The small incident is now under control, this is not the end of world. Look at India, US stock market and how investors/ Traders behave despite worst situation. In past during 2nd world war Colombo had been bombed by Germans but Fearless people like Maliban Mudala, Nawaloka Mudalali did not run away with the panic other business people they hold their business and grab more opportunities, Fearless people are the winners of CSE.
Also media is hungry for news as it is their business, politicians heighten panic mentality in order and do their Current agenda. (20A).
As above Politicians, media companies, Stock market Mafias will try to get maximum benefit intensifying the fear.