Rock Springs Capital Management LP
Top Portfolio Positions
98 positions ·
$1,690,777,301 total
· as of Mar 31, 2026
| Ticker | Company | Shares | Value (USD) | % of Portfolio | Open |
|---|---|---|---|---|---|
| RVMD |
Revolution Medicines, Inc.
Healthcare
|
1,209,465 | $117,620,471 | 6.96% | |
| LLY |
ELI LILLY & Co
Healthcare
|
98,700 | $90,781,299 | 5.37% | |
| MDGL |
Madrigal Pharmaceuticals, Inc.
Healthcare
|
170,999 | $89,512,846 | 5.29% | |
| MIRM |
Mirum Pharmaceuticals, Inc.
Healthcare
|
811,294 | $74,947,339 | 4.43% | |
| ARGX |
Argenx SE
Healthcare
|
98,500 | $71,929,625 | 4.25% | |
| RYTM |
Rhythm Pharmaceuticals, Inc.
Healthcare
|
689,748 | $59,987,383 | 3.55% | |
| INSM |
INSMED Inc
Healthcare
|
314,300 | $51,394,336 | 3.04% | |
| ASND |
Ascendis Pharma A/S
Healthcare
|
194,000 | $44,373,620 | 2.62% | |
| XENE |
Xenon Pharmaceuticals Inc.
Healthcare
|
763,020 | $44,369,613 | 2.62% | |
| TVTX |
Travere Therapeutics, Inc.
Healthcare
|
1,477,954 | $43,910,013 | 2.60% |
Portfolio Trend
25 quarters · across all stocks
Holdings in CLDX
Shares Held
Position Value (USD)
17 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $20,626,564 | 650,270 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $18,809,332 | 692,538 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $18,666,188 | 721,538 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $16,537,488 | 812,653 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $14,749,651 | 812,653 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $30,884,539 | 1,222,182 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $37,517,414 | 1,103,778 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $51,776,767 | 1,398,994 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $57,590,604 | 1,372,185 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $38,456,160 | 969,646 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $13,762,779 | 500,101 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $14,305,396 | 421,615 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $15,165,713 | 421,504 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $18,786,433 | 421,504 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $11,851,288 | 421,604 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $9,044,459 | 335,477 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $3,314,617 | 97,317 | Shares | Sole | 2022-05-16 | |
| No 13F history on record for this holder in this stock. | ||||||