13F Insight
DOSSIER · 13F-HR · Q1 2026

Atlas Venture Life Science Advisors, LLC

Atlas Venture Life Science's asset manager based in Omaha, NE — $790M in tracked AUM across 6 positions as of Q1 2026.

AV
Atlas Venture Life Science·Omaha, NE·Asset Manager
CIK 0001917529 · last filed Mar 31, 2026
Total AUM
$790M
▼ 15.5%
vs prior
Holdings
6
—
positions
Whale Score
75
75
strong
Activity
—
no data
changes this Q
Top sector
Financials
4% weight
concentration
AI Analysis · Q1 2026 · Q1 2026

Based on the SEC 13F filing data provided for Atlas Venture Life Science Advisors, LLC as of September 30, 2025, here is a comprehensive analysis of the portfolio's composition and activity.

1. Portfolio Overview

The filing reveals a period of substantial consolidation and capital reduction for Atlas Venture Life Science Advisors. The total portfolio value plummeted by 74.5%, decreasing from $662.35 million in the previous quarter to $168.98 million. This drastic reduction is no...

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
KYMR
Kymera Therapeutics, Inc.
$381M4.6M48.3%
02
DYN
Dyne Therapeutics, Inc.
$166M9.1M21.0%
03
SION
Sionna Therapeutics, Inc.
$120M3.0M15.2%
04
IRON
Disc Medicine, Inc.
$97M1.5M12.3%
05
QTTB
Q32 Bio, Inc.
$13M2.1M1.7%
06
KRRO
Korro Bio, Inc.
$13M1.1M1.6%

Filing history

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