Well, I didn't sell my bitcoins or altcoins for the money. In the past year, I brought some bitcoin when the price is low. Ever since and I keep exchange differenct type of altcoin with bitcoin in order to get a slightly growth on my portfolio. It was quite smooth at first, however when the price on bitcoin suddenly dropped in the early 2018, I stopped the trading as the price has dropped nearly 2/3. Until now, I still hold all the altcoin and waiting for recovery.