Among such groups were the Black Keys, the main-stage headliners on opening night, and earlier in the day the Sheepdogs, a band from Saskatchewan that favors '70s-style Southern rock, including dual lead guitars.

WSJ: Coachella's Modern Mosaic | By Jim Fusilli

In Friday trading, Potash Corp. of Saskatchewan Inc. shares are currently down about 1% on the day.

FORBES: Potash Corp. of Saskatchewan Goes Ex-Dividend Soon