§ 13F · FUND PROFILE
Siren, L.L.C..
Institutional filer · behavioral pattern: Other. Summary pending.
AUM · $2.6B (13F)Positions · 117Turnover · — · Q1Filed · May 14, 2026
CONCENTRATION
—
Top 10 holdings
NEW BUYS
0
+$320M deployed
EXITS
0
No exits
SECTOR SHIFT
—
No prior quarter data
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q1 2026
FILED MAY 14, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q1 |
|---|---|---|---|---|---|---|
| 1 | SRRK | Scholar Rock Holding Corp | 10.83M | $532M | 14.8% | ±0% |
| 2 | KYMR | Kymera Therapeutics Inc | 3.19M | $265M | 7.4% | −3% |
| 3 | ERAS | Erasca Inc | 11.24M | $182M | 5.0% | +28% |
| 4 | EWTX | Edgewise Therapeutics Inc | 4.43M | $140M | 3.9% | −2% |
| 5 | ONC | BeOne Medicines AG | 465K | $138M | 3.8% | −7% |
| 6 | TNGX | Tango Therapeutics Inc | 5.66M | $118M | 3.3% | −31% |
| 7 | BCAX | Bicara Therapeutics Inc | 5.80M | $115M | 3.2% | +11% |
| 8 | RVMD | Revolution Medicines Inc | 1.11M | $108M | 3.0% | −17% |
| 9 | ARWR | Arrowhead Pharmaceuticals Inc | 1.62M | $101M | 2.8% | +8% |
| 10 | MANE | Veradermics Inc | 1.51M | $95M | 2.6% | NEW |
§ 02 · SECTOR ALLOCATION
Where the money is
Sector data pending
§ 03 · THE SIREN, SIGNAL
AC read
Siren, L.L.C. is a Other fund managing $2.6 billion in assets. The fund runs a portfolio of 117 positions.
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
2 FILINGS
Q1 2026
Steady book
+0 buys · −0 exits · 0 changed
Q4 2025
Steady book
+0 buys · −0 exits · 0 changed
Q3 2025
Steady book
+0 buys · −0 exits · 0 changed
Q2 2025
Steady book
+0 buys · −0 exits · 0 changed