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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
Citigroup
51
Citigroup
New York
$60.9M
Schroder Investment Management Group
52
Schroder Investment Management Group
United Kingdom
$59.4M
ACM
53
Advisors Capital Management
New Jersey
$56.7M
BNP Paribas Asset Management
54
BNP Paribas Asset Management
France
$54.2M
Sumitomo Mitsui Trust Group
55
Sumitomo Mitsui Trust Group
Japan
$53.1M
8KM
56
8 Knots Management
Texas
$52.5M
RhumbLine Advisers
57
RhumbLine Advisers
Massachusetts
$52.3M
Macquarie Group
58
Macquarie Group
Australia
$51.7M
Barclays
59
Barclays
United Kingdom
$47.9M
RI
60
RTW Investments
New York
$47.6M
National Pension Service
61
National Pension Service
South Korea
$44.8M
Mitsubishi UFJ Asset Management
62
Mitsubishi UFJ Asset Management
Japan
$42.8M
BNP Paribas Financial Markets
63
BNP Paribas Financial Markets
France
$42.2M
Balyasny Asset Management
64
Balyasny Asset Management
Illinois
$42.2M
BG
65
Bahl & Gaynor
Ohio
$41.3M
HSBC Holdings
66
HSBC Holdings
United Kingdom
$40.5M
Pictet Asset Management
67
Pictet Asset Management
Switzerland
$40M
Bank of Montreal
68
Bank of Montreal
Ontario, Canada
$38.6M
QCM
69
Quantinno Capital Management
New York
$36.9M
Universal-Beteiligungs- und Servicegesellschaft
70
Universal-Beteiligungs- und Servicegesellschaft
Germany
$35.7M
APG Asset Management
71
APG Asset Management
Netherlands
$34.5M
California State Teachers Retirement System (CalSTRS)
72
California State Teachers Retirement System (CalSTRS)
California
$32.9M
CCM
73
Copeland Capital Management
Pennsylvania
$32.1M
CPC
74
Cookson Peirce & Co
Pennsylvania
$31.2M
Skandinaviska Enskilda Banken (SEB)
75
Skandinaviska Enskilda Banken (SEB)
Sweden
$30.9M