APT Alpha Pro Tech Ltd
Alpha Pro Tech Ltd (APT) Institutional Ownership
What the institutions did with APT 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.
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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 |
|---|---|---|
| DIMENSIONAL FUND ADVISORS LP | 137.1K | 29.0% |
| ACADIAN ASSET MANAGEMENT LLC | 131.7K | 27.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 95.7K | 20.3% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 47.3K | 10.0% |
| Squarepoint Ops LLC | 29.9K | 6.3% |
| Legato Capital Management LLC | 11.2K | 2.4% |
| JAMES INVESTMENT RESEARCH, INC. | 11.1K | 2.3% |
| SIMPLEX TRADING, LLC | 2.5K | 0.5% |
| LSV ASSET MANAGEMENT | 2.5K | 0.5% |
| Nuveen, LLC | 993 | 0.2% |
| Fortitude Family Office, LLC | 905 | 0.2% |
| BARCLAYS PLC | 442 | 0.1% |
| Farther Finance Advisors, LLC | 363 | 0.1% |
| SBI Securities Co., Ltd. | 252 | 0.1% |
| FMR LLC | 200 | 0.0% |
| TD Waterhouse Canada Inc. | 40 | 0.0% |
| Archer Investment Corp | 39 | 0.0% |
| Caitong International Asset Management Co., Ltd | 22 | 0.0% |
| SIGNATUREFD, LLC | 10 | 0.0% |
| CITIGROUP INC | 1 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Squarepoint Ops LLC | New | 0 | 29.9K | +29.9K |
| SIMPLEX TRADING, LLC | Reduced | 16.8K | 2.5K | -14.3K |
| ESSEX INVESTMENT MANAGEMENT CO LLC | Increased | 34.3K | 47.3K | +13.0K |
| Legato Capital Management LLC | New | 0 | 11.2K | +11.2K |
| UBS Group AG | Sold Out | 5.8K | 0 | -5.8K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 126.9K | 131.7K | +4.9K |
| LSV ASSET MANAGEMENT | New | 0 | 2.5K | +2.5K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 96.9K | 95.7K | -1.2K |
| Nuveen, LLC | New | 0 | 993 | +993 |
| Fortitude Family Office, LLC | New | 0 | 905 | +905 |
| FMR LLC | Reduced | 400 | 200 | -200 |
| Archer Investment Corp | Reduced | 78 | 39 | -39 |
| BARCLAYS PLC | Increased | 426 | 442 | +16 |
| CITIGROUP INC | New | 0 | 1 | +1 |
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.