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Data I/O Corp (DAIO)Ownership Data

Short Interest History (%)

This is the historical short interest of Data I/O Corp, as measured by the Short Percentage Of Float.

Institutional Ownership History (%)

This the Institutional Ownership History of Data I/O CorpPeter Lynch prefers to buy companies with low institutional ownership.

Insider ownership (%)

This is the historical insider ownership of Data I/O Corp. It is usually better to buy companies with large insider ownership. The company insiders' interest are more aligned with external shareholders in this case.

Top Direct Holders

HolderPositionShares% of Shares
Report Date
Joel S. HatlenCHIEF FINANCIAL OFFICER196,7882.5%2014-09-10
Frederick R. HumeN/A185,8642.36%2012-07-31
Anthony AmbrosePresident138,1211.76%2014-10-25
Dr. Paul A. GaryDirector69,4610.88%2010-10-19
William R. WalkerN/A34,2000.44%2012-05-10
Mr. Douglas W. BrownDirector27,0000.34%2014-05-19
Harald A. WeigeltVice President World Wide Sale24,8890.32%2008-04-23
Steven M. QuistN/A21,8760.28%2012-05-10
Brian T. CrowleyDirector21,4000.27%2014-05-30
Rajeev GulatiN/A20,0000.25%2014-05-19

Top Fund Holders

HolderSharesReport Date% of Shares
% of Total
Assets Managed
Market Value
Penbrook Management LLC535,0502014-09-306.821.621,760,000
Mercury Management, LLC398,6002014-04-045.120.00956,640
Dimensional Fund Advisors, Inc.305,9782014-09-303.900.001,007,000
Renaissance Technologies Corp262,7002014-09-303.350.00864,000
Vanguard Group, Inc.256,4092014-09-303.270.00844,000
Vanguard Extended Market Index Fund180,0662014-12-312.310.00614,025
DFA U.S. Micro Cap Portfolio77,0002014-11-300.980.01283,360
Vanguard Total Stock Mkt Idx76,3432014-12-310.980.00260,330
DFA US Small Cap Value II Portfolio74,2902014-11-300.950.00273,387
Royal Bank Of Canada29,7512014-09-300.380.0098,003

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