Sell it before it will be dumped again. 
I would not be surprised to see this happens with a new coin on binance from binance IEO. It's always getting pumped after listing but for long term and yeah, you can take a look at some old tokens like TLM and many more. That looks like a promising token to hodl but it seems like you didn't aware with the crypto cycle. It will be dumped again once the hype will be done.
Never hold coins after reaching higher price and actually GMT as most profitable coin with fantastic pump to higher price and moment for selling it, don't late for selling GMT coin because have thousand percentage profit than launchpad price. I think most lucky for every one buy this coin trough price still under $0.4 before pumping above $3. I think GMT have real product and have several partner why make this coin could pump drastically, although now price have drop to $2,4 but looks potential for getting another chance for GMT coin back to higher price and will show new all time high price again. I would not be surprised to see this happens with a new coin on binance from binance IEO. It's always getting pumped after listing but for long term and yeah, you can take a look at some old tokens like TLM and many more. That looks like a promising token to hodl but it seems like you didn't aware with the crypto cycle. It will be dumped again once the hype will be done.