Stock Outstanding Shares
Making an investment decision in the stock market involves a certain amount of risk, so it's important to thoroughly review a company's stock before making any decisions. Stock float, number of short positions and outstanding shares are among the many factors an investor should take into account.
Market Insider
Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.
Institutional Ownership
About 41.45% of HTFL shares are held by financial institutions. XTX TOPCO LTD is the top corporate investor, holding 43.21K shares valued at $1.26M. A 0.05% stake in Heartflow, Inc. Common Stock is owned by the company. SWISS NATIONAL BANK owns 41.1K shares valued at $1.20M, which translates its holding of 0.05% of the stake in the company.
| Date | Holder | % Stake | Shares Held | Total Value ($) | Shares | % Change in Portfolio |
|---|---|---|---|---|---|---|
| Dec 31, 2025 | XTX TOPCO LTD | 0.05% | 43.21K | 1.26M | 31.91K | +282.62% |
| Dec 31, 2025 | SWISS NATIONAL BANK | 0.05% | 41.1K | 1.2M | 41.1K | +100.00% |
| Dec 31, 2025 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 0.05% | 36.88K | 1.11M | -2.83K | -7.12% |
| Dec 31, 2025 | NORGES BANK | 0.04% | 35K | 1.02M | 35K | +100.00% |
| Dec 31, 2025 | BCWM, LLC | 0.04% | 31.14K | 907.7K | 31.14K | +100.00% |
| Dec 31, 2025 | BARCLAYS PLC | 0.04% | 30.34K | 884.29K | 13.62K | +81.46% |
| Dec 31, 2025 | TRUEMARK INVESTMENTS, LLC | 0.03% | 26.51K | 772.65K | -758 | -2.78% |
| Dec 31, 2025 | NUVEEN, LLC | 0.03% | 23.24K | 677.42K | 23.24K | +100.00% |
| Dec 31, 2025 | WELLS FARGO & COMPANY/MN | 0.03% | 21.49K | 626.38K | 21.49K | +100.00% |
| Dec 31, 2025 | RHUMBLINE ADVISERS | 0.02% | 20.05K | 584.57M | 20.05K | +100.00% |
| Dec 31, 2025 | STIFEL FINANCIAL CORP | 0.01% | 10.58K | 308.29K | 10.58K | +100.00% |
| Dec 31, 2025 | INVESCO LTD. | 0.72% | 577.4K | 16.83M | 475K | +463.90% |
| Dec 31, 2025 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 1.56% | 1.26M | 36.7M | 410.66K | +48.40% |
| Dec 31, 2025 | ENSIGN PEAK ADVISORS, INC | 0.87% | 700.81K | 20.43M | 74.99K | +11.98% |
| Dec 31, 2025 | ALYESKA INVESTMENT GROUP, L.P. | 0.28% | 225K | 6.56M | 140K | +164.71% |
| Dec 31, 2025 | GILDER GAGNON HOWE & CO LLC | 0.23% | 185.87K | 5.42M | 66.51K | +55.72% |
| Dec 31, 2025 | ROYAL BANK OF CANADA | 0.14% | 110.51K | 3.22M | 73.56K | +199.12% |
| Dec 31, 2025 | BAILLIE GIFFORD & CO | 3.73% | 3.01M | 87.62M | 0 | 0 |
| Dec 31, 2025 | VANGUARD GROUP INC | 1.96% | 1.58M | 46.07M | 128.4K | +8.84% |
| Dec 31, 2025 | POLICE & FIREMEN'S RETIREMENT SYSTEM OF NEW JERSEY | 0.01% | 4.49K | 130.88K | 4.49K | +100.00% |
| Dec 31, 2025 | STRS OHIO | 0% | 3.4K | 99.11K | 3.4K | +100.00% |
| Dec 31, 2025 | CITADEL ADVISORS LLC | 1.55% | 1.25M | 36.41M | 871.22K | +230.68% |
| Dec 31, 2025 | UBS GROUP AG | 0.62% | 501.17K | 14.61M | 348.75K | +228.82% |
| Dec 31, 2025 | GEODE CAPITAL MANAGEMENT, LLC | 0.62% | 499.93K | 14.58M | 244.26K | +95.54% |
| Dec 31, 2025 | STATE STREET CORP | 0.4% | 322.35K | 9.4M | 247.87K | +332.80% |
| Dec 31, 2025 | VOYA INVESTMENT MANAGEMENT LLC | 0.28% | 228.62K | 6.66M | 228.62K | +100.00% |
| Dec 31, 2025 | EMERALD ADVISERS, LLC | 0.27% | 221.58K | 6.46M | 3.64K | +1.67% |
| Dec 31, 2025 | NZS CAPITAL, LLC | 0.26% | 209.69K | 6.11M | 209.69K | +100.00% |
| Dec 31, 2025 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.19% | 153.35K | 4.47M | 51.76K | +50.95% |
| Dec 31, 2025 | GOLDMAN SACHS GROUP INC | 0.18% | 147.2K | 4.29M | 90.15K | +158.03% |
| Dec 31, 2025 | EMERALD MUTUAL FUND ADVISERS TRUST | 0.16% | 131.26K | 3.83M | 0 | 0 |
| Dec 31, 2025 | SEVEN GRAND MANAGERS, LLC | 0.12% | 100K | 2.92M | 50K | +100.00% |
| Dec 31, 2025 | WEST FAMILY INVESTMENTS, INC. | 0.11% | 87.77K | 2.56M | 0 | 0 |
| Dec 31, 2025 | BANK OF AMERICA CORP /DE/ | 0.11% | 86.74K | 2.53M | 21.76K | +33.48% |
| Dec 31, 2025 | MILLENNIUM MANAGEMENT LLC | 0.08% | 67.77K | 1.98M | -48.23K | -41.58% |
| Dec 31, 2025 | TD ASSET MANAGEMENT INC | 0.07% | 56.56K | 1.65M | -23.4K | -29.26% |
| Dec 31, 2025 | BANK OF NEW YORK MELLON CORP | 0.06% | 48.65K | 1.42M | 48.65K | +100.00% |
| Dec 31, 2025 | LISANTI CAPITAL GROWTH, LLC | 0.05% | 43.79K | 1.28M | 14.63K | +50.15% |
| Dec 31, 2025 | QUENT CAPITAL, LLC | 0.02% | 20K | 583K | 20K | +100.00% |
| Dec 31, 2025 | LEGAL & GENERAL GROUP PLC | 0.02% | 17.72K | 516.48K | 15.96K | +906.13% |
| Dec 31, 2025 | BRANDYWINE MANAGERS, LLC | 0.02% | 16.77K | 488.96K | 0 | 0 |
| Dec 31, 2025 | LEGATO CAPITAL MANAGEMENT LLC | 0.02% | 16.18K | 471.65K | 8.97K | +124.26% |
| Dec 31, 2025 | PERPETUAL LTD | 0.02% | 15.74K | 458.85K | 15.74K | +100.00% |
| Dec 31, 2025 | SEI INVESTMENTS CO | 0.02% | 15.15K | 441.71K | 6.15K | +68.22% |
| Dec 31, 2025 | DEUTSCHE BANK AG\ | 0.02% | 13.84K | 403.55K | 13.84K | +100.00% |
| Dec 31, 2025 | METLIFE INVESTMENT MANAGEMENT, LLC | 0.01% | 11.04K | 321.67K | 11.04K | +100.00% |
| Dec 31, 2025 | SG AMERICAS SECURITIES, LLC | 0.01% | 10.72K | 312K | 10.72K | +100.00% |
| Dec 31, 2025 | THRIVENT FINANCIAL FOR LUTHERANS | 0.01% | 8.61K | 251K | 8.61K | +100.00% |
| Dec 31, 2025 | BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC | 15.44% | 12.45M | 362.86M | 0 | 0 |
| Dec 31, 2025 | WELLINGTON MANAGEMENT GROUP LLP | 7.31% | 5.89M | 171.81M | 1.01M | +20.78% |
| Dec 31, 2025 | LORD, ABBETT & CO. LLC | 0.98% | 790.9K | 23.06M | -341.84K | -30.18% |
| Dec 31, 2025 | FRANKLIN RESOURCES INC | 0.85% | 685.16K | 19.97M | 363.43K | +112.96% |
| Dec 31, 2025 | JPMORGAN CHASE & CO | 0.73% | 586.28K | 17.09M | 173.72K | +42.11% |
| Dec 31, 2025 | EVENTIDE ASSET MANAGEMENT, LLC | 0.63% | 505.99K | 14.75M | 422K | +502.44% |
| Dec 31, 2025 | RTW INVESTMENTS, LP | 0.61% | 495K | 14.43M | 0 | 0 |
| Dec 31, 2025 | FRED ALGER MANAGEMENT, LLC | 0.55% | 440.51K | 12.84M | 143.51K | +48.32% |
| Dec 31, 2025 | BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY | 0.39% | 312.23K | 9.1M | 0 | 0 |
| Dec 31, 2025 | ROCK SPRINGS CAPITAL MANAGEMENT LP | 0.34% | 277.7K | 8.09M | 27.7K | +11.08% |
| Dec 31, 2025 | AMERIPRISE FINANCIAL INC | 0.13% | 101.54K | 2.96M | 4.72K | +4.87% |
| Dec 31, 2025 | GHISALLO CAPITAL MANAGEMENT LLC | 0.09% | 75K | 2.19M | 0 | 0 |
| Dec 31, 2025 | BNP PARIBAS ARBITRAGE, SNC | 0.01% | 8.6K | 250.69K | 8.6K | +100.00% |
| Dec 31, 2025 | CONNABLE OFFICE INC | 0.01% | 7.55K | 220.14K | 7.55K | +100.00% |
| Dec 31, 2025 | STALEY CAPITAL ADVISERS INC | 0.01% | 7K | 204.05K | 7K | +100.00% |
| Dec 31, 2025 | KLP KAPITALFORVALTNING AS | 0.01% | 4.5K | 131.18K | 4.5K | +100.00% |
| Dec 31, 2025 | FMR LLC | 5.11% | 4.12M | 120.18M | -607.38K | -12.84% |
| Dec 31, 2025 | BAMCO INC /NY/ | 2.86% | 2.3M | 67.16M | 1.07M | +86.17% |
| Dec 31, 2025 | SCHUSTERMAN INTERESTS, LLC | 2.41% | 1.94M | 56.53M | 0 | 0 |
| Dec 31, 2025 | CAPRICORN INVESTMENT GROUP LLC | 2.06% | 1.66M | 48.18M | 1.66M | +100.00% |
| Dec 31, 2025 | UBS ASSET MANAGEMENT AMERICAS INC | 1.78% | 1.43M | 41.71M | 1.43M | +100.00% |
| Dec 31, 2025 | BLACKROCK, INC. | 1.66% | 1.34M | 39.12M | 1.03M | +333.55% |
| Dec 31, 2025 | JANUS HENDERSON GROUP PLC | 1.07% | 865.56K | 25.23M | -149.56K | -14.73% |
| Dec 31, 2025 | ALLIANCEBERNSTEIN L.P. | 1.35% | 1.09M | 31.75M | -34.03K | -3.03% |
| Dec 31, 2025 | PRICE T ROWE ASSOCIATES INC /MD/ | 1.07% | 863.27K | 25.17M | -351.73K | -28.95% |
| Dec 31, 2025 | MORGAN STANLEY | 0.93% | 745.92K | 21.74M | -9.22K | -1.22% |
| Dec 31, 2025 | POINT72 ASSET MANAGEMENT, L.P. | 0.38% | 304.49K | 8.88M | 104.01K | +51.88% |
| Dec 31, 2025 | FREESTONE GROVE PARTNERS LP | 0.19% | 150K | 4.37M | 120K | +400.00% |
| Dec 31, 2025 | NORTHERN TRUST CORP | 0.17% | 138.76K | 4.04M | 104.84K | +309.04% |
| Dec 31, 2025 | CATALIO CAPITAL MANAGEMENT, LP | 0.14% | 113.86K | 3.32M | 113.86K | +100.00% |
| Dec 31, 2025 | BURKEHILL GLOBAL MANAGEMENT, LP | 0.08% | 65K | 1.89M | 0 | 0 |
| Dec 31, 2025 | 0.07% | 56.83K | 1.66B | 56.83K | +100.00% | |
| Sep 30, 2025 | WEST FAMILY INVESTMENTS, INC. | 0.11% | 87.77K | 2.95M | 87.77K | +100.00% |
| Sep 30, 2025 | BURKEHILL GLOBAL MANAGEMENT, LP | 0.08% | 65K | 2.19M | 65K | +100.00% |
| Sep 30, 2025 | BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC | 15.44% | 12.45M | 419M | 12.45M | +100.00% |
| Sep 30, 2025 | WELLINGTON MANAGEMENT GROUP LLP | 6.05% | 4.88M | 164.26M | 4.88M | +100.00% |
| Sep 30, 2025 | RTW INVESTMENTS, LP | 0.61% | 495K | 16.66M | 495K | +100.00% |
| Sep 30, 2025 | JPMORGAN CHASE & CO | 0.51% | 412.57K | 13.89M | 412.57K | +100.00% |
| Sep 30, 2025 | DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | 0.12% | 100K | 3.37M | 100K | +100.00% |
| Sep 30, 2025 | AMERIPRISE FINANCIAL INC | 0.12% | 96.82K | 3.26M | 96.82K | +100.00% |
| Sep 30, 2025 | JENNISON ASSOCIATES LLC | 0.12% | 94.12K | 3.17M | 94.12K | +100.00% |
| Sep 30, 2025 | FRED ALGER MANAGEMENT, LLC | 0.37% | 297K | 10M | 297K | +100.00% |
| Sep 30, 2025 | JANUS HENDERSON GROUP PLC | 1.26% | 1.02M | 34.17M | 1.02M | +100.00% |
| Sep 30, 2025 | CITADEL ADVISORS LLC | 0.47% | 377.68K | 12.71M | 377.68K | +100.00% |
| Sep 30, 2025 | EMERALD ADVISERS, LLC | 0.27% | 217.94K | 7.34M | 217.94K | +100.00% |
| Sep 30, 2025 | POINT72 ASSET MANAGEMENT, L.P. | 0.25% | 200.48K | 6.75M | 200.48K | +100.00% |
| Sep 30, 2025 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.13% | 101.59K | 3.42M | 101.59K | +100.00% |
| Sep 30, 2025 | ALYESKA INVESTMENT GROUP, L.P. | 0.11% | 85K | 2.86M | 85K | +100.00% |
| Sep 30, 2025 | EVENTIDE ASSET MANAGEMENT, LLC | 0.1% | 83.99K | 2.83M | 83.99K | +100.00% |
| Sep 30, 2025 | TD ASSET MANAGEMENT INC | 0.1% | 79.96K | 2.69M | 79.96K | +100.00% |
| Sep 30, 2025 | ROYAL BANK OF CANADA | 0.05% | 36.95K | 1.24M | 36.95K | +100.00% |
| Sep 30, 2025 | BANK OF AMERICA CORP /DE/ | 0.08% | 64.98K | 2.19M | 64.98K | +100.00% |
| Sep 30, 2025 | JAIN GLOBAL LLC | 0.04% | 31.2K | 1.05M | 31.2K | +100.00% |
| Sep 30, 2025 | FREESTONE GROVE PARTNERS LP | 0.04% | 30K | 1.01M | 30K | +100.00% |
| Sep 30, 2025 | XXEC, INC. | 0.04% | 29.83K | 1M | 29.83K | +100.00% |
| Sep 30, 2025 | LISANTI CAPITAL GROWTH, LLC | 0.04% | 29.16K | 981.66K | 29.16K | +100.00% |
| Sep 30, 2025 | TRUEMARK INVESTMENTS, LLC | 0.03% | 27.26K | 917.71K | 27.26K | +100.00% |
| Sep 30, 2025 | ZIMMER PARTNERS, LP | 0.02% | 20K | 673.2K | 20K | +100.00% |
| Sep 30, 2025 | BRANDYWINE MANAGERS, LLC | 0.02% | 16.77K | 564.61K | 16.77K | +100.00% |
| Sep 30, 2025 | NORTHERN TRUST CORP | 0.04% | 33.92K | 1.14M | 33.92K | +100.00% |
| Sep 30, 2025 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 0.05% | 39.7K | 1.34M | 39.7K | +100.00% |
| Sep 30, 2025 | MAN GROUP PLC | 0.01% | 11.47K | 386.11K | 11.47K | +100.00% |
| Sep 30, 2025 | XTX TOPCO LTD | 0.01% | 11.29K | 380.09K | 11.29K | +100.00% |
| Sep 30, 2025 | CENTIVA CAPITAL, LP | 0.01% | 10.56K | 355.28K | 10.56K | +100.00% |
| Sep 30, 2025 | POINT72 ASIA (SINGAPORE) PTE. LTD. | 0.01% | 8.4K | 282.76K | 8.4K | +100.00% |
| Sep 30, 2025 | SANDIA INVESTMENT MANAGEMENT LP | 0.01% | 7.5K | 252.45K | 7.5K | +100.00% |
| Sep 30, 2025 | LEGATO CAPITAL MANAGEMENT LLC | 0.01% | 7.22K | 242.86K | 7.22K | +100.00% |
| Sep 30, 2025 | ROCK SPRINGS CAPITAL MANAGEMENT LP | 0.31% | 250K | 8.42M | 250K | +100.00% |
| Sep 30, 2025 | BAMCO INC /NY/ | 1.54% | 1.24M | 41.65M | 1.24M | +100.00% |
| Sep 30, 2025 | PRICE T ROWE ASSOCIATES INC /MD/ | 1.51% | 1.21M | 40.9M | 1.21M | +100.00% |
| Sep 30, 2025 | ALLIANCEBERNSTEIN L.P. | 1.39% | 1.12M | 37.8M | 1.12M | +100.00% |
| Sep 30, 2025 | SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | 1.05% | 848.46K | 28.56M | 848.46K | +100.00% |
| Sep 30, 2025 | BLACKROCK, INC. | 0.38% | 309.57K | 10.42M | 309.57K | +100.00% |
| Sep 30, 2025 | GEODE CAPITAL MANAGEMENT, LLC | 0.32% | 255.67K | 8.61M | 255.67K | +100.00% |
| Sep 30, 2025 | SOROS FUND MANAGEMENT LLC | 0.08% | 65.9K | 2.22M | 65.9K | +100.00% |
| Sep 30, 2025 | GOLDMAN SACHS GROUP INC | 0.07% | 57.05K | 1.92M | 57.05K | +100.00% |
| Sep 30, 2025 | BAILLIE GIFFORD & CO | 3.73% | 3.01M | 101.18M | 3.01M | +100.00% |
| Sep 30, 2025 | SCHUSTERMAN INTERESTS, LLC | 2.41% | 1.94M | 65.27M | 1.94M | +100.00% |
| Sep 30, 2025 | VANGUARD GROUP INC | 1.8% | 1.45M | 48.87M | 1.45M | +100.00% |
| Sep 30, 2025 | SEVEN GRAND MANAGERS, LLC | 0.06% | 50K | 1.68M | 50K | +100.00% |
| Sep 30, 2025 | BRAIDWELL LP | 0.06% | 50K | 1.68M | 50K | +100.00% |
| Sep 30, 2025 | EMERALD MUTUAL FUND ADVISERS TRUST | 0.16% | 131.26K | 4.42M | 131.26K | +100.00% |
| Sep 30, 2025 | GILDER GAGNON HOWE & CO LLC | 0.15% | 119.36K | 4.02M | 119.36K | +100.00% |
| Sep 30, 2025 | NEW YORK STATE COMMON RETIREMENT FUND | 0.15% | 119.29K | 4.02M | 119.29K | +100.00% |
| Sep 30, 2025 | MILLENNIUM MANAGEMENT LLC | 0.14% | 116K | 3.9M | 116K | +100.00% |
| Sep 30, 2025 | GHISALLO CAPITAL MANAGEMENT LLC | 0.09% | 75K | 2.52M | 75K | +100.00% |
| Sep 30, 2025 | SCHONFELD STRATEGIC ADVISORS LLC | 0.09% | 75K | 2.52M | 75K | +100.00% |
| Sep 30, 2025 | MORGAN STANLEY | 0.94% | 755.14K | 25.42M | 755.14K | +100.00% |
| Sep 30, 2025 | ARTISAN PARTNERS LIMITED PARTNERSHIP | 0.62% | 499.62K | 16.82M | 499.62K | +100.00% |
| Sep 30, 2025 | BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY | 0.39% | 312.23K | 10.51M | 312.23K | +100.00% |
| Sep 30, 2025 | PERCEPTIVE ADVISORS LLC | 0.19% | 150K | 5.05M | 150K | +100.00% |
| Sep 30, 2025 | STATE STREET CORP | 0.09% | 74.48K | 2.51M | 74.48K | +100.00% |
Insiders
Among the HTFL insiders holding of 20.87% of the stake in company, BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC, 10 percent owner, holds the largest shares of 10.45M. FARQUHAR JOHN C.M., Chief Executive Officer, is the second largest HTFL insider with ownership of 571.73K shares. ROGERS CAMPBELL, Chief Medical Officer, stands third with possession of 81K shares of that stake.
| Insiders | Designation | Shares Held |
|---|---|---|
| BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC | 10 percent owner | 10.45M |
| FARQUHAR JOHN C.M. | Chief Executive Officer | 571.73K |
| ROGERS CAMPBELL | Chief Medical Officer | 81K |
| LIGHTCAP JEFFREY C | director | 40K |
| CULLIVAN JULIE A | director | 27.29K |
Buying/Selling by Insiders
| Date | Insider | Type | Cost | Shares | Value ($) | Shares Total |
|---|---|---|---|---|---|---|
| Apr 01, 2026 | ROGERS CAMPBELL | SALE | 24.64 | 64.53K | 1.59M | 81K |
| Mar 19, 2026 | ROGERS CAMPBELL | SALE | 25.69 | 64.53K | 1.66M | 78.52K |
| Mar 18, 2026 | FARQUHAR JOHN C.M. | SALE | 25.00 | 9.73K | 243.13K | 571.73K |
| Mar 10, 2026 | FARQUHAR JOHN C.M. | SALE | 22.66 | 12.84K | 290.89K | 581.45K |
| Mar 05, 2026 | CULLIVAN JULIE A | SALE | 25.00 | 9.12K | 228.05K | 27.29K |
| Feb 12, 2026 | ROGERS CAMPBELL | SALE | 24.49 | 65.15K | 1.6M | 76.03K |
| Feb 10, 2026 | FARQUHAR JOHN C.M. | SALE | 27.46 | 22.56K | 619.55K | 591.66K |
| Feb 05, 2026 | CULLIVAN JULIE A | SALE | 27.32 | 8K | 218.56K | 36.41K |
| Feb 04, 2026 | BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC | SALE | 28.05 | 2M | 56.1M | 10.45M |
| Dec 16, 2025 | LIGHTCAP JEFFREY C | PURCHASE | 26.34 | 40K | 1.05M | 40K |

