Ticker · CUSIP 74834L100

DGX

QUEST DIAGNOSTICS INC
Healthcare·Diagnostics & Research
···Share
Holders (tracked)
21
Combined shares
10,742,899
Combined value
$772.56M
Last close
$191.46
Quarter
2025Q4
Tracked holders · last 8 quarters
+8 vs previous quarter over the last 8.
21172024Q12025Q4
Price is +166.2% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

26 events
  1. Jeremy Grantham (GMO) added2026-02-17
    +69,660 shares · 2025Q4
    Position
  2. Ken Griffin (Citadel Advisors) added2026-02-17
    +294,622 shares · 2025Q4
    Position
  3. D.E. Shaw & Co. opened position2026-02-17
    +328,734 shares · 2025Q4
    Position
  4. Two Sigma Investments opened position2026-02-17
    +47,984 shares · 2025Q4
    Position
  5. Izzy Englander (Millennium Mgmt) added2026-02-17
    +38,058 shares · 2025Q4
    Position
  6. Steve Cohen (Point72) opened position2026-02-17
    +100,301 shares · 2025Q4
    Position
  7. AQR Capital Management added2026-02-17
    +17,149 shares · 2025Q4
    Position
  8. T. Rowe Price trimmed2026-02-17
    −708,833 shares · 2025Q4
    Position
  9. Wellington Management trimmed2026-02-17
    −1,341,737 shares · 2025Q4
    Position
  10. Paul Tudor Jones (Tudor Investment) opened position2026-02-17
    +3,068 shares · 2025Q4
    Position
  11. Ray Dalio (Bridgewater Associates) trimmed2026-02-13
    −2,128 shares · 2025Q4
    Position
  12. Lee Ainslie (Maverick Capital) added2026-02-13
    +5,717 shares · 2025Q4
    Position
  13. Norges Bank (Norway SWF) opened position2026-02-10
    +1,322,663 shares · 2025Q4
    Position
  14. Ken Fisher (Fisher Asset Mgmt) opened position2026-02-09
    +1,269 shares · 2025Q4
    Position
  15. First Eagle Investment Management added2026-02-04
    +100 shares · 2025Q4
    Position
  16. Izzy Englander (Millennium Mgmt) trimmed2025-11-14
    −144,838 shares · 2025Q3
    Position
  17. AQR Capital Management added2025-11-14
    +651 shares · 2025Q3
    Position
  18. Lee Ainslie (Maverick Capital) opened position2025-11-14
    +18,178 shares · 2025Q3
    Position
  19. T. Rowe Price trimmed2025-11-14
    −188,707 shares · 2025Q3
    Position
  20. Wellington Management trimmed2025-11-14
    −157,333 shares · 2025Q3
    Position
  21. Norges Bank (Norway SWF) exited2025-11-13
    −1,325,624 shares · 2025Q3
    Position
  22. Ray Dalio (Bridgewater Associates) added2025-11-13
    +1,875 shares · 2025Q3
    Position
  23. Jeremy Grantham (GMO) trimmed2025-11-13
    −1,552 shares · 2025Q3
    Position
  24. Ken Fisher (Fisher Asset Mgmt) exited2025-11-12
    −1,224 shares · 2025Q3
    Position
  25. First Eagle Investment Management trimmed2025-11-12
    −1,862 shares · 2025Q3
    Position
  26. Norges Bank (Norway SWF) added2025-11-12
    +7,216 shares · 2024Q3
    Position

Insider activity

No insider transactions in the last 30 days.
View full insider history for DGX →
Follow-the-investor returns
If you'd copied each holder of DGX…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
T. Rowe Price2016Q1$0.26+73639.5%$1.21B
Jeremy Grantham (GMO)2017Q1$111.17+72.2%$347.7M
Norges Bank (Norway SWF)2016Q1$114.53+67.2%$253.2M
Steve Cohen (Point72)2017Q2$137.20+39.5%$19.2M
Wellington Management2016Q1$140.22+36.5%$19.2M
Paul Tudor Jones (Tudor Investment)2016Q1$141.60+35.2%$555K
Paul Tudor Jones (Tudor Investment)2016Q1$141.60+35.2%$555K
Paul Tudor Jones (Tudor Investment)2016Q1$141.60+35.2%$555K
First Eagle Investment Management2022Q1$142.41+34.4%$753K
AQR Capital Management2016Q1$148.80+28.7%$12.9M
Ken Fisher (Fisher Asset Mgmt)2023Q1$152.29+25.7%$243K
Ray Dalio (Bridgewater Associates)2017Q3$156.04+22.7%$674K
Two Sigma Investments2016Q3$164.75+16.2%$9.2M
Lee Ainslie (Maverick Capital)2016Q3$167.37+14.4%$4.6M
D.E. Shaw & Co.2016Q1$168.03+13.9%$62.9M
Izzy Englander (Millennium Mgmt)2016Q1$173.74+10.2%$9.8M
Izzy Englander (Millennium Mgmt)2016Q1$173.74+10.2%$9.8M
Izzy Englander (Millennium Mgmt)2016Q1$173.74+10.2%$9.8M
Ken Griffin (Citadel Advisors)2016Q1$174.35+9.8%$81.4M
Ken Griffin (Citadel Advisors)2016Q1$174.35+9.8%$81.4M
Ken Griffin (Citadel Advisors)2016Q1$174.35+9.8%$81.4M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.
New positions6
Added to6
Trimmed3
Exited0
—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
16
$146.75B
2022Q2
19
$129.62B
2022Q3
18
$120.9M
2022Q4
19
$2.60B
2023Q1
22
$2.53B
2023Q2
21
$2.55B
2023Q3
15
$1.86B
2023Q4
15
$2.06B
2024Q1
17
$2.41B
2024Q2
18
$2.63B
2024Q3
16
$1.16B
2024Q4
15
$712.2M
2025Q1
16
$762.8M
2025Q2
16
$951.6M
2025Q3
13
$705.3M
2025Q4
21
$772.6M
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2025-11-03Julie JohnsonSell$1K – $15KPDF ↗
2025-07-24Julia LetlowSell$1K – $15KPDF ↗
2025-04-28Julia LetlowBuy$1K – $15KPDF ↗
2025-03-10Carol Devine MillerSell$1K – $15KPDF ↗

Who owns DGX

21 super-investors · 2025Q4
Tracked stake
10.74M
shares
Combined value
$773M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New8Added10Trim3
#ManagerSharesValue
1Jeremy Grantham
GMO
1.82M$315M
2Norges Bank
Norway SWF
1.32M$230M
3Ken Griffin
Citadel Advisors
425.2K$74M
4D.E. Shaw & Co.328.7K$57M
5Steve Cohen
Point72
100.3K$17M
6Wellington Management100.1K$17M
7AQR Capital Management67.2K$12M
8Izzy Englander
Millennium Mgmt
51.4K$9M
9Izzy Englander
Millennium Mgmt
48.4K$8M
10Two Sigma Investments48.0K$8M
11Ken Griffin
Citadel Advisors
47.3K$8M
12Ken Griffin
Citadel Advisors
32.4K$6M
13Lee Ainslie
Maverick Capital
23.9K$4M
14Izzy Englander
Millennium Mgmt
15.8K$3M
15T. Rowe Price6.30M$1M
16First Eagle Investment Management3.9K$683K
17Ray Dalio
Bridgewater Associates
3.5K$610K
18Paul Tudor Jones
Tudor Investment
3.5K$607K
19Paul Tudor Jones
Tudor Investment
3.1K$532K
20Paul Tudor Jones
Tudor Investment
2.9K$503K
21Ken Fisher
Fisher Asset Mgmt
1.3K$220K

Recent moves

20 transactions
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