APT Institutional Ownership & Shareholders
ALPHA PRO TECH LTD (APT) is currently held by 41 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $17.15M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Needham Investment Management Llc is currently the largest disclosed institutional shareholder of APT tracked by InsiderSet, reporting ownership valued at approximately $3.61M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $3.75M, representing an estimated gain of +3.91% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 89% of the total disclosed APT value among the investors covered in this analysis. Major shareholders include Needham Investment Management Llc, Renaissance Technologies LLC, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in ALPHA PRO TECH LTD (APT).
This page ranks the largest institutional APT shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
41
Total Reported Value
$17.15M
Largest Holder
Needham Investment Management Llc
Largest Position
$3.61M
Insider Transactions (90d)
14
Latest Filing Quarter
Q2 2026
New Institutional Positions
48
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Needham Investment Management Llc | 0.11% | 642,500 | $3,610,850 | $3,752,200 | +$141,350 | +3.91% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 561,572 | $3,156,035 | $3,279,580 | +$123,545 | +3.91% |
| Vanguard Capital Management Llc | 0.00% | 512,476 | $2,880,115 | $2,992,860 | +$112,745 | +3.91% | |
| Blackrock, Inc. | 0.00% | 278,687 | $1,566,221 | $1,627,532 | +$61,311 | +3.91% | |
| Susquehanna International Group, Llp | 0.00% | 242,699 | $1,363,968 | $1,417,362 | +$53,394 | +3.91% | |
| Dimensional Fund Advisors Lp | 0.00% | 137,103 | $770,519 | $800,682 | +$30,163 | +3.91% | |
| Acadian Asset Management Llc | 0.00% | 126,866 | $712,000 | $740,897 | +$28,897 | +4.06% | |
| Geode Capital Management, Llc | 0.00% | 96,853 | $545,002 | $565,622 | +$20,620 | +3.78% | |
| Bridgeway Capital Management, Llc | 0.01% | 64,525 | $362,631 | $376,826 | +$14,195 | +3.91% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 58,309 | $327,697 | $340,525 | +$12,828 | +3.91% | |
| Marshall Wace, Llp | 0.00% | 52,113 | $292,873 | $304,340 | +$11,467 | +3.92% | |
| Vanguard Fiduciary Trust Co | 0.00% | 51,788 | $291,049 | $302,442 | +$11,393 | +3.91% | |
| State Street Corp | 0.00% | 46,957 | $263,898 | $274,229 | +$10,331 | +3.91% | |
| Essex Investment Management Co Llc | 0.03% | 34,264 | $192,564 | $200,102 | +$7,538 | +3.91% | |
| Northern Trust Corp | 0.00% | 20,697 | $116,317 | $120,870 | +$4,553 | +3.91% | |
| Xtx Topco Ltd | 0.00% | 17,217 | $96,760 | $100,547 | +$3,787 | +3.91% | |
| Simplex Trading, Llc | 0.00% | 16,772 | $94,258 | $97,948 | +$3,690 | +3.92% | |
| Price T Rowe Associates Inc | 0.00% | 16,000 | $90,000 | $93,440 | +$3,440 | +3.82% | |
| Jane Street Group, Llc | 0.00% | 13,047 | $73,324 | $76,194 | +$2,870 | +3.91% | |
| Pinnacle Financial Partners, Inc. | 0.00% | 12,400 | $69,688 | $72,416 | +$2,728 | +3.91% | |
| Newedge Advisors, Llc | 0.00% | 11,056 | $62,135 | $64,567 | +$2,432 | +3.91% | |
| James Investment Research, Inc. | 0.01% | 11,050 | $62,101 | $64,532 | +$2,431 | +3.91% | |
| Morgan Stanley | 0.00% | 8,066 | $45,331 | $47,105 | +$1,774 | +3.91% | |
| Ubs Group Ag | 0.00% | 5,761 | $32,376 | $33,644 | +$1,268 | +3.92% | |
| Vanguard Global Advisers, Llc | 0.00% | 3,961 | $22,261 | $23,132 | +$871 | +3.91% | |
| Osaic Holdings, Inc. | 0.00% | 3,780 | $21,243 | $22,075 | +$832 | +3.92% | |
| Group One Trading Llc | 0.00% | 2,079 | $11,684 | $12,141 | +$457 | +3.91% | |
| Tower Research Capital Llc (Trc) | 0.00% | 684 | $3,844 | $3,995 | +$151 | +3.92% | |
| Barclays Plc | 0.00% | 426 | $2,394 | $2,488 | +$94 | +3.92% | |
| Fmr Llc | 0.00% | 400 | $2,248 | $2,336 | +$88 | +3.91% | |
| Farther Finance Advisors, Llc | 0.00% | 363 | $1,859 | $2,120 | +$261 | +14.04% | |
| Sbi Securities Co., Ltd. | 0.00% | 252 | $1,416 | $1,472 | +$56 | +3.93% | |
| Jpmorgan Chase & Co | 0.00% | 131 | $727 | $765 | +$38 | +5.23% | |
| Cwm, Llc | 0.00% | 100 | $444 | $584 | +$140 | +31.53% | |
| Td Waterhouse Canada Inc. | 0.00% | 40 | $230 | $234 | +$4 | +1.57% | |
| Archer Investment Corp | 0.00% | 39 | $219 | $228 | +$9 | +4.00% | |
| Caitong International Asset Management Co., Ltd | 0.00% | 22 | $124 | $128 | +$4 | +3.61% | |
| Bnp Paribas Financial Markets | 0.00% | 13 | $73 | $76 | +$3 | +4.00% | |
| Signaturefd, Llc | 0.00% | 10 | $56 | $58 | +$2 | +4.29% | |
| Cva Family Office, Llc | 0.00% | 3 | $17 | $18 | +$1 | +3.06% | |
| Wells Fargo & Company/Mn | 0.00% | 1 | $3 | $6 | +$3 | +94.67% |
Frequently asked questions about APT
Who are the largest institutional holders of APT?
The largest institutional holders of APT reported in the latest SEC Form 13F filings include Needham Investment Management Llc, Renaissance Technologies LLC, Vanguard Capital Management Llc, Blackrock, Inc., and Susquehanna International Group, Llp. InsiderSet ranks institutional holders by their latest reported APT position.
What is APT institutional ownership?
This page tracks APT positions reported by institutional investment managers through SEC Form 13F. ALPHA PRO TECH LTD (APT) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own APT?
InsiderSet currently tracks 41 institutional managers reporting APT holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of APT shareholders.
How much APT stock do institutions own?
Institutional investment managers disclosed approximately $17.15M in APT holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was APT institutional ownership last updated?
The latest APT institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional APT holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its APT position after the reporting date.
Are institutions buying or selling APT?
Institutional buying and selling can be analyzed by comparing APT positions across consecutive 13F reporting periods. InsiderSet's APT Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View APT ownership changes.
How has APT institutional ownership changed over time?
InsiderSet tracks APT institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.