Which coin did you buy at ATH? You can stoploss or hold to new ATH (if it is a good coin) 
PRL, EXLIX, XSPEC.
To be honest, I didn't check these coins, so I don't know if that are good projects, but for sure you have to HODL to new ATH! You will need a lot of patience, because your funds can be frozen even few months, but it is the best solution in such situation.