i think No, because the amount that had been stolen by the theft from bitfinex is not small . its amount will definetly change the price of the bitcoins .
if the btc had been sold then there will be sharply fall in the bitcoin amount will take place but there is nothing like that instead of small change in rate due to change in the value of doller .
no it is not small at all you are right on that! but they can use a mixer, trade some on darknet, some other placed on ICOs, even rent mining rigs (not talking about cloud mining), buy some other good using btc, and when the times come to cash out, they will selling small amounts, there is a million ways to get away with that but also there is a million ways to get you, but less likely the 2nd story will not happen !
