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Quest Diagnostics

982 hedge funds and large institutions have $19.9B invested in Quest Diagnostics in 2025 Q3 according to their latest regulatory filings, with 116 funds opening new positions, 349 increasing their positions, 336 reducing their positions, and 83 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

2.35% less ownership

Funds ownership: 95.95%93.6% (-2.4%)

12% less call options, than puts

Call options by funds: $98.2M | Put options by funds: $112M

25% less funds holding in top 10

Funds holding in top 10: 43 (-1)

Holders
982
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$98.2M
Puts
$112M
Net Calls
Net Calls Change

Top Buyers

1 +$190M
2 +$162M
3 +$82.7M
4
Goldman Sachs
Goldman Sachs
New York
+$79.7M
5
Marshall Wace
Marshall Wace
United Kingdom
+$67.1M

Top Sellers

1 -$116M
2 -$88.7M
3 -$79.3M
4
UBS AM
UBS AM
Illinois
-$60M
5
UBS Group
UBS Group
Switzerland
-$59.9M
Name Holding Trade Value Shares
Change
Change in
Stake
Allianz Asset Management
76
Allianz Asset Management
Germany
$30.1M
Mackenzie Financial
77
Mackenzie Financial
Ontario, Canada
$30M
BSA
78
Braun Stacey Associates
New York
$29.4M
VOYA Investment Management
79
VOYA Investment Management
Georgia
$29.2M
WIC
80
Willis Investment Counsel
Georgia
$28.9M
AIM
81
Achmea Investment Management
Netherlands
$27.5M
Focus Partners Wealth
82
Focus Partners Wealth
Massachusetts
$26.9M
Citadel Advisors
83
Citadel Advisors
Florida
$24.9M
Manulife (Manufacturers Life Insurance)
84
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$24.3M
Natixis Advisors
85
Natixis Advisors
Massachusetts
$24.3M
VRS
86
Virginia Retirement Systems
Virginia
$23.6M
TD Asset Management
87
TD Asset Management
Ontario, Canada
$23M
AAMU
88
AEGON Asset Management (UK)
United Kingdom
$22.6M
WP
89
Woodline Partners
California
$22.4M
Treasurer of the State of North Carolina
90
Treasurer of the State of North Carolina
North Carolina
$21.7M
Stifel Financial
91
Stifel Financial
Missouri
$21.5M
Robeco Institutional Asset Management
92
Robeco Institutional Asset Management
Netherlands
$21.2M
TAM
93
Tocqueville Asset Management
New York
$20.9M
SAM
94
Silvercrest Asset Management
New York
$20.8M
Rockefeller Capital Management
95
Rockefeller Capital Management
New York
$20.1M
MWM
96
Moran Wealth Management
Florida
$20M
Aberdeen Group
97
Aberdeen Group
United Kingdom
$20M
P
98
&Partners
Tennessee
$19.3M
Russell Investments Group
99
Russell Investments Group
United Kingdom
$19M
William Blair & Company
100
William Blair & Company
Illinois
$18.7M