL | $100K–$500K | 824 | $172.61 | Feb 28, 2025 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $100K–$500K | 604 | $170.99 | Feb 21, 2025 |
| Plewman Patrick | SVP for Diagnostic… | SELL | $50K–$100K | 320 | $169.71 | Feb 21, 2025 |
| Doherty Catherine T. | EVP | SELL | $100K–$500K | 1K | $170.51 | Feb 21, 2025 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | SELL | $1M+ | 35K | $163.07 | Dec 2, 2024 |
| PREVOZNIK MICHAEL E | SVP & General Coun… | EXERCISE | $1M+ | 35K | $86.63 | Dec 2, 2024 |
| Doherty Catherine T. | EVP | EXERCISE | $1M+ | 33K | $103.57 | Dec 2, 2024 |
| Doherty Catherine T. | EVP | SELL | $1M+ | 33K | $162.99 | Dec 2, 2024 |
| DEPPE MICHAEL J | SVP | SELL | $1M+ | 19K | $154.05 | Nov 7, 2024 |
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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