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Quest Diagnostics

990 hedge funds and large institutions have $19.9B invested in Quest Diagnostics in 2025 Q3 according to their latest regulatory filings, with 115 funds opening new positions, 353 increasing their positions, 339 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:

2.45% less ownership

Funds ownership: 96.11%93.66% (-2.5%)

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
990
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
GCM
501
Graham Capital Management
Connecticut
$700K
SPIA
502
Steward Partners Investment Advisory
New York
$698K
Kovitz Investment Group Partners
503
Kovitz Investment Group Partners
Illinois
$695K
SFI
504
Siemens Fonds Invest
Germany
$688K
Lazard Asset Management
505
Lazard Asset Management
New York
$687K
MCM
506
MAI Capital Management
Ohio
$686K
KWA
507
Kingswood Wealth Advisors
California
$686K
NMIMC
508
Northwestern Mutual Investment Management Company
Wisconsin
$679K
FFM
509
Forum Financial Management
Illinois
$678K
CAU
510
Caxton Associates (UK)
$672K
GI
511
GAMMA Investing
California
$669K
ASN
512
Advisory Services Network
Georgia
$655K
MAS
513
Meeder Advisory Services
Ohio
$652K
KSB
514
Kennebec Savings Bank
Maine
$647K
JF
515
Jericho Financial
Ohio
$643K
SAM
516
Shell Asset Management
Netherlands
$642K
PA
517
Parallel Advisors
California
$641K
MWM
518
Meridian Wealth Management
Kentucky
$639K
TA
519
Tectonic Advisors
Texas
$633K
GWCM
520
Godshalk Welsh Capital Management
Pennsylvania
$629K
FAB
521
First American Bank
Illinois
$628K
OFS
522
OMC Financial Services
New York
$625K
AIM
523
Acropolis Investment Management
Missouri
$621K
AG
524
AIA Group
Hong Kong
$617K
SC
525
Syon Capital
California
$616K