Your altcoin goes up 50%. Options:
1. Hold. You think your alt will beat BTC returns.
2. Sell initial investment to BTC, leave rest in alt. You think BTC will beat your alt (or you are unsure).
3. Sell initial investment to USD, rest in alt. You think BTC and alt will go down....??
One coins goes up,My strategy is to take profit and allow the remaining to flowing in the space.To avoid dumping untimely I do detailed research on different altcoin,to decide when best to sell and buy