Hacker News Reader

In USA, earnings are always released either before opening of market or after closing.

AFAIK that is standard practice, at least in the US

https://qz.com/300486/the-best-times-to-release-bad-earnings... says that as of 2012 only 2% of earnings are announced while the stock is tradition, down from 20% in 2000. There is no reason to believe that this trend has changed.

yea. either happens before opening or after closing.

It reached $311 during the day

It's at $352 now, so the market seems to really like their report.

Markets often respond positively just because doubt is removed. Regardless of what the report said, it's out, and people can look forward.