For Warren Buffett, it wasn't a big deal. Monday, his company, Berkshire Hathaway (BRK.A), agreed to purchase the 19.9% of Wesco Financial Corp. (WSC) it did not already own for $548 million. The stock price was only up 1.33% in early trading. Then again, there was no surprise that this transaction would happen -- and that it would be at roughly the net value of Wesco.

Yet the deal certainly has significance. After all, Wesco has been a part of the Buffett empire for decades, and the chief of the company is Charlie Munger, who is the vice chairman of Berkshire. However, he is 87 years old and yes, he is actually thinking about the process of succession. To do this, there will need to be some reshuffling of assets.

MOST NOTEWORTHY: The biotech sector, WESCO International, Wyndham and Century Casinos were today's noteworthy initiations:

• BMO Capital initiated coverage on Arena Pharmaceuticals Inc. (NASDAQ: ARNA) and Gilead Sciences Inc. (NASDAQ: GILD) with Outperform ratings and a $16 target and $51 target and Celgene Corp. (NASDAQ: CELG) and Genentech Inc. (NYSE: DNA) with Market Perform ratings and a $69 target and $85 target.
  
• CIBC initiated shares of WESCO International Inc. (NYSE: WCC) with a Sector Outperformer rating and $46 target. The firm believes lower estimates are already priced into shares and that the company's operating initiatives increase the chances for more stable margins in this environment.
  
• Deutsche Bank started shares of Wyndham Worldwide Corp. (NYSE: WYN) with a Buy rating and $41 target. The firm believes stability of the timeshare industry, international expansion and improved transparency will serve as catalysts for shares.
  
• Century Casinos Inc. (NASDAQ: CNTY) was initiated at Nollenberger with a Neutral rating, citing the underperformance of new properties and concerns from the smoking ban in Colorado; however, the firm believes the company is headed in the right direction.

OTHER INITIATIONS:

• Soleil started shares of Sunoco Inc. (NYSE: SUN) and Valero Energy Corp. (NYSE: VLO) with Buy ratings and targets of $96 and $88, and initiated shares of Tesoro Corp. (NYSE: TSO) with a Hold rating and $55 target.
  
• Rodman & Renshaw started shares of Labopharm Inc. (NASDAQ: DDSS) with a Market Perform rating.
  
• UBS resumed coverage on Kroger Co. (NYSE: KR) with a Buy rating and $34 target.

MOST NOTEWORTHY: Blockbuster Inc (BBI), Molson Coors Brewing Co (TAP), Illumina, Inc (ILMN), and ARM Holdings plc (ARMHY) were today's more noteworthy upgrades:

• Citigroup upgraded Blockbuster Inc (NYSE: BBI) to Buy from Hold based on valuation, improving box office visibility and their belief that the lower-priced online-only rental product will help improve costs.

• Molson Coors Brewing (NYSE: TAP) was upgraded to Buy from Neutral at UBS based on valuation, volume strength and pricing.

• Matrix believes strong demand for genetic analysis equipment is boosting profits for Illumina (NASDAQ: ILMN), upgrading shares to Strong Buy from Sell; Matrix sees upside to their Intrinsic Value Calculation of $50/share.

• ARM Holdings (NASDAQ: ARMHY) was upgraded to Overweight from Underweight at JP Morgan to reflect the strength in the high-end handset market...

OTHER UPGRADES:

• Bristol Myers Squibb Co (NYSE: BMY) was upgraded to Buy from Hold at Citigroup.

• RBC Capital raised Sapient Corp (NASDAQ: SAPE) to Outperform from Sector Perform.

• Sandler upgraded Chemical Financial Corp (NASDAQ: CHFC) to Hold from Sell.

• UBS raised WESCO International, Inc (NYSE: WCC) to Buy from Neutral.

• Piper Jaffray upgraded shares of Omnicell, Inc (NASDAQ: OMCL) to Outperform from Market Perform.

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

MOST NOTEWORTHY: Intel Corp (INTC), Advanced Micro Devices, Inc (AMD), Post Properties, Inc (PPS), Analogic Corp (ALOG) and the base metals sector were today's more noteworthy upgrades:

• DA Davidson raised Intel Corp's (NASDAQ: INTC) rating to Buy from Neutral based on market share gains and unexpected PC growth.

• American Technology upgraded Advanced Micro Devices Inc (NYSE: AMD) to Buy from Neutral as the firm expects shares to trade higher near-term with data not likely to get worse over the next six months. The firm suspects AMD could win a notebook platform at Toshiba Corp (TOSBF) and expects further offerings at Dell Inc (DELL).

• Banc of America upgraded shares of Post Properties Inc (NYSE: PPS) to Neutral from Sell and raised their target to $53 from $42 after REIT Wrap, a real estate industry newsletter, reported the company may have already received several unsolicited bids.

• Stanford upgraded Analogic Corp (NASDAQ: ALOG) to Buy from Hold based on improving fundamentals in the security and medical businesses.

• Goldman upgraded the base metals sector to Attractive from Neutral as the firm believes above-consensus metal prices for 2008-2009 are sustainable. The firm favors copper fundamentals over nickel, zinc and aluminum and views Freeport-McMoRan Copper & Gold Inc (FCX) as its top pick.

OTHER UPGRADES:

• Lehman upgraded Alon USA Energy, Inc (NYSE: ALJ) to Equal Weight from Underweight.

• Bear Stearns upgraded Shanda Interactive Entertainment Ltd (NASDAQ: SNDA) to Outperform from Peer Perform.

• Wesco International, Inc (NYSE: WCC) was upgraded to Strong Buy from Outperform at Raymond James.

• BMO Capital raised ResMed Inc (NYSE: RMD) to Outperform from Peer Perform.

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