PROF Profound Medical Corp.
Profound Medical Corp. (PROF) Institutional Ownership
What the institutions did with PROF last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended September 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| GAGNON SECURITIES LLC | 2.1M | 48.2% |
| Gagnon Advisors, LLC | 962.2K | 22.6% |
| Ring Mountain Capital, LLC | 521.1K | 12.2% |
| THOMPSON DAVIS & CO., INC. | 239.1K | 5.6% |
| TD Waterhouse Canada Inc. | 161.6K | 3.8% |
| PERKINS CAPITAL MANAGEMENT INC | 103.3K | 2.4% |
| Crescent Grove Advisors, LLC | 60.0K | 1.4% |
| TRUIST FINANCIAL CORP | 50.0K | 1.2% |
| T3 Companies, LLC | 45.2K | 1.1% |
| Concurrent Investment Advisors, LLC | 21.7K | 0.5% |
| MTM Investment Management, LLC | 15.5K | 0.4% |
| DIMENSIONAL FUND ADVISORS LP | 12.8K | 0.3% |
| Penbrook Management LLC | 11.4K | 0.3% |
| BARCLAYS PLC | 274 | 0.0% |
| Caitong International Asset Management Co., Ltd | 37 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| GAGNON SECURITIES LLC | Increased | 2.0M | 2.1M | +90.5K |
| Crescent Grove Advisors, LLC | New | 0 | 60.0K | +60.0K |
| HB Wealth Management, LLC | Sold Out | 30.0K | 0 | -30.0K |
| TD Waterhouse Canada Inc. | Increased | 138.1K | 161.6K | +23.5K |
| THOMPSON DAVIS & CO., INC. | Increased | 216.5K | 239.1K | +22.6K |
| PERKINS CAPITAL MANAGEMENT INC | Reduced | 114.3K | 103.3K | -11.0K |
| T3 Companies, LLC | Reduced | 55.0K | 45.2K | -9.8K |
| Ring Mountain Capital, LLC | Increased | 511.9K | 521.1K | +9.2K |
| MCF Advisors LLC | Sold Out | 2.0K | 0 | -2.0K |
| IFP Advisors, Inc | Sold Out | 1.2K | 0 | -1.2K |
| Penbrook Management LLC | Reduced | 12.1K | 11.4K | -700 |
| BARCLAYS PLC | New | 0 | 274 | +274 |
| MTM Investment Management, LLC | Reduced | 15.8K | 15.5K | -250 |
| Caitong International Asset Management Co., Ltd | Reduced | 66 | 37 | -29 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.