Atlas Venture Life Science Advisors

Latest statistics and disclosures from Atlas Venture Life Science Advisors's latest quarterly 13F-HR filing:

  • Top 5 stock holdings are KYMR, DYN, SION, IRON, DAWN, and represent 97.60% of Atlas Venture Life Science Advisors's stock portfolio.
  • Added to shares of these 1 stock: GBIO.
  • Started 1 new stock position in GBIO.
  • Reduced shares in these 6 stocks: IRON (-$50M), SION (-$26M), KYMR (-$18M), Generation Bio (-$5.1M), IMA, DAWN.
  • Sold out of its positions in Generation Bio, IMA.
  • Atlas Venture Life Science Advisors was a net seller of stock by $-97M.
  • Atlas Venture Life Science Advisors has $865M in assets under management (AUM), dropping by 14.95%.
  • Central Index Key (CIK): 0001917529

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Positions held by Atlas Venture Life Science Advisors consolidated in one spreadsheet with up to 7 years of data

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Portfolio Holdings for Atlas Venture Life Science Advisors

Atlas Venture Life Science Advisors holds 8 positions in its portfolio as reported in the December 2025 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Kymera Therapeutics Common Stock (KYMR) 41.9 $363M -4% 4.7M 77.81
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Dyne Therapeutics Common Stock (DYN) 20.6 $179M 9.1M 19.56
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Sionna Therapeutics Common Stock (SION) 14.2 $123M -17% 3.0M 41.14
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Disc Medicine Common Stock (IRON) 13.9 $120M -29% 1.5M 79.41
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Day One Biopharmaceuticals Common Stock (DAWN) 6.9 $60M 6.4M 9.32
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Korro Bio Common Stock (KRRO) 1.1 $9.1M 1.1M 8.01
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Q32 Bio Common Stock (QTTB) 0.8 $6.9M 2.1M 3.32
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Generation Bio Common Stock (GBIO) 0.5 $4.7M NEW 828k 5.68
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Past Filings by Atlas Venture Life Science Advisors

SEC 13F filings are viewable for Atlas Venture Life Science Advisors going back to 2022