Sort:  

The Bitcoin market can only be manipulated by buying which can make the price go down, but on the subsequent purchase the price would tend to go up again with a net sum of zero. Unlike the equities market which can be manipulated with derivatives, short sells, etc. I placed an article in Steemit on Thursday about this exact scenario.

Volatility In The Bitcoin (and others) Market

Coin Marketplace

STEEM 0.21
TRX 0.20
JST 0.035
BTC 91274.52
ETH 3158.75
USDT 1.00
SBD 3.10