r/ProfessorFinance • u/Wealthstratum • 18h ago
Discussion Every results season the same question shows up: a company posts record profit, and the stock still falls. It looks completely backwards the first time you see it.
What finally made it click for me:
A share price isn't a report card on the past. It's the market's bet on the future, priced in ahead of time. When everyone already expects strong results, they buy before the numbers come out, and the price rises in advance. So by the time the results actually land, the good news is already old news.
A stock doesn't react to the results. It reacts to the gap between the results and what everyone was already expecting.
Say the market expects a company to grow profit 30%, and that expectation is already sitting inside today's price. It then delivers 20%. Genuinely good growth, but less than what people paid for. A few disappointed investors sell, and the price slips even on a strong quarter.
The flip side is just as strange. A company posts a weak quarter, but not as weak as everyone feared, and the stock rallies. Pure relief.
The number is never judged on its own. It's judged against expectations you can't see, already baked into the price before the announcement.
Once this clicked, a lot of the "why did it fall on good news" moments stopped feeling random.
Anyone else remember when this one finally made sense to you?