It is important not to neglect the power of altcoins, or non-bitcoin cryptocurrencies. Altcoins are less prone to public speculation. Their smaller market caps are more prone to larger swings in pricing. Each altcoin has a purpose and an intent, catering to different niches. There are larger risks associated with investing in altcoins, but also larger rewards. My personal favorites are DASH, ZCash and Monero.
An example would be allocating percentages based on your risk tolerance. Its something like managing a fund. Some altcoins are more stable like Ethereum, while some are more prone to fluctuation. In one instance a trader might allocate 50% in Bitcoin, 25% in Ethereum, 20% in DASH, and 5% in ZCash.