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Atlas Venture Life Science Advisors, LLC

Q4 2025 · Filed 2026-02-13
Market Value
$865M
+15.7%
Holdings
9
-2
New Purchases
1
Added To
0
Closed
1
Reduced
4
Top 10 Concentration
100.0%
Turnover
22.2%

Top Buys (by % of Portfolio)

SymbolCur %Prior %Chg %Value
DYN 20.64% 15.45% +5.19% $179M
KYMR 41.91% 37.07% +4.84% $363M
DAWN 6.91% 6.06% +0.84% $60M
GBIO 0.54% 0.00% +0.54% $5M
QTTB 0.80% 0.55% +0.25% $7M
SION 14.24% 14.22% +0.02% $123M

Top Sells (by % of Portfolio)

SymbolCur %Prior %Chg %Value
KRRO 1.05% 7.28% -6.23% $9M
IRON 13.90% 18.94% -5.04% $120M
IMA 0.00% 0.41% -0.41% $0

Sector Allocation Over Time

Market Cap Concentration

TierHoldingsValueWeight
Mid Cap 4 $721M 83.4%
Small Cap 1 $123M 14.2%
Micro Cap 4 $21M 2.4%

Portfolio Analytics

Avg Market Cap
$1.8B
Median Market Cap
$1.9B
Avg P/E
2.5
Median P/E
2.5
Avg Dividend Yield
—%
Avg Beta
0.95
# Stocks
9
# ETFs / Funds
0

Top Holdings (9 total)

# Symbol % Port Shares Value Avg Price Q/Q Value Chg Share Chg Chg % Status
1 KYMR 41.91% 4,659,874 $363M $77.81 $85M -236,588 -4.8%
2 DYN 20.64% 9,130,465 $179M $19.56 $63M
3 SION 14.24% 2,995,602 $123M $41.14 $17M -619,925 -17.1%
4 IRON 13.90% 1,513,875 $120M $79.41 -$21M -628,742 -29.3%
5 DAWN 6.91% 6,412,560 $60M $9.32 $14M -17,697 -0.3%
6 KRRO 1.05% 1,137,149 $9M $8.01 -$45M
7 QTTB 0.80% 2,092,106 $7M $3.32 $3M
8 GBIO 0.54% 827,946 $5M $5.68 +827,946 NEW
9 IMA —% -$3M -377,814 -100.0% SOLD

New Positions

SymbolValue% Port
GBIO $5M 0.54%

Sold Out Positions

SymbolValue% Port
IMA —%
View SEC EDGAR Filings for Atlas Venture Life Science Advisors, LLC →

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For informational purposes only. Not investment advice. Data sourced from SEC filings. Privacy Terms