Bob Knights Liver said:
I've seen that before but I was actually able to sell these MBIO puts for $0.50 and $0.45. It didn't make sense that these got more expensive as the stock price moved up. I used the money to buy RKT calls. If someone would have told me a year ago I would have typed those sentences I would have whipped their butts for lying and then swore off whiskey
I don't know about the specifics of this situation, but this also is common. A principal component of options pricing is expectation of future volatility, which is not linear. It isn't just plugging variables into the Black-Scholes model and getting the "answer", it also involves trader judgment and emotion, which are very hard to quantify. It's an iterative process that impacts the current bid and ask prices. So, it is indeed quite possible for options prices to appear to be nonsensical, in the short term. Over time, it reverts to more what you would expect. There's no real good way to explain this, until you've watched it firsthand for a while.