U.S. stock markets edge up after intraday swings
Major U.S. indices rose modestly-S&P 500 by 0.1%, Dow and Nasdaq similarly-after a volatile session featuring swings of nearly 1%.
Why it matters
For investors and 401(k) holders, small gains after wild swings offer calm but show markets remain jittery.
The big picture
Sets the tone for this week: volatility hasn't eased, so stay alert.