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Atlas Venture Life Science Advisors, LLC
hedge fundUpdated 28 days agoManaged by Atlas Venture Life Science Advisors, Llc • Latest filing Q2 2026
Portfolio value
$881.3M
Q2 2026
Filings
14
Quarterly 13F history
Top-10 concentration
100.0%
Weight of largest holdings
Annualized return
5.9%
Implied from 13F holdings
Portfolio value history
13F-disclosed portfolio value over 14 quarters
Show data table
| Period | Portfolio value |
|---|---|
| Q1 2023 | $738.6M |
| Q2 2023 | $803.6M |
| Q3 2023 | $645.6M |
| Q4 2023 | $839.8M |
| Q1 2024 | $1.1B |
| Q2 2024 | $949.6M |
| Q3 2024 | $1.1B |
| Q4 2024 | $819.7M |
| Q1 2025 | $521.8M |
| Q2 2025 | $662.4M |
| Q3 2025 | $752.6M |
| Q4 2025 | $865.2M |
| Q1 2026 | $790M |
| Q2 2026 | $881.3M |
Top holdings
7 positions as of Q2 2026
| # | Stock | Value | Shares | % Portfolio | Change |
|---|---|---|---|---|---|
| 1 | K KYMR Kymera Therapeutics, Inc. | $326.5M | 2.85M | 37.05% | — |
| 2 | D DYN Dyne Therapeutics, Inc. | $151M | 6.80M | 17.14% | — |
| 3 | S SION Sionna Therapeutics, Inc. | $131.8M | 3.00M | 14.95% | — |
| 4 | K KLRA Kailera Therapeutics, Inc. | $113.9M | 5.17M | 12.93% | — |
| 5 | I IRON Disc Medicine, Inc. | $110.7M | 1.51M | 12.56% | — |
| 6 | Q QTTB Q32 Bio, Inc. | $34.6M | 2.72M | 3.93% | — |
| 7 | K KRRO Korro Bio, Inc. | $12.7M | 962.9K | 1.44% | — |