Analyst Upgrades

• Las Vegas Sands (LVS) to outperform from neutral at Credit Suisse.
• Boston Scientific (BSX) to outperform from sector perform at RBC Capital.
• Windstream (WIN) to buy from hold at Citigroup.
• Expeditors (EXPD) to buy from neutral at UBS.
• A123 Systems (AONE) to neutral from underperform and Chesapeake Midstream (CHKM) to buy from neutral at BofA/Merrill.
• AvalonBay (AVB) to outperform from neutral and Post Properties (PPS) to neutral from underperform at Cowen.

Analyst Upgrades

• Cisco (CSCO) to outperform from perform at Oppenheimer.
• Cognizant (CTSH) to buy from neutral at Goldman.
• Polypore (PPO) to outperform from neutral at RW Baird.
• Elan (ELN) to buy from neutral at UBS.
• Millicom (MICC) and NuStar GP Holdings (NSH) to overweight from equal weight at Morgan Stanley.
• Teekay LNG (TGP) to equal weight from underweight at Morgan Stanley.
• American Railcar (ARII) to outperform from market perform at Morgan Keegan.
• Texas Instruments (TXN) to buy from neutral at Sterne Agee.

Mergers have been commonplace in the telecom sector in recent years, and utility expert Roger Conrad expects this trend to continue. Supporting these mergers, he notes, has been industry competition, technological advances, less-stringent regulation, the natural advantages of scale and a glut of capacity.

The editor of The Utility Forecaster points out that these factors triggered dramatic industry consolidation beginning in the late 1990s, when Wall Street threw "tens of billions of dollars at hyped-up startups." More mergers, he says, are "almost surely on the way."

One likely takeover target? Alltel Communications (NYSE:AT). The company, says Conrad, has been a prolific consolidator of rural wireless assets in recent years and now serves more than 11 million customers nationwide. Debt, meanwhile, is half last year's levels because of the 2006 spinoff of its wireline assets as Windstream.

Conrad explains, "Low debt, low customer turnover and robust growth have already attracted takeover interest from private capital, as well as national wireless giants Verizon Wireless and Sprint Nextel."