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Quest Diagnostics

962 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, 315 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: 315 | Existing positions reduced: 336

39% less call options, than puts

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

Holders
962
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
376
$1.41M
377
$1.38M
378
$1.36M
379
$1.36M
380
$1.35M
381
$1.35M
382
$1.35M
383
$1.35M
384
$1.32M
385
$1.31M
386
$1.31M
387
$1.3M
388
$1.3M
389
$1.29M
390
$1.29M
391
$1.29M
392
$1.28M
393
$1.28M
394
$1.25M
395
$1.24M
396
$1.23M
397
$1.22M
398
$1.21M
399
$1.2M
400
$1.2M