Suddenly Pump And Dump Of SBD

Sometime In Coinmarket We See That a Coin Suddenly Pupm. Sometimes they Boosts To more than 100%. But Mostly I Saw That Those Coins Also Fall Down As Quick As They Pump.
Same Happen With Steem Dollars (SBD). Yesterday After 08:00am it Start Pumping.
I Was Looking At it's Price which was Growing Within Seconds And Reached To $2.5 USD.
Stay For Sometime. And from Last Morning, its Satrts Falling Down.
Now It's Price is $2.01. But It Is Still Good As Compare To Whole Week's Graph.