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BOSTON, MA · CIK 0001346824
New positions
24
Added to
17
Trimmed
2
Exited
10
RA CAPITAL MANAGEMENT, L.P. (BOSTON, MA) reported a portfolio value of $9.44B across 85 positions in their Q1 2026 SEC 13F filing (period ending 2026-03-31). The top 10 positions account for 61.3% of the portfolio.
Top 30 holdings by portfolio weight. Block width = holding percentage. Green = new/increased, red = reduced, gray = unchanged.
| # | Stock | Value↓ | Weight | Change |
|---|---|---|---|---|
| 1 | ASNDUSDASCENDIS PHARMA A/S - ADR | $2.35B | 24.92% | - |
| 2 | PCVXVAXCYTE INC | $666.79M | 7.07% | +7.0% |
| 3 | RYTMRHYTHM PHARMACEUTICALS INC | $579.81M | 6.14% | - |
| 4 | TYRATYRA BIOSCIENCES INC | $467.21M | 4.95% | - |
| 5 | SIONSIONNA THERAPEUTICS INC | $397.09M | 4.21% | - |
| 6 | EWTXEDGEWISE THERAPEUTICS INC | $328.50M | 3.48% | - |
| 7 | NAMSNEWAMSTERDAM PHARMA CO NV | $305.70M | 3.24% | - |
| 8 | NUVLNUVALENT INC-A | $259.62M | 2.75% | +34.8% |
| 9 | DNTHDIANTHUS THERAPEUTICS INC | $219.18M | 2.32% | +62.0% |
| 10 | MLYSMINERALYS THERAPEUTICS INC | $208.40M | 2.21% | +5.0% |
| Stock | Value | Shares |
|---|---|---|
| SGPSPYGLASS PHARMA INC | $207.83M | 8,021,117 |
| ZLABZAI LAB LTD-ADR | $107.35M | 5,707,262 |
| SRPTSAREPTA THERAPEUTICS INC | $84.92M | 3,902,596 |
| DMRADAMORA THERAPEUTICS INC | $62.14M | 2,399,310 |
| XNCRXENCOR INC | $59.06M | 4,897,237 |
| IPSCCENTURY THERAPEUTICS INC | $40.13M | 17,754,430 |
| MIRMMIRUM PHARMACEUTICALS INC | $29.43M | 318,554 |
| BIOABIOAGE LABS INC | $28.87M | 1,650,648 |
| AKTSAKTIS ONCOLOGY INC | $26.89M | 1,503,084 |
| ALXOALX ONCOLOGY HOLDINGS INC | $26.09M | 13,011,849 |
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