When The Blackstone Group (NYSE: BX) went public, many observers -- myself included -- were concerned by the total lack of corporate governance checks and balances.

But at the time, the private equity industry was so hot that Blackstone could do no wrong, and no one cared enough to complain. But now that KKR is mulling a plan to list on the New York Stock Exchange, things could be different. The wheels have come off the industry, at least for now, and the arrogant attitude of "We'll tell you what we feel like telling you and you'll like it" may not play so well.

While the Blackstone Group (NYSE: BX) is primarily known as a private equity firm, this actually understates things. In fact, it is a diverse global platform that spans hedge funds, corporate advisory and real estate investments.

Actually, the real estate segment is getting bigger. This week Blackstone announced that it raised a $4.3 billion real estate fund with the main focus on opportunities in Europe. It's called the Blackstone Real Estate Partners Europe III fund (for whatever reason, these funds can be a mouthful).

Back in 2007 -- at the height of the private equity bubble -- the Chinese sovereign wealth fund, China Investment Corp. (CIC), agreed to invest $3 billion in Blackstone (NYSE: BX). Of course, it was a disaster. In all, the investment lost roughly two-thirds of its value.

Despite all this, it looks like CIC hasn't given up on Blackstone. In fact, according to a piece in the Wall Street Journal, CIC is prepared to invest $500 million into a Blackstone hedge fund vehicle.

• Deutsche Bank upgraded Lloyds Banking (NYSE: LYG) to Buy from Sell as it believes shares are attractively valued based on the company's earnings potential post recession.
• Susquehanna upgraded MercadoLibre (NASDAQ: MELI) to Positive from Neutral based on valuation and improving macro trends. The firm has a $29 target on the stock.
• Piper Jaffray upgraded Williams-Sonoma (NYSE: WSM) to Buy from Neutral on valuation following the recent pullback.
• MetLife (NYSE: MET) and Torchmark (NYSE: TMK) were upgraded to Strong Buy from Outperform at Raymond James.
• Blackstone Group (NYSE: BX) was upgraded to Buy from Neutral at Goldman.

Blackstone Group co-founder Peter Peterson has elected to donate $1 billion -- which he calls the "vast majority" of his "net proceeds" from the company -- to his very own Peter G. Peterson Foundation. The foundation prints a mission statement on its website:

Our mission is to increase public awareness of the nature and urgency of key economic challenges threatening America's future and accelerate action on them. To meet these challenges successfully, we work to bring Americans together to find sensible, sustainable solutions that transcend age, party lines and ideological divides in order to achieve real results.

There are strange goings on in the markets these days. The latest catch 22 is the rally in junk bonds. Bloomberg reports that "The lowest rated companies that may not be able to afford avoiding bankruptcy and exchanging or buying back debt at the lowest prices on record." That is pushing the prices of junk bonds up in the biggest rally ever. The flip side is that this practice is the higher prices are crowding out some of the neediest companies

Here are some examples:

• The Blackstone Group LP (NYSE: BX) owns Freescale Semiconductor Inc. In March, Blackstone wiped away $1.9 billion of Freescale's debt by offering investors 32 cents on the dollar in loans. Since then the securities have tripled to 54.1 cents on the dollar. Now, the chip maker still has $7.5 billion of debt and would need to do it at much higher prices.

Not long ago, the private equity firm, Fortress Investment Group LLC (NYSE: FIG), appeared to be in deep trouble. But things are looking better now, as the stock price has gone from $1 to $4.65 this year.

In fact, Fortress is now pulling the trigger on some deals. Just this week, the firm teamed up with Crestview Partners LP and Lightyear Capital LLC to invest $450 million in First Southern Bancorp (Lightyear is operated by Donald Marron, who was the former chief of PaineWebber Group).

In what could be the most watched private equity deal of the year, a consortium of buyout firms led by billionaire investor Wilbur L. Ross has set its sights on BankUnited Financial Corp. (NASDAQ: BKUNA), says the Wall Street Journal (subscription required). The consortium includes Carlyle Group and Blackstone Group (NYSE: BX).

Earlier this year, federal regulators declared that the Florida-based lender was "critically undercapitalized" and demanded that it find a buyer or raise new capital. While regulators have traditionally favored other lenders in sales of banks, if Ross's group is successful, it would not only be one of the largest acquisitions in the financial-services sector made by private equity, but could also signal a shift in the government's attitude toward private-equity buyers of banks.

In the middle of 2007, the private equity industry started to crumble as the credit crunch shocked the U.S. financial system. Since then, it's been particularly tough for dealmakers.

Yet, according to a cover story in BusinessWeek, the good days may be here again. In fact, private equity may even help the economy get out of its funk.

And, there is historical precedent. Back in the early 1990s, private equity funds were a key source of restructuring and capital infusions. Interestingly enough, some of the players included the Blackstone Group (NYSE: BX), Carlyle and Apollo (yes, these are now some of the largest funds in the world).

But there's a big difference: Private equity funds now have about $1 trillion in capital to put to work.

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

• Alcatel-Lucent (NYSE: ALU) shares rose even though it reported a wider loss for the quarter.
• American Express Co. (NYSE: AXP) posted better-than-expected Q1 results but warned of challenges.
• Blackstone Group (NYSE: BX) reported a net loss and slumping revenues for the first quarter.
• Center Financial Corp. (NASDAQ: CLFC) was downgraded following its Q1 earnings report.
• Cisco Systems Inc. (NASDAQ: CSCO) posted lower Q3 earnings that still topped analysts estimates.

When the Blackstone Group (NYSE: BX) reported its Q4 results, the company's CEO, Stephen Schwarzman, said that the stock price was "dimwitted." Well, since then, the stock price has surged from $4.87 to $13.44

What happened? Perhaps it's the fact that the financial system has stabilized.

But, if you take a look at the Q1 results (announced yesterday) for Blackstone, things still look ugly. In fact, on the conference call, President Tony James gave a particularly negative view on the economy. For the most part, it looks like it will take a long while to get things back on track.

Buyout funds managed by private equity giants Apollo Management LP and Blackstone Group LP (NYSE: BX) are among a growing number of limited partnerships that have experienced sharp declines in value, reports the Wall Street Journal, which highlights the economy's impact on such funds, as well as the influence of mark-to-market accounting.

Apollo and Blackstone recently disclosed to investors the values of their last buyout funds at year-end. Apollo Investment Fund VI LP, a $10.1 billion investment vehicle that closed in 2005, was held at 34% below cost. Perhaps the most notable Fund VI deal is Harrah's Entertainment Inc., which has struggled with its debt covenants. Apollo and TPG Capital LP acquired Harrah's in January 2008 for $27.8 billion.

Analyst upgrades:

• Citigroup upgraded Abbott Lab (NYSE: ABT) to Hold from Sell on valuation following the stock's recent underperformance. The firm maintains a $48 price target.
  
• Deutsche Bank upgraded shares of Pepsi Bottling (NYSE: PBG) and Dr. Pepper Snapple (NYSE: DPS) to Buy from Hold as they believe carbonated soft drinks market is showing signs of stabilization. The firm raised its price target on Pepsi Bottling to $28 from $25 and on Dr. Pepper Snapple to $22 from $20.
  
• Baird upgraded CommScope (NYSE: CTV) to Outperform from Neutral and raised their target to $19 from $10 as they expect fundamentals to bottom in Q1 and ramp strongly in Q2 as wireless capex outlook improves.
• Sinopec Shanghai (NYSE: SHI) was raised to Buy from Sell at Goldman.
  
• TRW Automotive (NYSE: TRW) was upgraded at JP Morgan to Neutral from Underweight.

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

• Adobe Systems Inc. (NASDAQ: ADBE) was upgraded following its Q1 release and guidance.
• America's Car-Mart Inc. (NASDAQ: CRMT) posted higher earnings in Q3 and same-store sales growth.
• AT&T Inc. (NYSE: T) was upgraded by an analysts who felt that consensus estimates are beatable.
• Berkshire Hathaway Inc. (NYSE BRK.A) suffered a big profit decline, its fifth straight quarterly decline.
• Blackstone Group (NYSE: BX) posted horrible Q4 results as the values of its portfolio shrank.

• Citigroup upgraded Tyco (NYSE: TYC) shares to Buy from Hold on valuation as they believe the recent weakness has created an attractive entry point. The firm lowered its target price to $25 from $26.
  
• Deutsche Bank raised SAP (NYSE: SAP) to Buy from Hold on valuation as it finds the risk/reward attractive at current levels.
  
• Oppenheimer upgraded Onlin Corp (NYSE: OLN) to Outperform from Perform on valuation as it sees strong support at $10 and potential upside to $20. The firm has a $20 target on the stock.
• JP Morgan (NYSE: JPM) and Blackstone (NYSE: BX) were upgraded to Outperform from Market Perform at Keefe Bruyette.
  
• Adobe (NASDAQ: ADBE) was raised to Neutral from Sell at UBS.
  
• Goldman added AT&T (NYSE: T) to the Conviction Buy List.