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ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC 13F portfolio summary

ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC of ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC has 7 current stock holdings with a reported portfolio value of $881.3M. The portfolio 1 year return is +116.05%. Top holdings include KYMR (37.05%), DYN (17.14%), KLRA (12.93%), IRON (12.56%), KRRO (1.44%).

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ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC

ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC
Latest filing: 2026-06-30

ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC runs ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC and currently holds 7 stock positions, which is fewer than the average of 230 among the investors we track. The portfolio is valued at approximately $881.29M. Their top holdings are KYMR, DYN, KLRA, IRON, KRRO. The top five represent 81.1% of reported portfolio weight. ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC ranks #N/A out of 1000 investors tracked by Alpha Score. In the most recent quarter, ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC initiated 1 new position. They trimmed 3 positions. Their current best-performing preview position is KYMR with returns of +37.68%.

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Top 5 Holdings
KYMR37.1%
DYN17.1%
KLRA12.9%
IRON12.6%
KRRO1.4%
Top 5: 81.1%
Portfolio Returns
1 Year
+116.05%
#0/1000
3 Year
+91.90%
#0/1000
5 Year
+18.63%
#0/1000

Portfolio Value

$881.29M

Alpha Score

61.0

#0 of 1000

Holdings

7

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7 stock holdings

HoldingWeightAvg BuyCurrentReturnQuarter Change
KYMR
Kymera Therapeutics, Inc.
37.05%$63.49$119.80+88.69%
Trimmed
-37.80%
DYN
Dyne Therapeutics, Inc.
17.14%$11.69$26.10+123.27%
Trimmed
-25.52%
KLRA
Kailera Therapeutics, Inc.
12.93%$22.03$17.17-22.06%
New Buy
IRON
Disc Medicine, Inc.
12.56%$22.24$79.81+258.86%
Held
KRRO
Korro Bio, Inc.
1.44%$47.71$13.18-72.37%
Trimmed
-15.32%