i bought a bunch it at $0.4 it yielded nicely but dropped in the past week. what would you recommend i'll do keep holding it or let it go with a small profit?
It wouldn't be smart to sell at a loss, so if you're looking for profits, wait until the next pump and sell it.
As of now, Cardano is an overvalued vaporware, it doesn't even have a finishing product so there's no reason to have a $10 billion market cap. Anyone buying in ADA is just buying dreams and hopes. If you want to hold it, either wait for another pump in the market to sell, or hold it until 2020 which is the date their roadmap states that everything should be done.