ARCH Venture Management, LLC
CIK 1274403 · Holdings on Mar 31, 2026 · First reported May 15, 2026
Top ten holdings
Q1 2026- MAZE18.16%
- RAPP17.23%
- VIR17.09%
- ERAS16.95%
- BEAM15.98%
- LYEL9.62%
- GENB3.59%
- TXG0.68%
- GOSS0.39%
- QTTB0.30%
Share classes counted separately99.99%
Portfolio value by quarter
What changed this quarter?
Within preview · weight change- ERASWeight increased · +10.64 pp6.31% → 16.95%Shares -3.96M (-35.86%)
- MAZEWeight decreased · -8.03 pp26.19% → 18.16%Shares 0 (0.00%)
- VIRWeight increased · +5.14 pp11.95% → 17.09%Shares 0 (0.00%)
Weight = security value ÷ total reported holdings value. Changes are in percentage points; price moves also affect weights, so they are not trade sizes.
Top 10 holdings 10
USD · B = billion · M = million; expand a row for exact values| # | Security | Value | Weight | Quantity | Weight / quantity change | Activity | |
|---|---|---|---|---|---|---|---|
| 01 | MAZEMAZE THERAPEUTICS INC View history and evidence | $122.98M | 18.16% | 4.12M shares | 26.19% → 18.16%-8.03 pp 0 (0.00%) | Unchanged | ↗▾ |
| 02 | RAPPRAPPORT THERAPEUTICS INC View history and evidence | $116.67M | 17.23% | 3.73M shares | 17.36% → 17.23%-0.13 pp 0 (0.00%) | Unchanged | ↗▾ |
| 03 | VIRVIR BIOTECHNOLOGY INC View history and evidence | $115.73M | 17.09% | 12.92M shares | 11.95% → 17.09%+5.14 pp 0 (0.00%) | Unchanged | ↗▾ |
| 04 | ERASERASCA INC View history and evidence | $114.74M | 16.95% | 7.09M shares | 6.31% → 16.95%+10.64 pp -3.96M (-35.86%) | Reduced | ↗▾ |
| 05 | BEAMBEAM THERAPEUTICS INC View history and evidence | $108.19M | 15.98% | 4.54M shares | 19.31% → 15.98%-3.33 pp 0 (0.00%) | Unchanged | ↗▾ |
| 06 | LYELLYELL IMMUNOPHARMA INCCOM NEW View history and evidence | $65.14M | 9.62% | 3.25M shares | 13.03% → 9.62%-3.41 pp +488.09K (+17.69%) | Added | ↗▾ |
| 07 | GENBGENERATE BIOMEDICINES INCCOM SHS View history and evidence | $24.31M | 3.59% | 1.94M shares | Prior unavailable +1.94M | New | ↗▾ |
| 08 | TXG10X GENOMICS INC-CLASS ACL A COM View history and evidence | $4.62M | 0.68% | 217.83K shares | 1.85% → 0.68%-1.17 pp -519.71K (-70.46%) | Reduced | ↗▾ |
| 09 | GOSSGOSSAMER BIO INC View history and evidence | $2.65M | 0.39% | 8.06M shares | 3.83% → 0.39%-3.44 pp 0 (0.00%) | Unchanged | ↗▾ |
| 10 | QTTBQ32 BIO INC View history and evidence | $2.06M | 0.30% | 320.48K shares | 0.16% → 0.30%+0.14 pp 0 (0.00%) | Unchanged | ↗▾ |
Options overlay 0
No options reported this quarter.
Exited positions 0
No exits reported this quarter.
Every number has a source.
CIK 1274403 · Period 2026-03-31
Data loaded 2026-09-23 · First reported 2026-05-15
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 677093705
}Take these holdings further.
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