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Alpha Pro Tech APT · USD

Industrials · US listing · 🇺🇸 United States

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5.55

+2.40%

Close of 9 Nov 2026, in USD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
Needham Investment Management L.L.C.642.5k6.09%+7.5k31 Dec 2025
The Vanguard Group, Inc.609.1k5.77%−16.3k31 Dec 2025
Renaissance Technologies LLC523k4.96%−12.8k31 Dec 2025
BlackRock Institutional Trust Company, N.A.224.3k2.13%−1.4k31 Dec 2025
Hoffman (Lloyd)195.6k1.85%+12.4k5 Jan 2026
Dimensional Fund Advisors, L.P.137.3k1.30%−10.5k31 Dec 2025
Acadian Asset Management LLC133.4k1.26%−10.9k31 Dec 2025
Geode Capital Management, L.L.C.92.9k0.88%−6.4k31 Dec 2025
Bridgeway Capital Management, LLC78.5k0.74%—31 Dec 2025
Susquehanna International Group, LLP68.3k0.65%+4.1k31 Dec 2025
Arrowstreet Capital, Limited Partnership58.3k0.55%—31 Dec 2025
State Street Investment Management (US)47k0.45%—31 Dec 2025
BlackRock Financial Management, Inc.44.1k0.42%—31 Dec 2025
Essex Investment Management Company, LLC34.4k0.33%—31 Dec 2025
GWM Advisors LLC32.8k0.31%+16k31 Dec 2025

Short interest

Shares sold short, 15 Oct 2026. US exchange data.

82.9k

+85.8% on the period before. 1.0 days to cover.

Short volume

Share of the day's trading sold short, 5 Nov 2026

58.4%

Last 60 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 22 Sept 20261,736 shares
  • 2 Sept 2026164 shares
  • 12 Aug 2026655 shares
  • 11 Aug 2026698 shares

Sources and methodology

Data on this tab
Our data supplier
Chart on the Overview
TradingView

Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.