I am fairly new to option trading so am having a hard time making sense of this...
I had a $10 put option for VIVO with 02/21/20 expiration. As viewed in the Robinhood app, the option jumped from $1.90 to $3.10 ten minutes before market close on Feb 13. The underlying stock VIVO had been dropping from $8.20 to $8.06 over the course of the day but did not seem to be abnormally volatile. On Feb 14, the option opened at $1.90, right where it had been before the End of Day jump.
1) Did the option value actually increase to $3.10 before close on 2/13 or do you think this was a bug in Robinhood's software?
2) If the option did jump, what would explain the temporary increase of this magnitude?
3) Where can I find a historical chart or similar for this option (and others) to compare against what I see in the Robinhood app?
Here are some screenshots from the app: