Analyst Upgrades

• Philip Morris (PM) to conviction buy from buy at Goldman.
• Peet's Coffee (PEET) to neutral from sell at Janney Capital.
• Cephalon (CEPH) to equal weight from underweight at Morgan Stanley.
• StoneMor Partners (STON) to outperform from neutral at RW Baird.
• Tibco (TIBX) to buy from underperform at BofA/Merrill.
• Apollo Group (APOL) to outperform from market perform at BMO Capital.

Analyst Upgrades

• Micron (MU) to buy from neutral at UBS.
• Baker Hughes (BHI) to outperform from market perform at BMO Capital.
• PDL BioPharma (PDLI) to outperform from sector perform at RBC Capital.
• Fluor (FLR) and Rush Enterprises (RUSHA) to buy from neutral at BofA/Merrill.
• Camden Property (CPT) to outperform from neutral at Macquarie.
• Pinnacle Financial (PNFP) to buy from hold at Wunderlich.
• Linear Technology (LLTC) to neutral from reduce at Nomura.
• Hologic (HOLX) and Illumina (ILMN) to buy from hold at Citigroup.
• F5 Networks (FFIV) to buy from neutral at Gleacher.

Even before the phrase "cloud computing" became popular, Citrix Systems (CTXS) was a top player in the industry. Over the years, the company has developed sophisticated technologies to leverage the Internet to share applications and allow groups to collaborate.

After being stuck in a trading range for some time, this year the stock of Citrix got juiced up. A big help has certainly been the surge from the leader in cloud-computing, Salesforce.com (CRM).

The stock market was a roller-coaster today, and suddenly over the last week and a half we have gone from a market where volatility was very low to one where triple-digit DJIA point moves occur and get reversed in almost the same day. The VIX even opened right over 26.0 today before selling off. We started the day mixed, then went very positive, and then went very negative toward the end of the day. Earnings are still strong, but valuations are weighing on investors as you see many names selling off even after good earnings. The wide budget deficit only highlights more and more long-term concerns.

Here were the unofficial closing bell levels:

Dow 10,200.19 +3.33 (0.03%)
S&P 500 1,092.17 -4.61 (-0.42%)
Nasdaq 2,203.73 -7.07 (-0.32%)

Top Analyst Upgrades & Downgrades
Top Day Trader Alerts

MOST NOTEWORTHY: Today's noteworthy initiations were Monolithic Power, Emergency Medical Services, Amsurg and EnergySolutions.

• Monolithic Power (NASDAQ: MPWR) was initiated with a Buy at Am Tech, which predicted that Monolithic Power will have significant design win momentum that should result in stronger than expected revenue growth. The firm thinks the company will be able to grow 20% in its 2008, thanks to its new products and competitive prices.
  
• Emergency Medical Services (NYSE: EMS) was initiated with a Sell, target $15 at Citigroup. Citigroup believes EMS's earnings contribution from insurance releases and prior period adjustments is not sustainable.
  
• AMSurg (NASDAQ: AMSG) was initiated with a Buy, target $32 at Citigroup. Citigroup said it is positive on AMSurg given its history of FCF per share growth, low out of network exposure, little debt risk, and acquisition pipeline.
  
• EnergySolutions (NYSE: ES) was initiated with a Market Perform, target $26 at FBRC. Friedman Billings expects EnergySolutions to trade at a slight discount to peers given its leverage balance sheet and perceived slower growth.

OTHER INITIATION:

• VMWare (NYSE: VMW) initiated with a Market Weight at Thomas Weisel, based on valuation. Thomas Weisel believes VMWare is uniquely positioned to benefit from trends toward centralized IT resources, on-demand delivery and greater efficiency.
• Citrix Systems (NASDAQ: CTXS) was initiated with an Overweight, target $37 at Thomas Weisel. Thomas Weisel believes Citrix Systems is uniquely positioned to benefit from trends toward centralized IT resources and on-demand delivery given its product line that targets the data center.

Citrix Systems (NASDAQ: CTXS), a top enterprise software player, is striving to supercharged growth with the marvels of virtualization (a technology that gets more firepower from existing resources). Yet, with the slowing economy, things are proving kind of difficult.

This week Citrix announced its Q1 results. Revenues increased 22% to $377 million and net income came to $34.4 million, up 8.5%. Yes, when trying to conquer new technology frontiers, there's a need to ramp expenses (especially for marketing and R&D).

Citrix has an expanding global footprint, which has muted the downturn in the US. Also, the company has a nice assortment of products, such as its GoToMeeting franchise (which is one of the top on-demand offerings in the marketplace).

Still, Citrix is betting heavily on its virtualization technology, which is part of last year's acquisition of XenSource. Indeed, traction, such as with distribution deals with Dell (NASDAQ: DELL) and HP (NYSE: HPQ) is evident. Citrix was also able to expand its alliance with Microsoft (NASDAQ: MSFT).

But there is still much to prove to the Street. After all, the marquee virtualization player, VMWare (NYSE: VMW), had a particularly strong Q1.

Tom Taulli is the author of various books, including The Complete M&A Handbook and The Edgar Online Guide to Decoding Financial Statements. He also operates MergerBook.com.

MOST NOTEWORTHY: The Managed Care sector, Keryx Biopharma and Citrix Systems were today's noteworthy downgrades:

• Goldman downgraded the Managed Care sector to Neutral from Attractive following WellPoint's (NYSE: WLP) reduced 2008 outlook. The firm said WellPoint's issues reflect a company specific underwriting error but also industry-wide pricing pressures which increase the risk of a cyclical slowdown in managed care. WellPoint was also downgraded to Neutral from Overweight at JP Morgan.
  
• Banc of America cut Keryx Biopharma (NASDAQ: KERX) to Neutral from Buy and lowered their target to $1.00 after Sulonex failed to meet its primary endpoint.
  
• Jefferies downgraded shares of Citrix Systems (NASDAQ: CTXS) to Hold from Buy, as they believe the first half of 2008 will be a tough year for software and are increasingly worried about the macro environment.

OTHER DOWNGRADES:

• Level 3 Comm (NASDAQ: LVLT) was downgraded to Underweight from Market Weight at Thomas Weisel.
  
• Texas Instruments (NYSE: TXN) was lowered to Neutral from Buy at Piper Jaffray.
  
• Credit Suisse removed Bunge Limited (NYSE: BG) from its U.S. Focus List.

MOST NOTEWORTHY: Suntech Power, Premier Exhibitions and the Homebuilders Sector were today's noteworthy initiations:

• Citigroup named Suntech Power Holding (NYSE: STP) their top pick for China solar due to its leading scale and technology roadmap for higher cell efficiency, initiating shares with a Buy rating and $55 target.
  
• Merriman believes Premier Exhibitions (NASDAQ: PRXI) can move to the $14.50-$17.00 through the continued monetization of the company's current tours, the launching of additional tours and the value of the Titanic artifacts on hand. The firm started shares with a Buy rating.
  
• Lehman initiated D.R. Horton (NYSE: DHI), Ryland Group (NYSE: RYL), Toll Brothers (NYSE: TOL) with Overweight ratings and an $18 target, $31 target and $27 target; KB Home (NYSE: KBH) with an Equal Weight rating and $24 target; and Hovnanian Enterprises (NYSE: HOV) with an Underweight rating and $8 target.

OTHER INITIATIONS:

• Citigroup initiated Yingli Green Energy (NYSE: YGE) with a Hold rating and $24 target.
  
• UBS initiated Citrix Systems (NASDAQ: CTXS) with a Neutral rating and $38 target.
  
• JP Morgan initiated Biodel (NASDAQ: BIOD) with an Overweight rating.

Virtualization is certainly a killer technology (essentially allowing for better utilization of software, servers, data centers and so on). It's also a big money maker, as seen with the performance of VMware (NYSE: VMW).

But Citrix is also ramping up on virtualization. It helps that the company has a robust technology platform. Hey, just look at the company's Q4 results. Revenues increased 25% to $399.6 million and profits went from $52.9 million, or $0.29 per share to $62.8 million, or $0.33 per share. License revenues increased a healthy 24% to $178 million.

There was strength across the board, such as with its Presentation Server (there were six deals with price tags over $1 million) and the online services division, which saw a 37% increase in revenues over the past year to $59 million.

But the big bet is on XenSource, a cutting-edge provider of virtualization technologies (Citrix recently purchased the company). It's still in the early stages but it looks like the growth may be explosive. For example, Citrix has key deals with Dell (NASDAQ: DELL), Hewlett-Packard (NYSE: HPQ) and Microsoft (NASDAQ: MSFT). The goal is to get to $50 million in revenues for 2008. And, keep in mind that – according to a study from ITC – the market for virtualization software and services is expected to reach $15 billion by 2011.

So far, investors seem to be excited. In today's trading, Citrix's shares increased 7.16% to $34.29.

Tom Taulli is the author of various books, including The Complete M&A Handbook and The Edgar Online Guide to Decoding Financial Statements. He also operates DealProfiles.com.

MOST NOTEWORTHY: Vodafone, Citrix Systems, STMicroelectronics, Symmetricom and Smith International were today's noteworthy upgrades:

• JP Morgan upgraded shares of Vodafone Group (NYSE: VOD) to Overweight from Neutral, as they believe the company is benefiting from increased data sales.
  
• Citrix Systems (NASDAQ: CTXS) was upgraded to Outperform from Market Perform at Friedman Billings. The firm's checks indicate that its clear communication strategy and a stronger technology platform behind the Enterprise and Platinum editions is spurring top line growth.
  
• Baird upgraded shares of STMicroelectronics (NYSE: STM) to Outperform from Neutral based on new product cycle, multiple design wins, valuation, and strong Q4 guidance.
  
• Cantor upgraded shares of Symmetricom (NASDAQ: SYMM) to Buy from Hold as they find the valuation compelling and are comfortable with Q1 estimates.
  
• Calyon Securities upgraded Smith International (NYSE: SII) to Add from Neutral following its Q3 report and guidance.

OTHER UPGRADES:

• Shaw Group (NYSE: SGR) was upgraded to Neutral from Sell at Goldman Sachs.
  
• RBC Capital upgraded QLogic Corporation (NASDAQ: QLGC) to Outperform from Sector Perform.
  
• Credit Suisse upgraded Amgen (NASDAQ: AMGN) and Weatherford (NYSE: WFT) to Outperform from Neutral.

MOST NOTEWORTHY: Clearwire, Citrix Systems, Altria Group, Overstock.com and Interpublic Group were today's noteworthy upgrades:

• Jefferies upgraded shares of Clearwire Corporation (NASDAQ: CLWR) to Buy from Hold on valuation as they believe the stock is trading as if the Sprint Nextel Corporation (NYSE: S) deal is off. Jefferies thinks the Sprint/Clearwire deal is still in the best interest of both companies.
  
• Deutsche Bank upgraded shares of Citrix Systems (NASDAQ: CTXS) to Buy from Hold, as they believe the contribution from XenSource beginning in Q4 could be better than expected.
  
• UBS upgraded shares of Altria Group (NYSE: MO) citing stronger Q3 International results and potential share repurchases. Shares were upgraded to Buy from Neutral.
  
• Piper Jaffray raised shares of Overstock.com (NASDAQ: OSTK) to Market Perform from Underperform, as they are incrementally more positive on shares following the company's Q3 upside. They believe the company has turned the corner on profitability.
  
• Bear Stearns upgraded shares of Interpublic Group (NYSE: IPG) to Outperform from Peer Perform on valuation and expectations for improved performance in 2008.

OTHER UPGRADES:

• Morgan Stanley upgraded Walgreen (NYSE: WAG) to Overweight from Equal Weight.
  
• Friedman Billings raised its rating on IMS Health (NYSE: RX) to Outperform from Market Perform.
  
• JP Morgan upgraded Stericycle (NASDAQ: SRCL) to Overweight from Neutral.
  
• Citigroup upgraded Xerox Corporation (NYSE: XRX) to Hold from Sell.
  
• RadiSys Corporation (NASDAQ: RSYS) was upgraded to Buy from Hold at Cantor.

MOST NOTEWORTHY: Viacom, Agilent, AudioCodes and Microsoft were today's noteworthy upgrades:

• JP Morgan upgraded shares of Viacom (NYSE: VIA) to Overweight from Neutral as they believe contractual rate increases and distribution of the company's newer networks will drive higher earnings growth in 2008. The firm does not believe this growth is priced into shares.
  
• JP Morgan also upgraded Agilent Technologies (NYSE: A) to Overweight from Neutral and added shares to its Focus List. Shares were upgraded based on its sum-of-the-parts valuation and sees further upside given that strategic buyers are back in the marketplace.
  
• AudioCodes (NASDAQ: AUDC) was raised to Buy from Accumulate at Think Equities, as they expect the company to benefit from the newly acquired CTI squared business, the security gateway business, and traction in the SBC business, with Microsoft's OCS launch of a new driver today.
  
• Goldman added Microsoft Corporation (NASDAQ: MSFT) to its Conviction Buy List, citing valuation and overwhelmingly negative sentiment, and expects shares to trade higher on a better Q1 report.

OTHER UPGRADES:

• RBC Capital Markets upgraded Citrix Systems (NASDAQ: CTXS) to Outperform from Sector Perform.
  
• Eaton Corporation (NYSE: ETN) was upgraded to Outperform from Market Perform at Friedman Billings.
  
• Citigroup upgraded Broadcom Corporation (NASDAQ: BRCM) to Buy from Hold.

MOST NOTEWORTHY: Southwest Airlines, AMR Corp, ConocoPhillips, Comcast and Time Warner Cable were today's noteworthy downgrades:

• Citigroup downgraded shares on both Southwest Airlines (NYSE: LUV) and AMR Corp (NYSE: AMR) to Hold from Buy to reflect elevated risks from continued high fuel prices and relative valuations.
  
• Deutsche Bank lowered shares of ConocoPhillips (NYSE: COP) to Sell from Hold on valuation noting that 13 out of the past 15 years, integrated oils have underperformed during the period October 1st to December 5th. They also believe the company's 3rd October trading statement could raise concerns over Q4. on valuation noting that 13 out of the past 15 years, integrated oils have underperformed during the period October 1st to December 5th. They also believe the company's 3rd October trading statement could raise concerns over Q4.
  
• Soleil downgraded shares of Comcast Corporation (NASDAQ: CMCSA) and Time Warner Cable (NYSE: TWC) to Hold from Buy due to concerns about the company's prospects in a weakening economy.

OTHER DOWNGRADES:

• RBC Capital downgraded Research in Motion Limited (NASDAQ: RIMM) to Outperform from Top Pick.
  
• Citrix Systems (NASDAQ: CTXS) was downgraded to Neutral from Buy at Banc of America.
  
• Deutsche Bank lowered shares of VistaCare (NASDAQ: VSTA) to Sell from Hold and Publicis (PUB) to Hold from Buy.
  
• Thomas Weisel downgraded SunPower Corporation (NASDAQ: SPWR) to Market Weight from Overweight.

With a market cap of $20+ billion, VMware (NYSE: VMW) has certainly caught the attention of the software world. The company is the dominant player in virtualization, which is a "must have" for a growing number of organizations. Basically, it allows much improved utilization -- and cost savings -- from servers.

Well, Citrix (NASDAQ: CTXS) is one of the first to make a bigger splash into the virtualization space. That is, yesterday the company announced that it will shell out a cool $500 million for XenSource.

No doubt, it was smart for the folks at XenSource to wait for the Vmware debut. I'm sure it added some points to the valuation. In fact, it looks like XenSource is posting about $3 million in revenues this year -- but that should be ramped quickly with Citrix's distribution platform.

XenSource is building sophisticated tools for Microsoft's (NASDAQ: MSFT) push into virtualization, which is supposed to hit the markets in late 2008 (but Mr. Softie always seems to miss release dates).

Keep in mind that Citrix has built a growing, profitable business by pigging-backing on Microsoft systems (and has had an extensive relationship with the software powerhouse for more than ten years).

In other words, it's still early in the game. But with billions and billions at stake, it looks like Citrix will make virtualization a critical priority -- and we'll likely see more and more competition for VMware.

Tom Taulli is the author of various books, including the Complete M&A Handbook and the EDGAR-Online Guide to Decoding Financial Statements.

MOST NOTEWORTHY: St. Jude Medical (STJ), Juniper Networks (JNPR), Satyam Computer (SAY), Clearwire (CLWR) and Citrix Systems (CTXS) were today's noteworthy upgrades:

• St. Jude Medical's (NYSE: STJ) upgrade to Outperform from Market Perform at Wachovia was based on signs of an ICD recovery and reasonable valuation.

• Baird upgraded shares of Juniper (NASDAQ: JNPR) to Outperform from Neutral following better-than-expected guidance; Goldman upgraded Juniper to Buy from Neutral.

• Satyam (NYSE: SAY) was upgraded to Positive from Neutral at Susquehanna citing better than expected growth.

• Clearwire (NASDAQ: CLWR) was upgraded to Outperform from Peer Perform at Bear Stearns following the announcement that Sprint (S) and Clearwire will form a Nationwide 4G/Wimax Network.

• Citrix (NASDAQ: CTXS) was upgraded at Jefferies to Buy from Hold as they believe the strong customer response to Presentation Server Platinum Edition and the pipeline buildup related to NetScaler 8.0 bode well for the second half of 2007...

OTHER UPGRADES:

• Lehman raised DSW Inc (NYSE: DSW) to Overweight from Equal-Weight.

• Goldman upgraded shares of Labor Ready (NYSE: LRW) to Neutral from Sell.

• Rodman upgraded shares of Encysive Pharma (NASDAQ: ENCY) to Market Perform from Underperform.

• Lazard upgraded Cubist Pharmaceuticals (NASDAQ: CBST) to Neutral from Sell.

• Selective Insurance (NASDAQ: SIGI) was upgraded at Fox Pitt to In Line from Underperform.

• Raymond James upgraded Pfizer (NYSE: PFE) to Strong Buy from Market Perform.

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