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 38 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	$3.70M 673,528 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 13, 2024	▾
02	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$3.48M 632,375 shares	0.01%	+8.32K(+1.30%)Added	SEC filing ↗ Aug 9, 2024	▾
03	NEEDHAM INVESTMENT MANAGEMENT LLC CIK 1167212 · View history	$3.31M 602,500 shares	0.27%	+252.50K(+72.10%)Added	SEC filing ↗ Aug 14, 2024	▾
04	BlackRock Inc. CIK 1364742 · View history	$1.50M 272,043 shares	0.00%	+1.17K(+0.40%)Added	SEC filing ↗ Aug 13, 2024	▾
05	Linden Thomas Advisory Services, LLC CIK 1965702 · View history	$900.04K 163,644 shares	0.14%	+3.51K(+2.20%)Added	SEC filing ↗ Jul 10, 2024	▾
06	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$877.00K 159,825 shares	0.00%	+39.53K(+32.90%)Added	SEC filing ↗ Aug 6, 2024	▾
07	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$687.60K 125,018 shares	0.00%	+33.78K(+37.00%)Added	SEC filing ↗ Aug 9, 2024	▾
08	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$543.19K 98,733 shares	0.00%	+3.04K(+3.20%)Added	SEC filing ↗ Aug 9, 2024	▾
09	O'SHAUGHNESSY ASSET MANAGEMENT, LLC CIK 1423442 · View history	$465.20K 84,581 shares	0.00%	-5.43K(-6.00%)Reduced	SEC filing ↗ Aug 14, 2024	▾
10	BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history	$423.63K 77,024 shares	0.01%	-8.90K(-10.40%)Reduced	SEC filing ↗ Aug 14, 2024	▾
11	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history	$377.00K 68,500 shares	0.00%	-8.16K(-10.60%)Reduced	SEC filing ↗ Aug 14, 2024	▾
12	STATE STREET CORP CIK 93751 · View history	$240.11K 43,657 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2024	▾
13	ESSEX INVESTMENT MANAGEMENT CO LLC CIK 201772 · View history	$213.51K 38,820 shares	0.04%	-73.59K(-65.50%)Reduced	SEC filing ↗ Aug 12, 2024	▾
14	RITHOLTZ WEALTH MANAGEMENT CIK 1698218 · View history	$199.52K 36,276 shares	0.01%	-3.35K(-8.40%)Reduced	SEC filing ↗ Aug 1, 2024	▾
15	CITADEL ADVISORS LLC CIK 1423053 · View history	$146.24K 26,589 shares	0.00%	-33.30K(-55.60%)Reduced	SEC filing ↗ Aug 14, 2024	▾
16	NORTHERN TRUST CORP CIK 73124 · View history	$134.54K 24,462 shares	0.00%	+4.89K(+25.00%)Added	SEC filing ↗ Aug 14, 2024	▾
17	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$123.00K 22,263 shares	0.00%	-637(-2.80%)Reduced	SEC filing ↗ Aug 14, 2024	▾
18	CALDWELL SUTTER CAPITAL, INC. CIK 702007 · View history	$113.81K 20,692 shares	0.06%	-875(-4.10%)Reduced	SEC filing ↗ Jul 23, 2024	▾
19	SUSQUEHANNA INTERNATIONAL GROUP, LLP CIK 1446194 · View history	$91.53K 16,641 shares	0.00%	-86.13K(-83.80%)Reduced	SEC filing ↗ Aug 15, 2024	▾
20	OSAIC HOLDINGS, INC. CIK 1677044 · View history	$80.74K 14,680 shares	0.00%	+6.33K(+75.90%)Added	SEC filing ↗ Aug 13, 2024	▾

Showing 20 / 38 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

3,282,394

Not deduplicated across managers

Disclosed value

$18.06M

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 2024

Explore all 38 reporting institutions.

This page includes 20 of 38 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.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 38 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"020772109","quarter":"2024Q2","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

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.