Why so much weight in after hour and pre-market trading? Volume is low but it can dominate the trend for the regular market.
Example:
GOOGL up 4.30% during after-hour and pre-market trading.
Pre-market volume 167,000.
Average daily volume 1,861,612.
I'm sure Baron or Magna will look into this and report his findings.
I believe the usual action is to ban all known concurrent user names and let the person keep one.
McDonald's - as in MCD? They are 125 billion market cap.
AMZN up 14% after earnings is possible - unlikely - but possible.
Buying OTM July27 calls would be the way to trade AMZN earnings.
The bid/ask definitely widens as the market closes.
Market orders most likely will be filled at the bid/ask.
I assume at 4:00pm - even for the options that trade to 4:15pm such as SPY and QQQ.