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Of the 13 tracked institutions holding DGX, 7 have a 3-year clone track record — 5 of them beat the S&P. Average holder's clone alpha: +3.2pt. It's a gauge of who owns the name, not just how many.
Among the 13 tracked institutional investors we monitor, DGX (QUEST DIAGNOSTICS INC) is held with a combined value of $7.27B across 38,755,715 shares. The largest holder is VANGUARD GROUP INC with a position worth $2.50B (0.04% of their portfolio). 4 funds increased their holdings. 9 funds reduced their position.
Total Institutional Value
$7.27B
Total Shares Held
38,755,715
Institutional Holders
13
% of Shares Outstanding
35.1%
of 110.37M shares · SEC 2026-07-15
Days to Cover
4.3-6.0%
3.51M shares short · FINRA 2026-07-15
Tracked 13F institutions hold 35.1% of DGX's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-07-15), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
0
$0
1
$1.94M
Total Transactions
1
Last 12 months
| Date | Insider | Code | Type | Shares | Value |
|---|---|---|---|---|---|
| Jun 1, 2026 | J. E. Davis | S | Sale | 10,000 | $1.94M |
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $2.50B | 0.04% | +1.0% |
| 2 | BlackRock, Inc. | $1.80B | 0.03% | -3.0% |
| 3 | PRICE T ROWE ASSOCIATES INC /MD/ | $1.23B | 0.14% | +0.0% |
| 4 | STATE STREET CORP | $1.05B | 0.04% | -0.0% |
| 5 | Grantham, Mayo, Van Otterloo & Co. LLC | $369.04M | 0.94% | +3.7% |
| 6 | FMR LLC | $184.66M | 0.01% | -21.6% |
| 7 | CITADEL ADVISORS LLC | $68.05M | 0.05% | -18.3% |
| 8 | Gotham Asset Management, LLC | $25.63M | 0.08% | +64.7% |
| 9 | WELLINGTON MANAGEMENT GROUP LLP | $17.78M | 0.00% | -9.4% |
| 10 | MILLENNIUM MANAGEMENT LLC | $12.16M | 0.01% | -46.3% |
| Member | Type | Date |
|---|---|---|
| Alan Armstrong | Buy | Mar 30, 2026 |
| Alan Armstrong | Buy | Mar 27, 2026 |
| Julie Johnson | Sell | Nov 3, 2025 |
| Julia Letlow | Sell |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of DGX with a position worth $2.50B, representing 0.04% of their portfolio. In total, 13 institutional investors hold DGX with a combined value of $7.27B.
Institutional investors hold $7.27B worth of DGX stock across 13 positions. The largest institutional holder is VANGUARD GROUP INC with $2.50B in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For DGX, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their DGX positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| Jul 24, 2025 |
| Julia Letlow | Buy | Apr 28, 2025 |
| Carol Devine Miller | Sell | Mar 10, 2025 |
| Earl Blumenauer | Sell | Apr 4, 2024 |
| Thomas R Carper | Buy | Apr 2, 2020 |
Last Close
$227.86
2026-07-24
YTD
+31.1%
100% of 52-week range
