# HEARTFLOW INC COM

HEARTFLOW INC COM is a security (CUSIP 42238D107) tracked across SEC portfolio filings. 172 institutional managers reported $1.5B on Form 13F as of 2026-06-30; 22 registered fund positions totaling $248.4M via N-PORT as of 2026-05-31.

## Summary

- Issuer: HEARTFLOW INC
- Class: COM
- CUSIP: 42238D107
- Asset category: EC
- 13F holders: 172
- 13F value: $1.5B
- 13F period: 2026-06-30
- N-PORT fund positions: 22
- N-PORT value: $248.4M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 172 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| WELLINGTON MANAGEMENT GROUP LLP | BOSTON, MA | $291.5M | 11,982,283 |
| Bain Capital Life Sciences Investors, LLC | Boston, MA | $254.2M | 10,448,158 |
| FMR LLC | BOSTON, MA | $131.3M | 5,397,802 |
| [BAMCO INC /NY/](https://search.stillhousedata.com/firm/110789) | NEW YORK, NY | $93.1M | 3,827,531 |
| JANUS HENDERSON GROUP PLC | LONDON, X0 | $53.1M | 2,180,976 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $46.1M | 1,580,313 |
| [ALLIANCEBERNSTEIN L.P.](https://search.stillhousedata.com/firm/108477) | NASHVILLE, TN | $35.7M | 1,224,326 |
| BlackRock, Inc. | New York, NY | $35.6M | 1,462,584 |
| UBS ASSET MANAGEMENT AMERICAS INC | CHICAGO, IL | $34.4M | 1,414,828 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $26.6M | 1,093,417 |
| [SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC](https://search.stillhousedata.com/firm/175100) | Boston, MA | $21.7M | 892,093 |
| MORGAN STANLEY | NEW YORK, NY | $20.7M | 851,932 |
| FRANKLIN RESOURCES INC | San Mateo, CA | $19.3M | 793,721 |
| Bank of New York Mellon Corp | NEW YORK, NY | $19.1M | 650,849 |
| [CITADEL ADVISORS LLC](https://search.stillhousedata.com/firm/148826) | MIAMI, FL | $18.7M | 756,605 |

## Top fund holders (N-PORT)

_Showing 15 of 22 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD HEALTH CARE FUND](https://search.stillhousedata.com/fund/S000002922) | VANGUARD SPECIALIZED FUNDS | $168.5M | 45.72% |
| [Janus Henderson Venture Fund](https://search.stillhousedata.com/fund/S000010488) | JANUS INVESTMENT FUND | $18.4M | 59.90% |
| [BARON OPPORTUNITY FUND](https://search.stillhousedata.com/fund/S000000585) | BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND) | $15.9M | 98.11% |
| [Fidelity Growth Company Fund](https://search.stillhousedata.com/fund/S000007119) | Fidelity Mt. Vernon Street Trust | $15.6M | 1.57% |
| [Fidelity Advisor Health Care Fund](https://search.stillhousedata.com/fund/S000005329) | Fidelity Advisor Series VII | $14.9M | 51.54% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $4.9M | 0.60% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $3.2M | 1.81% |
| [Emerald Growth Fund](https://search.stillhousedata.com/fund/S000036390) | FINANCIAL INVESTORS TRUST | $2.4M | 16.90% |
| [VOYA SMALLCAP OPPORTUNITIES PORTFOLIO](https://search.stillhousedata.com/fund/S000008640) | Voya Variable Products Trust | $1.1M | 63.69% |
| [Fidelity Nasdaq Composite Index ETF](https://search.stillhousedata.com/fund/S000006011) | Fidelity Commonwealth Trust | $884K | 0.81% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $800K | 1.66% |
| [TAX MANAGED SMALL CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000005252) | Tax-Managed Small-Cap Portfolio | $795K | 43.41% |
| [Fidelity Disruptive Medicine ETF](https://search.stillhousedata.com/fund/S000079688) | Fidelity Covington Trust | $774K | 188.97% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $704K | 0.12% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $580K | 0.19% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/42238d107.md)
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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.