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Quest Diagnostics
DGX

967 hedge funds and large institutions have $17.5B invested in Quest Diagnostics in 2025 Q1 according to their latest regulatory filings, with 143 funds opening new positions, 317 increasing their positions, 337 reducing their positions, and 61 closing their positions.

New
Increased
Maintained
Reduced
Closed

134% more first-time investments, than exits

New positions opened: 143 | Existing positions closed: 61

17% more capital invested

Capital invested by funds: $15B → $17.5B (+$2.52B)

8% more funds holding

Funds holding: 895 → 967 (+72)

4.24% more ownership

Funds ownership: 89.04% → 93.27% (+4.2%)

0% more funds holding in top 10

Funds holding in top 10: 1 → 1 (0)

6% less repeat investments, than reductions

Existing positions increased: 317 | Existing positions reduced: 337

39% less call options, than puts

Call options by funds: $83.5M | Put options by funds: $136M

Holders
967
Holders Change
+72
Holders Change %
+8.04%
% of All Funds
12.97%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
143
Increased
317
Reduced
337
Closed
61
Calls
$83.5M
Puts
$136M
Net Calls
-$52.3M
Net Calls Change
-$80.5M

Top Buyers

Rank Fund Capital Flow
1
Boston Partners
Boston Partners
Massachusetts
+$377M
2
JP Morgan Chase
JP Morgan Chase
New York
+$219M
3
Nordea Investment Management
Nordea Investment Management
Sweden
+$120M
4
Neuberger Berman Group
Neuberger Berman Group
New York
+$93.8M
5
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
+$81.1M

Top Sellers

Rank Fund Capital Flow
1
Millennium Management
Millennium Management
New York
-$105M
2
Aberdeen Group
Aberdeen Group
United Kingdom
-$56.7M
3
American Century Companies
American Century Companies
Missouri
-$51.4M
4
Marshall Wace
Marshall Wace
United Kingdom
-$51.4M
5
Prudential Financial
Prudential Financial
New Jersey
-$44.8M
Name Holding Trade Value Shares
Change 		Change in
Stake
PMFA
901
Plante Moran Financial Advisors
Michigan
$7.78K – – –
HCP
902
Hexagon Capital Partners
Arkansas
$7.78K +$1.15K +7 +18%
SVCP
903
Silicon Valley Capital Partners
California
$7.69K – – –
BCWM
904
Bartlett & Co Wealth Management
Ohio
$7.61K – – –
SCB
905
Saudi Central Bank
Saudi Arabia
$7.45K +$7.23K +44 New
CPG
906
Cornerstone Planning Group
New Jersey
$6.94K +$4.11K +25 +167%
ACM
907
Anfield Capital Management
California
$6.77K – – –
A
908
Allianz
Germany
$5.92K – – –
SPF
909
South Plains Financial
Texas
$5.75K +$5.58K +34 New
ZBNA
910
Zions Bancorporation, National Association
Utah
$5.41K +$5.26K +32 New
TWD
911
True Wealth Design
Ohio
$5.25K -$12.5K -76 -71%
HNW
912
High Note Wealth
Minnesota
$5.25K – – –
CTC
913
Cetera Trust Company
Minnesota
$5.08K – – –
FFO
914
Fortitude Family Office
Arizona
$5.08K – – –
TFM
915
TFC Financial Management
Massachusetts
$4.91K – – –
GFPC
916
Global Financial Private Client
Florida
$4.91K +$1.64K +10 +53%
FFA
917
Frazier Financial Advisors
Ohio
$4.7K – – –
MAM
918
Meeder Asset Management
Ohio
$4.57K -$262K -1,594 -98%
BOJHT
919
Bank of Jackson Hole Trust
Wyoming
$4.5K – – –
RMP
920
Richards, Merrill & Peterson
Washington
$3.89K – – –
MAFA
921
MJT & Associates Financial Advisory
Minnesota
$3.38K +$3.29K +20 New
DPW
922
DiNuzzo Private Wealth
Pennsylvania
$3.21K +$164 +1 +6%
MSG
923
Main Street Group
Virginia
$3.14K +$3.29K +20 New
SL
924
Salomon & Ludwin
Virginia
$3.05K – – –
TSMHT
925
Thurston Springer Miller Herd & Titak
Indiana
$3.04K +$2.96K +18 New
35 36
37
38 39

DGX Hedge Fund Activity: Q1 2025 in Review

967 of the 7,458 institutional investors tracked by Wall St. Rank reported a position in Quest Diagnostics (DGX) for Q1 2025, worth a combined $17.5B — up 17% from $15B a quarter earlier.

Buyers outnumbered sellers: 143 funds opened new DGX positions and 61 closed out — a net gain of 82 holders — while 317 added to existing stakes and 337 trimmed.

The largest buyer was Boston Partners, opening a new position worth an estimated $377M. The largest seller was Millennium Management, cutting an estimated $105M.

  • 967 institutional investors held Quest Diagnostics (DGX) as of Q1 2025, up from 895 in Q4 2024.
  • Funds reported $17.5B of Quest Diagnostics stock for Q1 2025, up 17% quarter-over-quarter.
  • 143 funds opened new Quest Diagnostics positions in Q1 2025 and 61 closed out, a net change of +82 holders.
  • The largest Quest Diagnostics buyer in Q1 2025 was Boston Partners, an estimated $377M added.
  • The largest Quest Diagnostics seller in Q1 2025 was Millennium Management, an estimated $105M sold.

Based on aggregated 13F filings for Q1 2025.