Analyst Upgrades

• Las Vegas Sands (LVS) to outperform from neutral at Credit Suisse.
• Boston Scientific (BSX) to outperform from sector perform at RBC Capital.
• Windstream (WIN) to buy from hold at Citigroup.
• Expeditors (EXPD) to buy from neutral at UBS.
• A123 Systems (AONE) to neutral from underperform and Chesapeake Midstream (CHKM) to buy from neutral at BofA/Merrill.
• AvalonBay (AVB) to outperform from neutral and Post Properties (PPS) to neutral from underperform at Cowen.

Despite us being on the heels of the big Russell indexes changing and despite the quarter-end being a day away, this was a boring day. A study showed a small decrease in online job advertisements, but that was the only item on the economic front. Oil traded higher and bond yields came down as traders are voting for more stability the rest of the year there.

Here are today's unofficial closing bell levels:

Dow 8,531.19 +92.80 (1.10%)
S&P 500 927.18 +8.28 (0.90%)
Nasdaq 1,843.34 +5.12 (0.28%)

Top Analyst Calls

OpenTable Inc. (NASDAQ: OPEN) came into the world with a bang on Thursday, shooting from $20 a share to a peak of $33 before settling down for the week at $28.75. A 44% gain makes this the second strong initial public offering (IPO) for a venture-backed company, following the SolarWinds Inc. (NYSE: SWI) debut the day before.

Originally, OpenTable planned a price range of $12 to $14, which crept up to $16 to $18, and eventually to its final level of $20.

So far, it looks like it will be a good week for IPOs. Yesterday, OpenTable upped the price range on its offering.

And, today SolarWinds (NYSE: SWI) hit the markets with its public debut, up 20% to $15.

SolarWinds is a provider of enterprise-class network management software. While there are many players in the market -- especially large companies like Hewlett Packard (NYSE: HPQ), IBM (NYSE: IBM) and Cisco (NASDAQ: CSCO) -- this company has built a unique strategy and business model.

Except for a few deals -- such as the Visa (NYSE: V) public offering -- the IPO market has been fairly quiet. But, there are some companies that think things will warm up.

Take SolarWinds, which has recently filed for an offering. The company develops enterprise-class network management software. What's more, the technology is easy to use (which is a rarity in the space).

As of last year, SolarWinds had more than 50,000 customers, which range from small businesses to Fortune 500 biggies.

A key to SolarWinds success is its focused marketing, which heavily leverages online marketing. There is also a direct sales force that knows how to close leads.

So far, the results have been stunning. From 2005 to 2007, revenues have gone from $27.9 million to $61.7 million. What's more, operating income is about $30.9 million.

And there is much room for growth. According to a research report from Gartner, the network management sector is expected to grow from $4.95 billion in 2008 to $5.66 billion by 2011.

The underwriters on the IPO include JP Morgan (NYSE: JPM), Goldman Sachs (NYSE: GS) and Lehman Brothers (NYSE: LEH). You can also locate the prospectus at the SEC website.

Tom Taulli is the author of various books, including The Complete M&A Handbook and The Edgar Online Guide to Decoding Financial Statements. He also operates DealProfiles.com.