But if you goto to http://www.cse.lk you can clearly see that the biggest contribution was from BUKI, followed by SLTL and CARS.
I am posting this here as an example as to why you should take everything you read with a pinch of salt. Buying shares on newspaper articles (which in the case of Sri Lankan business news pages is mostly press releases written by the company not by a journalist) is just suicide.
But people have been buying on news stories anyway, for the last year and making a buck on it too, but that's just the exception not the rule.