WALTHAM, MA
Q32 BIO INC.QTTB— Latest position per institution from SEC 13F filings
15
Institutional holders
11.33M
Total shares held
103.43M
Estimated value
566.71K
Avg. position size
ORBIMED ADVISORS LLC
CIK 1055951
Shares
2.25M
Value
14.46M
Filed
Mar 31, 2026
ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC
CIK 1917529
Shares
2.09M
Value
13.43M
Filed
Mar 31, 2026
OPALEYE MANAGEMENT INC.
CIK 1595855
Shares
1.26M
Value
8.06M
Filed
Mar 31, 2026
CARLYLE GROUP INC.
CIK 1527166
Shares
1.10M
Value
7.08M
Filed
Mar 31, 2026
SIO CAPITAL MANAGEMENT, LLC
CIK 1482416
Shares
697.41K
Value
2.40M
Filed
Dec 31, 2024
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 1165408
Shares
404.41K
Value
18.04M
Filed
Sep 30, 2024
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
342.27K
Value
6.14M
Filed
Jun 30, 2024
VANGUARD GROUP INC
CIK 102909
Shares
321.05K
Value
1.07M
Filed
Dec 31, 2025
ARCH VENTURE MANAGEMENT, LLC
CIK 1274403
Shares
320.48K
Value
2.06M
Filed
Mar 31, 2026
ACORN CAPITAL ADVISORS, LLC
CIK 2054410
Shares
315.05K
Value
2.02M
Filed
Mar 31, 2026
TEMASEK HOLDINGS (PRIVATE) LTD
CIK 1021944
Shares
313.94K
Value
1.08M
Filed
Dec 31, 2024
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
306.40K
Value
1.97M
Filed
Mar 31, 2026
5AM VENTURE MANAGEMENT, LLC
CIK 1799883
Shares
251.99K
Value
4.52M
Filed
Jun 30, 2024
MACKENZIE FINANCIAL CORP
CIK 919859
Shares
246.30K
Value
1.58M
Filed
Mar 31, 2026
SANOFI
CIK 1121404
Shares
244.08K
Value
1.57M
Filed
Mar 31, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
206.91K
Value
1.33M
Filed
Mar 31, 2026
EVENTIDE ASSET MANAGEMENT, LLC
CIK 1442891
Shares
190K
Value
8.48M
Filed
Sep 30, 2024
ACADIAN ASSET MANAGEMENT LLC
CIK 916542
Shares
172.59K
Value
1.11K
Filed
Mar 31, 2026
HARVARD MANAGEMENT CO INC
CIK 1082621
Shares
162.97K
Value
7.27M
Filed
Sep 30, 2024
MONIMUS CAPITAL MANAGEMENT, LP
CIK 1848831
Shares
134.31K
Value
862.27K
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | ORBIMED ADVISORS LLC | 1055951 | 2.25M | 14.46M | Mar 31, 2026 |
| 2 | ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC | 1917529 | 2.09M | 13.43M | Mar 31, 2026 |
| 3 | OPALEYE MANAGEMENT INC. | 1595855 | 1.26M | 8.06M | Mar 31, 2026 |
| 4 | CARLYLE GROUP INC. | 1527166 | 1.10M | 7.08M | Mar 31, 2026 |
| 5 | SIO CAPITAL MANAGEMENT, LLC | 1482416 | 697.41K | 2.40M | Dec 31, 2024 |
| 6 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 1165408 | 404.41K | 18.04M | Sep 30, 2024 |
| 7 | BLACKROCK FINANCE, INC. | 1364742 | 342.27K | 6.14M | Jun 30, 2024 |
| 8 | VANGUARD GROUP INC | 102909 | 321.05K | 1.07M | Dec 31, 2025 |
| 9 | ARCH VENTURE MANAGEMENT, LLC | 1274403 | 320.48K | 2.06M | Mar 31, 2026 |
| 10 | ACORN CAPITAL ADVISORS, LLC | 2054410 | 315.05K | 2.02M | Mar 31, 2026 |
| 11 | TEMASEK HOLDINGS (PRIVATE) LTD | 1021944 | 313.94K | 1.08M | Dec 31, 2024 |
| 12 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 306.40K | 1.97M | Mar 31, 2026 |
| 13 | 5AM VENTURE MANAGEMENT, LLC | 1799883 | 251.99K | 4.52M | Jun 30, 2024 |
| 14 | MACKENZIE FINANCIAL CORP | 919859 | 246.30K | 1.58M | Mar 31, 2026 |
| 15 | SANOFI | 1121404 | 244.08K | 1.57M | Mar 31, 2026 |
| 16 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 206.91K | 1.33M | Mar 31, 2026 |
| 17 | EVENTIDE ASSET MANAGEMENT, LLC | 1442891 | 190K | 8.48M | Sep 30, 2024 |
| 18 | ACADIAN ASSET MANAGEMENT LLC | 916542 | 172.59K | 1.11K | Mar 31, 2026 |
| 19 | HARVARD MANAGEMENT CO INC | 1082621 | 162.97K | 7.27M | Sep 30, 2024 |
| 20 | MONIMUS CAPITAL MANAGEMENT, LP | 1848831 | 134.31K | 862.27K | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.