Alaska Air Group announced Thursday a 2-for-1 stock split, effective July 9.

The second such split since 2012 reflects the strong rise in Alaska’s stock — more than 160 percent since January 2013.

The stock split will double Alaska Air Group’s outstanding shares from approximately 68 million shares to about 136 million shares.

A stock split has no effect on the value of the company but makes each share less expensive and is thought to make the stock more attractive to retail investors.