When Ryan Lei has an investment idea, he no longer has to spend days writing code and trawling through historical data to corroborate it. The 27-year-old quantitative trader in Hong Kong now delegates much of the grunt work to artificial intelligence. For a recent bet tied to a major technology initial public offering, Lei deployed Futu’s AI agents to collect data on similar listings over the past decade and parse their post-debut performances. The AI-assisted research informed a short position...