Zynga shares shine on analyst upgrade
 

Zynga�s ZNGA +6.64% stock rose 7% to close at $6.26, bucking a sector-wide retreat and gaining back some ground lost this week. The stock is on track to end the week with a 5% loss, and is still down more than 30% year-to-date.

Baird analyst Colin Sebastian raised the stock�s rating to outperform from neutral, arguing that �headwinds appear largely priced in.�

No doubt one of the biggest headwinds has been Zynga�s ties to Facebook FB +5.00% where most of its social games are played. The social-networking giant�s shaky debut as a publicly traded company has taken its toll on Zynga.

Facebook�s shares have fallen more than 20% since the company�s initial public offering two weeks ago. Zynga has slipped about 13% in that same period.