ALPHA PRO TECH LTD COM is a security (CUSIP 020772109) tracked across SEC portfolio filings. 38 institutional managers reported $17.7M on Form 13F as of 2026-06-30; 1 registered fund positions totaling $456K via N-PORT as of 2026-03-31.
Showing 15 of 38 managers by value.
| Manager | Location | Value | Shares |
|---|---|---|---|
| CITADEL ADVISORS LLC | MIAMI, FL | $3.5M | — |
| NEEDHAM INVESTMENT MANAGEMENT LLC | NEW YORK, NY | $2.9M | 642,500 |
| VANGUARD GROUP INC | Valley Forge, PA | $2.7M | 609,067 |
| RENAISSANCE TECHNOLOGIES LLC | NEW YORK, NY | $2.4M | 544,072 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $1.9M | 141,226 |
| BlackRock, Inc. | New York, NY | $1.2M | 271,800 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $610K | 137,335 |
| GROUP ONE TRADING, L.P. | CHICAGO, IL | $502K | 113,071 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | HOUSTON, TX | $349K | 78,525 |
| GEODE CAPITAL MANAGEMENT, LLC | BOSTON, MA | $304K | 68,386 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | BOSTON, MA | $259K | 58,309 |
| STATE STREET CORP | BOSTON, MA | $208K | 46,957 |
| JANE STREET GROUP, LLC | NEW YORK, NY | $178K | 25,630 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | BOSTON, MA | $153K | 34,375 |
| SYNOVUS FINANCIAL CORP | Columbus, GA | $120K | 25,000 |
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| VANGUARD EXTENDED MARKET INDEX FUND | VANGUARD INDEX FUNDS | $456K | 0.06% |