Subject: Re: Buffett, will he shock most of us ?
Well, we do know that when the $5.15 trade took place, there were 58 contracts on the ask at $5.20. And we also know that only 4 contracts traded at $5.15

Where do you get that information? I usually trade at Schwab, using their simple order form that only shows bid and ask, without sizes.

Thanks to Jim I just remembered they also have a "Contract details" screen showing current(!) sizes of both. But how to you get a full list of what happened? Surely(?) not at Schwab. IBKR, where I also have an account? Or a Nasdaq/NYSE or whatever public website?