US STOCKS-Wall St edges up, rebounding from worst-ever start to a year
* Oil prices fall for sixth day in a row
* Apple gives biggest boost to S&P 500, Nasdaq
* Under Armour hit by Morgan Stanley rating cut
* Alcoa to kick off earnings season after close
* Indexes up: Dow 0.44 pct, S&P 0.45 pct, Nasdaq 0.49 pct (Updates to open)
By Abhiram Nandakumar
Jan 11 (Reuters) - U.S. stocks broadly rose on Monday, led by Apple, as they rebounded off their worst-ever start to a year and with the corporate earnings season set to kick off.
All 10 major S&P sectors opened higher, before the energy and materials sectors reversed course, staying under pressure as oil prices fell for the sixth day in a row, hovering near 12-year lows.
Global stocks were mixed as jittery investors looked for stability after a bruising start to the year due to declining oil prices and mounting worries about a China-led slowdown in global economic growth. Continuación...