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Quest Diagnostics

1,061 hedge funds and large institutions have $20.1B invested in Quest Diagnostics in 2026 Q1 according to their latest regulatory filings, with 121 funds opening new positions, 349 increasing their positions, 380 reducing their positions, and 87 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding in top 10

Funds holding in top 10:

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

1% more funds holding

Funds holding: 1,0471,061 (+14)

8% less repeat investments, than reductions

Existing positions increased: 349 | Existing positions reduced: 380

2.22% less ownership

Funds ownership: 95.54%93.32% (-2.2%)

Holders
1,061
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
4
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$96.9M
Puts
$40.5M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
Walleye Capital
626
Walleye Capital
New York
$435K
KMWM
627
Keudell/Morrison Wealth Management
Oregon
$432K
DS
628
DRW Securities
Illinois
$426K
MBT
629
Montecito Bank & Trust
California
$422K
HIP
630
HUB Investment Partners
Texas
$417K
CAG
631
Crestwood Advisors Group
Massachusetts
$416K
MC
632
Moors & Cabot
Massachusetts
$415K
S
633
SimplyRich
California
$413K
TRCT
634
Tower Research Capital (TRC)
New York
$407K
Koshinski Asset Management
635
Koshinski Asset Management
Illinois
$404K
GC
636
Guggenheim Capital
Illinois
$400K
JGUA
637
John G. Ullman & Associates
New York
$398K
SWP
638
Sagespring Wealth Partners
Tennessee
$397K
GWA
639
Gratus Wealth Advisors
Virginia
$394K
FHA
640
Flagship Harbor Advisors
Massachusetts
$394K
BPWM
641
BCS Private Wealth Management
New Jersey
$392K
CCG
642
Cypress Capital Group
Florida
$392K
HIC
643
Holderness Investments Company
North Carolina
$392K
CIC
644
Chilton Investment Company
Connecticut
$392K
CFS
645
Commonwealth Financial Services
West Virginia
$388K
EFM
646
E Fund Management
China
$384K
BCM
647
Brookstone Capital Management
Illinois
$382K
FAT
648
First American Trust
California
$375K
SCA
649
Snowden Capital Advisors
New York
$375K
SLA
650
Silver Lake Advisory
Utah
$374K