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West Pharmaceutical

712 hedge funds and large institutions have $15.6B invested in West Pharmaceutical in 2025 Q1 according to their latest regulatory filings, with 91 funds opening new positions, 273 increasing their positions, 261 reducing their positions, and 114 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more ownership

Funds ownership:

less funds holding

Funds holding:

20% less first-time investments, than exits

New positions opened: 91 | Existing positions closed: 114

32% less capital invested

Capital invested by funds: $22.9B → $15.6B (-$7.25B)

70% less funds holding in top 10

Funds holding in top 10: 103 (-7)

Holders
712
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
$98M
Puts
$63M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
476
$336K
477
$336K
478
$336K
479
$334K
480
$331K
481
$331K
482
$330K
483
$330K
484
$329K
485
$327K
486
$324K
487
$316K
488
$314K
489
$312K
490
$311K
491
$311K
492
$309K
493
$307K
494
$306K
495
$304K
496
$301K
497
$298K
498
$298K
499
$297K
500
$296K