GM stock extends winning run to 9th session, trading at highest since March

Shares of General Motors Co.
GM,
+0.38%
on Friday are poised to end at their highest since March 8, up for the 9th straight session. The stock is up nearly 10% over that period. GM has gained 18% this year, compared with an advance of about 15% for the S&P 500 index.
SPX,
-0.29%
GM earlier this week reported a 19% jump in its second-quarter U.S. auto sales and said all of its four brands saw double-digit growth.