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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
TAM
226
Trillium Asset Management
Massachusetts
$4.99M -$421K -2,168 -8%
AAM
227
Auxier Asset Management
Oregon
$4.99M -$89.4K -460 -2%
Fuller & Thaler Asset Management
228
Fuller & Thaler Asset Management
California
$4.88M +$1.04M +5,360 +27%
Wealthfront Advisers
229
Wealthfront Advisers
California
$4.88M +$308K +1,584 +7%
WC
230
Waterloo Capital
Texas
$4.86M -$294K -1,511 -6%
RP
231
Rice Partnership
Hawaii
$4.85M +$45.5K +234 +1%
EI
232
Ethic Inc
New York
$4.83M +$829K +4,269 +21%
DIA
233
Dean Investment Associates
Ohio
$4.83M +$73.2K +377 +2%
NI
234
Nuance Investments
Missouri
$4.81M -$6.03M -31,016 -56%
PWM
235
Palumbo Wealth Management
New York
$4.76M -$302K -1,556 -6%
ONB
236
Old National Bancorp
Indiana
$4.69M +$346K +1,783 +8%
State of Tennessee, Department of Treasury
237
State of Tennessee, Department of Treasury
Tennessee
$4.68M
II
238
IFM Investors
Australia
$4.66M +$38.1K +196 +0.8%
Mirae Asset Global Investments
239
Mirae Asset Global Investments
South Korea
$4.63M +$564K +2,902 +14%
DnB Asset Management
240
DnB Asset Management
Norway
$4.61M +$188K +969 +4%
Retirement Systems of Alabama
241
Retirement Systems of Alabama
Alabama
$4.58M -$59.3K -305 -1%
CPCPP
242
Canada Post Corporation Pension Plan
Canada
$4.51M
VAS
243
Vestmark Advisory Solutions
Massachusetts
$4.38M +$1.07M +5,488 +33%
QCM
244
QRG Capital Management
Illinois
$4.38M +$578K +2,975 +15%
CIBC World Market
245
CIBC World Market
Ontario, Canada
$4.37M +$1.61M +8,305 +59%
GAM
246
Generali Asset Management
Italy
$4.33M +$419K +2,156 +11%
Northwestern Mutual Wealth Management
247
Northwestern Mutual Wealth Management
Wisconsin
$4.31M +$524K +2,696 +14%
UB
248
UMB Bank
Missouri
$4.27M -$83.7K -431 -2%
Creative Planning
249
Creative Planning
Kansas
$4.24M +$523K +2,693 +14%
BBVA
250
Banco Bilbao Vizcaya Argentaria
Spain
$4.22M -$67.6K -348 -2%