House bill would expand the pool of people who can buy certain investments — if they can pass an SEC test

American Airlines briefly grounds flights nationwide citing a technical glitch.

Pershing Square’s Bill Ackman hiked his takeover offer for Howard Hughes Holdings to create a “modern-day” Berkshire Hathaway.

Mike Santoli breaks down the differences in market valuation, sentiment and other factors between now and the Feb. 19 peak in the S&P 500.