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Quest Diagnostics

1,051 hedge funds and large institutions have $20B invested in Quest Diagnostics in 2026 Q1 according to their latest regulatory filings, with 121 funds opening new positions, 347 increasing their positions, 373 reducing their positions, and 89 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: $ → $

0% more funds holding

Funds holding: 1,0461,051 (+5)

7% less repeat investments, than reductions

Existing positions increased: 347 | Existing positions reduced: 373

2.74% less ownership

Funds ownership: 95.54%92.8% (-2.7%)

Holders
1,051
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
CS
101
Candriam SCA
Luxembourg
$20.4M
Pictet Asset Management
102
Pictet Asset Management
Switzerland
$20.1M
Mercer Global Advisors
103
Mercer Global Advisors
Colorado
$20M
Natixis Advisors
104
Natixis Advisors
Massachusetts
$19.4M
Man Group
105
Man Group
United Kingdom
$19.2M
Aviva
106
Aviva
United Kingdom
$19.1M
SIC
107
Schwartz Investment Counsel
Michigan
$18.8M
AAB
108
ABN AMRO Bank
Netherlands
$18.7M
Russell Investments Group
109
Russell Investments Group
United Kingdom
$18.7M
State Board of Administration of Florida Retirement System
110
State Board of Administration of Florida Retirement System
Florida
$18.7M
MT
111
Midwest Trust
Kansas
$18.7M
Swedbank
112
Swedbank
Sweden
$18.4M
CAPTRUST Financial Advisors
113
CAPTRUST Financial Advisors
North Carolina
$18.3M
William Blair & Company
114
William Blair & Company
Illinois
$18M
Manulife (Manufacturers Life Insurance)
115
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$17.8M
Wellington Management Group
116
Wellington Management Group
Massachusetts
$17.8M
AAMU
117
AEGON Asset Management (UK)
United Kingdom
$17.8M
BCAM
118
Boston Common Asset Management
Massachusetts
$17.7M
CVA
119
Ceredex Value Advisors
Florida
$17.1M
Fidelity International
120
Fidelity International
Bermuda
$17M
New York State Teachers Retirement System (NYSTRS)
121
New York State Teachers Retirement System (NYSTRS)
New York
$17M
Chevy Chase Trust
122
Chevy Chase Trust
Maryland
$16.1M
FAF
123
Fjarde Ap-fonden
Sweden
$15.7M
SEI Investments
124
SEI Investments
Pennsylvania
$15.6M
EB
125
Eastern Bank
Massachusetts
$15.3M