Heartflow, Inc. Common Stock

HTFL • NASDAQ

Heartflow, Inc. Common Stock is a publicly traded company on NASDAQ, with a market cap of $2.5B. As of Q3 2025, 53% of shares are held by 87 institutional investors, with Bain Capital Life Sciences Investors, LLC as the largest holder at 14.93%.

Market Cap$2.5B

Overview

Overview of institutional ownership in HTFL as of Q3 2025 with a market cap of $2.8B

All Institutions

Institutions: 87
Value Held: $1.5B
Shares Held: 44.3M
Avg Position: $17.1M
Median Position: $2.5M

Hedge Funds

Hedge Funds: 21
Value Held: $104.8M
Shares Held: 3.1M
Avg Position: $5.0M
Median Position: $2.5M

Ownership Breakdown

Institutional (non-HF)

49.34%

$1.4B

Hedge Funds

3.73%

$104.8M

Retail & Other

46.92%

$1.3B

Based on market cap of $2.8B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in HTFL as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
B Bain Capital Life Sciences Investors, LLC Institution	-	$419.0M 27.84% of portfolio	14.93% 12.4M shares	Q3 2025 Held for 2 months	$1.5B
WELLINGTON MANAGEMENT CO LLP Long Only Manager	Edmund Wellington Iii President	$164.3M 0.03% of portfolio	5.85% 4.9M shares	Q3 2025 Held for 2 months	$571.21B
FMR LLC Institution	-	$159.2M 0.01% of portfolio	5.67% 4.7M shares	Q3 2025 Held for 2 months	$1.92T
B BAILLIE GIFFORD & CO Institution	-	$101.2M 0.08% of portfolio	3.60% 3.0M shares	Q3 2025 Held for 2 months	$134.80B
S Schusterman Interests, LLC Institution	-	$65.3M 14.92% of portfolio	2.33% 1.9M shares	Q3 2025 Held for 2 months	$437.6M
VANGUARD GROUP INC Institution	Salim Ramji CEO	$48.9M 0.00% of portfolio	1.74% 1.5M shares	Q3 2025 Held for 2 months	$6.69T
C Capital International Investors Institution	-	$43.7M 0.01% of portfolio	1.56% 1.3M shares	Q3 2025 Held for 2 months	$615.90B
BAMCO INC /NY/ Long Only Manager	Ronald Stephen Baron CEO	$41.7M 0.11% of portfolio	1.48% 1.2M shares	Q3 2025 Held for 2 months	$37.7B
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	Robert W Sharps President	$40.9M 0.00% of portfolio	1.46% 1.2M shares	Q3 2025 Held for 2 months	$912.31B
LORD, ABBETT & CO. LLC Long Only Manager	Douglas Bloom Sieg Managing Partner	$38.1M 0.12% of portfolio	1.36% 1.1M shares	Q3 2025 Held for 2 months	$31.1B

Net Capital Flow

Institutional buying and selling activity for HTFL in Q3 2025

Net Flow: −-
Buyers: 0
Sellers: 0
Total Bought: +-
Total Sold: −-
Avg Position: -

Biggest Buyers

Institution	Net Bought	Current Position
No buyers found

Biggest Sellers

Institution	Net Sold	Current Position
No sellers found

Entry and Exit Activity

Institutions that initiated new positions or completely exited HTFL in Q3 2025

New Positions: 87
New Value: $1.5B
Exited Positions: 0
Exited Value: -

New Positions

Institution	Position Value
B Bain Capital Life Sciences Investors, LLC Institution	$419.0M 12.4M shares
WELLINGTON MANAGEMENT CO LLP Long Only Manager	$164.3M 4.9M shares
FMR LLC Institution	$159.2M 4.7M shares
B BAILLIE GIFFORD & CO Institution	$101.2M 3.0M shares
S Schusterman Interests, LLC Institution	$65.3M 1.9M shares
VANGUARD GROUP INC Institution	$48.9M 1.5M shares
C Capital International Investors Institution	$43.7M 1.3M shares
BAMCO INC /NY/ Long Only Manager	$41.7M 1.2M shares
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	$40.9M 1.2M shares
LORD, ABBETT & CO. LLC Long Only Manager	$38.1M 1.1M shares

Exited Positions

Institution	Previous Position
No exited positions found

Options Activity

Institutions with the largest Call and Put options positions in HTFL as of Q3 2025

Call Positions: 0
Call Value: -
Put Positions: 0
Put Value: -

Call Positions

Institution	Position Value
No call positions found

Put Positions

Institution	Position Value
No put positions found

Most Committed Institutions

Institutions with HTFL as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
B Bain Capital Life Sciences Investors, LLC Institution	-	27.84% $419.0M	14.93% 12.4M shares	Q3 2025 Held for 2 months	$1.5B
S Schusterman Interests, LLC Institution	-	14.92% $65.3M	2.33% 1.9M shares	Q3 2025 Held for 2 months	$437.6M
Board of Trustees of The Leland Stanford Junior University Family Office	Anthony Stanley Waskiewicz Managing Partner	1.24% $10.5M	0.37% 312.2K shares	Q3 2025 Held for 2 months	$850.7M
XXEC, Inc. RIA/Wealth	Fredric Eliot Russell CEO	0.92% $1.0M	0.04% 29.8K shares	Q3 2025 Held for 2 months	$109.6M
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC Hedge Fund•Long/Short	Peter Y Chung CEO	0.91% $28.6M	1.02% 848.5K shares	Q3 2025 Held for 2 months	$3.2B
Sandia Investment Management LP Hedge Fund•Event Driven	Timothy Joel Sichler Founder	0.86% $252.5K	0.01% 7.5K shares	Q3 2025 Held for 2 months	$29.5M
BRANDYWINE MANAGERS, LLC Fund of Funds	John Anthony Ciccarone President	0.54% $564.6K	0.02% 16.8K shares	Q3 2025 Held for 2 months	$104.2M
Rock Springs Capital Management LP Hedge Fund•Sector	Nnamdi C Etoh CFO	0.49% $8.4M	0.30% 250.0K shares	Q3 2025 Held for 2 months	$1.7B
AH Lisanti Capital Growth, LLC Long Only Manager	Mary Lisanti President	0.24% $981.7K	0.03% 29.2K shares	Q3 2025 Held for 2 months	$410.1M
EMERALD ADVISERS INC/PA Long Only Manager	Kenneth George Mertz CEO	0.24% $7.3M	0.26% 217.9K shares	Q3 2025 Held for 2 months	$3.1B

Hedge Fund Spotlight

Discover hedge funds investing in HTFL

DEERFIELD MANAGEMENT CO /NY

Hedge Fund • Long/Short

Portfolio ManagerJames Edward Flynn

Portfolio Value: $6.0B
Positions: 142
Last Reported: Q3 2025

Sector Allocation

Position in Heartflow, Inc. Common Stock

Market Value: $3.4M
Shares Held: 100.0K
Portfolio Weight: 0.06%
Owned Since: 2025-Q3

Top Holding	Sector	Market Value	Weight
1 Nuvalent, Inc. NUVL	Biotechnology Healthcare	$1.6B	25.79%
2 Centene CNC	Medical - Healthcare Plans Healthcare	$322.8M	5.35%
3 Merus N.V. MRUS	Biotechnology Healthcare	$286.9M	4.75%