In traditional finance, sentiment analysis was typically performed over news media. However, in the crypto market, by the time an update reaches the news, it’s usually already too late to make money from trading. This may explain the adage “buy the rumor, sell the news,” meaning a new market trend must be spotted on social media as it happens or even before it happens.
Source: https://www.coindesk.com/consensus-magazine/2023/02/22/ai-could-help-build-more-efficient-crypto-markets/?utm_medium=referral&utm_source=rss&utm_campaign=headlines