$AMC Entertainment (AMC.US)$   ok I did this yesterday and w...

$AMC Entertainment(AMC.US)$ ok I did this yesterday and with 4 stocks and the end of after hours I bought a share from stocks that were not moving and the ask was higher than the bid. The 3 of 4 price went up and saw big green candle except for AMC. AMC price went up and down quick to 39.96
the computer was programmed to make it go down on price there was glitching and the other trading platforms prices were all different prices for closing and last price was different as well.
here are the shots of me buying a share at asking when the bid far from each other and the current market price.