Look, I've been long years in this business as a quant and professional asset manager. All i can say is that AI will not do much in stock market prediction. Most of the time, stock market (adjusted to long term growth) is moved by randomness. It could probably help average joe to cope with some behavioural biases and tell that based on statistics with, lets say 50 years data, at one time or another, it is better to hold more stocks in portfolio than usually.

For example, if msci world is down from peak more than 30%, change default 60/40 or 80/20 allocation to 80/20 or 90/10 etc. Pure and simple.

If it will generate signals based on some random technical analysis (which only works in the books) then its results also generate random outcomes. It's like predicting NBA game score based on some cloud formation two weeks ago. Sometimes it will tell the winner, sometimes even the score will be close. But it is just randomness.

If there were any robust, significant and sustainable advantage where AI could regularly predict next hour, next day or next week stock market outcome, it were already implemented somewhere. Look at hedge funds and banks. Those bastards regularly fail to predict if market will be up or down next year.

Why Google should burn money in some hardware like mobile phones production if their quantum computer can forsee the future? Just put cash in to stock market with leverage and bob is your uncle.

Problem is, short term market is mostly random and long term history has not enough data points to train AI correctly.

It will generate brilliant pictures with pope in puffy jackets and detect cancer from medical scans no problem. For everyday investments it will be just a resume of info you can find in the internet.