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Quest Diagnostics

1,062 hedge funds and large institutions have $20.1B invested in Quest Diagnostics in 2026 Q1 according to their latest regulatory filings, with 121 funds opening new positions, 349 increasing their positions, 381 reducing their positions, and 87 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: 24 (+2)

39% more first-time investments, than exits

New positions opened: 121 | Existing positions closed: 87

9% more capital invested

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

1% more funds holding

Funds holding: 1,0481,062 (+14)

8% less repeat investments, than reductions

Existing positions increased: 349 | Existing positions reduced: 381

2.22% less ownership

Funds ownership: 95.55%93.33% (-2.2%)

Holders
1,062
Holders Change
+14
Holders Change %
+1.34%
% of All Funds
13.08%
Holding in Top 10
4
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+100%
% of All Funds
0.05%
New
121
Increased
349
Reduced
381
Closed
87
Calls
$96.9M
Puts
$40.5M
Net Calls
+$56.4M
Net Calls Change
+$39M
Name Holding Trade Value Shares
Change
Change in
Stake
GKIM
926
GW&K Investment Management
Massachusetts
$21K +$583 +3 +3%
S
927
Sachetta
Massachusetts
$19.6K -$2.72K -14 -12%
BCPWM
928
Bradley & Co Private Wealth Management
Florida
$19.6K
CAM
929
Costello Asset Management
Pennsylvania
$19.6K
GTAM
930
Global Trust Asset Management
Florida
$19.6K
BA
931
Ballast Advisors
Minnesota
$19.6K +$19.4K +100 New
AWM
932
Abound Wealth Management
Tennessee
$19.1K -$194 -1 -1%
JFGIW
933
Johnson Financial Group Inc (Wisconsin)
Wisconsin
$18.6K
ZBNA
934
Zions Bancorporation, National Association
Utah
$18.4K +$5.83K +30 +47%
ECM
935
Estabrook Capital Management
New York
$18.4K +$18.3K +94 New
SS
936
Sunbelt Securities
Texas
$18K
AW
937
Avion Wealth
Texas
$18K
RBI
938
Raiffeisen Bank International
Austria
$17.9K
CFB
939
Cullen/Frost Bankers
Texas
$17.7K
PF
940
PlanVest Financial
Maryland
$17.1K +$16.9K +87 New
FFO
941
Fortitude Family Office
Arizona
$16.7K +$7.38K +38 +81%
CPG
942
Cornerstone Planning Group
New Jersey
$16.1K +$3.5K +18 +27%
OAJ
943
Ogorek Anthony Joseph
New York
$16K
GSWM
944
Golden State Wealth Management
California
$15.9K
OCWP
945
Owl Creek Wealth Partners
Colorado
$15.7K +$15.5K +80 New
Optiver Holding
946
Optiver Holding
Netherlands
$15.3K +$15.2K +78 New
SIS
947
Sound Income Strategies
Florida
$15.2K +$194 +1 +1%
QC
948
Quent Capital
New York
$14.5K -$8.55K -44 -37%
RDFA
949
Ritter Daniher Financial Advisory
Ohio
$14.5K +$971 +5 +7%
MCM
950
MV Capital Management
Maryland
$14.3K