AQR CAPITAL MANAGEMENT LLC
Position in WST — West Pharmaceutical Services Inc
CIK 1167557
Greenwich, CT
Position in WST
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$66,906,839
-$75,514,149 QoQ
Shares Held
266,944
-48.4% QoQ
Ownership
0.378%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 98.39404519299929.ToString("F0")%
Shared 0.ToString("F0")%
None 1.605954807000719.ToString("F0")%
Common Shares in WST Over Time
Shares Held
Position Value (USD)
Position in Medical Instruments & Supplies
Healthcare · as of Mar 31, 2026AQR CAPITAL MANAGEMENT LLC holds $1,257,095,830 across 29 Medical Instruments & Supplies names. WST ranks #7 (5.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | COO |
Cooper Companies, Inc.
|
3,727,187 | $266,493,868 | |
| 2 | ATR |
Aptargroup, Inc.
|
1,229,278 | $154,913,610 | |
| 3 | ALGN |
Align Technology Inc
|
893,206 | $153,122,301 | |
| 4 | ISRG |
Intuitive Surgical Inc
|
258,884 | $119,342,927 | |
| 5 | BDX |
Becton Dickinson & Co
|
757,930 | $119,169,332 | |
| 6 | RMD |
Resmed Inc
|
349,840 | $78,532,077 | |
| 7 | WST |
West Pharmaceutical Services Inc
This page
|
266,944 | $66,906,839 | |
| 8 | NVST |
Envista Holdings Corp
|
2,618,117 | $66,421,623 |
All Filings in WST
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $66,906,839 | 266,944 | Shares | Other | 2026-05-15 | |
| 2025-12-31 | $142,420,988 | 517,631 | Shares | Other | 2026-02-17 | |
| 2025-09-30 | $143,200,435 | 545,879 | Shares | Other | 2025-11-14 | |
| 2025-06-30 | $22,963,057 | 104,950 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $980,816 | 4,381 | Shares | Other | 2025-05-15 | |
| 2024-12-31 | $3,595,953 | 10,978 | Shares | Other | 2025-02-14 | |
| 2024-09-30 | $4,579,540 | 15,257 | Shares | Other | 2024-11-14 | |
| 2024-06-30 | $5,780,135 | 17,548 | Shares | Other | 2024-08-14 | |
| 2024-03-31 | $10,850,367 | 27,420 | Shares | Other | 2024-05-15 | |
| 2023-12-31 | $14,785,165 | 41,989 | Shares | Other | 2024-02-14 | |
| 2023-09-30 | $19,908,641 | 53,060 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $19,528,152 | 51,058 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $17,108,688 | 49,380 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $23,482,516 | 99,777 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $20,792,775 | 84,496 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $28,439,410 | 94,055 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $43,184,102 | 105,145 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $57,469,202 | 122,533 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $61,165,175 | 144,074 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $51,424,914 | 143,205 | Shares | Other | 2021-08-16 | |
| 2021-03-31 | $43,536,982 | 154,507 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $48,908,655 | 172,633 | Shares | Other | 2021-02-16 | |
| 2020-09-30 | $37,178,575 | 135,244 | Shares | Other | 2020-11-16 | |
| 2020-06-30 | $25,943,722 | 114,204 | Shares | Defined | 2020-08-17 | |
| 2020-03-31 | $37,140,321 | 243,943 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||