Among the 13 prominent companies to have announced or completed a stock split in 2024, there are two whose valuations make no sense.Although hype surrounding the rise of artificial intelligence (AI) has been a key factor that's sent Wall Street's major stock indexes to record levels, it's important not to overlook the role stock-split euphoria has played in lifting the valuations of some of Wall Street's most-influential businesses this year.A stock split is a tool publicly traded companies have at their di ...