### Comment:
Explanation - I've been staring at this page on and off all day, and the bid ask spread was normal, with the option price displaying as the average between those. Twice during the day, the price just plummeted, and the cause was someone placing an essentially unfillable buy order, presumeably as a troll. This doesn't effect the 'actual' price you'd pay if you bought a contract, I know, just the displayed price.

### REPLY:
I do the troll bids all the time. Sometimes it’s so annoying if you do a single contract they’ll buy it just to make you fuck off.

### END.