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Equibles

HTFL

Heartflow, Inc.

Company with tickers: HTFL

CIK
1464521
CUSIP
42238D107
Shares Outstanding
86,240,828
13F Activity (30d)
113 filings 111 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 169
Total Value: $1,582,667,691
Total Shares: 65,050,054
Showing 1–100 of 172 holdings by value · page 1 of 2

Institutional Ownership Trend

3 quarters

Holder Concentration

Across 169 13F filers · Δ vs Dec 31, 2025
Top Holder
18.4%
Sep 2025 → Mar 2026 · range 18.4% – 28.0%
−5.4 pts
Top 5
52.0%
Sep 2025 → Mar 2026 · range 52.0% – 60.8%
−1.1 pts
Top 10
65.4%
Sep 2025 → Mar 2026 · range 65.4% – 75.1%
−2.8 pts
HHI
779
Sep 2025 → Mar 2026 · range 779 – 1,155
Broadly held −113

Quarterly Activity

vs Dec 31, 2025
New
75
Increased
50
Decreased
26
Sold Out
18
Unchanged
18
Holder count: +57
Institutional value: +3.7%
Shares held: +24.3%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega WELLINGTON MANAGEMENT GROUP LLP +6,088,213 11,982,283
Large BAMCO INC /NY/ +1,523,654 3,827,531
Mega Invesco Ltd. +1,335,693 1,913,090
Mega JANUS HENDERSON GROUP PLC +1,315,416 2,180,976
Mega FMR LLC +1,274,949 5,397,802

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mid Bain Capital Life Sciences Investors, LLC −2,000,000 10,448,158
Large BAILLIE GIFFORD & CO −1,921,346 1,084,652
Small Schusterman Interests, LLC −1,679,535 259,666
Small Capricorn Investment Group LLC −1,404,900 256,701
Mega PRICE T ROWE ASSOCIATES INC /MD/ −831,296 31,975

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 2,045,938 $49,777,671
Mega VANGUARD CAPITAL MANAGEMENT LLC 1,893,495 $46,068,733
Mid NEXT CENTURY GROWTH INVESTORS LLC 652,969 $15,886,735
Small 12 West Capital Management LP 640,000 $15,571,200
Mid Champlain Investment Partners, LLC 567,424 $13,805,425

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 1,580,313 $46,066,121
Small Board of Trustees of The Leland Stanford Junior University 312,234 $9,101,621
Mid SEVEN GRAND MANAGERS, LLC 100,000 $2,915,000
Small West Family Investments, Inc. 87,773 $2,558,582
Mega TD Asset Management Inc 56,562 $1,648,782
Filter: New 75 Increased 50 Reduced 26 Sold out 18 Unchanged 18
Showing 100 of 172
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega WELLINGTON MANAGEMENT GROUP LLP $291,528,944 18.42% 11,982,283
Mid Bain Capital Life Sciences Investors, LLC $254,203,684 16.06% 10,448,158
Mega FMR LLC $131,328,520 8.30% 5,397,802
Large BAMCO INC /NY/ $93,123,829 5.88% 3,827,531
Mega JANUS HENDERSON GROUP PLC $53,063,144 3.35% 2,180,976
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $49,777,671 3.15% 2,045,938
Mega Invesco Ltd. $46,545,477 2.94% 1,913,090
Mega VANGUARD CAPITAL MANAGEMENT LLC $46,068,733 2.91% 1,893,495
Mega BlackRock, Inc. $35,584,664 2.25% 1,462,584
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $34,422,764 2.17% 1,414,828
Mega ALLIANCEBERNSTEIN L.P. $29,787,851 1.88% 1,224,326
Mega MILLENNIUM MANAGEMENT LLC $26,602,835 1.68% 1,093,417
Large BAILLIE GIFFORD & CO $26,389,583 1.67% 1,084,652
Mid SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC $21,704,622 1.37% 892,093
Mega MORGAN STANLEY $20,727,497 1.31% 851,932
Mega FRANKLIN RESOURCES INC $19,311,231 1.22% 793,721
Mid EVENTIDE ASSET MANAGEMENT, LLC $18,416,739 1.16% 756,956
Mega CITADEL ADVISORS LLC $18,408,198 1.16% 756,605
Large VOYA INVESTMENT MANAGEMENT LLC $17,704,136 1.12% 727,667
Large Ensign Peak Advisors, Inc $16,799,037 1.06% 690,466
Mid NEXT CENTURY GROWTH INVESTORS LLC $15,886,735 1.00% 652,969
Small 12 West Capital Management LP $15,571,200 0.98% 640,000
Large FRED ALGER MANAGEMENT, LLC $15,529,984 0.98% 638,306
Mid Rock Springs Capital Management LP $13,928,925 0.88% 572,500
Mid Champlain Investment Partners, LLC $13,805,425 0.87% 567,424
Mega GEODE CAPITAL MANAGEMENT, LLC $13,178,563 0.83% 541,659
Large Point72 Asset Management, L.P. $13,098,079 0.83% 538,351
Large RTW INVESTMENTS, LP $12,043,350 0.76% 495,000
Mega STATE STREET CORP $10,961,881 0.69% 450,550
Large LORD, ABBETT & CO. LLC $10,957,356 0.69% 450,364
Mega JPMORGAN CHASE & CO $10,875,142 0.69% 446,985
Mega UBS Group AG $10,439,613 0.66% 429,084
Small Catalio Capital Management, LP $9,819,296 0.62% 403,588
Large Freestone Grove Partners LP $8,809,747 0.56% 362,094
Mega BNP PARIBAS ARBITRAGE, SA $8,340,542 0.53% 342,809
Mid NZS Capital, LLC $7,058,935 0.45% 290,133
Small XXEC, Inc. $6,780,308 0.43% 278,681
Small Schusterman Interests, LLC $6,317,673 0.40% 259,666
Small Capricorn Investment Group LLC $6,245,535 0.39% 256,701
Large Alyeska Investment Group, L.P. $5,474,250 0.35% 225,000
Mid EMERALD ADVISERS, LLC $5,384,277 0.34% 221,302
Mega GOLDMAN SACHS GROUP INC $5,365,737 0.34% 220,540
Mega AQR CAPITAL MANAGEMENT LLC $5,080,441 0.32% 208,814
Mid GILDER GAGNON HOWE & CO LLC $4,473,459 0.28% 183,866
Large VOLORIDGE INVESTMENT MANAGEMENT, LLC $4,283,174 0.27% 176,045
Mega NORTHERN TRUST CORP Bank $3,852,361 0.24% 158,338
Mega VANGUARD FIDUCIARY TRUST CO Bank $3,660,618 0.23% 150,457
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $3,627,919 0.23% 149,113
Large Balyasny Asset Management L.P. $3,605,706 0.23% 148,200
Mega ROYAL BANK OF CANADA Bank $3,343,452 0.21% 137,421
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $3,260,001 0.21% 133,991
Mid EMERALD MUTUAL FUND ADVISERS TRUST Mutual Fund $3,193,604 0.20% 131,262
Small Lisanti Capital Growth, LLC $3,012,175 0.19% 123,805
Mid Quantbot Technologies LP $2,940,207 0.19% 120,847
Mega BANK OF AMERICA CORP /DE/ Bank $2,717,708 0.17% 111,702
Micro INTREPID FAMILY OFFICE LLC Family Office $2,676,300 0.17% 110,000
Mega JANE STREET GROUP, LLC $2,488,569 0.16% 102,284
Mid Brevan Howard Capital Management LP $1,956,521 0.12% 80,416
Mega AMERIPRISE FINANCIAL INC $1,815,650 0.11% 74,626
Mid Aquatic Capital Management LLC $1,778,498 0.11% 73,099
Large Quantinno Capital Management LP $1,734,023 0.11% 71,271
Large SEI INVESTMENTS CO $1,631,277 0.10% 67,048
Mid Burkehill Global Management, LP $1,581,450 0.10% 65,000
Mega Bank of New York Mellon Corp Bank $1,485,294 0.09% 61,048
Small TFC Financial Management, Inc. $1,352,699 0.09% 55,598
Large Universal- Beteiligungs- und Servicegesellschaft mbH $1,349,074 0.09% 55,449
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $1,304,793 0.08% 53,629
Large Squarepoint Ops LLC $1,231,365 0.08% 50,611
Large Corient Private Wealth LLC $1,224,309 0.08% 50,321
Mid Ghisallo Capital Management LLC $1,216,500 0.08% 50,000
Large Holocene Advisors, LP $1,084,582 0.07% 44,578
Large Jain Global LLC $1,068,135 0.07% 43,902
Small VARCOV Co. $1,039,669 0.07% 42,732
Small Intellectus Partners, LLC $1,001,398 0.06% 41,159
Mega Swiss National Bank Bank $999,963 0.06% 41,100
Mega WELLS FARGO & COMPANY/MN $952,422 0.06% 39,146
Mid XTX Topco Ltd $944,539 0.06% 38,822
Large LAZARD ASSET MANAGEMENT LLC $927,605 0.06% 38,126
Micro AlpInvest Partners B.V. $916,146 0.06% 37,655
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $841,939 0.05% 34,605
Mid Legato Capital Management LLC $841,209 0.05% 34,575
Mega PRICE T ROWE ASSOCIATES INC /MD/ $777,951 0.05% 31,975
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $768,828 0.05% 31,600
Small BCWM, LLC $761,772 0.05% 31,310
Large IEQ CAPITAL, LLC $737,855 0.05% 30,327
Large LMR Partners LLP $729,900 0.05% 30,000
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $714,596 0.05% 29,371
Mid ALLSTATE CORP $705,570 0.04% 29,000
Mega BANK OF MONTREAL /CAN/ Bank $667,590 0.04% 27,439
Small TrueMark Investments, LLC $654,112 0.04% 26,885
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $638,346 0.04% 26,237
Mid HB Wealth Management, LLC $613,456 0.04% 25,214
Mega RHUMBLINE ADVISERS $577,764 0.04% 23,747
Mega Nuveen, LLC $565,404 0.04% 23,239
Large Hudson Bay Capital Management LP $544,262 0.03% 22,370
Mid LANDSCAPE CAPITAL MANAGEMENT, L.L.C. $540,368 0.03% 22,210
Large Carlyle Group Inc. $497,256 0.03% 20,438
Small Quent Capital, LLC $486,600 0.03% 20,000
Large Walleye Capital LLC $473,559 0.03% 19,464
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $467,792 0.03% 19,227

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