OSI SYSTEMS INC filings

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SEC filings by OSI SYSTEMS INC (ownership)
TypeFiledFilerSubjectShares OwnedPercent Owned
SC 13G/A2009-02-17WELLINGTON MANAGEMENT CO LLPOSI SYSTEMS INC1,326,1567.4%EDGAR
SC 13G/A2009-02-09DIMENSIONAL FUND ADVISORS INCOSI SYSTEMS INC962,7215.4%EDGAR
SC 13G/A2009-02-03CHOPRA DEEPAKOSI SYSTEMS INC1,166,1516.5%EDGAR
SC 13G/A2009-01-21WELLS FARGO & CO/MNOSI SYSTEMS INC2,942,68816.5%EDGAR
SC 13G/A2008-02-14WELLINGTON MANAGEMENT CO LLPOSI SYSTEMS INC1,190,0426.9%EDGAR
SC 13G/A2008-02-14CHOPRA DEEPAKOSI SYSTEMS INC1,217,1546.8%EDGAR
SC 13G/A2008-02-06DIMENSIONAL FUND ADVISORS INCOSI SYSTEMS INC1,338,7277.8%EDGAR
SC 13G/A2008-02-05ROYCE & ASSOCIATES LLCOSI SYSTEMS INC666,3953.9%EDGAR
SC 13G/A2008-01-23WELLS FARGO & CO/MNOSI SYSTEMS INC2,738,26016.0%EDGAR
SC 13G/A2007-10-10WELLINGTON MANAGEMENT CO LLPOSI SYSTEMS INC1,233,4427.2%EDGAR
SC 13G/A2007-02-14WELLINGTON MANAGEMENT CO LLPOSI SYSTEMS INC2,040,44212.2%EDGAR
SC 13G/A2007-02-14CHOPRA DEEPAKOSI SYSTEMS INC1,395,4408.3%EDGAR
SC 13G/A2007-02-12NWQ INVESTMENT MANAGEMENT CO LLCOSI SYSTEMS INC918,4645.5%EDGAR
SC 13G/A2007-02-09DIMENSIONAL FUND ADVISORS INCOSI SYSTEMS INC1,416,4448.5%EDGAR
SC 13G/A2007-02-09WELLS FARGO & CO/MNOSI SYSTEMS INC2,218,88013.3%EDGAR
SC 13G/A2007-02-02DIMENSIONAL FUND ADVISORS INCOSI SYSTEMS INC1,416,4448.5%EDGAR
SC 13G/A2007-01-24ROYCE & ASSOCIATES LLCOSI SYSTEMS INC966,7955.8%EDGAR
SC 13G2006-02-15WELLS FARGO & CO/MNOSI SYSTEMS INC2,004,11312.3%EDGAR
SC 13G/A2006-02-14WELLINGTON MANAGEMENT CO LLPOSI SYSTEMS INC2,189,74213.5%EDGAR
SC 13G/A2006-02-14NWQ INVESTMENT MANAGEMENT CO LLCOSI SYSTEMS INC1,696,28910.4%EDGAR
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