Heartflow, Inc. (HTFL) Institutional Ownership Changes & 13F Activity
Heartflow, Inc. (HTFL). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Wellington Management Group Llp, Invesco Ltd., Bain Capital Life Sciences Investors, Llc, Point72 Asset Management, L.P., and Summit Partners Public Asset Management, Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | Buy | +19,697 | +102.4% | 38,924 | $1.14M | Q2 2026 | Sep 09, 2026 |
| Allianz Asset Management Gmbh | Buy | +53,061 | — | 53,061 | $1.56M | Q2 2026 | Sep 02, 2026 |
| Citadel Advisors Llc | Buy | +43,278 | +5.7% | 799,883 | $23.47M | Q2 2026 | Sep 02, 2026 |
| Corient Private Wealth Llc | Buy | +2,403 | +4.8% | 52,724 | $1.55M | Q2 2026 | Aug 27, 2026 |
| California State Teachers Retirement System | Buy | +14,610 | +49.7% | 43,981 | $1.29M | Q2 2026 | Aug 24, 2026 |
| Mercer Global Advisors Inc | Buy | +2,047 | +19.0% | 12,825 | $376.29K | Q2 2026 | Aug 19, 2026 |
| Xxec, Inc. | Buy | +320,513 | +115.0% | 599,194 | $18.36M | Q2 2026 | Aug 17, 2026 |
| Wellington Management Group Llp | Sell | -4,118,057 | -34.4% | 7,864,226 | $230.74M | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Buy | +2,298,718 | — | 2,298,718 | $67.44M | Q2 2026 | Aug 14, 2026 |
| Bain Capital Life Sciences Investors, Llc | Sell | -2,000,000 | -19.1% | 8,448,158 | $247.87M | Q2 2026 | Aug 14, 2026 |
| Point72 Asset Management, L.P. | Buy | +1,182,928 | +219.7% | 1,721,279 | $50.50M | Q2 2026 | Aug 14, 2026 |
| Summit Partners Public Asset Management, Llc | Buy | +802,558 | +90.0% | 1,694,651 | $49.72M | Q2 2026 | Aug 14, 2026 |
| Alliancebernstein L.P. | Buy | +699,942 | +57.2% | 1,924,268 | $46.82M | Q2 2026 | Aug 14, 2026 |
| Ensign Peak Advisors, Inc | Sell | -625,864 | -90.6% | 64,602 | $1.90M | Q2 2026 | Aug 14, 2026 |
| Bamco Inc | Sell | -602,398 | -15.7% | 3,225,133 | $94.63M | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Buy | +455,328 | +407.6% | 567,030 | $16.64M | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Buy | +386,847 | +175.4% | 607,387 | $17.82M | Q2 2026 | Aug 14, 2026 |
| Nzs Capital, Llc | Buy | +365,881 | +126.1% | 656,014 | $19.25M | Q2 2026 | Aug 14, 2026 |
| 12 West Capital Management Lp | Buy | +262,500 | +41.0% | 902,500 | $26.48M | Q2 2026 | Aug 14, 2026 |
| Lord, Abbett & Co. Llc | Sell | -249,828 | -55.5% | 200,536 | $5.88M | Q2 2026 | Aug 14, 2026 |
| Price T Rowe Associates Inc | Buy | +206,293 | +645.2% | 238,268 | $6.99M | Q2 2026 | Aug 14, 2026 |
| Rtw Investments, Lp | Sell | -200,000 | -40.4% | 295,000 | $8.66M | Q2 2026 | Aug 14, 2026 |
| Catalio Capital Management, Lp | Buy | +179,467 | +44.5% | 583,055 | $17.11M | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Sell | -170,524 | -15.6% | 922,893 | $27.08M | Q2 2026 | Aug 14, 2026 |
| Voloridge Investment Management, Llc | Sell | -166,836 | -94.8% | 9,209 | $270.19K | Q2 2026 | Aug 14, 2026 |
| Charles Schwab Investment Management Inc | Buy | +148,141 | +99.3% | 297,254 | $8.72M | Q2 2026 | Aug 14, 2026 |
| Alyeska Investment Group, L.P. | Buy | +125,000 | +55.6% | 350,000 | $10.27M | Q2 2026 | Aug 14, 2026 |
| Eventide Asset Management, Llc | Sell | -120,014 | -15.9% | 636,942 | $18.69M | Q2 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Buy | +104,017 | — | 104,017 | $3.05M | Q2 2026 | Aug 14, 2026 |
| Balyasny Asset Management L.P. | Sell | -101,478 | -68.5% | 46,722 | $1.37M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about HTFL activity
Which institutional owners are buying HTFL?
Institutional owners buying HTFL include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in HTFL activity?
"Buy" means an investor increased their reported position in HTFL compared to the prior reporting period. This reflects growing exposure to Heartflow, Inc. (HTFL) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in HTFL increasing?
Institutional interest in HTFL can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.