Stock markets in the US, Europe and Asia are moving toward nearly round-the-clock trading, responding to growing overseas demand and competition from always-on crypto and prediction markets. But longer trading hours don’t necessarily mean better markets. Thin overnight liquidity could bring wider spreads, sharper price swings and new operational risks. Bloomberg TV Markets Managing Editor Dan Curtis joins Stephen Carroll to discuss the race toward 24-hour trading, and why more time to trade could come at a cost.