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 35 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	$3.77M 661,455 shares	0.00%	-12.07K(-1.80%)Reduced	SEC filing ↗ Nov 13, 2024	▾
02	NEEDHAM INVESTMENT MANAGEMENT LLC CIK 1167212 · View history	$3.48M 610,000 shares	0.27%	+7.50K(+1.20%)Added	SEC filing ↗ Nov 14, 2024	▾
03	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$3.36M 590,275 shares	0.01%	-42.10K(-6.70%)Reduced	SEC filing ↗ Nov 13, 2024	▾
04	BlackRock, Inc. CIK 2012383 · View history	$1.56M 272,968 shares	0.00%	—	SEC filing ↗ Nov 13, 2024	▾
05	Linden Thomas Advisory Services, LLC CIK 1965702 · View history	$980.59K 172,034 shares	0.13%	+8.39K(+5.10%)Added	SEC filing ↗ Oct 17, 2024	▾
06	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$909.00K 159,825 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Nov 12, 2024	▾
07	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$800.04K 140,358 shares	0.00%	+15.34K(+12.30%)Added	SEC filing ↗ Nov 7, 2024	▾
08	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$555.17K 97,372 shares	0.00%	-1.36K(-1.40%)Reduced	SEC filing ↗ Nov 12, 2024	▾
09	O'SHAUGHNESSY ASSET MANAGEMENT, LLC CIK 1423442 · View history	$484.24K 83,778 shares	0.00%	-803(-0.90%)Reduced	SEC filing ↗ Nov 12, 2024	▾
10	BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history	$439.04K 77,024 shares	0.01%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
11	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history	$363.67K 63,802 shares	0.00%	-4.70K(-6.90%)Reduced	SEC filing ↗ Nov 14, 2024	▾
12	Inspire Advisors, LLC CIK 1810558 · View history	$326.46K 57,273 shares	0.04%	+57.27KNew	SEC filing ↗ Oct 17, 2024	▾
13	STATE STREET CORP CIK 93751 · View history	$248.84K 43,657 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
14	ESSEX INVESTMENT MANAGEMENT CO LLC CIK 201772 · View history	$221.27K 38,820 shares	0.04%	0(0.00%)Unchanged	SEC filing ↗ Oct 10, 2024	▾
15	RITHOLTZ WEALTH MANAGEMENT CIK 1698218 · View history	$194.60K 34,141 shares	0.01%	-2.13K(-5.90%)Reduced	SEC filing ↗ Oct 10, 2024	▾
16	NORTHERN TRUST CORP CIK 73124 · View history	$130.47K 22,890 shares	0.00%	-1.57K(-6.40%)Reduced	SEC filing ↗ Nov 13, 2024	▾
17	MORGAN STANLEY CIK 895421 · Amended · View history	$103.50K 18,158 shares	0.00%	+7.40K(+68.70%)Added	SEC filing ↗ May 14, 2025	▾
18	CALDWELL SUTTER CAPITAL, INC. CIK 702007 · View history	$92.55K 16,236 shares	0.04%	-4.46K(-21.50%)Reduced	SEC filing ↗ Oct 25, 2024	▾
19	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$92.00K 16,000 shares	0.00%	-6.26K(-28.10%)Reduced	SEC filing ↗ Nov 14, 2024	▾
20	OSAIC HOLDINGS, INC. CIK 1677044 · View history	$83.68K 14,680 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Nov 13, 2024	▾

Showing 20 / 35 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

3,236,803

Not deduplicated across managers

Disclosed value

$18.46M

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 · Q3 2024

Explore all 35 reporting institutions.

This page includes 20 of 35 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.