Analyst Upgrades

• Abercrombie & Fitch (ANF) to positive from neutral at Susquehanna.
• tw telecom (TWTC) to outperform from neutral at Cowen.
• Agree Realty (ADC) to buy from neutral at Janney Capital.
• Millicom (MICC) to buy from neutral at Nomura.
• BioMed Realty (BMR) to outperform from market perform at FBR Capital.
• Realty Income (O) to buy from neutral at BofA/Merrill.

Analyst Upgrades

• Heico (HEI) to outperform from market perform at FBR Capital.
• Eaton (ETN), Silgan Holdings (SLGN), MYR Group (MYRG) and Shaw Group (SHAW) to outperform from neutral at RW Baird.
• Infosys (INFY) to buy from Neutral at Nomura.
• Isle of Capri (ISLE) to buy from neutral at Merriman.
• NovaGold (NG) to sector perform from underperform at RBC Capital.
• CarMax (KMX) and Rockwell Collins (COL) to outperform from neutral at Credit Suisse.
• DHT Holdings (DHT) to overweight from neutral at JPMorgan.
• Cabot Oil & Gas (COG) to overweight from underweight at Morgan Stanley.

Analyst Upgrades

• Time Warner Cable (TWC) was upgraded to outperform from market perform at Bernstein.
• Citigroup upgraded MEMC Electronic (WFR) and Skilled Healthcare (SKH) to buy from hold at Citigroup.
• Administaff (ASF) was upgraded to buy from hold at Roth Capital.
• The Buckle (BKE) was upgraded to buy from hold at KeyBanc.
• BofA/Merrill upgraded DreamWorks (DWA) to neutral from underperform.
• Corrections Corp. (CXW) was upgraded to buy from neutral at SunTrust.
• Marvell Technology (MRVL) was upgraded to positive from neutral at Susquehanna.

Analyst Upgrades

• Piper Jaffray upgraded Tractor Supply Co. (TSCO) to neutral to underweight ahead of the company's investment meeting Tuesday and raised its target on shares to $55 from $46.
• Barclays upgraded Norfolk Southern (NSC) to overweight from equal weight, citing earning potential and core price fundamentals. The firm raised its target to $52 from $55.
• KeyBanc upgraded Denbury Resources (DNR) to buy from hold based on expectations that the EAC acquisition has material value that is not reflected in shares. The firm has a $19 target on shares.
• BP Plc (BP) was upgraded to buy from neutral at BofA/Merrill.
• Abercrombie & Fitch (ANF) was upgraded to neutral from underperform at Cowen.
• Rowan Companies (RDC) was upgraded to sector perform from underperform at RBC Capital.

Tetra Tech Inc. (NASDAQ: TTEK) provides consulting, engineering, construction, and technical services for resource management and infrastructure in the United States and internationally.

Clearly, the company has a stake in the proposed rebuilding of infrastructure that serves as part of the foundation of the latest economic stimulus packages.

Beating the Street at the earnings game is all about knowing the market's true expectations for a stock.

Knowing the market's expectations -- not just the analyst expectations -- for a stock will often provide the edge necessary to turn earnings season into a profit opportunity.

The more data and trends you can look at to determine not only what investors expect, but also how investors are positioning themselves for the expected move, the better.

This post is part of a special annual report -- Top Stock Picks '09 -- in which TheStockAdvisors.com asked 75 leading newsletter advisors to select their favorite investment for the new year.

"As the government and corporations look to get more environmentally sound, they'll be turning to Tetra Tech (NASDAQ: TTEK), an environmental consulting company," suggests 'green technology' specialist Brendan Coffey.

The editor of The Cabot Green Investor explains, "Tetra Tech is the expert people turn to the figure out the nitty gritty of getting eco-projects done." Here's his review of the stock, which he selects as his favorite investment idea for the coming year.

"President-elect Obama looking to resuscitate the economy, wants to do two things at once: immediate stimulate job growth with an aid package of perhaps $700 billion while laying the groundwork for the country's long-term economy health.

"He's identified the core of that dual strategy as going green -- to wean us off oil, counteract the eventual dire effects of global warming and make the country the technological leader in alternative energy, creating five million or more jobs in the process.