CSIQ [Canadian Solar] SC 13G/A: (Original Filing)
[CUSIP No 136635109 13G Page 2 of 5 1 NAMES OF REPORTING PERSONS Columbia Wanger Asset Management, L.P. 04-3519872 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) [ ] (b) [ ] 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5]