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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
National Pension Service
176
National Pension Service
South Korea
$7.53M -$34.9M -191,473 -82%
SLAM
177
Swiss Life Asset Management
$7.52M +$4.5M +24,722 +133%
MSV
178
MN Services Vermogensbeheer
Netherlands
$7.35M +$94.9K +521 +1%
Cerity Partners
179
Cerity Partners
New York
$7.31M +$289K +1,588 +4%
HighTower Advisors
180
HighTower Advisors
Illinois
$7.17M +$109K +597 +1%
TWC
181
TD Waterhouse Canada
Ontario, Canada
$7.14M +$520K +2,855 +7%
JFG
182
Jefferies Financial Group
New York
$7.14M +$3.58M +19,683 +92%
AGP
183
Artia Global Partners
Florida
$7.08M -$7.45M -40,900 -50%
OCM
184
Olstein Capital Management
New York
$6.94M
KK
185
KLP Kapitalforvaltning
Norway
$6.84M +$54.6K +300 +0.8%
GIA
186
GHP Investment Advisors
Colorado
$6.68M -$140K -769 -2%
OC
187
Oppenheimer & Co
New York
$6.57M +$11.8K +65 +0.2%
PNC Financial Services Group
188
PNC Financial Services Group
Pennsylvania
$6.38M -$19.3K -106 -0.3%
CWP
189
Capital Wealth Planning
Florida
$6.35M +$21.3K +117 +0.3%
SPS
190
Susquehanna Portfolio Strategies
Pennsylvania
$6.32M +$6.63M +36,421 New
State of New Jersey Common Pension Fund D
191
State of New Jersey Common Pension Fund D
New Jersey
$6.31M -$164K -902 -2%
Handelsbanken Fonder
192
Handelsbanken Fonder
Sweden
$6.15M -$356K -1,957 -5%
AM
193
Atwater Malick
Pennsylvania
$6.13M -$1.39M -7,609 -18%
LFAS
194
Level Four Advisory Services
Texas
$6.05M +$23.1K +127 +0.4%
Truist Financial
195
Truist Financial
North Carolina
$6.04M -$1.59M -8,740 -20%
TAIM
196
Te Ahumairangi Investment Management
New Zealand
$5.99M -$714K -3,922 -10%
Pathstone Holdings
197
Pathstone Holdings
New Jersey
$5.92M -$7.47M -41,037 -55%
TSW
198
Thompson Siegel & Walmsley
Virginia
$5.67M
OAM
199
Ostrum Asset Management
France
$5.58M +$280K +1,536 +5%
PFM
200
Patton Fund Management
Texas
$5.56M +$5.6M +30,772 +2,429%