Analyst Upgrades

• Medicis (MRX) to overweight from neutral at Piper Jaffray, to outperform from market perform at Bernstein, to outperform from sector perform at RBC Capital and to overweight from neutral at JPMorgan.
• Wellpoint (WLP) to buy from neutral at Davenport.
• Humana (HUM) to buy from hold at Jefferies.
• Frontier Oil (FTO) to equal weight from underweight and Resources Connection (RECN) to overweight from equal weight at Barclays.

Analyst Upgrades

• Interpublic Group (IPG) to buy from hold at Deutsche Bank.
• Radware (RDWR) to outperform from perform at Oppenheimer.
• Fluor (FLR) and Waddell & Reed (WDR) to buy from hold, as well as AllianceBernstein (AB) to hold from sell, at Citigroup.
• MetroCorp (MCBI) and American Capital (AGNC) to outperform from market perform at Keefe Bruyette.
• International Flavors (IFF) to overweight from equal weight at Barclays.
• BioCryst (BCRX) and Southern Company (SO) to buy from neutral at BofA/Merrill.
• Bunge (BG) to overweight from neutral at HSBC.

Analyst Upgrades

• Union Pacific (UNP) and Polycom (PLCM) were upgraded to outperform from market perform at Wells Fargo.
• Time Warner Cable (TWC) was upgraded to outperform from sector perform at RBC Capital.
• Cheesecake Factory (CAKE) was upgraded to neutral from underweight at JPMorgan.
• LaSalle Hotel (LHO) was upgraded to outperform from neutral at RW Baird.
• Graco (GGG) was upgraded to buy from hold at BB&T.
• Valley National (VLY) was upgraded to market perform from underperform at Keefe Bruyette.
• Credit Suisse (CS) was upgraded to hold from sell at RBS.
• U.S. Bancorp (USB) was upgraded to outperform from perform at Oppenheimer.
• Penn National (PENN) and Riverbed (RVBD) were upgraded to buy from hold at Jefferies.
• Goodrich (GR) was upgraded to outperform from neutral at Cowen.
• Amazon.com (AMZN) upgraded to buy from average at Caris.

Analyst Upgrades

• Apollo Group (APOL) was upgraded to sector perform from underperform at RBC Capital. The firm has a $75 target on the stock.
• JPMorgan raised Westlake Chemical (WLK) to overweight from neutral.
• Morgans Hotel (MHGC) was upgraded to outperform from market perform at JMP Securities.

On today's STOP TRADING! segment on CNBC, Jim Cramer changed his mind about a stock. Morgans Hotel Group. Co. (NASDAQ:MHGC) has gone up after Cramer thought it wouldn't back at the end of last year. The CIBC analyst that had remained positive on the show that came on said their target on this one was $27. He thinks the Hard Rock deal may help but the other deals that it has under contract and in negotiations with will drive the company.

Cramer then said he was looking at Melco PBL Entertainment (NASDAQ:MPEL) and said the exposure to Macau on other casinos may come into play against the names. He noted MPEL on his SELL BLOCK on Thursday. Cramer said he's done on Las Vegas Sands (NYSE:LVS).

MOST NOTEWORTHY: Plexus Corp (PLXS) and Ameristar Casinos Inc (ASCA) were some of today's most notable initiations:

• Lehman initiated Plexus Corp (NASDAQ: PLXS) with an Underweight rating and $15.50 target.

• Wachovia started Ameristar Casinos Inc (NASDAQ: ASCA) with an Outperform rating; the firm sees upside for Ameristar through growth of existing properties that have expansions and the removal of the $500 loss limit in Missouri.

OTHER INITIATIONS:

• Mattel Inc (NYSE: MAT) was initiated with a Hold rating at Sterne Agee.

• First Albany started Gaming Partners International Corp (NASDAQ: GPIC) with a Buy rating and $23 target.

• Jefferies initiated Morgans Hotel Group Co (NASDAQ: MHGC) with a Hold rating and $20 target based on valuation.

• UBS started E*Trade Financial Corp (NASDAQ: ETFC) with a Buy rating and $29 target.

• UBS also started TD Ameritrade Holding Corp (NASDAQ: AMTD) with a Neutral rating on valuation.

• Stifel initiated Saia Inc (NASDAQ: SAIA) with a Buy rating and $31 target; the firm is positive on Saia's growth and said the company should be the biggest beneficiary of further tonnage leakage from Central Freight Lines, which recently went private.

• William Blair started US BioEnergy Corp (NASDAQ: USBE) with an Outperform rating.

• JMP Securities assumed coverage of Delta Financial Corp (NYSE: DFC) with a Strong Buy rating and $13 target.

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