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Equibles

JANE STREET GROUP, LLC

Position in WST — West Pharmaceutical Services Inc

CIK 1595888 NEW YORK, NY
Back to WST Full portfolio

Position in WST

as of Mar 31, 2026 · filed May 12, 2026
Position Value
$76,478,284
+$16,017,371 QoQ
Shares Held
305,132
+38.9% QoQ
Ownership
0.432%
of shares outstanding
% of Portfolio
0.10%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in WST Over Time

Shares Held

Position Value (USD)

Derivatives in WST

reported options exposure · as of Mar 31, 2026
CallValue
$8,722,272
CallShares
34,800
PutValue
$1,829,672
PutShares
7,300

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Medical Instruments & Supplies

Healthcare · as of Mar 31, 2026

JANE STREET GROUP, LLC holds $433,568,993 across 28 Medical Instruments & Supplies names. WST ranks #2 (17.6% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 MDLN
Medline Inc.
 1,996,552 $88,846,563
2 WST
West Pharmaceutical Services Inc
This page 		305,132 $76,478,284
3 ISRG
Intuitive Surgical Inc
 118,543 $54,647,136
4 AVTR
Avantor, Inc.
 4,966,462 $38,937,061
5 BDX
Becton Dickinson & Co
 205,447 $32,302,431
6 ALC
Alcon Inc
 369,547 $27,845,365
7 TFX
Teleflex Inc
 173,278 $20,725,781
8 NVST
Envista Holdings Corp
 639,850 $16,232,993

All Filings in WST

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $8,722,272 34,800
2026-03-31 $76,478,284 305,132
2026-03-31 $1,829,672 7,300
2025-12-31 $1,183,102 4,300
2025-12-31 $6,520,818 23,700
2025-12-31 $60,460,913 219,746
2025-09-30 $9,508,149 36,245
2025-09-30 $4,013,649 15,300
2025-09-30 $23,294,904 88,800
2025-06-30 $27,743,840 126,800
2025-06-30 $4,113,440 18,800
2025-06-30 $7,796,500 35,633
2025-03-31 $11,283,552 50,400
2025-03-31 $19,276,068 86,100
2024-12-31 $28,104,648 85,800
2024-12-31 $6,965,890 21,266
2024-12-31 $8,451,048 25,800
2024-09-30 $52,467,968 174,800
2024-09-30 $19,572,532 65,207
2024-09-30 $35,148,736 117,100
2024-06-30 $23,232,534 70,532
2024-03-31 $2,586,359 6,536
2023-12-31 $23,655,421 67,180
2023-09-30 $9,720,189 25,906
2023-06-30 $5,665,527 14,813
2023-03-31 $10,596,783 30,585
2022-12-31 $3,005,654 12,771
2022-09-30 $10,127,175 41,154
2022-06-30 $6,093,964 20,154
2022-03-31 $16,181,974 39,400
2022-03-31 $12,046,944 29,332
2022-03-31 $10,883,815 26,500
2021-12-31 $28,281,303 60,300
2021-12-31 $6,619,606 14,114
2021-12-31 $7,082,051 15,100
2021-09-30 $9,965,651 23,474
2021-09-30 $23,222,338 54,700
2021-09-30 $11,759,758 27,700
2021-06-30 $11,491,200 32,000
2021-06-30 $4,740,120 13,200
2021-06-30 $9,179,313 25,562
2021-03-31 $9,510,356 33,751
2020-12-31 $1,637,815 5,781
2020-12-31 $679,944 2,400
2020-09-30 $2,336,650 8,500
2020-09-30 $797,210 2,900
2020-09-30 $2,121,677 7,718
2020-06-30 $1,749,209 7,700
2020-06-30 $454,340 2,000
2020-03-31 $2,168,192 14,241

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