APT · AMEX · Industrial - Specialties

Alpha Pro Tech (APT)

Manufactures building weather barriers and disposable protective products for distributor-led construction, industrial and healthcare markets.

$5.29
vs last close+0.16 (+3.12%)

13F · 13D/G · Form 4

Institutions29.89%3.05M shares
46 holders · as of Jun 30, 2026
Insiders12.59%1.28M shares
1 holder · as of Feb 12, 2025
Strategic holders6.30%642.5K shares
1 holder · as of Feb 13, 2026
Other51.22%5.23M shares
remainder

10.21M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

13F · 13D/G · Form 4

HolderStakeSharesDate
Millar DonnaInsider
12.59%1.28Mfiled Feb 12, 2025
Needham Investment Management L.L.C.Strategic
6.30%642,500filed Feb 13, 2026
Needham Investment Management LLCInstitution
6.30%642,500as of Jun 30, 2026
Renaissance Technologies LLCInstitution
5.50%561,572as of Jun 30, 2026
Vanguard Capital Management LLCInstitution
5.02%512,476as of Jun 30, 2026
BlackRock, Inc.Institution
2.73%278,687as of Jun 30, 2026
Susquehanna International Group, LLPInstitution
2.38%242,699as of Jun 30, 2026
Dimensional Fund Advisors LPInstitution
1.34%137,103as of Jun 30, 2026
Acadian Asset Management LLCInstitution
1.24%126,866as of Jun 30, 2026
Geode Capital Management, LLCInstitution
0.95%96,853as of Jun 30, 2026
Bridgeway Capital Management, LLCInstitution
0.63%64,525as of Jun 30, 2026
Arrowstreet Capital, Limited PartnershipInstitution
0.57%58,309as of Jun 30, 2026
Marshall Wace, LLPInstitution
0.51%52,113as of Jun 30, 2026
Vanguard Fiduciary Trust CoInstitution
0.51%51,788as of Jun 30, 2026
State Street CorpInstitution
0.46%46,957as of Jun 30, 2026
Essex Investment Management Co LLCInstitution
0.34%34,264as of Jun 30, 2026
Northern Trust CorpInstitution
0.20%20,697as of Jun 30, 2026
XTX Topco LtdInstitution
0.17%17,217as of Jun 30, 2026
Simplex Trading, LLCInstitution
0.16%16,772as of Jun 30, 2026
Price T Rowe Associates Inc /MD/Institution
0.16%16,000as of Jun 30, 2026
Jane Street Group, LLCInstitution
0.13%13,047as of Jun 30, 2026
Pinnacle Financial Partners, Inc.Institution
0.12%12,400as of Jun 30, 2026
Newedge Advisors, LLCInstitution
0.11%11,056as of Jun 30, 2026
James Investment Research IncInstitution
0.11%11,050as of Jun 30, 2026
Morgan StanleyInstitution
0.08%8,066as of Jun 30, 2026

13F, as of Jun 30, 2026

46 holders · 3.05M shares · 8 new positions · 16 increased · 14 reduced · 4 closed

HolderShares% outstandingChg q/qFiled
Needham Investment Management LLC642.5K6.30%0Aug 14, 2026
Renaissance Technologies LLC561.6K5.50%+17.5KAug 13, 2026
Vanguard Capital Management LLC512.5K5.02%−41.2KAug 13, 2026
BlackRock, Inc.278.7K2.73%+6.9KAug 7, 2026
Susquehanna International Group, LLP242.7K2.38%+101.5KAug 14, 2026
Dimensional Fund Advisors LP137.1K1.34%−232Aug 11, 2026
Acadian Asset Management LLC126.9K1.24%−6.5KAug 13, 2026
Geode Capital Management, LLC96.9K0.95%+28.5KAug 12, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Millar Donna11.70%1.28M13DFeb 12, 2025
Needham Investment Management L.L.C.6.20%642.5K13GFeb 13, 2026
Vanguard Capital Management5.97%609.1K13GApr 28, 2026

Form 4

Latest trades

Nothing filed in the last 12 months.

House and Senate disclosures

Not reported.