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 36 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	VANGUARD GROUP INC CIK 102909 · View history	$3.09M 659,531 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 11, 2025	▾
02	NEEDHAM INVESTMENT MANAGEMENT LLC CIK 1167212 · View history	$2.87M 612,500 shares	0.23%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2025	▾
03	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$2.51M 536,075 shares	0.00%	-3.48K(-0.60%)Reduced	SEC filing ↗ Aug 13, 2025	▾
04	BlackRock, Inc. CIK 2012383 · View history	$1.27M 271,152 shares	0.00%	-1.79K(-0.70%)Reduced	SEC filing ↗ Aug 12, 2025	▾
05	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$693.49K 147,865 shares	0.00%	+4.04K(+2.80%)Added	SEC filing ↗ Aug 12, 2025	▾
06	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$688.00K 147,003 shares	0.00%	-1.57K(-1.10%)Reduced	SEC filing ↗ Aug 7, 2025	▾
07	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$460.34K 98,126 shares	0.00%	+715(+0.70%)Added	SEC filing ↗ Aug 8, 2025	▾
08	SUSQUEHANNA INTERNATIONAL GROUP, LLP CIK 1446194 · View history	$394.96K 84,214 shares	0.00%	+63.16K(+300.10%)Added	SEC filing ↗ Aug 14, 2025	▾
09	BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history	$361.25K 77,025 shares	0.01%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2025	▾
10	Inspire Advisors, LLC CIK 1810558 · View history	$274.15K 58,454 shares	0.03%	+58.45KNew	SEC filing ↗ Aug 11, 2025	▾
11	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history	$273.47K 58,309 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 13, 2025	▾
12	STATE STREET CORP CIK 93751 · View history	$220.23K 46,957 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2025	▾
13	ESSEX INVESTMENT MANAGEMENT CO LLC CIK 201772 · View history	$161.22K 34,375 shares	0.03%	-407(-1.20%)Reduced	SEC filing ↗ Aug 12, 2025	▾
14	NORTHERN TRUST CORP CIK 73124 · View history	$105.56K 22,507 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 13, 2025	▾
15	CALDWELL SUTTER CAPITAL, INC. CIK 702007 · View history	$76.15K 16,236 shares	0.03%	0(0.00%)Unchanged	SEC filing ↗ Jul 11, 2025	▾
16	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$76.00K 16,000 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2025	▾
17	GROUP ONE TRADING LLC CIK 932540 · View history	$75.19K 16,032 shares	0.00%	+11.46K(+251.00%)Added	SEC filing ↗ Aug 14, 2025	▾
18	NewEdge Advisors, LLC CIK 1633516 · View history	$74.19K 15,819 shares	0.00%	+15.82KNew	SEC filing ↗ Aug 14, 2025	▾
19	CITADEL ADVISORS LLC CIK 1423053 · View history	$72.50K 15,458 shares	0.00%	-39.46K(-71.90%)Reduced	SEC filing ↗ Aug 14, 2025	▾
20	MORGAN STANLEY CIK 895421 · View history	$58.25K 12,420 shares	0.00%	-11.57K(-48.20%)Reduced	SEC filing ↗ Aug 14, 2025	▾

Showing 20 / 36 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

2,990,464

Not deduplicated across managers

Disclosed value

$14.02M

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 2025

Explore all 36 reporting institutions.

This page includes 20 of 36 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.