Holdig your Bitcoin is best but instead, investing it in Altcoins for trading in short term basis is much better because you can gain more profits from Altcoins.
You can make good profits from altcoins only if you choose the right coin at the right time or else its an risky affair, as the life of altcoins is not too long and it can disappear at any time, and if you want to make good profits from it then you cannot afford to miss the pumps and dumps in order to make quick profits.