Company · Ownership research

ALPHA PRO TECH LTD APT

CIK 0000884269 · CUSIP 020772109

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 020772109 (APT), not CUSIP 020772909 (APT), CUSIP 020772959 (APT), CUSIP 09258M101 (APT), and does not merge CUSIPs.

This page lists the top 20 of 41 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	NEEDHAM INVESTMENT MANAGEMENT LLC CIK 1167212 · View history	$3.61M 642,500 shares	0.11%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2026	▾
02	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$3.16M 561,572 shares	0.00%	+17.50K(+3.20%)Added	SEC filing ↗ Aug 13, 2026	▾
03	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · View history	$2.88M 512,476 shares	0.00%	-41.20K(-7.40%)Reduced	SEC filing ↗ Aug 13, 2026	▾
04	BlackRock, Inc. CIK 2012383 · View history	$1.57M 278,687 shares	0.00%	+6.89K(+2.50%)Added	SEC filing ↗ Aug 7, 2026	▾
05	SUSQUEHANNA INTERNATIONAL GROUP, LLP CIK 1446194 · View history	$1.36M 242,699 shares	0.00%	+101.47K(+71.90%)Added	SEC filing ↗ Aug 14, 2026	▾
06	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$770.52K 137,103 shares	0.00%	-232(-0.20%)Reduced	SEC filing ↗ Aug 11, 2026	▾
07	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$712.00K 126,866 shares	0.00%	-6.49K(-4.90%)Reduced	SEC filing ↗ Aug 13, 2026	▾
08	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$545.00K 96,853 shares	0.00%	+28.47K(+41.60%)Added	SEC filing ↗ Aug 12, 2026	▾
09	BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history	$362.63K 64,525 shares	0.01%	-14.00K(-17.80%)Reduced	SEC filing ↗ Aug 14, 2026	▾
10	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history	$327.70K 58,309 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 13, 2026	▾
11	MARSHALL WACE, LLP CIK 1318757 · View history	$292.87K 52,113 shares	0.00%	+52.11KNew	SEC filing ↗ Aug 13, 2026	▾
12	VANGUARD FIDUCIARY TRUST CO CIK 933478 · View history	$291.05K 51,788 shares	0.00%	+356(+0.70%)Added	SEC filing ↗ Aug 13, 2026	▾
13	STATE STREET CORP CIK 93751 · Amended · View history	$263.90K 46,957 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Sep 22, 2026	▾
14	ESSEX INVESTMENT MANAGEMENT CO LLC CIK 201772 · View history	$192.56K 34,264 shares	0.03%	-111(-0.30%)Reduced	SEC filing ↗ Aug 6, 2026	▾
15	NORTHERN TRUST CORP CIK 73124 · View history	$116.32K 20,697 shares	0.00%	+2.62K(+14.50%)Added	SEC filing ↗ Aug 13, 2026	▾
16	XTX Topco Ltd CIK 1828301 · View history	$96.76K 17,217 shares	0.00%	+2.50K(+17.00%)Added	SEC filing ↗ Aug 14, 2026	▾
17	SIMPLEX TRADING, LLC CIK 1488542 · View history	$94.26K 16,772 shares	0.00%	+16.77KNew	SEC filing ↗ Aug 12, 2026	▾
18	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$90.00K 16,000 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2026	▾
19	JANE STREET GROUP, LLC CIK 1595888 · View history	$73.32K 13,047 shares	0.00%	-12.58K(-49.10%)Reduced	SEC filing ↗ Aug 14, 2026	▾
20	Pinnacle Financial Partners, Inc. CIK 2082866 · View history	$69.69K 12,400 shares	0.00%	-12.60K(-50.40%)Reduced	SEC filing ↗ Aug 14, 2026	▾

Showing 20 / 41 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

3,051,032

Not deduplicated across managers

Disclosed value

$17.15M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

ALPHA PRO TECH LTD · Q2 2026

Explore all 41 reporting institutions.

This page includes 20 of 41 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.