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Quest Diagnostics

982 hedge funds and large institutions have $19.9B invested in Quest Diagnostics in 2025 Q3 according to their latest regulatory filings, with 116 funds opening new positions, 349 increasing their positions, 336 reducing their positions, and 83 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

2.35% less ownership

Funds ownership: 95.95%93.6% (-2.4%)

12% less call options, than puts

Call options by funds: $98.2M | Put options by funds: $112M

25% less funds holding in top 10

Funds holding in top 10: 43 (-1)

Holders
982
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$98.2M
Puts
$112M
Net Calls
Net Calls Change

Top Buyers

1 +$190M
2 +$162M
3 +$82.7M
4
Goldman Sachs
Goldman Sachs
New York
+$79.7M
5
Marshall Wace
Marshall Wace
United Kingdom
+$67.1M

Top Sellers

1 -$116M
2 -$88.7M
3 -$79.3M
4
UBS AM
UBS AM
Illinois
-$60M
5
UBS Group
UBS Group
Switzerland
-$59.9M
Name Holding Trade Value Shares
Change
Change in
Stake
State Board of Administration of Florida Retirement System
101
State Board of Administration of Florida Retirement System
Florida
$18.5M
SIC
102
Schwartz Investment Counsel
Michigan
$18.3M
MT
103
Midwest Trust
Kansas
$18M
PR
104
Payden & Rygel
California
$18M
BCAM
105
Boston Common Asset Management
Massachusetts
$17.9M
Aviva
106
Aviva
United Kingdom
$17.7M
Mercer Global Advisors
107
Mercer Global Advisors
Colorado
$17.7M
GIM
108
Glenmede Investment Management
Pennsylvania
$17.2M
AAB
109
ABN AMRO Bank
Netherlands
$17M
CP
110
Coho Partners
Pennsylvania
$17M
Chevy Chase Trust
111
Chevy Chase Trust
Maryland
$16.6M
New York State Teachers Retirement System (NYSTRS)
112
New York State Teachers Retirement System (NYSTRS)
New York
$16.5M
LPL Financial
113
LPL Financial
California
$16.3M
IHAM
114
Integral Health Asset Management
New York
$16.2M
Swedbank
115
Swedbank
Sweden
$16.2M
State of Wisconsin Investment Board
116
State of Wisconsin Investment Board
Wisconsin
$16.1M
AGP
117
Artia Global Partners
Florida
$15.6M
CA
118
CSM Advisors
Pennsylvania
$15.6M
CIBC Asset Management
119
CIBC Asset Management
Ontario, Canada
$15.5M
AAIS
120
ABN AMRO Investment Solutions
$15.4M
BGIM
121
Brandywine Global Investment Management
Pennsylvania
$15.1M
SEI Investments
122
SEI Investments
Pennsylvania
$14.9M
JWM
123
JGP Wealth Management
Oregon
$14.9M
Mitsubishi UFJ Trust & Banking
124
Mitsubishi UFJ Trust & Banking
Japan
$14.8M
Pathstone Holdings
125
Pathstone Holdings
New Jersey
$14.3M