Troubled movie renter Blockbuster has been looking for a buyer, and we learn today that DISH Network (DISH) has won the auction for the company, with a deal valued at $228 million in cash.

Blockbuster was once the biggest name in video rentals, but it has been unable to keep up with changes in the market created by companies such as Netflix (NFLX) and Redbox.

Charles Schwab (SCHW) has announced its decision to acquire optionsXpress (OXPS) in a friendly all-stock deal. This deal will help Schwab compete with other firms like E-Trade (ETFC), Ameritrade (AMTD), and Bank of America (BAC), which all have large online brokerage services and are vying to provide investors with the best tools and services.

The deal, which is expected to close by the third quarter of 2011, will cost Schwab $1 billion, and the company will issue 60 million new shares to swap each outstanding share of optionsXpress with 1.02 of its own shares. Our $19.74 price estimate for Charles Schwab is at a premium of almost 12% to its current market value.

General Mills (GIS) is buying a 50% stake in Yoplait from PAI Partners for roughly $1.1 billion, Reuters reported Thursday, citing sources close to the deal.

The deal is a nice fit for both companies. Yoplait is second to Danone (DANOY) in the yogurt market. General Mills has the industry presence to promote the Yoplait brand, something that would benefit PAI.

For General Mills, Yoplait would add an another revenue stream to an already diversified conglomerate. Some of General Mills' products include cereals, Haagen-Dazs ice cream, Green Giant vegetables and Progresso soup. The company has already been distributing Yoplait for 30 years, so the distribution network is already in place.

Warren Buffett invested $232 million in BYD (BYDDF), a Chinese auto maker during the financial crisis, as reported by Reuters. As of December 2010 Buffett's 225 million shares were worth $1.18 billion. In 2009, the shares were valued at just under $2 billion. So from 2009 to 2010, Buffett's Berkshire Hathaway (BRK.A) lost about 40% of his investment.

But that is just the beginning. Now there is criticism surrounding the new Chinese car, dubbed the hybrid car F3DM.They center around two major areas, authenticity of the design and the overall workmanship of the car itself.

NYSE Euronext (NYX) and Deutsche Boerse AG of Germany recently announced a merger that will create the world's largest financial exchange. NYSE is the world's largest stock exchange in the world by market capitalization of its listed companies and Deutsche Boerse AG is the largest stock exchange operator in Germany. NYSE Euronext's main competitors are Nasdaq OMX (NDAQ) and CME Group (CME).

We have a price estimate of $34.77 for NYSE Euronext's stock, which stands below market price.

Yahoo is still trying to play catch up. Helped by cost cuts, Yahoo! (YHOO) posted late Tuesday fourth quarter income of $312 million, or 24 cents a share, more than double last year's income of $153 million, or 11 cents a share, according to the Wall Street Journal. Revenue fell 12% to $1.53 billion from $1.73 billion.

Net revenue, which excludes commissions paid to partners, fell 4% in the quarter to $1.22 billion from $1.26 billion in the year ago period. Excluding the Microsoft (MSFT) impact and certain divestitures, revenue grew by 2% in the quarter.

Aéropostale (ARO - option chain) shares are soaring today on rumors that the company could go private in a deal with a private equity company worth $40 per share. ARO has not commented on the rumor. Even if ARO executives do not want to sell, this kind of interest could establish a floor for the stock price. If you think that the stock won't fall by too much in the coming months, then now could be a good time to look at a bullish hedged trade on ARO.

ARO opened this morning at $24.62. So far today the stock has hit a low of $23.98 and a high of $25.00. As of 12:25, ARO is trading at $24.61 up 0.95 (4.0%). The chart for ARO looks bearish and S&P gives ARO a negative 2 STARS (out of 5) sell ranking.

Riverbed Technology (RVBD - option chain) shares are rising today on reports that the company is in negotiations to buy Radware (RDWR) for $47 per share. Rival Hewlett-Packard (HPQ) reportedly has offered $45 per share for RDWR. If you think that the stock won't fall by too much in the coming months, then now could be a good time to look at a bullish hedged trade on RVBD.

RVBD opened this morning at $35.50. So far today the stock has hit a low of $34.58 and a high of $36.91. As of 12:20, RVBD is trading at $34.99 up 0.17 (0.5%). The chart for RVBD looks neutral and S&P gives RVBD a neutral 3 STARS (out of 5) hold ranking.