Next ones to tank will be Tether, TRX, Cardano and XRP. The first because it's a scam and the last 3 because people were only buying into them because of hype. Wouldn't be surprised if EOS fell off from top 50 as well since it still doesn't even have a product and is worth nearly 6 billion? Lol

*Enters the dragons den*

Hi, I'd like to sell a crypto currency made by a great developer, it hasn't started yet and no one knows what it'll look like but we promise it'll be great.
Dragon: Ok what assurances are we going to get and how much do we need to invest for a stake?
Me: I'll give you 10% for 600million, you'll get some magic tokens until we actually make something. Until then you can trade your tokens with others!
Dragon: What if no one else wants to buy the tokens because they're not tied to any actual business model or product?
Me: Lalallalalaa I can't hear you Hype hype hype just buy it