I think the next bubble will top about $2500 or more, so I won't do anything at $1000. At next bubble top (which I'll try to pinpoint) I'll sell about 10-25% of my holdings.
If bitcoin goes to $1000 better for you to sell rather than burst and drop again to 200. Many investor must sell all his bitcoin when it touch $1000 and then they will buy lower then 1000 again and start to invest again. It wont raise again till $2500 may be in a couple of years after that
returns to the previous bottom,two times in a row? seems unlikely, it would mean that bitcoin is 100% manipulated...if we reach 1k again it won't be because of willy bot this time, therefore the price is likely to remain around that amount, and not falling again at current value
I think there is chance where bitcoin will drop significantly after it hit 1k because bitcoin always in a volatile and the market always play their price plus many people will sell it when it hit 1k and it seems there will be enough chance back into current price again