Nasdaq seeks SEC approval for 23-hour trading

S&P 500 Health Care Stocks Sink As Time Runs Out On ACA Subsidies

NASDAQ Index, SP500, Dow Jones Forecasts – Stocks Remain Under Pressure As Unemployment Rate Jumps To New Highs

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

Wall St slips on losses in healthcare stocks, focus on 'distorted' economic data

U.S. economy sags in December, S&P says, due to tariffs, inflation and softer sales