Who owns Quest Diagnostics?What is institutional ownership? Institutional ownership is the share of a company's stock held by funds, banks and other investment managers, as they report it each quarter on Form 13F.
Institutions own 96.1% of Quest Diagnostics's shares, through 1,128 funds, banks and other managers that report their holdings to the SEC; individual investors and others hold the rest. The largest on 30 June 2026 were BlackRock, Inc. (8.4%), Vanguard Capital Management LLC (6.6%), Vanguard Portfolio Management LLC (5.6%).
- Institutions ownWhat is institutional ownership? Institutional ownership is the share of a company's stock held by funds, banks and other investment managers, as they report it each quarter on Form 13F.
- 96.1%
- Institutional holders
- 1,128
- The 10 largest hold
- 45.2%
- Free floatWhat is free float? Free float is the part of a company's shares that anyone can buy and sell: all its shares minus those held by insiders, founders and owners of over 5%.
- 99.2%
- Holdings as of
- 30 Jun 2026
Who owns the shares
Shares free to trade
Closely held shares belong to insiders, founders and owners of more than 5%, and seldom change hands. The free float is the rest: the shares anyone can buy and sell.
The largest shareholders
| # | Holder | Shares | Of the company | Value | Change last quarter (shares) |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 9,275,411 | 8.43% | 1.97B USD | +103,119 |
| 2 | Vanguard Capital Management LLC | 7,233,394 | 6.58% | 1.53B USD | +87,722 |
| 3 | Vanguard Portfolio Management LLC | 6,131,045 | 5.57% | 1.30B USD | +49,645 |
| 4 | State Street Corp | 5,516,643 | 5.02% | 1.17B USD | +135,822 |
| 5 | Price T Rowe Associates Inc | 5,444,986 | 4.95% | 1.15B USD | -853,001 |
| 6 | Boston Partners | 4,744,473 | 4.31% | 1.00B USD | +732,241 |
| 7 | JPMorgan Chase & Co | 3,520,438 | 3.20% | 748.59M USD | -326,018 |
| 8 | Geode Capital Management, LLC | 3,137,873 | 2.85% | 662.58M USD | +51,565 |
| 9 | Morgan Stanley | 2,460,497 | 2.24% | 521.50M USD | -19,223 |
| 10 | Edgepoint Investment Group Inc. | 2,247,568 | 2.04% | 476.37M USD | +3,699 |
| 11 | Dimensional Fund Advisors LP | 1,988,048 | 1.81% | 421.38M USD | +38,513 |
| 12 | Bank Of America Corp | 1,935,133 | 1.76% | 410.15M USD | +182,231 |
| 13 | Grantham, Mayo, Van Otterloo & Co. LLC | 1,888,207 | 1.72% | 400.21M USD | +5,183 |
| 14 | Wells Fargo & Company | 1,751,220 | 1.59% | 371.17M USD | -11,549 |
| 15 | Davis Selected Advisers | 1,555,612 | 1.41% | 329.78M USD | -62,201 |
| 16 | Victory Capital Management Inc | 1,550,556 | 1.41% | 328.64M USD | -295,780 |
| 17 | Norges Bank | 1,406,620 | 1.28% | 298.13M USD | New position |
| 18 | FMR LLC | 1,398,735 | 1.27% | 296.46M USD | +456,517 |
| 19 | Invesco Ltd. | 1,379,115 | 1.25% | 292.30M USD | -259,372 |
| 20 | Northern Trust Corp | 1,127,454 | 1.03% | 238.96M USD | +13,235 |
| 21 | Goldman Sachs Group Inc | 982,694 | 0.89% | 208.28M USD | -366,000 |
| 22 | UBS AM | 942,407 | 0.86% | 199.74M USD | +95,804 |
| 23 | UBS Group AG | 888,906 | 0.81% | 188.40M USD | +186,569 |
| 24 | American Century Companies Inc | 818,220 | 0.74% | 173.42M USD | -49,111 |
| 25 | M&g PLC | 795,650 | 0.72% | 168.68M USD | -9,691 |
All institutions last quarter
- Bought or added
- 675 · 121 new
- Sold or cut
- 433 · 79 sold out
- Net shares bought
- +3.04M · 644.69M USD
- Institutional ownership
- 93.3% → 96.1%
Biggest buyers last quarter
- Norges BankNew position
- Sixth Street Partners Management Company, L.P.New position
- Boston Partners+732,241
- FMR LLC+456,517
- Balyasny Asset Management L.P.+272,473
Biggest sellers last quarter
- Price T Rowe Associates Inc-853,001
- Qube Research & Technologies Ltd-391,316
- Goldman Sachs Group Inc-366,000
- JPMorgan Chase & Co-326,018
- Victory Capital Management Inc-295,780
From the holders' 13F filings with the SEC for the quarter to 30 Jun 2026, filed up to 45 days after it; the buyers and sellers are among the 100 largest holders.
Common questions about Quest Diagnostics's shareholders
Source: Financial Modeling Prep
