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Quest Diagnostics

1,061 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, 380 reducing their positions, and 87 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding in top 10

Funds holding in top 10:

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

1% more funds holding

Funds holding: 1,0471,061 (+14)

8% less repeat investments, than reductions

Existing positions increased: 349 | Existing positions reduced: 380

2.22% less ownership

Funds ownership: 95.54%93.32% (-2.2%)

Holders
1,061
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
4
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$96.9M
Puts
$40.5M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
SLAM
151
Swiss Life Asset Management
$10.4M
New York State Common Retirement Fund
152
New York State Common Retirement Fund
New York
$10.4M
Royal London Asset Management
153
Royal London Asset Management
United Kingdom
$10.1M
AG
154
AIA Group
Hong Kong
$9.87M
AQR Capital Management
155
AQR Capital Management
Connecticut
$9.85M
Vontobel Holding
156
Vontobel Holding
Switzerland
$9.85M
Millennium Management
157
Millennium Management
New York
$9.83M
CC
158
Casdin Capital
New York
$9.8M
PP
159
Prudential plc
United Kingdom
$9.66M
HCM
160
Hilton Capital Management
New York
$9.64M
National Bank of Canada
161
National Bank of Canada
Quebec, Canada
$9.6M
Nomura Asset Management
162
Nomura Asset Management
Japan
$9.57M
Lazard Asset Management
163
Lazard Asset Management
New York
$9.52M
Asset Management One
164
Asset Management One
Japan
$9.27M
National Pension Service
165
National Pension Service
South Korea
$9.23M
HA
166
Heartland Advisors
Wisconsin
$9.21M
KOCAA
167
Knights of Columbus Asset Advisors
Connecticut
$9.17M
TAF
168
Tredje AP-fonden
Sweden
$9.13M
Calamos Advisors
169
Calamos Advisors
Illinois
$8.53M
RAM
170
Resona Asset Management
Japan
$8.5M
Commonwealth Equity Services
171
Commonwealth Equity Services
Massachusetts
$8.4M
MSV
172
MN Services Vermogensbeheer
Netherlands
$8.3M
AGP
173
Artia Global Partners
Florida
$8M
Neuberger Berman Group
174
Neuberger Berman Group
New York
$7.97M
CBU
175
CIBC Bancorp USA
Illinois
$7.79M