I sold some put spread on RNA and AMRN thinking no news in Sept. and I will be able collect the premium on high IV.
With these trades, I waited too long and was too greedy. With high IV, the market or someone knew that there was a news coming, especially RNA. I had a very nice profit till last day Sept. expiration. In hind sight, I should have sold when I made most of the premium that I would have collected.
A learning experience.
Disclosure: I am long RNA.