Why do all investment institutions and all professional trading institutions use AI or even rely on AI?

Because after professional targeted training, AI becomes a super trader. It is proficient in all technical indicators, understands all historical market conditions, obtains the latest news faster than anyone else, analyzes more accurately than anyone else, remains unemotional during the trading process, operates 24 hours a day, and can promptly stop losses in extreme market conditions, making it far more reliable than ordinary traders.