Because EOS has a snapshot recently, it will airdrop tokens.
That's why EOS prices have risen so much, but when EOS prices have risen sharply, someone has chosen to sell.
EOS airdrop is definitely the top reason for such breakthrough in price, but I would say that EOS hackathon news are also pretty important here. At least, these are the news their official twitter channel currently has.
I wonder why in the Russian cryptocurrency news online people are mainly saying that EOS is a ponzi and the price pump is not worth attention, since the project is very dubious.
I think EOS is pretty cool and legit. Attracting attention to any top cryptos is very important, because generally the market is doing really bad.