Stock Market Trivia

Market history as quizzes, so headlines rattle you less

Android

Fintech

Investing

Hi Product Hunt! While writing questions for this app, I lined up three moments when a stock moved hard on something that simply wasn't true. 2000: a fake press release said Emulex was under investigation. The stock fell about 62% in 16 minutes. 2013: the AP's Twitter account was hacked and posted a fake bulletin about an explosion at the White House. The S&P 500 dropped - and was back where it started about three minutes later. 2021: Elon Musk posted "Use Signal" about a messaging app that isn't even listed. Buyers sent a small Texas medical-parts maker called Signal Advance up dozens of times over in three trading sessions. What struck me was that in each case, the expensive move was the fast one. Selling in the first few minutes. Buying a name you'd only half read. And it isn't just fake news. In February 2026 Nvidia reported record revenue and record profit, and its shares fell about 9% over the next two days. If you don't know that good news is often already in the price, that looks like the market has gone mad. If you do, it looks like Tuesday. Headlines feel new every time. The patterns behind them mostly aren't. Stock Market Trivia is my attempt to let you meet those patterns in a five-minute quiz, before you meet them with your own money. WHAT IT ACTUALLY DOES FOR YOU Some day the market will drop 5% and your phone will fill with red. The idea is that by then you've already seen a fake bulletin reverse in three minutes, a record quarter get sold off, and a 34% crash in 2020 - and you know those stories didn't all end the same way. You still feel it. You just don't have to act on the first feeling. See it happen, then guess what came next. Every question is a real market moment with three choices. You commit to an answer before you see what actually happened, which is exactly the habit a scary headline tries to skip. The lesson - and the wrong lesson. Every answer comes with an explanation, and most of them also say what the story does NOT prove. Netflix fell about 77% in 2011 and went on to become a streaming giant - but "buy whatever crashed" is the wrong takeaway, because far more companies take that kind of beating and simply disappear. That second half is the part that keeps you calm. How the machine works, not just the drama. Crashes are the easiest stories to collect, so I capped them at around a quarter. The rest covers how orders get matched, what a short squeeze actually is, why an index can move while most of its stocks don't, investor psychology, and markets around the world. Five questions a stage, three levels (Apprentice, Dealer, Master), 16 languages, and every question works offline. Free, with ads. No subscription. No account. And it will never tell you what to buy or when to sell. WHY I THINK THIS MATTERS Most investing education assumes the hard part is choosing what to buy: charts, ratios, picks. For some people it is. But a lot of expensive mistakes don't come from picking wrong. They come from reacting wrong - selling into a three-minute panic, piling into a ticker that sounds right, trusting a pattern that stopped working once it was published. You can't learn that from a tip. You learn it by having seen it happen before. I'll admit I expected the research to make me more confident about markets. It mostly did the opposite, in a useful way. Almost every famous story came with a "but" - a survivor who looks wise only because the failures dropped out of the data, a rule that faded after it became popular. I came out less sure of any single story, and a lot less inclined to rush. Two questions for you: Which past market event do you wish you had known about before your first real market scare? I'll research the best ones and add them in a future update. And: does knowing market history actually make people calmer when prices fall - or does everyone panic anyway, and am I overstating it? Thanks for taking a look. I'll be here all day reading and replying.