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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
Treasurer of the State of North Carolina
101
Treasurer of the State of North Carolina
North Carolina
$20.7M
CS
102
Candriam SCA
Luxembourg
$20.4M
Pictet Asset Management
103
Pictet Asset Management
Switzerland
$20.1M
Mercer Global Advisors
104
Mercer Global Advisors
Colorado
$20M
Natixis Advisors
105
Natixis Advisors
Massachusetts
$19.4M
Man Group
106
Man Group
United Kingdom
$19.2M
Aviva
107
Aviva
United Kingdom
$19.1M
SIC
108
Schwartz Investment Counsel
Michigan
$18.8M
AAB
109
ABN AMRO Bank
Netherlands
$18.7M
Russell Investments Group
110
Russell Investments Group
United Kingdom
$18.7M
State Board of Administration of Florida Retirement System
111
State Board of Administration of Florida Retirement System
Florida
$18.7M
MT
112
Midwest Trust
Kansas
$18.7M
Swedbank
113
Swedbank
Sweden
$18.4M
CAPTRUST Financial Advisors
114
CAPTRUST Financial Advisors
North Carolina
$18.3M
William Blair & Company
115
William Blair & Company
Illinois
$18M
Manulife (Manufacturers Life Insurance)
116
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$17.8M
Wellington Management Group
117
Wellington Management Group
Massachusetts
$17.8M
AAMU
118
AEGON Asset Management (UK)
United Kingdom
$17.8M
BCAM
119
Boston Common Asset Management
Massachusetts
$17.7M
CVA
120
Ceredex Value Advisors
Florida
$17.1M
Fidelity International
121
Fidelity International
Bermuda
$17M
New York State Teachers Retirement System (NYSTRS)
122
New York State Teachers Retirement System (NYSTRS)
New York
$17M
GT
123
Glenmede Trust
Pennsylvania
$16.8M
Chevy Chase Trust
124
Chevy Chase Trust
Maryland
$16.1M
FAF
125
Fjarde Ap-fonden
Sweden
$15.7M