For decades, the US stock exchange pressed the pause button every night, shutting down the market for hours. However, after December of this year, as the US stock market moves to an all-weather, 23-hour trading mode, the exchange's server trading lights will stay on longer.

For decades, the US stock exchange pressed the pause button every night, shutting down the market for hours. However, after December of this year, as the US stock market moves to an all-weather, 23-hour trading mode, the exchange's server trading lights will stay on longer.