Analyst upgrades:

• Kaufman Bros. upgraded Computer Sciences (NYSE: CSC) and Cognizant (NASDAQ: CTSH) to Buy from Hold on better demand trends as it believes overall enterprise IT spending is turning more positive. The firm raised its target on Computer Sciences to $62 from $54 and on Cognizant to $45 from $42.
• Citigroup upgraded E-Trade (NASDAQ: ETFC) to Buy from Hold as it believes loan less trends have improved and the company could potentially be acquired. Citi raised its target on shares to $2.30 from $1.50.
• Auriga upgraded Microsoft (NASDAQ: MSFT) to Buy from Hold as it believes consensus expectations for 2010 are too low, but admits the company's Q1 results could be fairly weak. Auriga believes Microsoft is coming up to its "most powerful product cycle in many years" and raised its price target on shares to $30 from $24.
• Motorola (NYSE: MOT) was upgraded to Buy from Neutral at UBS.
• Fidelity Southern (NASDAQ: LION) was upgraded to Neutral from Reduce at SunTrust.
• Sonoco Products (NYSE: SON) was upgraded to Buy from Neutral at BofA/Merrill.

Here are some highlights from this past week's earnings coverage from BloggingStocks:

• American Axle & Manufacturing Holdings Inc. (NYSE: AXL) reported a strike-related Q1 loss.
• Arch Coal Inc. (NYSE: ACI) Q1 profit tripled on increased demand and higher prices.
• Boeing Co. (NYSE: BA) posted better-than-expected earnings despite Dreamliner delays.
• Coach Inc. (NYSE: COH) better-than-expected quarter didn't impress Jim Cramer.
• ConocoPhillips (NYSE: COP) reported Q1 earnings and revenue above analysts' forecasts.
• Delta Air Lines Inc. (NYSE: DAL) reported a big loss on a one-time charge and fuel costs.
• Dow Chemical Co. (NYSE: DOW) posted a smaller-than-forecast profit drop and predicted a good Q2.
• EI DuPont de Nemours & Co. (NYSE: DD) Q1 earnings rose 26% but missed expectations.
• Ford Motor Co. (NYSE: F) surprised Wall Street by swinging to a profit in the first quarter.
• Goodyear Tire and Rubber Co. (NYSE: GT) easily surpassed analyst estimates for the first quarter.
• Halliburton Co. (NYSE: HAL) Q1 earnings and revenue rose due to international growth.
• Hershey Co. (NYSE: HSY) profit fell but was in line with analysts' expectations.

MOST NOTEWORTHY: Merrill Lynch & Co (MER), Kraft Foods Inc (KFT) and US Steel Corp (X) were today's noteworthy upgrades:

• Goldman Sachs upgraded Merrill Lynch & Co (NYSE: MER) to Buy from Neutral with a $107 target, believing the sell-off in Merrill shares is overdone.

• JP Morgan added Kraft Foods Inc (NYSE: KFT) to its Focus List with a $40 target, believing valuation reflects the overhang from Altria Group's (MO) share distribution.

• Prudential upgraded shares of US Steel Corp (NYSE: X) to Neutral from Underweight citing synergies from the Lone Star acquisition and the increase in scrap prices.

OTHER UPGRADES:

• Jefferies upgraded shares of Cephalon, Inc (NASDAQ: CEPH) to Buy from Hold and raised its target to $88 from $69 to reflect a favorable risk/reward profile and the imminent approval of Nuvigil following FDA approval of draft labeling for the drug.

• Bank of America upgraded Sonoco Products Co (NYSE: SON) to Buy from Neutral with a $44 target.

• Baird upgraded Micron Technology, Inc (NYSE: MU) to Outperform from Neutral.

• Credit Suisse upgraded PG&E Corp (NYSE: PCG) to Outperform from Neutral with a $53 target citing valuation.

• Matrix USA upgraded TJX Cos (NYSE: TJX) to Buy from Hold on relative valuation.

• William Blair upgraded Blue Nile, Inc (NASDAQ: NILE) to Outperform from Market Perform citing near-term fundamentals, improved long-term cash flow, long-term growth potential and downside protection.

• Kaufman Bros upgraded Avid Technology, Inc (NASDAQ: AVID) to Buy from Hold with a $40 target.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).