ON SEMICONDUCTOR CORP filings

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SEC filings by ON SEMICONDUCTOR CORP (ownership)
TypeFiledFilerSubjectShares OwnedPercent Owned
SC 13G/A2010-01-08THORNBURG INVESTMENT MANAGEMENT INCON SEMICONDUCTOR CORP16,403,5193.9%EDGAR
SC 13D2009-12-21ON SEMICONDUCTOR CORPCALIFORNIA MICRO DEVICES CORP5,047,50019.5%EDGAR
SC 13G/A2009-11-10WELLINGTON MANAGEMENT CO LLPON SEMICONDUCTOR CORP23,364,7835.5%EDGAR
SC 13G/A2009-02-27THORNBURG INVESTMENT MANAGEMENT INCON SEMICONDUCTOR CORP24,577,3896.0%EDGAR
SC 13G/A2009-02-17FMR LLCON SEMICONDUCTOR CORP62,265,00415.0%EDGAR
SC 13G/A2009-02-17WELLINGTON MANAGEMENT CO LLPON SEMICONDUCTOR CORP45,828,41611.1%EDGAR
SC 13G/A2009-02-17BROOKSIDE CAPITAL PARTNERS FUND LPON SEMICONDUCTOR CORP24,325,0105.9%EDGAR
SC 13G/A2009-01-15THORNBURG INVESTMENT MANAGEMENT INCON SEMICONDUCTOR CORP24,577,3896.0%EDGAR
SC 13G2008-11-28BROOKSIDE CAPITAL PARTNERS FUND LPON SEMICONDUCTOR CORP--EDGAR
SC 13G/A2008-06-10WELLINGTON MANAGEMENT CO LLPON SEMICONDUCTOR CORP40,405,73510.2%EDGAR
SC 13G/A2008-02-29THORNBURG INVESTMENT MANAGEMENT INCON SEMICONDUCTOR CORP26,585,0669.1%EDGAR
SC 13G/A2008-02-14FMR LLCON SEMICONDUCTOR CORP46,931,67115.8%EDGAR
SC 13G2008-02-14WELLINGTON MANAGEMENT CO LLPON SEMICONDUCTOR CORP19,158,5216.6%EDGAR
SC 13D/A2007-05-09TPG ON HOLDINGS LLCON SEMICONDUCTOR CORP1,238,0000.4%EDGAR
SC 13G/A2007-02-14FMR CORPON SEMICONDUCTOR CORP47,291,27314.3%EDGAR
SC 13D/A2007-02-08TPG ON HOLDINGS LLCON SEMICONDUCTOR CORP16,275,0295.0%EDGAR
SC 13G/A2007-01-18BARCLAYS GLOBAL INVESTORS NA /CA/ON SEMICONDUCTOR CORP12,661,8573.9%EDGAR
SC 13D/A2006-12-29TPG ON HOLDINGS LLCON SEMICONDUCTOR CORP30,799,8879.5%EDGAR
SC 13D/A2006-12-28TPG ON HOLDINGS LLCON SEMICONDUCTOR CORP33,946,71510.4%EDGAR
SC 13G2006-12-12ALONIM INVESTMENTS INCON SEMICONDUCTOR CORP19,820,0006.1%EDGAR
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