Institutional
Atlas Venture Life Science Advisors, LLC
CIK 0001917529
$790.0M
Reported AUM
6
Positions
Q1 2026
Period
2026-05-14
Filed
The Brief · Atlas Venture Life Science Advisors, LLC · Q1 2026
AI · grounded in 13F
Atlas Venture Life Science Advisors, LLC closed its position in Day One Biopharmaceuticals, Inc. DAWNGBX, reducing its holdings by $59.77M. The fund also exited its position in Generation Bio, Co., resulting in a $4.7M decrease. Additionally, the fund trimmed its stake in Kymera Therapeutics, Inc. KYMR by 1.76%.
Portfolio · Q1 2026
Top holdings
QoQ vs Q4 2025
| # | Stock | Issuer | Price | Day % | 1Y Gr. | 5Y Gr. | Value | % of book | Δ shares (QoQ) | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | KYMR | Kymera Therapeutics, Inc. | $74.13 | -0.64% | 55.67% | 23.18% | $381.3M | 48.26% | −81,866 | −1.8% |
| 2 | DYN | Dyne Therapeutics, Inc. | $17.04 | -7.44% | 15.92% | -5.70% | $165.5M | 20.95% | — | HELD |
| 3 | SION | Sionna Therapeutics, Inc. | $35.37 | -6.38% | 105.40% | 238.15% | $120.1M | 15.20% | — | HELD |
| 4 | IRON | Disc Medicine, Inc. | $67.00 | -5.78% | 33.95% | -45.13% | $96.8M | 12.25% | — | HELD |
| 5 | QTTB | Q32 Bio, Inc. | $13.11 | -6.36% | 590.00% | -88.55% | $13.4M | 1.70% | — | HELD |
| 6 | KRRO | Korro Bio, Inc. | $10.72 | -4.11% | -26.53% | -97.43% | $12.9M | 1.63% | — | HELD |
| 7 | DAWNGBX | Day One Biopharmaceuticals, Inc. | — | — | — | — | — | — | −6,412,560 | EXITED |
| 8 | — | Generation Bio, Co. | — | — | — | — | — | — | −827,946 | EXITED |
Source: SEC EDGAR · accession 0001104659-26-061232. 13F discloses long positions only — shorts, foreign equities, and options are excluded.