But if you're the first to learn of it, trade, and then tell others about it so they trade, you still have the timing benefit. That's the thing of current-day amateur trading; some people get the first scoop, then hype it up on e.g. reddit for the masses to follow along. This was also a thing in crypto trading, where there are groups of amateur traders that plan internally to cause the stock market to change. They start the change, hype it up on social media, then sell off again before the hype hits its peak.