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Smart Money Score
Composite context from Form 4, 13F and congressional disclosures; not a forecast.
Of the 15 tracked institutions holding DGX, 8 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +3.3pt. It's a gauge of who owns the name, not just how many.
Among the 15 tracked institutional investors we monitor, DGX (QUEST DIAGNOSTICS INC) is held with a combined value of $7.60B across 38,462,147 shares. The largest holder is VANGUARD GROUP INC with a position worth $2.50B (0.04% of their portfolio). 3 funds opened new positions in the most recent quarter. 7 funds increased their holdings. 5 funds reduced their position.
Total Institutional Value
$7.60B
Total Shares Held
38,462,147
Institutional Holders
15
% of Shares Outstanding
34.8%
of 110.37M shares · SEC 2026-07-15
Days to Cover
4.7-9.8%
3.32M shares short · FINRA 2026-08-14
Tracked 13F institutions hold 34.8% 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
6
$10.26M
Total Transactions
6
Last 12 months
| Date | Insider | Code | Type | Shares | Value |
|---|---|---|---|---|---|
| Sep 1, 2026 | J. E. Davis | S | Sale | 10,000 | $2.43M |
| Aug 28, 2026 | MICHAEL E PREVOZNIK | S | Sale | 430 | $105.14K |
| Aug 28, 2026 | MICHAEL E PREVOZNIK | S | Sale | 16,010 | $3.89M |
| Aug 28, 2026 | MICHAEL E PREVOZNIK | S | Sale | 6,237 | $1.52M |
| Jul 28, 2026 | MARK E DELANEY | S | Sale | 1,600 | $376.29K |
| 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. | $1.97B | 0.03% | +1.1% |
| 3 | STATE STREET CORP | $1.17B | 0.03% | +2.5% |
| 4 | PRICE T ROWE ASSOCIATES INC /MD/ | $1.15B | 0.12% | -13.5% |
| 5 | Grantham, Mayo, Van Otterloo & Co. LLC | $400.21M | 0.90% | +0.3% |
| 6 | FMR LLC | $296.46M | 0.01% | +48.5% |
| 7 | CITADEL ADVISORS LLC | $28.23M | 0.02% | -61.6% |
| 8 | Gotham Asset Management, LLC | $24.91M | 0.06% | -10.1% |
| 9 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $22.53M | 0.03% | New |
| 10 | WELLINGTON MANAGEMENT GROUP LLP | $18.56M | 0.00% | -3.5% |
SEC Schedule 13D (activist) and 13G (passive) filings for DGX. Filed when an investor acquires 5%+ ownership.
| Member | Type | Date |
|---|---|---|
| Alan Armstrong | Buy | Mar 30, 2026 |
| Alan Armstrong | Buy | Mar 27, 2026 |
| Julie Johnson | Sell | Nov 3, 2025 |
| Julie Johnson | Buy |
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, 15 institutional investors hold DGX with a combined value of $7.60B.
In the most recent quarter, 3 funds opened a new position in DGX. Additionally, 7 increased their holdings and 5 reduced their positions.
Institutional investors hold $7.60B worth of DGX stock across 15 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 →
| Oct 30, 2025 |
| Julie Johnson | Sell | Oct 30, 2025 |
| Julia Letlow | Sell | Jul 24, 2025 |
| Julia Letlow | Buy | Apr 28, 2025 |
| Carol Devine Miller | Sell | Mar 10, 2025 |
Showing 8 of 11. STOCK Act disclosures lag up to 45 days.
Last Close
$235.46
2026-09-09
YTD
+35.5%
87% of 52-week range
