We are live on ! Find out more
DGX icon

Quest Diagnostics

1,062 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, 381 reducing their positions, and 87 closing their positions.

New
Increased
Maintained
Reduced
Closed

139% more call options, than puts

Call options by funds: $96.9M | Put options by funds: $40.5M

100% more funds holding in top 10

Funds holding in top 10: 24 (+2)

39% more first-time investments, than exits

New positions opened: 121 | Existing positions closed: 87

9% more capital invested

Capital invested by funds: $18.4B → $20.1B (+$1.67B)

1% more funds holding

Funds holding: 1,0481,062 (+14)

8% less repeat investments, than reductions

Existing positions increased: 349 | Existing positions reduced: 381

2.22% less ownership

Funds ownership: 95.55%93.33% (-2.2%)

Holders
1,062
Holders Change
+14
Holders Change %
+1.34%
% of All Funds
13.08%
Holding in Top 10
4
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+100%
% of All Funds
0.05%
New
121
Increased
349
Reduced
381
Closed
87
Calls
$96.9M
Puts
$40.5M
Net Calls
+$56.4M
Net Calls Change
+$39M
Name Holding Trade Value Shares
Change
Change in
Stake
TG
201
TCW Group
California
$6.05M +$419K +2,154 +8%
ATC
202
Argent Trust Co
Tennessee
$5.98M +$122K +630 +2%
BTW
203
Boston Trust Walden
Massachusetts
$5.96M +$299K +1,541 +5%
AM
204
Atwater Malick
Pennsylvania
$5.94M -$975K -5,017 -14%
ASRS
205
Arizona State Retirement System
Arizona
$5.93M -$104K -534 -2%
TAIM
206
Te Ahumairangi Investment Management
New Zealand
$5.92M -$838K -4,314 -12%
CNB
207
Czech National Bank
Czech Republic
$5.87M +$121K +625 +2%
TFA
208
Toth Financial Advisory
Virginia
$5.83M +$40.6K +209 +0.7%
Zurich Cantonal Bank
209
Zurich Cantonal Bank
Switzerland
$5.75M -$10M -51,452 -64%
ILCM
210
Ivy Lane Capital Management
Florida
$5.68M
SOMRS
211
State of Michigan Retirement System
Michigan
$5.63M -$77.7K -400 -1%
TCA
212
Teewinot Capital Advisers
New York
$5.61M +$2.04M +10,506 +58%
N
213
Natixis
France
$5.52M +$5.48M +28,191 New
OAM
214
Occidental Asset Management
California
$5.43M +$150K +771 +3%
SIA
215
SGL Investment Advisors
Montana
$5.36M -$46.8K -241 -0.8%
Rockefeller Capital Management
216
Rockefeller Capital Management
New York
$5.34M -$399K -2,056 -7%
SFA
217
Sequoia Financial Advisors
Ohio
$5.3M +$63.7K +328 +1%
TSW
218
Thompson Siegel & Walmsley
Virginia
$5.26M -$1.13M -5,800 -18%
Mariner
219
Mariner
Kansas
$5.26M -$3.65M -18,800 -41%
WorldQuant Millennium Advisors
220
WorldQuant Millennium Advisors
New York
$5.24M +$5.2M +26,745 New
Capital Fund Management (CFM)
221
Capital Fund Management (CFM)
France
$5.21M +$5.16M +26,563 New
CYG
222
Clean Yield Group
Vermont
$5.16M -$69.8K -359 -1%
MIM
223
MetLife Investment Management
New Jersey
$5.04M -$183K -944 -4%
COPPSERS
224
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$5.02M -$49K -252 -1%
SA
225
Sanctuary Advisors
Indiana
$5M +$160K +824 +3%