TUDOR INVESTMENT CORP ET AL
Position in WST — West Pharmaceutical Services Inc
CIK 923093
STAMFORD, CT
Position in WST
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$16,395,615
+$5,205,672 QoQ
Shares Held
65,415
+60.8% QoQ
Ownership
0.093%
of shares outstanding
% of Portfolio
0.10%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
18 quarters on record
Voting authority
Sole 50.ToString("F0")%
Shared 50.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 Jun 30, 2025CallValue
$984,600
CallShares
4,500
PutValue
$350,080
PutShares
1,600
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, 2026TUDOR INVESTMENT CORP ET AL holds $253,491,888 across 19 Medical Instruments & Supplies names. WST ranks #4 (6.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | HOLX |
HOLOGIC INC
|
2,196,804 | $166,056,414 | |
| 2 | AVTR |
Avantor, Inc.
|
2,344,437 | $18,380,386 | |
| 3 | ISRG |
Intuitive Surgical Inc
|
37,756 | $17,405,138 | |
| 4 | WST |
West Pharmaceutical Services Inc
This page
|
65,415 | $16,395,615 | |
| 5 | COO |
Cooper Companies, Inc.
|
190,995 | $13,656,142 | |
| 6 | BLCO |
Bausch & Lomb Corp
|
376,446 | $5,985,491 | |
| 7 | MMSI |
Merit Medical Systems Inc
|
60,679 | $4,182,603 | |
| 8 | LMAT |
Lemaitre Vascular Inc
|
33,147 | $3,618,657 |
All Filings in WST
Export CSV
27 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $16,395,615 | 65,415 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $11,189,943 | 40,670 | Shares | Defined | 2026-02-17 | |
| 2025-06-30 | $2,736,750 | 12,508 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $350,080 | 1,600 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $984,600 | 4,500 | Call | Defined | 2025-08-14 | |
| 2025-03-31 | $291,044 | 1,300 | Call | Defined | 2025-05-15 | |
| 2024-12-31 | $393,072 | 1,200 | Call | Defined | 2025-02-14 | |
| 2024-09-30 | $2,011,072 | 6,700 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $1,290,688 | 4,300 | Put | Defined | 2024-11-14 | |
| 2023-12-31 | $19,117,651 | 54,293 | Shares | Defined | 2024-02-14 | |
| 2023-09-30 | $20,563,384 | 54,805 | Shares | Defined | 2023-11-15 | |
| 2023-09-30 | $300,168 | 800 | Call | Defined | 2023-11-15 | |
| 2023-09-30 | $262,647 | 700 | Put | Defined | 2023-11-15 | |
| 2023-06-30 | $382,470 | 1,000 | Put | Defined | 2023-08-14 | |
| 2023-06-30 | $611,952 | 1,600 | Call | Defined | 2023-08-14 | |
| 2023-06-30 | $18,158,528 | 47,477 | Shares | Defined | 2023-08-14 | |
| 2022-12-31 | $4,525,309 | 19,228 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $4,845,315 | 19,690 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $1,458,935 | 4,825 | Shares | Defined | 2022-08-15 | |
| 2021-12-31 | $457,284 | 975 | Shares | Defined | 2022-02-14 | |
| 2021-06-30 | $574,560 | 1,600 | Put | Defined | 2021-08-16 | |
| 2021-06-30 | $855,017 | 2,381 | Shares | Defined | 2021-08-16 | |
| 2021-06-30 | $502,740 | 1,400 | Call | Defined | 2021-08-16 | |
| 2021-03-31 | $877,462 | 3,114 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $687,026 | 2,425 | Shares | Defined | 2021-02-16 | |
| 2020-09-30 | $1,406,663 | 5,117 | Shares | Defined | 2020-11-16 | |
| 2020-03-31 | $327,946 | 2,154 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||