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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
IWC
351
Integrated Wealth Concepts
Massachusetts
$2.23M
OAM
352
OP Asset Management
$2.19M
ZCI
353
Zevenbergen Capital Investments
Washington
$2.17M
Assenagon Asset Management
354
Assenagon Asset Management
Luxembourg
$2.17M
IGAM
355
iA Global Asset Management
Quebec, Canada
$2.15M
PGFC
356
Peapack-Gladstone Financial Corp
New Jersey
$2.15M
Public Employees Retirement Association of Colorado
357
Public Employees Retirement Association of Colorado
Colorado
$2.13M
SOADOR
358
State of Alaska Department of Revenue
Alaska
$2.13M
PWA
359
Primoris Wealth Advisors
Florida
$2.11M
HPC
360
HM Payson & Co
Maine
$2.07M
BFG
361
Bleakley Financial Group
New Jersey
$2.07M
AssetMark Inc
362
AssetMark Inc
California
$2.07M
Janus Henderson Group
363
Janus Henderson Group
United Kingdom
$2.04M
IMPI
364
Ilmarinen Mutual Pension Insurance
Finland
$2M
DWM
365
Dynasty Wealth Management
Florida
$1.97M
AWCI
366
Alpine Woods Capital Investors
New York
$1.96M
BMSSC
367
B. Metzler seel. Sohn & Co
Germany
$1.95M
TWM
368
TriaGen Wealth Management
California
$1.92M
BCI
369
Brinker Capital Investments
Pennsylvania
$1.91M
MOS
370
MGO One Seven
Ohio
$1.9M
EF
371
Empowered Funds
Pennsylvania
$1.88M
EWA
372
EverSource Wealth Advisors
Alabama
$1.88M
GLR
373
Great Lakes Retirement
Ohio
$1.87M
HCM
374
Highview Capital Management
Illinois
$1.86M
OSAM
375
O'Shaughnessy Asset Management
Connecticut
$1.84M