Rock Springs Capital Management LP
Position in AGIO — Agios Pharmaceuticals, Inc.
CIK 1595725
Baltimore, MD
Position in AGIO
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$27,035,684
+$5,282,468 QoQ
Shares Held
799,163
0.0% QoQ
Ownership
1.34%
of shares outstanding
% of Portfolio
1.60%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in AGIO Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026Rock Springs Capital Management LP holds $1,246,050,197 across 66 Biotechnology names. AGIO ranks #14 (2.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | RVMD |
Revolution Medicines, Inc.
|
1,209,465 | $117,620,471 | |
| 2 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
170,999 | $89,512,846 | |
| 3 | MIRM |
Mirum Pharmaceuticals, Inc.
|
811,294 | $74,947,339 | |
| 4 | ARGX |
Argenx SE
|
98,500 | $71,929,625 | |
| 5 | RYTM |
Rhythm Pharmaceuticals, Inc.
|
689,748 | $59,987,383 | |
| 6 | INSM |
INSMED Inc
|
314,300 | $51,394,336 | |
| 7 | ASND |
Ascendis Pharma A/S
|
194,000 | $44,373,620 | |
| 8 | XENE |
Xenon Pharmaceuticals Inc.
|
763,020 | $44,369,613 |
All Filings in AGIO
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $27,035,684 | 799,163 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $21,753,216 | 799,163 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $38,475,875 | 958,542 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $32,918,918 | 989,745 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $10,025,874 | 342,180 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $15,479,885 | 471,086 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $31,073,853 | 699,389 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $45,028,534 | 1,044,261 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $51,594,126 | 1,764,505 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $47,928,892 | 2,152,173 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $67,074,009 | 2,710,061 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $76,072,249 | 2,686,167 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $61,137,066 | 2,661,605 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $84,144,303 | 2,996,592 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $86,476,535 | 3,057,869 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $64,923,913 | 2,928,458 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $77,586,155 | 2,665,275 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $86,994,563 | 2,646,625 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $117,967,660 | 2,556,179 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $141,870,113 | 2,574,308 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $131,351,504 | 2,543,600 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $109,344,164 | 2,523,521 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $55,352,815 | 1,581,509 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $63,091,425 | 1,179,720 | Shares | Sole | 2020-08-14 | |
| 2020-03-31 | $37,449,140 | 1,055,500 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||