It's called manipulation.
You are watching groups attempt to shake out people in order to amass more at a lower price.
Second oldest trick in the book.
Tip: Put your coins in a wallet and quit looking at the price every 10 minutes. I know it's tough, but the rewards will pay off.
Personally, while I wait for the 10x return of my investment, what I follow closely is my staked TOA as they come in. I'll start following the price when it reaches 9x (!!!).
TOA has a very advantageous staking algorithm (with low 2% inflation), close to CBX's PoSP or BlackCoin's POS3 - TOA owners who are not staking forfeit their gains to those who are - staking is very good with this coin, try it!
All those who leave TOA coin at the exchanges, do not benefit from this amazing staking algo. Many thanks to them!