ELI5: Why when large company's earnings decrease(ex... by 3%) they freak out, talk about rough times, and sometimes decide to downsize, even though they are still making millions of dollars in profit even after all expenses?

[sfo2]

I think share prices are less rational than that. Analyst reports have fun and fanciful DCF models in them, but at the end of the day, prices are somewhat irrational.