ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
Position in CPRX — Catalyst Pharmaceuticals, Inc.
CIK 1164508
BOSTON, MA
Position in CPRX
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$23,653,599
-$14,092,035 QoQ
Shares Held
955,315
-40.9% QoQ
Ownership
0.781%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2020
17 quarters on record
Voting authority
Sole 97%
Shared 0%
None 3%
Common Shares in CPRX Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026ARROWSTREET CAPITAL, LIMITED PARTNERSHIP holds $1,767,735,657 across 48 Biotechnology names. CPRX ranks #15 (1.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
638,950 | $285,316,733 | |
| 2 | INCY |
Incyte Corp
|
2,830,799 | $266,434,801 | |
| 3 | EXEL |
Exelixis, Inc.
|
4,834,625 | $207,357,066 | |
| 4 | GMAB |
Genmab A/S
|
4,975,324 | $133,487,942 | |
| 5 | REGN |
Regeneron Pharmaceuticals, Inc.
|
171,571 | $132,562,617 | |
| 6 | HALO |
Halozyme Therapeutics, Inc.
|
1,918,149 | $123,969,969 | |
| 7 | RPRX |
Royalty Pharma plc
|
2,010,398 | $96,438,792 | |
| 8 | IONS |
Ionis Pharmaceuticals Inc
|
737,859 | $55,405,832 |
All Filings in CPRX
Export CSV
17 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $23,653,599 | 955,315 | Shares | Defined | 2026-05-14 | |
| 2025-12-31 | $37,745,634 | 1,617,208 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $25,704,047 | 1,304,774 | Shares | Defined | 2025-11-13 | |
| 2025-06-30 | $26,552,619 | 1,223,623 | Shares | Defined | 2025-08-13 | |
| 2025-03-31 | $25,099,453 | 1,035,029 | Shares | Defined | 2025-05-14 | |
| 2024-12-31 | $14,570,432 | 698,152 | Shares | Defined | 2025-02-12 | |
| 2024-09-30 | $5,996,722 | 301,646 | Shares | Defined | 2024-11-14 | |
| 2024-03-31 | $205,960 | 12,921 | Shares | Defined | 2024-05-15 | |
| 2023-09-30 | $1,691,531 | 144,699 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $832,675 | 61,955 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $2,781,908 | 167,787 | Shares | Defined | 2023-05-15 | |
| 2022-06-30 | $137,031 | 19,548 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $2,612,601 | 315,151 | Shares | Defined | 2022-05-13 | |
| 2021-12-31 | $1,191,851 | 176,049 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $163,240 | 30,800 | Shares | Defined | 2021-11-12 | |
| 2020-12-31 | $986,275 | 295,292 | Shares | Defined | 2021-02-12 | |
| 2020-06-30 | $292,908 | 63,400 | Shares | Defined | 2020-08-12 | |
| No filing history on record for this holder in this stock. | ||||||