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Equibles

Atlas Venture Life Science Advisors, LLC

Position in QTTB — Q32 Bio Inc.

CIK 1917529 CAMBRIDGE, MA
Back to QTTB Full portfolio

Position in QTTB

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$34,615,930
+$21,184,610 QoQ
Shares Held
2,717,106
+29.9% QoQ
Ownership
9.13%
of shares outstanding
% of Portfolio
3.93%
of 13F equity value
Holder Rank
#3
of 71 holders
Holding Since
Mar 2024
10 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in QTTB Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

Atlas Venture Life Science Advisors, LLC holds $881,289,155 across 7 Biotechnology names. QTTB ranks #6 (3.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 KYMR
Kymera Therapeutics, Inc.
 2,847,541 $326,527,526
2 DYN
Dyne Therapeutics, Inc.
 6,800,099 $151,030,198
3 SION
Sionna Therapeutics, Inc.
 2,995,602 $131,776,531
4 KLRA
Kailera Therapeutics, Inc.
 5,171,282 $113,923,342
5 IRON
Disc Medicine, Inc.
 1,513,875 $110,724,817
6 QTTB
Q32 Bio Inc.
This page 		2,717,106 $34,615,930
7 KRRO
Korro Bio, Inc.
 962,884 $12,690,811

All Filings in QTTB

Export CSV
10 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $34,615,930 2,717,106
2026-03-31 $13,431,320 2,092,106
2025-12-31 $6,945,791 2,092,106
2025-09-30 $4,142,369 2,092,106
2025-06-30 $3,117,237 2,092,106
2025-03-31 $3,451,974 2,092,106
2024-12-31 $7,196,844 2,092,106
2024-09-30 $93,349,769 2,092,106
2024-06-30 $37,553,302 2,092,106
2024-03-31 $35,649,486 2,092,106