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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
Lazard Asset Management
501
Lazard Asset Management
New York
$687K
MCM
502
MAI Capital Management
Ohio
$686K
KWA
503
Kingswood Wealth Advisors
California
$686K
NMIMC
504
Northwestern Mutual Investment Management Company
Wisconsin
$679K
FFM
505
Forum Financial Management
Illinois
$678K
CAU
506
Caxton Associates (UK)
$672K
GI
507
GAMMA Investing
California
$669K
ASN
508
Advisory Services Network
Georgia
$655K
MAS
509
Meeder Advisory Services
Ohio
$652K
KSB
510
Kennebec Savings Bank
Maine
$647K
JF
511
Jericho Financial
Ohio
$643K
SAM
512
Shell Asset Management
Netherlands
$642K
PA
513
Parallel Advisors
California
$641K
MWM
514
Meridian Wealth Management
Kentucky
$639K
TA
515
Tectonic Advisors
Texas
$633K
GWCM
516
Godshalk Welsh Capital Management
Pennsylvania
$629K
FAB
517
First American Bank
Illinois
$628K
OFS
518
OMC Financial Services
New York
$625K
AIM
519
Acropolis Investment Management
Missouri
$621K
SC
520
Syon Capital
California
$616K
CPIG
521
Chicago Partners Investment Group
Illinois
$614K
VCM
522
Voleon Capital Management
California
$610K
BAM
523
Blueshift Asset Management
New Jersey
$605K
MCA
524
Martin Capital Advisors
Texas
$599K
HCA
525
Harbor Capital Advisors
Illinois
$596K