The Securities and Exchange Commission will examine ways to ensure markets are set up for trading 23 hours a day, five days a week, this fall. The SEC is looking at 23 hours a day rather than 24, leaving an hour to bring down the trading system and update software. The SEC will hold a public roundtable on Sept. 17 to discuss the infrastructure, risks, and readiness for round-the-clock stock market operations. At Yahoo Finance, she covers the Federal Reserve, Congress, the White House, the Treasury, the SEC, the economy, cryptocurrencies, and the intersection of Washington policy with finance. Click here for in-depth analysis of the latest stock market news and events moving stock pricesRead the latest financial and business news from Yahoo Finance