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.

"Each week, we assess the market's strongest stocks and highlight ten that appear to offer the best prospects," explains Mike Cintolo.

The editor of Cabot Top Ten adds, "Below, we offer our fundamental and technical analysis of three technology stocks that meet this criteria: F5 (FFIV), a player in cloud computing; NetApp (NTAP), a leader in networked data storage; and SanDisk (SNDK), the global leader of the solid state flash memory industry.

MOST NOTEWORTHY: MoneyGram (MGI), F5 Networks (FFIV), ARK Restaurants (ARKR), Nara Bancorp (NARA) and St. Jude Medical (STJ) were today's noteworthy initiations:

• AG Edwards initiated MoneyGram (NYSE: MGI) with a Buy rating because it believes the recent pullback in the shares provides an attractive entry point; Stephens started shares of MoneyGram with an Overweight rating, and believes the company is well positioned to create strong transactional growth and take market share.

• CIBC expects F5 Networks (NASDAQ: FFIV) to benefit from strong fundamentals in application networking solutions and started shares with a Sector Outperformer rating and $85 target.

• Morgan Joseph initiated ARK Restaurants (NASDAQ: ARKR) with a Buy rating and $43 target; they believe ARK is well positioned to benefit from strong SSS & earnings leverage given its strong store locations, wide ranging price points, and stable unit development pipeline.

• Sandler is positive on Nara Bancorp (NASDAQ: NARA), starting shares with a Buy rating and $17 target, based on the company's long-term prospects.

• ThinkEquity believes St. Jude Medical (NYSE: STJ) is poised to take market share in the ICD markets and started shares with a Buy rating and $56 target...

OTHER INITIATIONS:

• JP Morgan initiated Softbank (OTC: SFTBF) with an Underweight rating and Nippon Telegraph & Telephone (NYSE: NTT) with a Neutral rating.

• Goldman reinstated Bausch & Lomb (NYSE: BOL) with a Neutral rating.

• Banc of America initiated PharMerica (NYSE: PMC) with a Buy rating and $18 target.

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

MOST NOTEWORTHY: Mattel (MAT), UnitedHealth (UNH), Alcoa (AA), 1-800-Flowers.com (FLWS) and Marathon Oil (MRO) were today's noteworthy upgrades:

• Piper upgraded shares of Mattel (NYSE: MAT) to Outperform from Peer Perform on valuation and improving fundamentals and notes that product recalls have historically not had a lasting impact on sales.

• Goldman upgraded UnitedHealth (NYSE: UNH) to Neutral from Sell on valuation and expectations for improved profitability in 2H07.

• Alcoa (NYSE: AA) was upgraded to Outperform from Market Perform at Friedman Billings on valuation and expectations for a favorable report next week.

• JMP Securities has increased confidence in 1-800-Flowers.com's (NASDAQ: FLWS) management initiatives to drive leverage and operating margins following the Q4 report, upgrading shares to Outperform from Market Perform.

• Lehman upgraded shares of Marathon Oil (NYSE: MRO) to Overweight from Equal-Weight on valuation and expectations for strong oil and gas production growth...

OTHER UPGRADES:

• NBTY Inc (NYSE: NTY) was upgraded to Neutral from Underperform at JP Morgan.

• ThinkEquity upgraded F5 Networks (NASDAQ: FFIV) to Buy from Accumulate.

• Goldman upgraded the oil services sector to Attractive from Neutral based on the recent pullback; Sunoco (NYSE: SUN) and Hess (NYSE: HES) were also upgraded to Buy from Neutral.

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

MOST NOTEWORTHY: Luminent Mortgage (LUM), JetBlue (JBLU), Thornburg Morgtage (TMA) and Harmony Gold (HMY) were today's noteworthy downgrades:

• Luminent Mortgage (NYSE: LUM) was downgraded by a host of firms following suspension of its dividend and 10Q filing delay:
  
• UBS cut shares to Sell from Neutral.
  
• Deutsche Bank downgraded Luminent to Sell from Buy.
  
• Friedman Billings and JMP Securities downgraded shares to Underperform from Market Perform. Keefe Bruyette downgraded Luminent to Market Perform from Outperform.

• Morgan Stanley downgraded JetBlue (NASDAQ: JBLU) to Underweight from Equal Weight based on expected competition from Virgin American and their stretched balance sheet.

• Deutsche Bank downgraded shares of Thornburg Mortgage (NYSE: TMA) to Sell from Hold telling accounts it does not believe REIT taxable earnings will be able to support the dividend.

• Deutsche Bank and UBS cut shares of Harmony Gold (NYSE: HMY) to Sell from Neutral after the company lowered its earnings forecast and the CEO resigned...

OTHER DOWNGRADES:

• Thomas Weisel downgraded F5 Networks (NASDAQ: FFIV) to Market Weight from Overweight.

• AG Edwards cut Nuveen Investments (NYSE: JNC) to Sell from Hold.

• Pali Capital downgraded Clearwire (NASDAQ: CLWR) to Neutral from Buy.

• Matrix USA downgraded PPG Industries (NYSE: PPG) to Buy from Strong Buy.

• Wachovia cut U-Store It Trust (NYSE: YSI) to Underperform from Market Perform.

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

MOST NOTEWORTHY: Alcoa (AA), Rigel Pharma (RIGL), Isis Pharma (ISIS), Cytokinetics (CYTK) and F5 Networks (FFIV) were today's noteworthy initiations:

• RBC believes shares are expensive, but feels Alcoa (NYSE: AA) has put itself in play and a bid for the company is possible. The firm resumed coverage with a Sector Perform rating and a $51 target.

• Credit Suisse initiated Rigel Pharmaceuticals (NASDAQ: RIGL) with an Outperform rating, believing R788 in ITP alone justifies current value, while RA and pipeline provide potential upside.

• Isis Pharmaceuticals (NASDAQ: ISIS) was initiated with a Buy rating and $17 target at Jefferies; the firm believes Isis's pipeline holds promise and appears under appreciated at the current valuation.

• Credit Suisse is positive on Cytokinetics (NASDAQ: CYTK) congestive heart failure candidate CK-453 and views the market as undeserved, starting shares with an Outperform rating and $15 target.

• Unterberg initiated shares of F5 Networks (NASDAQ: FFIV) with a Market Perform based on valuation...

OTHER INITIATIONS:

• Credit Suisse initiated Mobile Mini (NASDAQ: MINI) with a Neutral rating.

• Art Technology (NASDAQ: ARTG) was initiated with a Buy rating at Pacific Growth.

• Banc of America started Grant Prideco (NYSE: GRP) share with a Buy rating and $67 target.

• Morgan Joseph initiated Harris Stratex Networks (NASDAQ: HSTX) with a Buy rating.

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

MOST NOTEWORTHY: The Mosaic Company (MOS), LivePerson (LPSN) and three U.S. refiners were today's noteworthy downgrades:

• Goldman cut The Mosaic Company (NYSE: MOS) to Neutral from Buy on valuation.

• Stephens downgraded shares of LivePerson Inc (NASDAQ: LPSN) to EqualWeight from Overweight citing execution risk associated with the Kasamba.com acquisition.

• Citigroup cut shares of Sunoco Inc (NYSE: SUN) to Hold from Buy and Tesoro Corp (NYSE: TSO) and Valero Energy Corp (NYSE: VLO) to Sell from Hold based on valuation...

OTHER DOWNGRADES:

• Bear Stearns cut Ventana Medical Systems (NASDAQ: VMSI) to Peer Perform from Outperform.

• Baird downgraded F5 Networks (NASDAQ: FFIV) to Neutral from Outperform.

• Nuvelo Inc (NASDAQ: NUVO) was cut to Market Perform from Outperform at William Blair.

• Keefe Bruyette downgraded shares of Cowen Group (NASDAQ: COWN) to Market Perform from Outperform.

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

MOST NOTEWORTHY: CKE Restaurants (CKR), Cardinal Health (CAH), eBay (EBAY) and CA Inc (CA) topped today's noteworthy initiation list today:

• Nollenberger believes the Hardee's franchise is entering a period of accelerated growth and initiated shares of CKE Restaurants (NYSE: CKR) with a Buy rating and $27 target.

• Goldman views Cardinal Health (NYSE: CAH) as a as a high quality, focused franchise with strong fundamental outlook driven by margin expansion and improvements in non-drug wholesale businesses and restructuring efforts, reinstating its Buy rating on the company.

• American Technology initiated eBAY Inc (NASDAQ: EBAY) with a Buy rating and $43 target, believing the company is the top play on growth of U.S. e-commerce and they expect upside to numbers tonight.

• Needham believes CA Inc (NYSE: CA) Inc remains in transition as it continues to work on the repackaging of its vast product array into five solution sets and started the company with a Hold rating.

OTHER INITIATIONS:

• Lazard initiated F5 Networks Inc (NASDAQ: FFIV) with a Buy rating and $100 target.

• Citigroup started Clearwire Corp (NASDAQ: CLWR) with a Hold rating and $23 target.

• Morgan Stanley assumed coverage of Vornado RealtyTrust (NYSE: VNO) with an Equal Weight rating.

• SourceFire Inc (NASDAQ: FIRE) was initiated with a Hold rating and $12 target.

• The Wet Seal (NASDAQ: WTSLA) was initiated with an Outperform rating at Cowen.

• Roth Capital initiated shares of Vivus Inc (NASDAQ: VVUS) with a Buy rating and $15 target.

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

MOST NOTEWORTHY: Tribune Co (TRB), Quiksilver, Inc (ZQK), F5 Networks, Inc (FFIV) and Johnson & Johnson (JNJ) were some of today's noteworthy upgrades:

• Prudential upgraded Tribune Co (NYSE: TRB) to Neutral from Underweight based on the company's decision to go private.

• Quicksilver Inc (NYSE: ZQK) was upgraded to Overweight from Equal-Weight with a $17 target at Morgan Stanley.

• F5 Networks Inc (NASDAQ: FFIV) was upgraded to Buy from Hold at Kaufman Brothers.

• Raymond James upgraded Johnson & Johnson (NYSE: JNJ) to Strong Buy from Market Perform.

OTHER UPGRADES:

• Keefe, Bruyette added Morgan Stanley (NYSE: MS) and Merrill Lynch & Co (NYSE: MER) to KBW's Best Ideas List.

• Jefferies upgraded Kinetic Concepts, Inc (NYSE: KCI) to Buy from Hold with a $60 target as the firm believes the final competitive bidding ruling on durable medical equipment eliminates the single greatest overhang on the stock.

• Wachovia upgraded Amerigroup Corp (NYSE: AGP) to Outperform from Market Perform, believing weakness related to AGP's $240M convertible and risks related to the ongoing whistle blower lawsuit are reflected in valuation.

• Credit Suisse added United Technologies Corp (NYSE: UTX) to its U.S. Focus List.

• JP Morgan upgraded Cadbury Schweppes plc (NYSE: CSG) to Neutral from Underweight.

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

MOST NOTEWORTHY: Visicu, Inc (EICU), Ciena Corp (CIEN), Apple Inc (AAPL) and Time Warner Cable (TWC) were some of today's more notable initiations:

• Prudential started Visicu Inc (NASDAQ: EICU) with an Underweight rating and $7 target and said competitor substitute ICU modules, hesitant customers and patent challenges could impact future sales activity.

• RBC initiated Ciena Corp (NASDAQ: CIEN) with an Outperform rating and $33 target based on improving demand outlook driven by growth in video and data-traffic.

• W.R. Hambrecht initiated shares of Apple Inc (NASDAQ: AAPL) with a Buy rating and $110 target based on the company's impressive desktop and notebook offering that continues to grow faster than the industry and command higher ASPs, an iPod franchise that dominates the category and represented almost half of total company revenues in the strongest quarter in its history, December 2006, among other things.

• Deutsche Bank initiated Time Warner Cable (NYSE: TWC) with a Buy rating and $46 target. The firm is bullish on cable sector prospects and sees upside from consumer and commercial telecom services and growth in advanced video services.

OTHER INITIATIONS:

• RBC started F5 Networks, Inc (NASDAQ: FFIV) with an Outperform rating and $90 target.

• Stanford initiated HealthSouth Corp (NYSE: HLS) with a Buy rating and $31 target.

• Kenexa Corp (NASDAQ: KNXA) was started at Jefferies with a Hold rating and $36 target.

• Stern Agee initiated Chico's FAS, Inc (NYSE: CHS) with a Buy rating and $26 target.

• JP Morgan initiated Red Hat, Inc (NYSE: RHT) with a Neutral rating.

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