account_balance
Investment manager · 13F filer · SEC CIK 2005245
Siren, L.L.C.
Reported value$4.93Bas of Jun 30, 2026
Positions115 25 new, 10 sold out
Top 10 weight45%SRRK alone is 11%
FiledAug 1344 days after quarter end
Portfolio · as of Jun 30, 2026
Where the money is
New or addedTrimmedHeld
SRRK
Scholar Rock Holding Corp
10.7%Trimmed
KYMR
Kymera Therapeutics Inc
6.8%Trimmed
ERAS
Erasca Inc
4.2%
MANE
Veradermics Inc
4.1%Added
TNGX
Tango Therapeutics Inc
3.9%Added
RVMD
Revolution Medicines Inc
3.4%Trimmed
BCAX
Bicara Therapeutics Inc
3.4%Trimmed
ARWR
Arrowhead Pharmaceuticals Inc
2.8%Added
ONC
BeOne Medicines AG
2.7%
EWTX
Edgewise Therapeutics Inc
2.6%Trimmed
105 others
55.2%
Box size is the share of the fund's reported holdings. 13F only covers US-listed stocks, so foreign holdings and short positions are missing.
What changed