ARCH Venture Management, LLC

All Holdings — 2025 Q4

Portfolio Concentration Analytics: 7.6
Risk-based ENB:
Total Positions
10
Quarter
2025 Q4
Top Holding
MAZE (26.2%)
Top 10 Concentration
100.0%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
1-10 of 10
Stock History Sector / Type Port % Prev % Rank / Prev Conviction Change % Change Influence Shares Mkt Value Avg Cost Price Held 1st Owned Source Source Date Date Reported
MAZE
MAZE THERAPEUTI...
Healthcare 26.19% 21.70% #1 2
Prev: #3
10.0 no change no change
P
S
4,120,053 $170,693,796 2025 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
BEAM
BEAM THERAPEUTI...
Healthcare 19.31% 22.38% #2
Prev: #2
7.7 no change no change
P
S
4,540,132 $125,852,459 2024 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
RAPP
RAPPORT THERAPE...
Healthcare 17.36% 22.49% #3 2
Prev: #1
6.9 no change no change
P
S
3,728,738 $113,129,911 2024 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
LYEL
LYELL IMMUNOPHA...
Healthcare 13.03% 9.10% #4 1
Prev: #5
5.2 no change no change
P
S
2,759,072 $84,924,236 2025 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
VIR
VIR BIOTECHNOLO...
Healthcare 11.95% 14.98% #5 1
Prev: #4
4.8 no change no change
P
S
12,916,663 $77,887,478 2025 Q2 13F Filing 2025-12-31 2026-02-14 (Est.)
ERAS
ERASCA INC.
Healthcare 6.31% 4.89% #6
Prev: #6
2.5 no change no change
P
S
11,055,554 $41,126,661 2021 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
GOSS
GOSSAMER BIO IN...
Healthcare 3.83% 4.30% #7
Prev: #7
1.5 no change no change
P
S
8,055,916 $24,973,340 2023 Q3 13F Filing 2025-12-31 2026-02-14 (Est.)
TXG
10X GENOMICS IN...
Healthcare 1.85% #8
Prev: #—
2.7 737,539 no change
NEW
737,539 $12,029,261 2025 Q4 13F Filing 2025-12-31 2026-02-14 (Est.)
QTTB
Q32 BIO INC.
Healthcare 0.16% 0.13% #9 1
Prev: #8
0.1 no change no change
P
S
320,482 $1,064,000 2024 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
CERO
CERO THERAPEUTI...
Healthcare 0.00% 0.02%
Sold All 😨
(Was: #9)
0.3 -22,389 -100.0%
CLOSED
$— 2025 Q1 13F Filing 2025-12-31 2026-02-14 (Est.)
Showing 1-10 of 10 holdings

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