MOST NOTEWORTHY: S1 Corp, CME Group and Elizabeth Arden were today's noteworthy upgrades:

• Stephens upgraded shares of S1 Corp (NASDAQ: SONE) to Overweight from Equal Weight after meeting with management to reflect their increased confidence in the company's ability to execute. The firm maintains a $9 target on the stock.
  
• Citigroup upgraded shares of CME Group (NYSE: CME) to Buy from Hold as they find the risk/reward attractive with volumes picking up and consensus estimates at more rational levels. The firm maintains a $485 target.
  
• Oppenheimer raised Elizabeth Arden (NASDAQ: RDEN) to Outperform from Perform on valuation, as they believe the current share price does not adequately reflect potential earnings accretion from the company's licensing agreement with Liz Claiborne (NYSE: LIZ) or restructuring savings.

OTHER UPGRADES:

• Double Hull Tankers (NYSE: DHT) was raised to Neutral from Underweight at JP Morgan.
  
• Hovnanian (NYSE: HOV) was upgraded at UBS to Neutral from UBS.
  
• BMO Capital upgraded Xyratex (NASDAQ: XRTX) to Outperform from Market Perform.

Here are some highlights from this past week's earnings coverage from BloggingStocks:

• Astec Industries Inc. (NASDAQ: ASTE) beat expectations and raised its guidance.
• Blockbuster Inc. (NYSE: BBI) fourth-quarter profit fails to offset the full-year loss.
• China Techfaith Wireless Communication Technology (NASDAQ: CNTF) beat analysts' expectations.
• Costco Wholesale Corp. (NASDAQ: COST) met analysts' estimates, buoyed by higher fuel prices.
• FTI Consulting Inc. (NYSE: FCN) beat expectations and raised its full-year guidance.
• H&R Block Inc. (NYSE: HRB) narrowed its loss due to higher sales and smaller subprime losses.
• Jackson Hewitt Tax Service Inc. (NYSE: JTX) missed estimates as third-quarter profits declined sharply.
• LifeCell Corp. (NASDAQ: LIFC) beat fourth-quarter estimates and offered full-year guidance.
• Marvell Technology Group (NASDAQ: MRVL) lowered its first-quarter forecast , sending shares lower.
• Porsche AG (OTC: PSEPF) profit soared on strong sales of its Cayenne.
• S1 Corp. (NASDAQ: SONE) beat expectations and offered full-year guidance.
• Saks Inc. (NYSE: SKS) fourth-quarter profit nearly doubled, but full-year profit declined.
• Urban Outfitters Inc. (NASDAQ:URBN) beat expectations on strength in same-store sales.
• Walgreen Co. (NYSE: WAG) reports strong same-store sales ahead of its quarterly results.

Also, see Timothy Sykes's take on Warren Buffett's annual letter to Berkshire Hathaway (NYSE: BRK.A) shareholders. Zac Bissonnette is interested in where earnings actually come from. And Saks, Costco, and other retailers saw stronger February same-store sales despite recession concerns, but JC Penney Co. (NYSE: JCP) didn't feel the love.

Upcoming results to watch for include Kroger Co. (NYSE: KR), Boston Beer Co. (NYSE: SAM), J. Crew Group Inc. (NYSE: JCG), Jones Soda Co. (NASDAQ: JSDA), Blackstone Group (NYSE: BX), and Men's Wearhouse Inc. (NYSE: MW).

Visit AOL Money & Finance for more earnings coverage.

S1 Corporation (NASDAQ: SONE) provides financial institutions, retailers and processors with enterprise service software products designed to facilitate online transactions, branch/call center customer interactions, and sales/service operations. Application packages address such specialties as investments, insurance, customer relationship management and banking processes. S1 also offers data center and application hosting services. It operates under technology alliances with the likes of Cisco Systems (NASDAQ: CSCO), IBM (NYSE: IBM) and Microsoft (NASDAQ: MSFT).

The company pleased investors last week, when it reported Q4 EPS of 11 cents and revenues of $53.4 million. Analysts had been expecting eight cents and $53.1 million. Management also guided FY08 EPS to 37-40 cents (38 cent consensus) and FY08 revenues to $216-$220 million ($219.2M consensus).

MOST NOTEWORTHY: Boston Scientific (BSX), Medtronic (MDT), St. Jude Medical (STJ), Bankrate (RATE) and AXA (AXA) were today's noteworthy initiations:

• Thomas Wiesel initiated coverage of the Medical Devices Industry:
• Boston Scientific (NYSE: BSX) was initiated with an Underweight rating, expecting shares to Underperform peers due to reductions in estimates, risks to the stent business and valuation.
  
• Medtronic (NYSE: MDT) was initiated with an Overweight rating, saying attractively valued as they believe the growth in underlying markets may be more robust than the current sentiment suggests.
  
• St. Jude Medical (NYSE: SJT) was initiated with an Overweight rating, saying shares offer exposure to attractive drivers, a management team with the best track record in the segment, and a potential acquisition candidate.
  

• Stephens believes the recent weakness in Bankrate (NASDAQ: RATE) due to "turmoil" in the market has created an attractive entry point, starting shares with an Overweight rating.

• Morgan Stanley assumed coverage of AXA (NYSE: AXA) with an Overweight rating, citing an attractive risk/reward and strong free cash flow...

OTHER INITIATIONS:

• S1 Corp (NASDAQ: SONE) was initiated with a Market Perform rating at Avondale.

• Needham started Blue Coat Systems (NASDAQ: BCSI) with a Buy rating.

• Credit Suisse initiated AK Steel (NYSE: AKS) with a Neutral rating.

• Jefferies started Molex (NASDAQ: MOLX) with a Hold rating.

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

Fiserv Inc. (NYSE: FISV) -- an operator of bank ATM machines -- bought CheckFree Corp. (NASDAQ: CKFR) today, according to Bloomberg News. Why did this happen and who could be next?

Fiserv's $4.4 billion acquisition represents a big bet on the growth in the Internet banking industry. And Internet banking is a growing business for the simple reason that it's cheaper and quicker to do banking over the Web than to build and operate a network of branches. Earlier in the year, Fiserv was outbid by Fidelity National Information Services Inc. (NYSE: FIS) when Fiserv tried to buy rival EFunds Corp. for $1.5 billion.

The combination will allow the company to eliminate about $100 million a year in expenses. The sale, which the companies expect to close by the end of the year, will add more than $125 million to revenue. Fiserv expects the purchase to add to earnings per share in 2008

One of the nation's pioneering chip makers was founded in 1959 by eight engineers who opened for business in a small house above a dentist's office in Danbury, Connecticut. They made transistors, but soon graduated to the new integrated circuits abd moved to California's Silicon Valley.

National Semiconductor (NYSE: NSM) manufactures a broad range of analog and mixed signal semiconductor devices and subsystems. Products include power management circuits, display drivers, audio and operational amplifiers, interface products and data conversion devices. These are used in communications, networking, automotive, test measurement and aerospace applications. Customers include IBM (NYSE: IBM), Motorola (NYSE: MOT), Nokia (NYSE: NOK) and Sony (NYSE: SNE). Texas Instruments (NYSE: TXN) is a major competitor.

Jim Cramer may deserve a lot of praise, but in our analysis consistency is not one of his strong points. Tonight on MAD MONEY he looked into his crystal ball and showed us the future. Before seeing the future, though, he had to take us to the past ... not far, naturally. Just back to Monday morning, and pretend you owned Open Solutions Inc. (NASDAQ:OPEN). If you did own OPEN, you would have been up $7 on the buyout.

What is he finding in his crystal ball? No, it's not Dorothy and her little dog, too. It's "THE NEXT OPEN."

He says the next OPEN is S1 Corporation (NASDAQ:SONE). He said that Carlyle and another private equity group is buying OPEN,and they may sell some off and keep some. Private equity firms, he says, are the buyers of last resort these days. Not only that, but they tend to parrot one another. If you were a private equity firm, and you were looking for something like OPEN, you would find SONE. SONE offers solutions instead of just software, and three-quarters of the company's business is recurring.

He also wanted to go over the fundamentals. SONE dropped the ball with no growth in 2005, and he thinks they are back on track in 2006. Cramer said if you start adding this in after a couple days it will work. He said they also have some tax credits that will keep it from paying out too much in taxes.

SONE closed down 0.8% today, but shares have now jumped more than 15% to $5.80 in after-hours trading.

So much for Cramer's attitude of "We don't want to buy stocks just because they could be buyout candidates."

Jon Ogg is a partner in 24/7 Wall St. LLC; he does not own securities in the companies he covers.