Capt...Interesting dilemma...As we all know, the market reacts to good news with greed and to bad news with fear...In both instance, the market usually over-reacts and then corrects.
If the market has over-reacted to good news, sell some shares and then buy back at a lower price
If the market has over-reacted to bad news, buy some shares and sell at a higher price
In order to make this work, you have to know a lot about your stock so you can fully interpret the importance of the good news and the bad news. and their influence on the stocks' near and long term fortunes.
This becomes a problem when you own more stocks than you can
adequately keep up with.
In the case of Amarin's better Q2 2022 than Q1,2022, I believe it presages good things to com...and i would not sell unless there was a gross over-reaction to the good news.