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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
TAM
226
Trillium Asset Management
Massachusetts
$4.99M
AAM
227
Auxier Asset Management
Oregon
$4.99M
Fuller & Thaler Asset Management
228
Fuller & Thaler Asset Management
California
$4.88M
Wealthfront Advisers
229
Wealthfront Advisers
California
$4.88M
WC
230
Waterloo Capital
Texas
$4.86M
RP
231
Rice Partnership
Hawaii
$4.85M
EI
232
Ethic Inc
New York
$4.83M
DIA
233
Dean Investment Associates
Ohio
$4.83M
NI
234
Nuance Investments
Missouri
$4.81M
PWM
235
Palumbo Wealth Management
New York
$4.76M
ONB
236
Old National Bancorp
Indiana
$4.69M
State of Tennessee, Department of Treasury
237
State of Tennessee, Department of Treasury
Tennessee
$4.68M
II
238
IFM Investors
Australia
$4.66M
Mirae Asset Global Investments
239
Mirae Asset Global Investments
South Korea
$4.63M
DnB Asset Management
240
DnB Asset Management
Norway
$4.61M
Retirement Systems of Alabama
241
Retirement Systems of Alabama
Alabama
$4.58M
CPCPP
242
Canada Post Corporation Pension Plan
Canada
$4.51M
VAS
243
Vestmark Advisory Solutions
Massachusetts
$4.38M
QCM
244
QRG Capital Management
Illinois
$4.38M
CIBC World Market
245
CIBC World Market
Ontario, Canada
$4.37M
GAM
246
Generali Asset Management
Italy
$4.33M
Northwestern Mutual Wealth Management
247
Northwestern Mutual Wealth Management
Wisconsin
$4.31M
UB
248
UMB Bank
Missouri
$4.27M
Creative Planning
249
Creative Planning
Kansas
$4.24M
BBVA
250
Banco Bilbao Vizcaya Argentaria
Spain
$4.22M