Hold it. It will surely follows bitcoin price and will be second to bitcoin in terms of marketcap.
It is already in the second place mate long time before.
I think holding is the best idea to gain much profit in long term because its very promissing project and its the mother of new great project. I think you will not regret if you hold it.
i agree that etherium is been a second place next to bitcoin ever since they both came out but lately etherium went to the third spot as bitcoincash recently dethrone him to the fact that bitcoincash has skyrocketed and pump unexpectedly and majority of people suspected is as only a market manipulation but luckily bitcoincash has now subsided and got back on the third spot before etherium and etherium has now regain his throne on the second spot.
@op you should hold it because etherium is still doing good and it manage to increase a little bit and you should also convert some of those into bitcoin for investment and other half is for potential alts just for trading purposes.