Heartflow, Inc.: which funds bought and sold
Institutions that bought and sold Heartflow shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 138 institutions that filed 13F reports for both quarters added to or opened positions in Heartflow, and 60 cut or closed them. Together they added a net 9.5M shares, +15.2% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 3.4M shares (−10.9%); index fund managers were net buyers of 8.7M shares (+126.0%). 49 opened a new position and 23 sold out entirely.
Bought, Q2 2026 138 institutions, 49 of them new holders Sold, Q2 2026 60 institutions, 23 of them sold out
Net change, all compared +9.5M shares (+15.2%)
Net change, active managers −3.4M shares (−10.9%), 24 bought, 18 sold
Buyers versus sellers
138 bought 14 60 sold
Active managers and hedge funds 24 bought · 18 sold · −3.4M
Index fund managers 10 bought · 0 sold · +8.7M
Other institutions 104 bought · 42 sold · +4.3M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Blackrock, Inc. Index funds | +3.7M +255.4% | 5.2M | $153M |
| Vanguard Portfolio Management LLC Index funds | +1.5M +75.2% | 3.6M | $105M |
| Nuveen, LLC | +1.3M +5722.8% | 1.4M | $39.7M |
| Point72 Asset Management, L.P. Hedge fund | +1.2M +219.7% | 1.7M | $50.5M |
| State Street Corp Index funds | +1.0M +225.4% | 1.5M | $43.3M |
| BNP Paribas Asset Management Holding S.A. | +931K New position | 931K | $27.3M |
| Vanguard Capital Management LLC Index funds | +860K +45.4% | 2.8M | $80.8M |
| Geode Capital Management, LLC Index funds | +819K +151.2% | 1.4M | $39.9M |
| Summit Partners Public Asset Management, LLC | +803K +90.0% | 1.7M | $49.7M |
| Alliancebernstein L.P. Active manager | +700K +57.2% | 1.9M | $46.8M |
| Bank Of New York Mellon Corp | +590K +966.1% | 651K | $19.1M |
| UBS Group AG | +546K +127.3% | 976K | $28.6M |
| Massachusetts Financial Services Co Active manager | +499K New position | 499K | $14.6M |
| Bank Of America Corp | +455K +407.6% | 567K | $16.6M |
| Goldman Sachs Group Inc | +387K +175.4% | 607K | $17.8M |
| Invesco Ltd. | +386K +20.2% | 2.3M | $67.4M |
| Renaissance Technologies LLC Hedge fund | +383K New position | 383K | $11.2M |
| Northern Trust Corp Index funds | +380K +239.7% | 538K | $15.8M |
| Nzs Capital, LLC Active manager | +366K +126.1% | 656K | $19.2M |
| Xxec, Inc. | +321K +115.0% | 599K | $18.4M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Point72 Asset Management, L.P. Hedge fund | +1.2M +219.7% | 1.7M | $50.5M |
| Alliancebernstein L.P. Active manager | +700K +57.2% | 1.9M | $46.8M |
| Massachusetts Financial Services Co Active manager | +499K New position | 499K | $14.6M |
| Renaissance Technologies LLC Hedge fund | +383K New position | 383K | $11.2M |
| Nzs Capital, LLC Active manager | +366K +126.1% | 656K | $19.2M |
| Walleye Capital LLC Hedge fund | +279K +1433.9% | 299K | $8.8M |
| Price T Rowe Associates Inc Active manager | +206K +645.2% | 238K | $7M |
| Champlain Investment Partners, LLC Active manager | +166K +29.3% | 734K | $21.5M |
| Alyeska Investment Group, L.P. Hedge fund | +125K +55.6% | 350K | $10.3M |
| Neuberger Berman Group LLC Active manager | +106K New position | 106K | $3.1M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Wellington Management Group LLP Active manager | −4.1M −34.4% | 7.9M | $231M |
| Bain Capital Life Sciences Investors, LLC | −2.0M −19.1% | 8.4M | $248M |
| Baillie Gifford & Co Active manager | −1.1M Sold out | 0 | — |
| Ensign Peak Advisors, Inc | −626K −90.6% | 65K | $1.9M |
| BAMCO Inc Active manager | −602K −15.7% | 3.2M | $94.6M |
| FMR LLC Active manager | −577K −10.7% | 4.8M | $141M |
| Freestone Grove Partners LP Hedge fund | −362K Sold out | 0 | — |
| Schusterman Interests, LLC | −260K Sold out | 0 | — |
| Capricorn Investment Group LLC | −257K Sold out | 0 | — |
| Lord, Abbett & Co. LLC | −250K −55.5% | 201K | $5.9M |
| RTW Investments, LP Hedge fund | −200K −40.4% | 295K | $8.7M |
| Millennium Management LLC Hedge fund | −171K −15.6% | 923K | $27.1M |
| Voloridge Investment Management, LLC Hedge fund | −167K −94.8% | 9,209 | $270,192 |
| Eventide Asset Management, LLC | −120K −15.9% | 637K | $18.7M |
| Jane Street Group, LLC | −102K Sold out | 0 | — |
| Balyasny Asset Management L.P. Hedge fund | −101K −68.5% | 47K | $1.4M |
| Fred Alger Management, LLC Active manager | −99K −15.5% | 539K | $15.8M |
| Gilder Gagnon Howe & Co LLC Active manager | −95K −51.8% | 89K | $2.6M |
| Quantbot Technologies LP Hedge fund | −80K −66.0% | 41K | $1.2M |
| Emerald Advisers, LLC | −67K −30.3% | 154K | $4.5M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Wellington Management Group LLP Active manager | −4.1M −34.4% | 7.9M | $231M |
| Baillie Gifford & Co Active manager | −1.1M Sold out | 0 | — |
| BAMCO Inc Active manager | −602K −15.7% | 3.2M | $94.6M |
| FMR LLC Active manager | −577K −10.7% | 4.8M | $141M |
| Freestone Grove Partners LP Hedge fund | −362K Sold out | 0 | — |
| RTW Investments, LP Hedge fund | −200K −40.4% | 295K | $8.7M |
| Millennium Management LLC Hedge fund | −171K −15.6% | 923K | $27.1M |
| Voloridge Investment Management, LLC Hedge fund | −167K −94.8% | 9,209 | $270,192 |
| Balyasny Asset Management L.P. Hedge fund | −101K −68.5% | 47K | $1.4M |
| Fred Alger Management, LLC Active manager | −99K −15.5% | 539K | $15.8M |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| BNP Paribas Asset Management Holding S.A. | 931K | $27.3M |
| Massachusetts Financial Services CoActive manager | 499K | $14.6M |
| Renaissance Technologies LLCHedge fund | 383K | $11.2M |
| Temasek Holdings (Private) Ltd | 158K | $4.6M |
| Neuberger Berman Group LLCActive manager | 106K | $3.1M |
| Blair William & Co | 102K | $3M |
| Brown Capital Management LLC | 82K | $2.4M |
| Nomura Asset Management International Inc. | 77K | $2.3M |
| Prudential Financial Inc | 55K | $1.6M |
| Jump Financial, LLC | 50K | $1.5M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Baillie Gifford & CoActive manager | 1.1M | $26.4M |
| Freestone Grove Partners LPHedge fund | 362K | $8.8M |
| Capricorn Investment Group LLC | 257K | $6.5M |
| Schusterman Interests, LLC | 260K | $6.3M |
| Jane Street Group, LLC | 102K | $2.5M |
| Holocene Advisors, LPHedge fund | 45K | $1.1M |
| Varcov Co. | 43K | $1M |
| LMR Partners LLPHedge fund | 30K | $729,900 |
| Truemark Investments, LLC | 27K | $654,112 |
| Hudson Bay Capital Management LPHedge fund | 22K | $544,262 |
Who holds the shares
- Institutions reporting
- 191
- Ten largest holders
- 56.9% of 13F-reported shares
- Index fund managers
- 20.8% of 13F-reported shares
- Active managers and hedge funds
- 37.2% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 24 | 18 | 10 | 6 | −3.4M | −10.9% |
| Index fund managers | 10 | 0 | 1 | 0 | +8.7M | +126.0% |
| Other institutions | 104 | 42 | 38 | 17 | +4.3M | +17.4% |