Terminal · Institutions

Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.

ARCH Venture Management, LLC 13F Holdings -- Portfolio & Top Positions (2026-03-31)

ARCH Venture Management, LLC (CIK 1274403) reported $677.1M across 9 reported positions in its SEC 13F filing for 2026-03-31. Largest positions: MAZE ($123.0M, 18.16%), RAPP ($116.7M, 17.23%), VIR ($115.7M, 17.09%), ERAS ($114.7M, 16.95%), BEAM ($108.2M, 15.98%). Source: SEC Form 13F.

RankTickerCompanyValue% PortfolioSharesAction
1MAZEMAZE THERAPEUTICS INC$123.0M18.16%4.1MHold
2RAPPRAPPORT THERAPEUTICS INC$116.7M17.23%3.7MHold
3VIRVIR BIOTECHNOLOGY INC$115.7M17.09%12.9MHold
4ERASERASCA INC$114.7M16.95%7.1MTrimmed
5BEAMBEAM THERAPEUTICS INC$108.2M15.98%4.5MHold
6LYELLYELL IMMUNOPHARMA INC$65.1M9.62%3.2MAdded
7GENERATE BIOMEDICINES INC$24.3M3.59%1.9MNew
8TXG10X GENOMICS INC$4.6M0.68%217,834Trimmed
9GOSSGOSSAMER BIO INC$2.6M0.39%8.1MHold
10QTTBQ32 BIO INC$2.1M0.30%320,482Hold

Source: SEC Form 13F filings · as of 2026-03-31