Basically everyone who said this was bitcoin bubble part deux.
Basically everyone who mentioned having an exit strategy and locking in profits or knowing when to exit at certain price.
Basically anyone with an ounce of common sense who watched this happen last summer.
BTC price has increased by hundreds of times in the last coupple of years and there is nothing special about the $5 to $10 range. This drop has been caused in part by that sort of sentiment, but largly because of the panic around the change of pirates interest rates from very high to slightly lower very high and what happenened subseqently. The price may recover inside a few days, I wasn't going to sell at all originally and let it blow over, eventually it seemed to profitable to let go.