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Asset Manager ← All Institutions

Atlas Venture Life Science Advisors, LLC

Q2 2026 · Filed 2026-08-13
Market Value
$881M
+11.6%
Holdings
7
-1
New Purchases
1
Added To
1
Closed
0
Reduced
3
Top 10 Concentration
100.0%
Turnover
14.3%

Top Buys (by % of Portfolio)

SymbolCur %Prior %Chg %Value
KLRA 12.93% 0.00% +12.93% $114M
QTTB 3.93% 1.70% +2.23% $35M
IRON 12.56% 12.25% +0.31% $111M

Top Sells (by % of Portfolio)

SymbolCur %Prior %Chg %Value
KYMR 37.05% 48.26% -11.21% $327M
DYN 17.14% 20.95% -3.82% $151M
SION 14.95% 15.20% -0.25% $132M
KRRO 1.44% 1.63% -0.19% $13M

Sector Allocation Over Time

Market Cap Concentration

TierHoldingsValueWeight
Mid Cap 3 $588M 66.8%
Small Cap 1 $114M 12.9%
Micro Cap 3 $179M 20.3%

Portfolio Analytics

Avg Market Cap
$2.3B
Median Market Cap
$1.3B
Avg P/E
2.9
Median P/E
2.9
Avg Dividend Yield
—%
Avg Beta
1.26
# Stocks
7
# ETFs / Funds
0

Top Holdings (7 total)

# Symbol % Port Shares Value Avg Price Q/Q Value Chg Share Chg Chg % Status
1 KYMR 37.05% 2,847,541 $327M $114.67 -$55M -1,730,467 -37.8%
2 DYN 17.14% 6,800,099 $151M $22.21 -$15M -2,330,366 -25.5%
3 SION 14.95% 2,995,602 $132M $43.99 $12M — —
4 KLRA 12.93% 5,171,282 $114M $22.03 — +5,171,282 — NEW
5 IRON 12.56% 1,513,875 $111M $73.14 $14M — —
6 QTTB 3.93% 2,717,106 $35M $12.74 $21M +625,000 +29.9%
7 KRRO 1.44% 962,884 $13M $13.18 -$182K -174,265 -15.3%

New Positions

SymbolValue% Port
KLRA $114M 12.93%
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