Filed: 8/14/2026ACC: 0001012975-26-000794
📋 What this filing means
ARCH VENTURE MANAGEMENT, LLC filed this quarterly 13F‑HR report disclosing 12 equity positions with a total reported market value of $1.10B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
12
Positions
$1.10B
Total AUM (reported)
61.04M
Total Shares
Allocation by class
COM$876.98M79.7%
COMMON STOCK$136.60M12.4%
COM NEW$45.53M4.1%
COM SHS$32.80M3.0%
CL A COM$8.35M0.8%
Portfolio Concentration
Top 3$486.67M44.2%
4–10$605.53M55.0%
11–25$8.06M0.7%
Top 3 weight
44.2%
Top 10 weight
99.3%
Voting Authority Distribution
Total shares with voting rights: 61.04M
Sole
Full voting authority
0.00
shares
% of voting shares0.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
61.04M
shares
% of voting shares100.0%
Investment Discretion (by position count)
Sole12
Shared0
Other0
Dominant voting typeNone · 100.0% of voting shares
Institutional Holdings12
Rows:
PARABILIS MEDICINES INC
SOLEShares6.41M
TypeSH
Market value$175.52M
15.95%
Sole
0.00
Shared
0.00
None
6.41M
BEAM THERAPEUTICS INC
SOLEShares4.54M
TypeSH
Market value$155.77M
14.16%
Sole
0.00
Shared
0.00
None
4.54M
RAPPORT THERAPEUTICS INC
SOLEShares3.73M
TypeSH
Market value$155.38M
14.12%
Sole
0.00
Shared
0.00
None
3.73M
SEAPORT THERAPEUTICS INC
SOLEShares6.29M
TypeSH
Market value$136.60M
12.42%
Sole
0.00
Shared
0.00
None
6.29M
ERASCA INC
SOLEShares7.09M
TypeSH
Market value$129.92M
11.81%
Sole
0.00
Shared
0.00
None
7.09M
VIR BIOTECHNOLOGY INC
SOLEShares12.69M
TypeSH
Market value$129.35M
11.76%
Sole
0.00
Shared
0.00
None
12.69M
MAZE THERAPEUTICS INC
SOLEShares4.12M
TypeSH
Market value$122.98M
11.18%
Sole
0.00
Shared
0.00
None
4.12M
LYELL IMMUNOPHARMA INC
SOLEShares3.25M
TypeSH
Market value$45.53M
4.14%
Sole
0.00
Shared
0.00
None
3.25M
GENERATE BIOMEDICINES INC
SOLEShares1.94M
TypeSH
Market value$32.80M
2.98%
Sole
0.00
Shared
0.00
None
1.94M
10X GENOMICS INC
SOLEShares217.83K
TypeSH
Market value$8.35M
0.76%
Sole
0.00
Shared
0.00
None
217.83K
BOUNDLESS BIO INC
SOLEShares2.69M
TypeSH
Market value$6.74M
0.61%
Sole
0.00
Shared
0.00
None
2.69M
GOSSAMER BIO INC
SOLEShares8.06M
TypeSH
Market value$1.33M
0.12%
Sole
0.00
Shared
0.00
None
8.06M
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
PARABILIS MEDICINES INCSOLE | COM | 6.41M | SH | $175.52M 15.95% | 0.00 | 0.00 | 6.41M |
BEAM THERAPEUTICS INCSOLE | COM | 4.54M | SH | $155.77M 14.16% | 0.00 | 0.00 | 4.54M |
RAPPORT THERAPEUTICS INCSOLE | COM | 3.73M | SH | $155.38M 14.12% | 0.00 | 0.00 | 3.73M |
SEAPORT THERAPEUTICS INCSOLE | COMMON STOCK | 6.29M | SH | $136.60M 12.42% | 0.00 | 0.00 | 6.29M |
ERASCA INCSOLE | COM | 7.09M | SH | $129.92M 11.81% | 0.00 | 0.00 | 7.09M |
VIR BIOTECHNOLOGY INCSOLE | COM | 12.69M | SH | $129.35M 11.76% | 0.00 | 0.00 | 12.69M |
MAZE THERAPEUTICS INCSOLE | COM | 4.12M | SH | $122.98M 11.18% | 0.00 | 0.00 | 4.12M |
LYELL IMMUNOPHARMA INCSOLE | COM NEW | 3.25M | SH | $45.53M 4.14% | 0.00 | 0.00 | 3.25M |
GENERATE BIOMEDICINES INCSOLE | COM SHS | 1.94M | SH | $32.80M 2.98% | 0.00 | 0.00 | 1.94M |
10X GENOMICS INCSOLE | CL A COM | 217.83K | SH | $8.35M 0.76% | 0.00 | 0.00 | 217.83K |
BOUNDLESS BIO INCSOLE | COM | 2.69M | SH | $6.74M 0.61% | 0.00 | 0.00 | 2.69M |
GOSSAMER BIO INCSOLE | COM | 8.06M | SH | $1.33M 0.12% | 0.00 | 0.00 | 8.06M |