Heart Test Laboratories, Inc. (HSCS) Ownership
HSCS ownership summary
as of October 17, 2026- Institutions
- 3.2% of shares outstanding
- Insiders
- 15.65% of shares outstanding
- Shares outstanding
- 4.8M
- Float
- 3.1M shares available to trade
- Short interest
- 0.60% 28K shares short
- Days to cover
- 0.19 short interest down 29.9% vs prior month
- Institutions 3.20%
- Insiders 15.65%
- Other investors 81.15%
HSCS top institutional holders
19 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | TFB Advisors LLC | 0.61% | 30K | $89,815 | — | June 30, 2026 |
| 2 | Geode Capital Management, LLC | 0.48% | 23K | $69,608 | −5,889 (−20.4%) | June 30, 2026 |
| 3 | Vanguard Capital Management, LLC | 0.37% | 18K | $54,263 | — | June 30, 2026 |
| 4 | Vanguard Fiduciary Trust Co | 0.36% | 17K | $52,062 | — | June 30, 2026 |
| 5 | Tradition Wealth Management LLC | 0.35% | 17K | $50,793 | — | June 30, 2026 |
| 6 | Citadel Advisors Llc | 0.30% | 14K | $43,754 | +14,488 (0.0%) | June 30, 2026 |
| 7 | Citigroup Inc | 0.12% | 5,859 | $17,694 | +5,859 (0.0%) | June 30, 2026 |
| 8 | UBS Group AG | 0.12% | 5,812 | $17,552 | −664 (−10.3%) | June 30, 2026 |
| 9 | Tower Research Capital LLC | 0.03% | 1,568 | $4,735 | −483 (−23.5%) | June 30, 2026 |
| 10 | BlackRock Inc | 0.02% | 750 | $2,265 | +750 (0.0%) | June 30, 2026 |
| 11 | Federation des caisses Desjardins du Quebec | 0.01% | 700 | $2,114 | — | June 30, 2026 |
| 12 | Advisor Group Holdings, Inc. | 0.01% | 650 | $1,963 | +600 (+1,200.0%) | June 30, 2026 |
| 13 | Allied Private Wealth LLC | <0.01% | 120 | $362 | +120 (0.0%) | June 30, 2026 |
| 14 | Caitong International Asset Management Co., Limited. | <0.01% | 8 | $24 | +8 (0.0%) | June 30, 2026 |
| 15 | Financial Management Professionals Inc | 0.00% | 2 | $6 | +2 (0.0%) | June 30, 2026 |
| 16 | DRW Securities, LLC | 0.00% | — | — | −76,450 (−100.0%) | June 30, 2026 |
| 17 | Wells Fargo & Co | 0.00% | — | — | −25 (−100.0%) | June 30, 2026 |
| 18 | Advisory Services Network, LLC | 0.00% | — | — | −277 (−100.0%) | June 30, 2026 |
| 19 | Bank of America Corp | 0.00% | — | — | −26 (−100.0%) | March 31, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 19, 7 holders added 22K shares and 7 cut 84K.
HSCS top mutual fund and ETF holders
3 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Fidelity Extended Market Index | 0.33% | 16K | $47,973 | −85 (−0.5%) | August 31, 2026 |
| 2 | Fidelity Series Total Market Index | 0.06% | 2,693 | $8,133 | — | August 31, 2026 |
| 3 | Fidelity Total Market Index | 0.05% | 2,249 | $6,792 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
HSCS insider transactions
latest 1| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-07-29 | Mark T Hilz | Sell | $3.54 | 4,416 | $15,633 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
HSCS shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns HSCS
Institutional investors own 3.2% of Heart Test Laboratories's shares and insiders 15.65%. The largest holder is TFB Advisors LLC with 0.61% of the shares (30K), as of June 30, 2026. Among the top 19 institutions, 7 added shares and 7 reduced their stake in the latest filings. Short interest is 0.60% of the float, or 0.19 days of average trading volume. The share count rose 8,300.3% since 2021.
Related: HSCS analyst forecast, HSCS key metrics. See the HSCS stock overview for the latest quote and news.
HSCS ownership FAQ
Who owns the most Heart Test Laboratories stock?
The largest shareholders of Heart Test Laboratories are TFB Advisors LLC (0.61%), Geode Capital Management, LLC (0.48%), Vanguard Capital Management, LLC (0.37%), Vanguard Fiduciary Trust Co (0.36%), Tradition Wealth Management LLC (0.35%).
What percentage of Heart Test Laboratories is owned by institutions?
Institutions hold 3.2% of Heart Test Laboratories's shares outstanding; insiders hold 15.65%.
Which funds own Heart Test Laboratories?
The largest fund holders of Heart Test Laboratories are Fidelity Extended Market Index (0.33%), Fidelity Series Total Market Index (0.06%), Fidelity Total Market Index (0.05%).
What is Heart Test Laboratories's short interest?
28K shares of Heart Test Laboratories were sold short, 0.60% of the float; at the average daily volume it would take 0.19 days to cover.
Are insiders buying or selling Heart Test Laboratories?
Of the latest 1 reported insider transactions in Heart Test Laboratories (since July 29, 2025), 0 were purchases and 1 were sales.
How many shares of Heart Test Laboratories are outstanding?
Heart Test Laboratories has 4.8M shares outstanding, of which 3.1M are in the public float.