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Quest Diagnostics

1,048 hedge funds and large institutions have $18.4B invested in Quest Diagnostics in 2025 Q4 according to their latest regulatory filings, with 148 funds opening new positions, 350 increasing their positions, 345 reducing their positions, and 90 closing their positions.

New
Increased
Maintained
Reduced
Closed

64% more first-time investments, than exits

New positions opened: 148 | Existing positions closed: 90

30% more call options, than puts

Call options by funds: $74.8M | Put options by funds: $57.4M

4% more funds holding

Funds holding: 1,0051,048 (+43)

1.7% more ownership

Funds ownership: 93.86%95.55% (+1.7%)

1% more repeat investments, than reductions

Existing positions increased: 350 | Existing positions reduced: 345

8% less capital invested

Capital invested by funds: $20B → $18.4B (-$1.56B)

33% less funds holding in top 10

Funds holding in top 10: 32 (-1)

Holders
1,048
Holders Change
+43
Holders Change %
+4.28%
% of All Funds
12.75%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.02%
New
148
Increased
350
Reduced
345
Closed
90
Calls
$74.8M
Puts
$57.4M
Net Calls
+$17.5M
Net Calls Change
+$31.2M
Name Holding Trade Value Shares
Change
Change in
Stake
Zurich Cantonal Bank
126
Zurich Cantonal Bank
Switzerland
$14M +$8.15M +44,780 +124%
Man Group
127
Man Group
United Kingdom
$13.9M +$14.1M +77,686 +3,102%
GAM
128
Gotham Asset Management
New York
$13.8M +$4.5M +24,701 +45%
P
129
Paradiem
Louisiana
$13.7M +$14.3M +78,670 New
BGIM
130
Brandywine Global Investment Management
Pennsylvania
$13.6M -$113K -623 -0.8%
Mitsubishi UFJ Trust & Banking
131
Mitsubishi UFJ Trust & Banking
Japan
$13.5M -$28K -154 -0.2%
BCAM
132
Boston Common Asset Management
Massachusetts
$13.4M -$3.05M -16,756 -18%
State of Wisconsin Investment Board
133
State of Wisconsin Investment Board
Wisconsin
$13.2M -$1.48M -8,139 -10%
Lazard Asset Management
134
Lazard Asset Management
New York
$13.2M +$13.2M +72,228 +2,003%
DB
135
Danske Bank
Denmark
$13M +$2.04M +11,200 +18%
IHAM
136
Integral Health Asset Management
New York
$13M -$1.82M -10,000 -12%
AAIS
137
ABN AMRO Investment Solutions
$12.5M -$1.55M -8,519 -11%
SEI Investments
138
SEI Investments
Pennsylvania
$12.4M -$1.23M -6,734 -9%
Corient Private Wealth
139
Corient Private Wealth
Florida
$12.4M +$32.1M +176,195 +674%
ACI
140
Alpha Cubed Investments
California
$12.1M -$229K -1,259 -2%
HW
141
Hancock Whitney
Mississippi
$11.9M +$124K +679 +1%
AQR Capital Management
142
AQR Capital Management
Connecticut
$11.7M +$3.12M +17,149 +34%
Bank of Nova Scotia
143
Bank of Nova Scotia
Ontario, Canada
$11.5M +$9.19M +50,471 +316%
Allianz Asset Management
144
Allianz Asset Management
Germany
$11.2M -$17M -93,144 -59%
Ohio Public Employees Retirement System (OPERS)
145
Ohio Public Employees Retirement System (OPERS)
Ohio
$11.2M -$731K -4,015 -6%
Nordea Investment Management
146
Nordea Investment Management
Sweden
$11.1M +$39.7K +218 +0.3%
BCM
147
Becker Capital Management
Oregon
$10.8M -$355K -1,951 -3%
EWA
148
Exencial Wealth Advisors
Oklahoma
$10.8M -$235K -1,292 -2%
DPL
149
Danica Pension Livsforsikrings
$10.6M -$1.73M -9,500 -13%
Vontobel Holding
150
Vontobel Holding
Switzerland
$10.5M -$691K -3,796 -6%