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Data I/O DAIO · USD

Information Technology · US listing · 🇺🇸 United States

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2.50

+6.38%

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
Kanen Wealth Management, LLC839.4k9.17%+19.9k30 Jun 2025
Renaissance Technologies LLC476.3k5.21%−3.3k30 Jun 2025
The Vanguard Group, Inc.358.5k3.92%—30 Jun 2025
Penbrook Management, LLC352.8k3.86%+3k30 Sept 2025
Dimensional Fund Advisors, L.P.270.1k2.95%+12.8k30 Jun 2025
Kovack Advisors Inc269.4k2.94%−12.6k30 Jun 2025
Acadian Asset Management LLC133.2k1.46%−13.3k30 Jun 2025
Newton Investment Management North America, LLC116.1k1.27%—30 Jun 2025
Dibona (Charles Joseph)100k1.09%+100k1 Sept 2025
Geode Capital Management, L.L.C.97.6k1.07%−13530 Jun 2025
Essex Investment Management Company, LLC74.6k0.82%+31k30 Jun 2025
Citadel Advisors LLC42.4k0.46%+1.1k30 Jun 2025
Susquehanna International Group, LLP22.7k0.25%+22.7k30 Jun 2025
James Investment Research Inc.22.4k0.24%—30 Sept 2025
GWM Advisors LLC22.4k0.24%+7k30 Jun 2025

Short interest

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

7k

-55.1% on the period before. 1.0 days to cover.

Short volume

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

26.0%

Last 60 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 20 Aug 2026576 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.