WST icon

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
426
$478K
427
$477K
428
$475K
429
$473K
430
$468K
431
$466K
432
$461K
433
$461K
434
$459K
435
$452K
436
$448K
437
$442K
438
$437K
439
$437K
440
$433K
441
$430K
442
$429K
443
$429K
444
$425K
445
$425K
446
$417K
447
$416K
448
$415K
449
$413K
450
$405K