 And after months of talks, Boeing has agreed to buy its key parts supplier Spirit Aerosystems that it split off two decades ago in an all-stock deal worth around $4.7 billion. Boeing said the move will improve plane quality and safety. An online brokerage firm, Robinhood Markets, is investing in artificial intelligence thanks to its latest acquisition. Robinhood is acquiring Pluto Capital, an investment research platform that uses AI to offer tailored investment strategies.