Funds › Atlas Venture Life Science Advisors, LLC
Atlas Venture Life Science Advisors, LLC
13F for Q3 2026, filed Nov 10, 2026. 9 positions worth $631.2M.Managers with more than $100 million in US-listed stocks list their holdings each quarter, within 45 days of quarter end. Long positions only: no short sales or cash.
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Holdings, Q3 2026
Largest first. Common shares only.
| # | The fund's own figures at the end of the quarter. A report can be up to 45 days old when it is filed. Options and bonds are not counted here. | Filing | ||||
|---|---|---|---|---|---|---|
| 1 | KYMR Kymera Therapeutics, Inc. | 2.85M | $318.3M | 50.4% | Unchanged | 13F ↗ |
| 2 | IRON Disc Medicine, Inc. | 1.38M | $90.6M | 14.4% | -8.6% | 13F ↗ |
| 3 | OBX Obsidian Therapeutics, Inc. | 4.50M | $61.8M | 9.8% | New | 13F ↗ |
| 4 | KLRA Kailera Therapeutics, Inc. | 5.17M | $59.1M | 9.4% | Unchanged | 13F ↗ |
| 5 | DYN Dyne Therapeutics, Inc. | 3.44M | $55.4M | 8.8% | -49.4% | 13F ↗ |
| 6 | QTTB Q32 Bio Inc. | 2.72M | $22.5M | 3.6% | Unchanged | 13F ↗ |
| 7 | SION Sionna Therapeutics, Inc. | 3.00M | $15.8M | 2.5% | Unchanged | 13F ↗ |
| 8 | KRRO Korro Bio, Inc. | 773,260 | $7.7M | 1.2% | -19.7% | 13F ↗ |
| 9 | ODTX Odyssey Therapeutics, Inc. | 2,692 | $59.8K | <0.1% | New | 13F ↗ |
Changes since Q2 2026
2 new, 0 added to, 3 trimmed, 0 exited, 4 unchanged. By estimated dollars.
New positions (2)
Added to (0)
None this quarter.
Trimmed (3)
Exited (0)
None this quarter.
The 10 largest of each, by estimated dollars: shares changed times the later report's price. Index tracking, splits and mergers move positions too.
Compare two quarters
Pick any two quarters: what is new, added to, trimmed or exited. Premium plan.
Reported value by quarter
Value and number of positions at the end of each quarter.
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Largest positions in earlier quarters
Pick a quarter to see what the fund's biggest positions were then.
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Ten largest positions
By value, Q3 2026.
Filings
| Filing | ||||||
|---|---|---|---|---|---|---|
| Q3 2026 | Nov 10, 2026 | 13F-HR | 9 | $631.2M | Current | SEC ↗ |
| Q2 2026 | Aug 13, 2026 | 13F-HR | 7 | $881.3M | Current | SEC ↗ |
| Q1 2026 | May 14, 2026 | 13F-HR | 6 | $790.0M | Current | SEC ↗ |
| Q4 2025 | Feb 13, 2026 | 13F-HR | 8 | $865.2M | Current | SEC ↗ |
| Q3 2025 | Nov 13, 2025 | 13F-HR | 9 | $752.6M | Current | SEC ↗ |
| Q2 2025 | Aug 12, 2025 | 13F-HR | 11 | $662.4M | Current | SEC ↗ |
| Q1 2025 | May 14, 2025 | 13F-HR | 13 | $521.8M | Current | SEC ↗ |
Most recent first, up to 80. An amendment can replace a report or add holdings to it. All 13F filings
Information, not investment advice. Values are the fund's own figures at quarter end; a report can be up to 45 days old when filed. Disclaimer