Subject: Re: Berkshire Trading All Messed Up
A few people on Reddit admitted to buying A shares using market orders.

At least one of those was from WallStreetBets where they make bad options plays. One guy from there committed suicide when a multi-legged play closed and it looked like he owed hundreds of thousands. Actually the play was slightly profitable and it would have all come out in the wash, but he didn't know enough about the strategy he was doing to understand how it unwound.

So using market orders during some kind of outage and getting burned is par for the course.