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Quest Diagnostics
DGX

Overview Fund Activity

965 hedge funds and large institutions have $19.2B invested in Quest Diagnostics in 2025 Q2 according to their latest regulatory filings, with 117 funds opening new positions, 358 increasing their positions, 323 reducing their positions, and 83 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
965
Holders Change
+13
Holders Change %
+1.37%
% of All Funds
12.95%
Holding in Top 10
4
Holding in Top 10 Change
+3
Holding in Top 10 Change %
+300%
% of All Funds
0.05%
New
117
Increased
358
Reduced
323
Closed
83
Calls
$88.3M
Puts
$133M
Net Calls
-$44.5M
Net Calls Change
+$7.83M

Top Buyers

1
T. Rowe Price Associates
1
T. Rowe Price Associates
Maryland
$1.29B
2
MGP
2
M&G plc
United Kingdom
$193M
3
Boston Partners
3
Boston Partners
Massachusetts
$545M
4
Squarepoint
4
Squarepoint
New York
$151M
5
JPMorgan Chase & Co
5
JPMorgan Chase & Co
New York
$778M

Top Sellers

1
DSA
1
Davis Selected Advisers
Arizona
$243M
2
Nordea Investment Management
2
Nordea Investment Management
Sweden
$40.5M
3
American Century Companies
3
American Century Companies
Missouri
$143M
4
Victory Capital Management
4
Victory Capital Management
Texas
$505M
5
Marshall Wace
5
Marshall Wace
United Kingdom
$36.8M
Name Holding Trade Value Shares
Change 		Shares
Change %
Vanguard Group
1
Vanguard Group
Pennsylvania
$2.56B +$53.3M +296,860 +2%
BlackRock
2
BlackRock
New York
$1.85B +$38.7M +215,665 +2%
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$1.29B +$217M +1,210,459 +20%
State Street
4
State Street
Massachusetts
$931M +$1.46M +8,140 +0.2%
JPMorgan Chase & Co
5
JPMorgan Chase & Co
New York
$778M +$101M +561,722 +15%
Boston Partners
6
Boston Partners
Massachusetts
$545M +$133M +744,102 +32%
Geode Capital Management
7
Geode Capital Management
Massachusetts
$534M +$37.3M +208,261 +8%
Victory Capital Management
8
Victory Capital Management
Texas
$505M -$58.2M -324,301 -10%
Morgan Stanley
9
Morgan Stanley
New York
$385M +$64.7M +359,986 +20%
Dimensional Fund Advisors
10
Dimensional Fund Advisors
Texas
$342M -$2.01M -11,205 -0.6%
Wells Fargo
11
Wells Fargo
California
$330M +$11.5M +64,117 +4%
Grantham, Mayo, Van Otterloo & Co (GMO)
12
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
$314M -$46.5M -258,593 -13%
Invesco
13
Invesco
Georgia
$298M +$68.6M +381,619 +30%
Bank of America
14
Bank of America
North Carolina
$287M +$76.6M +426,399 +36%
Wellington Management Group
15
Wellington Management Group
Massachusetts
$287M -$28.6M -159,049 -9%
DSA
16
Davis Selected Advisers
Arizona
$243M -$186M -1,033,882 -43%
Norges Bank
17
Norges Bank
Norway
$238M +$238M +1,325,624 New
AllianceBernstein
18
AllianceBernstein
Tennessee
$223M +$11.5M +64,283 +5%
Fidelity Investments
19
Fidelity Investments
Massachusetts
$222M +$45.6M +254,044 +26%
UBS AM
20
UBS AM
Illinois
$219M +$36.5M +203,471 +20%
FMI
21
Fiduciary Management Inc
Wisconsin
$213M -$11.9M -66,084 -5%
Northern Trust
22
Northern Trust
Illinois
$212M +$1.18M +6,593 +0.6%
MGP
23
M&G plc
United Kingdom
$193M +$139M +771,824 +257%
UBS Group
24
UBS Group
Switzerland
$176M +$6.6M +36,769 +4%
Royal Bank of Canada
25
Royal Bank of Canada
Ontario, Canada
$160M +$70.5M +392,474 +79%
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