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Quest Diagnostics
DGX

1,067 hedge funds and large institutions have $20.1B invested in Quest Diagnostics in 2026 Q1 according to their latest regulatory filings, with 123 funds opening new positions, 351 increasing their positions, 381 reducing their positions, and 88 closing their positions.

New
Increased
Maintained
Reduced
Closed

139% more call options, than puts

Call options by funds: $96.9M | Put options by funds: $40.5M

100% more funds holding in top 10

Funds holding in top 10: 2 → 4 (+2)

40% more first-time investments, than exits

New positions opened: 123 | Existing positions closed: 88

9% more capital invested

Capital invested by funds: $18.4B → $20.1B (+$1.67B)

2% more funds holding

Funds holding: 1,050 → 1,067 (+17)

8% less repeat investments, than reductions

Existing positions increased: 351 | Existing positions reduced: 381

2.21% less ownership

Funds ownership: 95.56% → 93.34% (-2.2%)

Holders
1,067
Holders Change
+17
Holders Change %
+1.62%
% of All Funds
13.06%
Holding in Top 10
4
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+100%
% of All Funds
0.05%
New
123
Increased
351
Reduced
381
Closed
88
Calls
$96.9M
Puts
$40.5M
Net Calls
+$56.4M
Net Calls Change
+$39M

Top Buyers

Rank Fund Capital Flow
1
EIG
EdgePoint Investment Group
Ontario, Canada
+$113M
2
MDSL
M.D. Sass LLC
New York
+$58.2M
3
WP
Woodline Partners
California
+$49M
4
CCMG
Clark Capital Management Group
Pennsylvania
+$45.7M
5
Barclays
Barclays
United Kingdom
+$45.1M

Top Sellers

Rank Fund Capital Flow
1
UBS Group
UBS Group
Switzerland
-$80.1M
2
Goldman Sachs
Goldman Sachs
New York
-$70M
3
FMI
Fiduciary Management Inc
Wisconsin
-$63.3M
4
FGP
Freestone Grove Partners
California
-$59M
5
JP Morgan Chase
JP Morgan Chase
New York
-$58.2M
Name Holding Trade Value Shares
Change 		Change in
Stake
FFM
1101
Forum Financial Management
Illinois
– -$617K -3,557 Closed
AWM
1102
Axxcess Wealth Management
California
– -$602K -3,468 Closed
MM
1103
MQS Management
New York
– -$557K -3,209 Closed
VF
1104
Virtu Financial
New York
– -$527K -3,038 Closed
MUAMU
1105
Mitsubishi UFJ Asset Management (UK)
United Kingdom
– -$521K -3,000 Closed
RS
1106
R Squared
Hong Kong
– -$471K -2,713 Closed
NW
1107
NewEdge Wealth
Pennsylvania
– -$451K -2,601 Closed
AC
1108
AXQ Capital
New Jersey
– -$443K -2,550 Closed
IF
1109
Intrua Financial
Texas
– -$432K -2,487 Closed
LIP
1110
Lighthouse Investment Partners
Florida
– -$418K -2,407 Closed
1C
1111
111 Capital
France
– -$407K -2,343 Closed
OF
1112
Optimize Financial
California
– -$407K -2,343 Closed
SRL
1113
Scientech Research LLC
New Jersey
– -$395K -2,278 Closed
CIP
1114
Capital Insight Partners
Arizona
– -$377K -2,168 Closed
SCM
1115
Stevens Capital Management
Pennsylvania
– -$364K -2,095 Closed
FIA
1116
Foundations Investment Advisors
Arizona
– -$361K -2,081 Closed
EP
1117
Edgestream Partners
New Jersey
– -$356K -2,050 Closed
IFU
1118
iSAM Funds (UK)
United Kingdom
– -$307K -1,768 Closed
ICP
1119
Interchange Capital Partners
Pennsylvania
– -$302K -1,742 Closed
LP
1120
LMR Partners
United Kingdom
– -$298K -1,717 Closed
Two Sigma Advisers
1121
Two Sigma Advisers
New York
– -$295K -1,700 Closed
OAM
1122
Oxford Asset Management
United Kingdom
– -$253K -1,456 Closed
PA
1123
PharVision Advisers
Florida
– -$241K -1,386 Closed
AC
1124
Armistice Capital
New York
– -$234K -1,351 Closed
WOSD
1125
WFA of San Diego
California
– -$230K -1,324 Closed
43 44
45
46 47

DGX Hedge Fund Activity: Q1 2026 in Review

1,067 of the 8,172 institutional investors tracked by Wall St. Rank reported a position in Quest Diagnostics (DGX) for Q1 2026, worth a combined $20.1B — up 9.1% from $18.4B a quarter earlier.

Buyers outnumbered sellers: 123 funds opened new DGX positions and 88 closed out — a net gain of 35 holders — while 351 added to existing stakes and 381 trimmed.

The largest buyer was EdgePoint Investment Group, adding an estimated $113M. The largest seller was UBS Group, cutting an estimated $80.1M.

  • 1,067 institutional investors held Quest Diagnostics (DGX) as of Q1 2026, up from 1,050 in Q4 2025.
  • Funds reported $20.1B of Quest Diagnostics stock for Q1 2026, up 9.1% quarter-over-quarter.
  • 123 funds opened new Quest Diagnostics positions in Q1 2026 and 88 closed out, a net change of +35 holders.
  • The largest Quest Diagnostics buyer in Q1 2026 was EdgePoint Investment Group, an estimated $113M added.
  • The largest Quest Diagnostics seller in Q1 2026 was UBS Group, an estimated $80.1M sold.

Based on aggregated 13F filings for Q1 2026.