Institutional Ownership
Alpha Pro Tech Ltd
CUSIP 020772109COMAPTQ1 2026
13D / 13G Filings
20
Schedule 13D/13G on record
Beneficial Filers
8
Distinct reporting persons
Largest Stake
12.6%
Max % of class reported
Institutional Holders
33
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
20 filings · latest Feb 13, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 13, 2026 | Needham Investment Management L.L.C. | 13G/A | 6.2% | 642.5K | SEC |
| 2 | Feb 12, 2025 | Millar Donna | 13D/A | 11.7% | — | SEC |
| 3 | May 30, 2024 | Needham Investment Management LLC | 13G | 5.1% | 600.0K | SEC |
| 4 | Feb 13, 2024 | Vanguard Group Inc | 13G | 5.8% | 673.5K | SEC |
| 5 | Feb 13, 2024 | Renaissance Technologies LLC | 13G | 5.0% | 588.6K | SEC |
| 6 | Feb 8, 2024 | Millar Donna | 13D/A | 11.0% | 1.28M | SEC |
| 7 | Feb 14, 2023 | Susquehanna Securities, LLC | 13G/A | 1.4% | 171.9K | SEC |
| 8 | Feb 10, 2023 | Millar Donna | 13D/A | 10.2% | 1.28M | SEC |
| 9 | Mar 2, 2022 | Millar Donna | 13D/A | 9.7% | 1.28M | SEC |
| 10 | Feb 10, 2022 | Renaissance Technologies LLC | 13G/A | 4.6% | 611.2K | SEC |
10 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Alpha Pro Tech Ltd.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Needham Investment Management LLC | 642.5K | $2.85M |
| 2 | Renaissance Technologies LLC | 544.1K | $2.42M |
| 3 | Blackrock, Inc. | 271.8K | $1.21M |
| 4 | Susquehanna International Group, LLP | 141.2K | $627.0K |
| 5 | Dimensional Fund Advisors LP | 137.3K | $609.8K |
| 6 | Group One Trading LLC | 113.1K | $502.0K |
| 7 | Bridgeway Capital Management, LLC | 78.5K | $348.7K |
| 8 | Geode Capital Management, LLC | 68.4K | $304.1K |
| 9 | Arrowstreet Capital, Limited Partnership | 58.3K | $258.9K |
| 10 | State Street Corp | 47.0K | $208.5K |