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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
SIC
926
SJS Investment Consulting
Ohio
$2.88K -$657 -4 -19%
IHWM
927
Iron Horse Wealth Management
Iowa
$2.88K +$2.79K +17 New
ATC
928
Adirondack Trust Company
New York
$2.71K – – –
AWM
929
Activest Wealth Management
Florida
$2.71K +$2.63K +16 New
CWC
930
Carolinas Wealth Consulting
North Carolina
$2.54K – – –
JFA
931
JNBA Financial Advisors
Minnesota
$2.54K – – –
VWA
932
Valued Wealth Advisors
Utah
$2.37K – – –
FGAM
933
Financial Gravity Asset Management
Texas
$2.37K +$2.3K +14 New
BWAM
934
Boyd Watterson Asset Management
Ohio
$2.2K – – –
PA
935
PSI Advisors
Florida
$2.2K +$2.14K +13 New
HWA
936
HHM Wealth Advisors
Tennessee
$1.86K – – –
SC
937
SouthState Corp
Florida
$1.86K +$1.81K +11 New
AP
938
Aspect Partners
Virginia
$1.86K – – –
WPA
939
Wealth Preservation Advisors
Tennessee
$1.69K +$1.64K +10 New
JGIA
940
Jackson Grant Investment Advisers
Connecticut
$1.52K – – –
SC
941
Solstein Capital
California
$1.52K – – –
LCM
942
Logan Capital Management
Pennsylvania
$1.52K +$164 +1 +13%
KFI
943
Key Financial Inc
Pennsylvania
$1.18K – – –
NRG
944
Nemes Rush Group
Michigan
$1.18K – – –
BWL
945
Bogart Wealth LLC
Virginia
$1.07K – – –
CWP
946
Clark Wealth Partners
Illinois
$1.01K +$986 +6 New
PMAM
947
Picton Mahoney Asset Management
Ontario, Canada
$1K – – –
RS
948
Rakuten Securities
Japan
$846 -$2.46K -15 -75%
WCM
949
WealthTrak Capital Management
Virginia
$846 +$821 +5 New
PWA
950
Principia Wealth Advisory
Texas
$820 -$164 -1 -17%
36 37
38
39 40

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.