We are live on ! Find out more
DGX icon

Quest Diagnostics

1,048 hedge funds and large institutions have $18.4B invested in Quest Diagnostics in 2025 Q4 according to their latest regulatory filings, with 148 funds opening new positions, 350 increasing their positions, 345 reducing their positions, and 90 closing their positions.

New
Increased
Maintained
Reduced
Closed

64% more first-time investments, than exits

New positions opened: 148 | Existing positions closed: 90

30% more call options, than puts

Call options by funds: $74.8M | Put options by funds: $57.4M

4% more funds holding

Funds holding: 1,0051,048 (+43)

1.7% more ownership

Funds ownership: 93.86%95.55% (+1.7%)

1% more repeat investments, than reductions

Existing positions increased: 350 | Existing positions reduced: 345

8% less capital invested

Capital invested by funds: $20B → $18.4B (-$1.56B)

33% less funds holding in top 10

Funds holding in top 10: 32 (-1)

Holders
1,048
Holders Change
+43
Holders Change %
+4.28%
% of All Funds
12.75%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.02%
New
148
Increased
350
Reduced
345
Closed
90
Calls
$74.8M
Puts
$57.4M
Net Calls
+$17.5M
Net Calls Change
+$31.2M
Name Holding Trade Value Shares
Change
Change in
Stake
Vanguard Group
1
Vanguard Group
Pennsylvania
$2.5B +$25.6M +140,450 +1%
BlackRock
2
BlackRock
New York
$1.64B -$98.8M -542,817 -5%
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$1.09B -$129M -708,833 -10%
State Street
4
State Street
Massachusetts
$934M +$28.9M +158,617 +3%
JP Morgan Chase
5
JP Morgan Chase
New York
$719M -$31.2M -171,495 -4%
Boston Partners
6
Boston Partners
Massachusetts
$680M -$22.5M -123,555 -3%
Geode Capital Management
7
Geode Capital Management
Massachusetts
$524M -$1.51M -8,278 -0.3%
Morgan Stanley
8
Morgan Stanley
New York
$467M +$74M +406,658 +18%
Victory Capital Management
9
Victory Capital Management
Texas
$369M -$39.6M -217,552 -9%
Dimensional Fund Advisors
10
Dimensional Fund Advisors
Texas
$335M +$4.38M +24,038 +1%
Grantham, Mayo, Van Otterloo & Co (GMO)
11
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
$315M +$12.7M +69,660 +4%
Wells Fargo
12
Wells Fargo
California
$307M -$6.59M -36,201 -2%
Goldman Sachs
13
Goldman Sachs
New York
$297M +$117M +645,209 +61%
Invesco
14
Invesco
Georgia
$289M -$3.97M -21,790 -1%
EIG
15
EdgePoint Investment Group
Ontario, Canada
$288M +$148M +811,320 +95%
Bank of America
16
Bank of America
North Carolina
$282M -$2.21M -12,137 -0.7%
DSA
17
Davis Selected Advisers
Arizona
$276M +$41.6M +228,271 +17%
Norges Bank
18
Norges Bank
Norway
$230M +$241M +1,322,663 New
Fidelity Investments
19
Fidelity Investments
Massachusetts
$209M -$2.02M -11,118 -0.9%
UBS Group
20
UBS Group
Switzerland
$193M +$82M +450,161 +68%
Northern Trust
21
Northern Trust
Illinois
$187M -$13.6M -74,752 -6%
FMI
22
Fiduciary Management Inc
Wisconsin
$182M -$18.3M -100,613 -9%
MGP
23
M&G plc
United Kingdom
$164M -$26.5M -145,325 -13%
American Century Companies
24
American Century Companies
Missouri
$151M +$258K +1,415 +0.2%
UBS AM
25
UBS AM
Illinois
$147M -$9.96M -54,676 -6%