Pionex has a grid trading bot, that allows you to automatically accumulate more of a coin that you are long-term bullish on. If they ever get a gold-backed coin like KBC, I’m set. They also have an arbitrage Robot called PiHodl, which offers about 10% annual return.
A Pionex blog post covers Pionex and other grid trading options, the most exciting of which is BitUniverse.
Finally, you can profit on the fluctuations of the coins you want, on auto-pilot!
They have a ton of grid-trading bots, but I like the infinity bot, which is described here.