Tesla said on Wednesday it has built initial versions of an affordable car, a move likely meant to stem the steep decline in sales the company has experienced in markets across the world. Elon Musk's electric vehicle maker posted the worst quarterly sales decline in more than a decade and profit that missed Wall Street targets,

Tesla's shares price declined 1.74% for the week on Friday, two days after posting declining profits for a third straight quarter amid increased competition and a pending loss of federal tax credits....

Shares of Tesla ( TSLA) fell 9% on Thursday following another dismal earnings report, released after the bell Wednesday.

Musk told analysts that the service will be available to probably “half of the population of the U.S. by the end of the year — that’s at least our goal, subject to regulatory approvals.”