Stock Market News Briefs: General Motors, Google, Morgan Stanley, Nike, New York Mortgage Trust, Spectra Energy Partners, LP, Time Warner, UBS AG, Westport Innovations IncZacks Investmentupdated Jun 29, 2011TweetAt GET.com we maintain complete editorial integrity on our content & provide transparent & unbiased information. Companies don't pay us to include their products although we receive a compensation when you successfully apply to products from our partners. See how we make money here.At GET.com we maintain complete editorial integrity. Google Inc (GOOG) unveiled social networking site Google+ which will enable it to compete against Facebook. The application is now in its trial period Car maker General Motors (GM) said it has concluded a deal with natural gas engine maker Westport Innovations (WPRT) which will enable it to cater to the light duty vehicle segment A day after Monster Worldwide (MWW) announced the launch of BeKnown, shares of the company rose more than 9%. Beknown is a networking application which is specially designed for Facebook users not only to create a professional network but also to search for career opportunities Analysts at Morgan Stanley (MS) initiated coverage on LinkedIn Corp. (LNKD) with an "Overweight" rating. Following this development, shares price of the social media company rose 12.02% Share prices of NIKE, Inc. (NKE) spiked up 10.14% after the company reported fourth-quarter earnings results that topped the Street's estimates Analysts at BMO Capital downgraded shares of Motorola Mobility Holdings Inc. (MMI) to "Underperform" rating citing stiff competition in the smart phone market segment New York Mortgage Trust, Inc. (NYMT) announced that it was going ahead with its secondary offering of 2 million shares. Following this development, shares of the company dropped 5.46% to close at $7.44 Youko.com Inc. (YOKU) said it has entered into an agreement with Time Warner Inc. (TWX) which will allow Youko.com to offer American movies to Chinese Internet users Analysts at UBS AG (UBS) upgraded Spectra Energy Partners, LP (SEP) to "Buy" rating from "Neutral" rating in its research note to investors GENERAL MOTORS (GM): Free Stock Analysis Report Editorial Disclosure: Any personal views and opinions expressed by the author in this article are the author's own and do not necessarily reflect the viewpoint of GET.com. The editorial content on this page is not provided by any of the companies mentioned, and has not been reviewed, approved or otherwise endorsed by any of these entities. Opinions expressed here are author's alone, not those of the companies mentioned, and have not been reviewed, approved or otherwise endorsed by any of these entities.