SAN FRANCISCO, CA
HEARTFLOW, INC.HTFL— Latest position per institution from SEC 13F filings
15
Institutional holders
52.91M
Total shares held
1.31B
Estimated value
2.65M
Avg. position size
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
11.98M
Value
291.53M
Filed
Mar 31, 2026
BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC
CIK 1703031
Shares
10.45M
Value
254.20M
Filed
Mar 31, 2026
FMR LLC
CIK 315066
Shares
5.40M
Value
131.33M
Filed
Mar 31, 2026
BAMCO INC /NY/
CIK 1017918
Shares
3.83M
Value
93.12M
Filed
Mar 31, 2026
JANUS HENDERSON GROUP PLC
CIK 1274173
Shares
2.18M
Value
53.06M
Filed
Mar 31, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
2.05M
Value
49.78M
Filed
Mar 31, 2026
INVESCO LTD.
CIK 914208
Shares
1.91M
Value
46.55M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
1.89M
Value
46.07M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
1.58M
Value
46.07M
Filed
Dec 31, 2025
BLACKROCK, INC.
CIK 2012383
Shares
1.46M
Value
35.58M
Filed
Mar 31, 2026
UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC
CIK 861177
Shares
1.41M
Value
34.42M
Filed
Mar 31, 2026
CAPITAL INTERNATIONAL INVESTORS
CIK 1562230
Shares
1.30M
Value
43.67M
Filed
Sep 30, 2025
ALLIANCEBERNSTEIN L.P.
CIK 1109448
Shares
1.22M
Value
35.69M
Filed
Mar 31, 2026
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
1.09M
Value
26.60M
Filed
Mar 31, 2026
BAILLIE GIFFORD & CO
CIK 1088875
Shares
1.08M
Value
26.39M
Filed
Mar 31, 2026
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC
CIK 1638555
Shares
892.09K
Value
21.70M
Filed
Mar 31, 2026
MORGAN STANLEY
CIK 895421
Shares
851.93K
Value
20.73M
Filed
Mar 31, 2026
FRANKLIN RESOURCES INC
CIK 38777
Shares
793.72K
Value
19.31M
Filed
Mar 31, 2026
CITADEL ADVISORS LLC
CIK 1423053
Shares
768.71K
Value
18.70M
Filed
Mar 31, 2026
EVENTIDE ASSET MANAGEMENT, LLC
CIK 1442891
Shares
756.96K
Value
18.42M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 11.98M | 291.53M | Mar 31, 2026 |
| 2 | BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC | 1703031 | 10.45M | 254.20M | Mar 31, 2026 |
| 3 | FMR LLC | 315066 | 5.40M | 131.33M | Mar 31, 2026 |
| 4 | BAMCO INC /NY/ | 1017918 | 3.83M | 93.12M | Mar 31, 2026 |
| 5 | JANUS HENDERSON GROUP PLC | 1274173 | 2.18M | 53.06M | Mar 31, 2026 |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 2.05M | 49.78M | Mar 31, 2026 |
| 7 | INVESCO LTD. | 914208 | 1.91M | 46.55M | Mar 31, 2026 |
| 8 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 1.89M | 46.07M | Mar 31, 2026 |
| 9 | VANGUARD GROUP INC | 102909 | 1.58M | 46.07M | Dec 31, 2025 |
| 10 | BLACKROCK, INC. | 2012383 | 1.46M | 35.58M | Mar 31, 2026 |
| 11 | UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC | 861177 | 1.41M | 34.42M | Mar 31, 2026 |
| 12 | CAPITAL INTERNATIONAL INVESTORS | 1562230 | 1.30M | 43.67M | Sep 30, 2025 |
| 13 | ALLIANCEBERNSTEIN L.P. | 1109448 | 1.22M | 35.69M | Mar 31, 2026 |
| 14 | MILLENNIUM MANAGEMENT LLC | 1273087 | 1.09M | 26.60M | Mar 31, 2026 |
| 15 | BAILLIE GIFFORD & CO | 1088875 | 1.08M | 26.39M | Mar 31, 2026 |
| 16 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 1638555 | 892.09K | 21.70M | Mar 31, 2026 |
| 17 | MORGAN STANLEY | 895421 | 851.93K | 20.73M | Mar 31, 2026 |
| 18 | FRANKLIN RESOURCES INC | 38777 | 793.72K | 19.31M | Mar 31, 2026 |
| 19 | CITADEL ADVISORS LLC | 1423053 | 768.71K | 18.70M | Mar 31, 2026 |
| 20 | EVENTIDE ASSET MANAGEMENT, LLC | 1442891 | 756.96K | 18.42M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.