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Atlas Venture Life Science Advisors, LLC

Atlas Venture Life Science Advisors, LLC is an institution, managing $752.6M across 9 long positions as of Q3 2025 with 86% Healthcare concentration, with only 9 positions, and 37% allocation to KYMR.

Portfolio Value
$752.6M
Positions
9
Top Holding
KYMR at 36.82%
Last Reported
Q3 2025

Top Holdings

Largest long holdings in Atlas Venture Life Science Advisors, LLC's portfolio (100% of total portfolio)

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HoldingSectorPositionWeightTradedOwnership
Biotechnology
Healthcare
$277.1M
36.82%
6.85%
4.9M shares
Biotechnology
Healthcare
$141.6M
18.81%
-$16.0M
Sold
6.16%
2.1M shares
Biotechnology
Healthcare
$115.5M
15.35%
6.42%
9.1M shares
Unknown
Unknown
$106.3M
14.13%
-$2.3M
Sold
8.19%
3.6M shares
Biotechnology
Healthcare
$54.5M
7.24%
12.11%
1.1M shares
Biotechnology
Healthcare
$45.3M
6.02%
6.28%
6.4M shares
Biotechnology
Healthcare
$5.1M
0.67%
-$14.7
Sold
12.29%
827.9K shares
8
Q32 Bio logo
Biotechnology
Healthcare
$4.1M
0.55%
17.15%
2.1M shares
Unknown
Unknown
$3.1M
0.41%
+$3.1M
Bought
3.38%
377.8K shares

Changes

Portfolio activity, position movements, and quarter-over-quarter changes in Atlas Venture Life Science Advisors, LLC's latest filing

See all changes
Market Value
$752.6M
Prior: $662.4M
Q/Q Change
+13.63%
+$90.3M
Net Flows % of MV
-21.13%
Turnover Ratio
8.25%
New Purchases
0 stocks
-
Added To
0 stocks
+-
Sold Out Of
2 stocks
$102.9M
Reduced Holdings
4 stocks
-$56.1M

Increased Positions

PositionShares Δ
No increased positions

Decreased Positions

PositionShares Δ
Sold
Sold
-92.47%
-10.14%
-2.12%

Analytics

Portfolio insights and performance metrics for Atlas Venture Life Science Advisors, LLC

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Sector Allocation

Healthcare: 85.50%Healthcare
Healthcare
85.50%

Market Cap Distribution

Mid Cap ($2B - $10B): 55.63%Mid Cap ($2B - $10B)Small Cap ($300M - $2B): 42.73%Small Cap ($300M - $2B)Micro Cap ($50M - $300M): 0.41%Nano Cap (< $50M): 1.22%
Mid Cap ($2B - $10B)
55.63%
Small Cap ($300M - $2B)
42.73%
Micro Cap ($50M - $300M)
0.41%
Nano Cap (< $50M)
1.22%

Portfolio Concentration

Top 10 Holdings %
100.0%
Top 20 Holdings %
100.0%
Top 50 Holdings %
100.0%
Top 100 Holdings %
100.0%

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