Analyst upgrades:

• Jefferies upgraded shares of SourceFire (NASDAQ:FIRE) to Buy from Hold as they believe the company is benefiting from recent spending by the U.S. Federal government and private enterprises to improve cybersecurity. The firm raised their price target on the stock to $11 from $7.
  
• Piper Jaffray upgraded Brocade (NASADAQ:BRCD) to Buy from Neutral as they believe an expanded OEM announcement with IBM (NYSE:IBM) could be announced as early as the end of April, creating a positive catalyst. The firm raised their price target on the stock to $6 from $4.
  
• UBS upgraded Salesforce.com (NYSE:CRM) to Buy from Sell but lowered their target to $4 from $21 citing reduced churn and cashflow concerns, expectations for FY10 to be a trough year, and a potential reacceleration in deferred growth.
• AK Steel (NYSE:AKS) was raised to Buy from Neutral at Goldman.
  
• Strattec (NASDAQ:STRT) was raised to Neutral from Underperform at Baird.
  
• Lululemon (NASDAQ:LULU) was upgraded at William Blair to Outperform from Market Perform.

Analyst upgrades:

• Citigroup upgraded Blue Nile (NASDAQ: NILE) shares to Buy from Hold on valuation following the recent sell-off as they believe weakening fundamentals have been factored into estimates and that Blue Nile should benefit from the recent softening of diamond prices. The firm raised its target price to $30 from $20.
  
• Baird upgraded AmSurg (NASDAQ: AMSG) to Outperform from Neutral based on valuation, potential upside from in-line results, good visibility, and FCF yield.
  
• Oppenheimer upgraded DryShips (NASDAQ: DRYS) to Perform from Underperform on valuation following the recent weakness and believes the company is at least halfway through its $500M equity offering.
• UAL Corp (NASDAQ: UAUA) was raised to Buy from Neutral at Banc of America/Merrill.
  
• Mylan (NASDAQ: MYL) was upgraded to Overweight from Equal Weight at Barclays.
  
• Exxon Mobil (NYSE: XOM) was lifted at Deutsche Bank to Buy from Hold.

MOST NOTEWORTHY: Analog Semiconductors, Hill International and Varian Semi were today's noteworthy upgrades:

• Lehman upgraded Analog Devices (NYSE: ADI), Fairchild Semi (NYSE: FCS), and Intersil Corp (NASDAQ: ISIL) to Overweight from Equal Weight. The firm believes Analog semis have one of the most attractive risk/reward profiles in technology and expects the group to outperform in 2008.
  
• B. Riley raised Hill International (NYSE: HIL) to Buy from Neutral following the company's Q4 results which they believe continued to reflect strong growth across both segments of the business.
  
• ThinkEquity upgraded Varian Semi (NASDAQ: VSEA) to Accumulate from Source of Funds citing valuation and expectations that the company will end up with over 70% of the overall implant market past 2008. The firm adds that scale and pricing power should drive upside to margins.

OTHER UPGRADES:

• Collective Brands (NYSE: PSS) was raised to Buy from Hold at Soleil.
• JP Morgan upgraded Rockwell Collins (NYSE: COL) to Overweight from Neutral.
  
• UBS upgraded Cigna (NYSE: CI) to Buy from Neutral.

MOST NOTEWORTHY: Polaris Industries, Edwards Lifesciences, BearingPoint and Fortis were today's noteworthy upgrades:

• Rochdale upgraded Polaris Industries (NYSE: PII) to Buy from Hold, as they have increased confidence in the company's ability to achieve estimates.
  
• Piper upgraded shares of Edwards Lifesciences (NYSE: EW) as they believe the bad news is behind the company with a U.S. turnaround expected in 2008.
  
• Jefferies raised shares of BearingPoint (NYSE: BE) to Hold from Underperform on valuation as they believe the risk/reward is neutral following the recent pullback.
  
• Fortis (OTC: FORSY) was upgraded to Outperform from Peer Perform at Bear Stearns. The firm upgraded shares on valuation as they believe the recent weakness is overdone.

OTHER UPGRADES:

• Goldman Sachs added Research in Motion Limited (NASDAQ: RIMM) and Commercial Metals (NYSE: CMC) to its Conviction Buy List.
• Credit Suisse upgraded Varian Semiconductor (NASDAQ: VSEA) to Outperform from Neutral.
  
• Bear upgraded Bruker Biosciences (NASDAQ: BRKR) and Hutchison Telecom (NYSE: HTX) to Outperform from Peer Perform.
  
• Banc of America upgraded Werner Enterprises (NASDAQ: WERN) and J.B. Hunt (NASDAQ: JBHT) to Neutral from Sell.

"The August lows now represent important technical levels defining the U.S. markets' primary uptrend," notes Michael Ashbaugh. The editor of The Marketwatch Technical Indicator explains, "Specifically, the S&P 500's August low holds at 1,427 while the Nasdaq's August low holds at 2,492. In addition, the Dow's August low holds at 13,134.

Ashbaugh continues, "For the Nasdaq and the S&P, a break below those levels would mark a failed test of support, also placing each index under its 200-day moving average. And if the breakdown were decisive, the primary trend would likely turn lower.

Yet "as ugly" as the current backdrop looks, he contends, from a strictly technical standpoint, the primary uptrend still has the benefit of the doubt.

Meanwhile, he suggests, we continue to find some names that are well positioned technically. These, he says, are intended as radar screen names - sectors or stocks positioned to move near term. In this light, the technician sees ongoing strength among chip-equipment names.

Ashbaugh says, "Each of these names broke out decisively in mid-July. Since then, Lam Research (NASDAQ: LRCX), ASML Holding (NASDAQ: ASML) and KLA-Tencor (NASDAQ: KLAC) have pulled in, establishing support around the breakout point. Further, he adds, Applied Materials (NASDAQ: AMAT) and Varian Semiconductor (NASDAQ: VSEA) are the group's strongest names, knifing even higher after the initial breakout, despite a down market."

Each day, Steven Halpern's TheStockAdvisors.com features the latest investment ideas and market commentary from the financial newsletter community.

Society's ballooning appetite for devices controlled by semiconductor-integrated circuits emphasizes the need for high-quality chip processing equipment. One of the world's best known makers of such equipment is headquartered in Gloucester, Massachusetts.

Varian Semiconductor Equipment Associates (NASDAQ: VSEA) is engaged in the design, manufacture, marketing, and servicing of semiconductor processing equipment used in the fabrication of integrated circuits. The firm is the world's top manufacturer of ion implantation systems, which are used to build the transistors that are the basis of integrated circuits. The company also offers consumables, product upgrades, services, spare parts, and support. Varian Semiconductor has sold systems to each of the twenty largest chip makers in the world and has won first place on the prestigious VLSI Research 10 BEST list, in eight of the last nine years. Applied Materials (NASDAQ: AMAT) is a major competitor.

MOST NOTEWORTHY: SanDisk (SNDK), JetBlue (JBLU), and the Semiconductor Equipment Sector filled out today's notable downgrades:

• Baird downgraded SanDisk Corp. (NASDAQ:SNDK) to Neutral from Outperform with a $43 target, citing the company's reduced gross margin outlook.
• Morgan Stanley downgraded JetBlue Airways Corp. (NASDAQ:JBLU) to Equal Weight from Overweight.
• The Semiconductor Equipment sector was downgraded to Market Weight from Overweight at Credit Suisse, citing first quarter memory chip margins that are lower for the first time in three years.
• Credit Suisse also downgraded Lam Research Corp (NASDAQ:LRCX) to Neutral from Outperform, citing negative catalysts ahead, despite the cheap valuation, and Varian Semiconductor Equipment Associates, Inc. (NASDAQ:VSEA) to Underperform from Neutral, citing valuation.

OTHER DOWNGRADES:

• Soleil Securities downgraded AK Steel Holding Corp. (NYSE:AKS) to Sell from Hold on valuation.
  
• Merriman cut the Nautilus, Inc (NYSE:NLS) to Sell from Neutral. They believe shifts in spending patterns to "big box" retailers are hurting direct channel results. The firm also believes Nautilus lacks near-term catalysts.
• Citigroup downgraded Volkswagen (OTC:VLKAY) to Sell from Hold.
• Matrix USA downgraded Kulicke & Soffa Industries, Inc. (NASDAQ:KLIC) to Strong Sell from Strong Buy, citing decreasing revenues and growing valuation.
• Wedbush downgraded LeapFrog Enterprises, Inc. (NYSE:LF) to Sell from Hold and expects a better entry point in the future.
• RBC cut Abercrombie & Fitch Co. (NYSE:ANF) to Sector Perform from Outperform citing the lack of near-term catalysts.

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

MAJOR PAPERS:

• The Wall Street Journal (subscription required) highlighted the possibility of a merger between XM Satellite Radio (NASDAQ: XMSR) and Sirius Satellite Radio (NASDAQ: SIRI).
• XM Satellite Radio has softened its stance about a possible deal with Sirius Satellite Radio, but any deal between the companies would face obstacles from the FCC.
• Starbucks Corp (NASDAQ: SBUX) rival Dunkin' Donuts plans to open its first store in Taiwan today as part of a regional push into mainland China. Starbucks also has expansion plans for China.
• Commerce Bancorp (NYSE: CBH) is under federal investigation by the Office of the Comptroller of the Currency, in conjunction with the Federal Reserve, due to the company's transactions with bank insiders.
  
• The Financial Times (subscription required) wrote that handset maker Sony Ericsson (NYSE: SNE, NASDAQ: ERIC) moved closed to pushing aside Samsung for third place in market share behind Nokia Corp (NYSE: NOK) and Motorola, Inc (NYSE: MOT); last year it overtook LG Electronics.
  

OTHER PAPERS:

• The New York Times reported that the Chief Independent Investigator has found that a top Interior Department official was told nearly three years ago of a "legal blunder" that allowed drilling companies to avoid billions of dollars in payments for oil and gas pumped from publicly owned waters.
• The Toronto Sun reported rumors that Apple Inc (NASDAQ: AAPL) is working to get the Beatles catalog onto its iTunes service.
  
• Investor's Business Daily mentioned Varian Semiconductor (NASDAQ: VSEA) positively in the "New America" column.