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Quest Diagnostics

965 hedge funds and large institutions have $17.3B invested in Quest Diagnostics in 2025 Q1 according to their latest regulatory filings, with 143 funds opening new positions, 316 increasing their positions, 336 reducing their positions, and 62 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

more ownership

Funds ownership:

0% more funds holding in top 10

Funds holding in top 10: 11 (0)

6% less repeat investments, than reductions

Existing positions increased: 316 | Existing positions reduced: 336

39% less call options, than puts

Call options by funds: $83.5M | Put options by funds: $136M

Holders
965
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
1
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$83.5M
Puts
$136M
Net Calls
Net Calls Change

Top Sellers

1 -$105M
2 -$56.7M
3 -$51.4M
4
Marshall Wace
Marshall Wace
United Kingdom
-$51.4M
5
Prudential Financial
Prudential Financial
New Jersey
-$44.8M
Name Holding Trade Value Shares
Change
Change in
Stake
726
$228K
727
$227K
728
$227K
729
$226K
730
$225K
731
$224K
732
$223K
733
$221K
734
$221K
735
$220K
736
$220K
737
$220K
738
$217K
739
$216K
740
$213K
741
$213K
742
$213K
743
$212K
744
$210K
745
$209K
746
$208K
747
$206K
748
$204K
749
$203K
750
$203K