STORY: :: FileThe Nasdaq is seeking to roll out near round-the-clock trading of stocks.The stock exchange is one of the world’s largest and home to tech heavyweights Nvidia, Apple and Amazon.It plans to file paperwork to the U.S. Securities and Exchange Commission to expand trading hours from 16 hours a day to 23 hours a day, five days a week.Nasdaq’s plans would see its trading week kick off on Sunday at 9 p.m. Eastern and end Friday at 8 p.m.:: FileA trading day would be split into two sessions with an hour break at 8 p.m. for maintenance, then start back up at 9 p.m., and would still feature opening and closing bells.It follows plans announced both by the New York Stock Exchange and Cboe Global Markets for those exchanges to move to nonstop five-day-a-week trading.Investor demand for nonstop trading of U.S. stocks has surged in recent years.That’s led regulators to introduce new rules and allow proposals from major exchanges to enable trading beyond traditional market hours.Today the U.S. stock market represents almost two-thirds of the market value of listed companies around the globe……and foreign holdings of U.S. equities hit $17 trillion last year, according to Nasdaq data.Advocates for moving closer to 24/7 trading argue it will allow investors, especially those outside the U.S., to react more quickly to events that happen outside regular market hours.Major Wall Street banks are cautious about the push, pointing to anxiety over lower liquidity, more volatility, and uncertainty over returns on investment.