Analyst Upgrades

• SanDisk (SNDK) was upgraded to outperform from neutral at RW Baird.
• JPMorgan resumed Potash (POT) at overweight, up from neutral.
• Ariba (ARBA) was upgraded to buy from neutral at Roth Capital.
• Cirrus Logic (CRUS) was upgraded to buy from hold at Jefferies.
• Morgan Stanley upgraded Tesoro (TSO) to overweight from equal weight.
• Solarfun Power (SOLF) was upgraded to buy from hold at Auriga.
• Barclays upgraded Ciena (CIEN) to overweight from equal weight.
• Optimer Pharm (OPTR) was upgraded to outperform from market perform at JMP Securities.
• Argo Group (AGII) was upgraded to outperform from market perform at FBR Capital.
• BofA/Merrill upgraded Green Mountain (GMCR) to buy from underperform and Southern Company (SO) to neutral from underperform.

Analyst Upgrades

• Best Buy (BBY) was upgraded to top pick from outperform at RBC Capital, as the firm thinks the company's valuation is inexpensive while it will perform well during the holiday season.
• Credit Suisse upgraded CF Industries (CF) to outperform from neutral, citing favorable fundamentals in nitrogen and phosphate markets.
• Canadian Solar (CSIQ) was raised to buy from hold by Jefferies, which cited expectations for higher selling prices next year and cost savings from sourcing more components internally.
• BMO Capital upgraded RC2 Corp. (RCRC) to outperform from market perform as the firm believes that RC2's baby products are performing better than previously expected.
• Ericsson (ERIC) was upgraded to neutral from underperform at BofA/Merril.
• ProLogis (PLD) was upgraded to buy from hold at Stifel Nicolaus.
• Constellation Energy (CEG) was upgraded to outperform from neutral at Macquarie.

Analyst Upgrades

• Morgan Joseph upgraded Cree (CREE) to buy from hold ahead of Tuesday's Q3 report. The firm, which has a $100 price target on the stock, expects LED demand to drive revenue growth as both China and the U.S. are increasingly strong.
• Janney Montgomery upgraded Salesforce.com (CRM) to buy from neutral on expectations the company will benefit from the migration of software to SaaS deployments. The firm upped its target price for shares to $94 from $67.
• Barrington upgraded Henry Schein (HSIC) to outperform from market perform, citing an attractive valuation, increased confidence in the outcome of the Butler-Schein Animal Health integration and improving momentum in dental equipment. The firm has a $74 price target for shares.
• Advance Auto Parts (AAP) was upgraded to buy from hold at BB&T.
• Red Hat (RHT) was upgraded to outperform from perform at Oppenheimer.
• UBS (UBS) was upgraded to overweight from neutral at HSBC.

Analyst Upgrades

• Jefferies upgraded Citrix Systems (CTXS) to buy from hold and raised its target to $48 from $43, citing VMware's (VMW) strong Q4 report and survey results that indicate continued strength for Citrix.
• Citigroup upgraded Amylin Pharmaceuticals (AMLN) to buy from hold on confidence the company's LAR drug will be approved following the approval of Novo Nordisk's (NVO) Victoza. Citi raised its target price for Amylin shares to $27 from $4.
• Baird upgraded Texas Instruments (TXN) to outperform from neutral and raised its target to $30 from $28. The firm believes it is too early to take profits in Texas Instruments and notes that checks continue to indicate a continued recovery in end-demand.
• Lexmark (LXK) was upgraded to overweight from equal weight at Barclays.
• Salix (SLXP) was upgraded to outperform from perform at Oppenheimer.
• Plexus (PLXS) was lifted to outperform from neutral at Credit Suisse.

Today was one of those trading days where it felt as though a down-day was certain. A lack of earnings news after the fear of a trade-war with China loomed early on over a tire tariff being passed on. But the market steadied after a initial drop and slowly came back before turning positive in the afternoon session. This was one of those that felt as though the closing bell was again a coin toss right up to the close of the 4:00 bell. Here are today's unofficial closing bell levels:

Dow 9,624.61 +19.20 (0.20%)
S&P 500 1,049.06 +6.33 (0.61%)
Nasdaq 2,091.78 +10.88 (0.52%)

Top Trader Alerts
Top 10 Analyst Calls

Analyst upgrades:

• Goldman said International Paper (NYSE: IP) is its top pick in the group citing leverage to early cycle containerboard. The firm upgraded shares to Conviction Buy from Buy and has a $26 target on the stock.
• Morgan Keegan upgraded Healthcare Realty Trust (NYSE: HR) to Outperform from Market Perform citing valuation and better-than-expected Q2 results.
• William Blair upgraded Harbin Electric (NASDAQ: HRBN) to Outperform from Market Perform as it believes the Chinese economy is likely to accelerate and the company's balance sheet is strengthened following the retirement of debt.
• Allstate (NYSE: ALL) was upgraded to Buy from Neutral at BofA/Merrill.
• VeriSign (NASDAQ: VRSN) was upgraded to Outperform from Neutral at Credit Suisse.
• Commercial Vehicle Group (NASDAQ: CVGI) was upgraded to Overweight from Underweight at JPMorgan.

Monday, May 12

• Sprint Nextel Corp. (NYSE: S) to report Q1 earnings; conference call at 8:00am.
• W.W. Grainger, Inc. (NYSE: GWW) to hold sales conference call at 8:00am.
• XM Satellite Radio Holdings, Inc. (NASDAQ: XMSR) and Sirius Satellite Radio, Inc. (NASDAQ: SIRI) to report quarterly earnings; the conference call is at 10:00am for XM and at 4:30pm for Sirius.

Tuesday, May 13

• Wal-Mart Stores, Inc. (NYSE: WMT) to report Q1 earnings; conference call at 7:30am.
• Toll Brothers, Inc. (NYSE: TOL) to report preliminary Q2 results and outlook at 2pm.
• Applied Materials, Inc. (NASDAQ: AMAT) to report Q2 earnings; conference call at 4:30pm.

Wednesday, May 14

• FCC Open Commission Meeting at 9:30am.
• SEC Open Commission Meeting at 10:00am.
• Macy's, Inc. (NYSE: M) to report Q1 earnings; conference call at 10:30am.
• Agilent Technologies, Inc. (NYSE: A) to report Q2 earnings; conference call at 4:30pm.

MOST NOTEWORTHY UPGRADES:

• Tortoise Capital (NYSE: TTO) was upgraded to Buy from Neutral at Merrill Lynch.
• Brean Murray upgraded shares of California Water Service (NYSE: CWT) and SJW Corp. (NYSE: SJW) to Buy from Hold on valuation following the recent weakness.

MOST NOTEWORTHY DOWNGRADES:

• Broadpoint downgraded shares of Cache Inc. (NYSE: CACH) to Neutral from Buy and lowered their estimates after the company reduced its Q4 guidance. The broker also removed its $21 target.
• Piper downgraded shares of Salix Pharmaceuticals (NASDAQ: SLXP) to Sell from Neutral to reflect concerns over the company's IBD franchise and potential Xifaxan patent concerns.

MOST NOTEWORTHY INITIATIONS:

• Pacific Crest initiated shares of SuccessFactors (NASDAQ: SFSF) with an Outperform rating and $18 target, and believes the company has better visibility than its On-Demand peers with 2.5 year deals.