Still a good coin to hold if you asked me, you can sell some but you must retain some if you are disappointed, it's time to shine will eventually come, good volumes and strong support and it's on a big exchanges, what can you ask more.
For my own opinion, I think this period is even the wrongest time to lose any quantity in some of these top token that we know, I mean now that the altcoins season is by the corner, if you check the history of this coin, the op will see that they have had a very great history and this will repeat itself again during the next altcoins season.
Bitcoin is still the market dominance now, but I am already seeing the signs that it may be heading for consolidation soon which the way the price has been lately and once bitcoin heads for consolidation, the dominance will be on halt for altcoins to have their own dominance. I really see ADA doing at least 10x in the next bull run, every investors of ADA just need to be a little bit patient with them, they have real use case and I am sure they will pick up very soon.