Four times a year, companies publish their results. Prices often jump or drop sharply on the day, which confuses new investors.
The reason is expectations. Analysts have already forecast the numbers, and today's price assumes those forecasts. The move comes from the gap between the forecast and reality.
So a company can post record profits and still fall, because the record wasn't quite as big as expected. Focus on the trend across several reports rather than one day's reaction.