QUEST DIAGNOSTICS INC (DGX) Stock Institutional Trading Activity
QUEST DIAGNOSTICS INC (DGX) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q3 2025), investors with some of the largest reported share count changes include First Eagle U.S. Value, Sequoia Financial Advisors, Olstein Capital Management, Causeway Capital Management, and Renaissance Technologies LLC. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.
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- QUEST DIAGNOSTICS INC (DGX) stock institutional ownership
- QUEST DIAGNOSTICS INC (DGX) stock insider trading activity
- Stock rankings
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q3 2013 | Jensen Investment Management | Sell | -1,281 | 7,650 | $473 |
| Q3 2013 | Ariel Appreciation Fund | Buy | 41,494 | 48,939 | $3,024 |
| Q3 2013 | Renaissance Technologies LLC | Sell | -290,800 | 127,700 | $7,891 |
| Q2 2013 | Hancock Classic Value | Buy | 665,375 | 665,375 | $40,342 |
| Q2 2013 | Jensen Investment Management | Buy | 8,931 | 8,931 | $541 |
| Q2 2013 | Ariel Appreciation Fund | Buy | 7,445 | 7,445 | $451 |
| Q2 2013 | Olstein Capital Management | Buy | 83,000 | 83,000 | $5,032 |
| Q2 2013 | Renaissance Technologies LLC | Buy | 418,500 | 418,500 | $25,374 |
Frequently asked questions about DGX activity
Which institutional owners are buying DGX?
Institutional owners buying DGX include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in DGX activity?
"Buy" means an investor increased their reported position in DGX compared to the prior reporting period. This reflects growing exposure to QUEST DIAGNOSTICS INC (DGX) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in DGX increasing?
Institutional interest in DGX can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.