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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
SLA
651
Silver Lake Advisory
Utah
$374K -$7.97K -41 -2%
SAM
652
S.A. Mason
Michigan
$372K
GF
653
Gabelli Funds
New York
$372K +$38.9K +200 +12%
BBHC
654
Brown Brothers Harriman & Co
New York
$368K +$227K +1,170 +166%
OKSA
655
O'Keefe Stevens Advisory
New York
$367K
WANY
656
Wealthspire Advisors (New York)
New York
$367K -$387K -1,993 -52%
ONST
657
Old North State Trust
North Carolina
$363K +$57.9K +298 +19%
AO
658
Advisor OS
Illinois
$362K +$359K +1,848 New
LCWP
659
Legacy Capital Wealth Partners
Arkansas
$357K -$90.5K -466 -20%
PI
660
PFG Investments
New York
$357K -$9.71K -50 -3%
SCM
661
Schnieders Capital Management
California
$356K
GFP
662
Gryphon Financial Partners
Ohio
$355K -$2.14K -11 -0.6%
BHCM
663
Brevan Howard Capital Management
Jersey
$354K -$1.97M -10,118 -85%
IC
664
Inscription Capital
Texas
$353K -$15.9K -82 -4%
EWM
665
Evercore Wealth Management
New York
$350K
WCM
666
Washington Capital Management
Washington
$349K
EW
667
Evoke Wealth
California
$348K -$87.6K -451 -20%
DO
668
denkapparat Operations
Germany
$348K +$345K +1,774 New
BCV
669
Banque Cantonale Vaudoise
Switzerland
$346K -$1.01M -5,219 -75%
AG
670
Ascent Group
Virginia
$346K +$343K +1,765 New
DWM
671
Destination Wealth Management
California
$346K -$6.8K -35 -2%
MFAM
672
Motley Fool Asset Management
Virginia
$344K -$3.3K -17 -1%
FFBTD
673
First Financial Bank - Trust Division
Ohio
$344K -$153K -787 -31%
CLIP
674
Colter Lewis Investment Partners
Connecticut
$343K
LG
675
Lane Generational
Massachusetts
$341K