Institutional Ownership
Quest Diagnostics Inc
CUSIP 74834L100COMDGXQ1 2026
13D / 13G Filings
18
Schedule 13D/13G on record
Beneficial Filers
6
Distinct reporting persons
Largest Stake
12.3%
Max % of class reported
Institutional Holders
1,050
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
18 filings · latest Aug 14, 2025
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Aug 14, 2025 | T. Rowe Price Associates, Inc. | 13G/A | 6.5% | 7.21M | SEC |
| 2 | May 14, 2025 | T. Rowe Price Associates, Inc. | 13G | 5.4% | 6.00M | SEC |
| 3 | Apr 17, 2025 | Blackrock, Inc. | 13G/A | 8.4% | 9.31M | SEC |
| 4 | Feb 13, 2024 | Vanguard Group Inc | 13G/A | 12.1% | 13.58M | SEC |
| 5 | Jan 25, 2024 | State Street Corp | 13G/A | 4.8% | — | SEC |
| 6 | Jan 24, 2024 | Blackrock Inc. | 13G/A | 9.4% | 10.58M | SEC |
| 7 | Feb 9, 2023 | Vanguard Group Inc | 13G/A | 12.3% | 13.97M | SEC |
| 8 | Feb 7, 2023 | State Street Corp | 13G/A | 5.2% | — | SEC |
| 9 | Jan 23, 2023 | Blackrock Inc. | 13G/A | 10.9% | 12.39M | SEC |
| 10 | Apr 8, 2022 | Blackrock Inc. | 13G/A | 10.7% | 12.81M | SEC |
8 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Quest Diagnostics Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 9.17M | $1.80B |
| 2 | State Street Corp | 5.38M | $1.05B |
| 3 | Boston Partners | 4.01M | $786.65M |
| 4 | Jpmorgan Chase & Co | 3.85M | $758.37M |
| 5 | Geode Capital Management, LLC | 3.09M | $602.66M |
| 6 | Morgan Stanley | 2.48M | $485.98M |
| 7 | Edgepoint Investment Group Inc. | 2.24M | $439.75M |
| 8 | Dimensional Fund Advisors LP | 1.95M | $382.09M |
| 9 | Grantham, Mayo, Van Otterloo & Co. LLC | 1.88M | $369.04M |
| 10 | Victory Capital Management Inc | 1.85M | $361.84M |