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Disclosery

APT ALPHA PRO TECH LTD

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COM (common), issuer CIK 884269

36 managers (36 13F filers) reported a position in APT shares at 2025-03-31, 3,136,549 shares in all. 7 filers opened a position and 2 filers sold out during the quarter.

Managers
36
13F filers
36
New
7
Added
10
Reduced
7
Sold out
2
Shares held by filers
3,136,549

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2025

Filers in the available 13F reports with a share position at 2025-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCin group VANGUARD GROUP INC659,531$3.3M<0.01%013F-HRTimelineGroup
NEEDHAM INVESTMENT MANAGEMENT LLCin group NEEDHAM INVESTMENT MANAGEMENT…612,500$3.06M0.29%013F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC539,559$2.7M<0.01%-25,91613F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.272,944$1.36M<0.01%+4813F-HRTimelineGroup
Linden Thomas Advisory Services, LLC187,610$938K0.12%+27,45713F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC148,573$741K<0.01%-5,71213F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP143,825$719K<0.01%+2,35813F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC97,411$487K<0.01%+72213F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC77,025$385K0.01%+113F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …58,309$292K<0.01%-2,42213F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC54,915$275K<0.01%+25,48613F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP46,957$235K<0.01%-50013F-HRTimelineGroup
ESSEX INVESTMENT MANAGEMENT CO LLC34,782$174K0.04%-1113F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY23,992$120K<0.01%+5,23413F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC23,314$117K<0.01%new13F-HR/ATimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP22,507$113K<0.01%-38313F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…21,049$105K<0.01%new13F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.20,380$102K<0.01%+1,10013F-HRTimelineGroup
O'SHAUGHNESSY ASSET MANAGEMENT, LLC18,799$94K<0.01%-32,76113F-HRTimeline
CALDWELL SUTTER CAPITAL, INC.16,236$81.2K0.04%013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/16,000$80K<0.01%013F-HRTimeline
Campbell & CO Investment Adviser LLC12,242$61.2K<0.01%new13F-HRTimeline
Allworth Financial LP10,000$44.8K<0.01%013F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/5,878$29.4K<0.01%+25413F-HRTimelineGroup
GROUP ONE TRADING LLC4,567$22.8K<0.01%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN4,000$20K<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,194$5.97K<0.01%new13F-HRTimelineGroup
SIMPLEX TRADING, LLC1,188$5K<0.01%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC426$2.13K<0.01%013F-HR/ATimelineGroup
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/275$1.38K<0.01%013F-HRTimelineGroup
SBI Securities Co., Ltd.265$1.32K<0.01%+113F-HRTimeline
CWM, LLCin group CWM, LLC100$1K<0.01%013F-HRTimelineGroup
Kiker Wealth Management, LLC143$715<0.01%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO40$200<0.01%013F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS13$65<0.01%013F-HRTimelineGroup
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.