Nasdaq moves to make trading nearly 24 hours. Why some on Wall Street say that's a bad idea

Nasdaq is moving closer to around-the-clock stock trading, a shift that some on Wall Street are calling unnecessary — and potentially destabilizing.The exchange said it plans to submit paperwork to the Securities and Exchange Commission to allow U.S.-listed equities and exchange-traded products to trade nearly 24 hours a day, five days a week. If approved, the new schedule would launch in the second half of 2026.Under the proposal, Nasdaq would expand trading hours to 23 hours each weekday from the current ...