Hey, big boy: Several groups of traders are under investigation for colluding to rig interbank lending rates, The Wall Street Journal reports, and most of them are unconnected to the Barclays traders whose cheerful emails surfaced as part of that bank's $451 million settlement with U.S. and U.K. regulators.

Libor numbers suck...Says Alphaville Lisa Pollack. She means the estimates of what banks may pay to end inquiries into interbank rate-rigging, as well as attempts to quantify the size of the derivatives market that moves with Libor.

More London Whale: JPMorgan's chief investment office made large trades in corporate credit derivatives at the end of January and February that may have temporarily boosted the value of the CIOs holdings ahead of internal audits, Bloomberg reports. The lender said earlier this month that the CIO had lost $5.8 billion in the position associated with the trader known as the London Whale, and that an internal investigation had revealed some employees may have exaggerated the value of certain positions to conceal the extent of losses.

Buffett leads on ResCap? Warren Buffett is positioning himself to acquire all of Ally Financial's bankrupt mortgage lender ResidentialCapital, or ResCap, The New York Post reports. Mr. Buffett had already been named the lead bidder for a portfolio of mortgage loans, but it now seen to be overtaking Fortress Investment Group to acquire the firm's mortgage platform as well.

Scott Thompson resumes...his career, joining e-commerce start-up ShopRunner as chief executive officer, some two months after Mr. Thompson was ousted from the top job at Yahoo after activist investor Dan Loeb uncovered inaccuracies on the executive's resume.

Whither Europe: European inspectors are in Athens to decide whether to continue making bailout loans to the troubled country. Spain placed a three-month ban on short-selling stocks, and Italy put a one-week stop on short-selling a list of 29 financial companies. Moody's placed a negative outlook on Germany, citing increased chances of a Greek eurozone exit and continuing struggles in Spain and Italy.

Worst days past? Real estate website Zillow called a bottom on the housing market: "We expect home values to remain relatively flat as the market works through a backlog of foreclosures and high rates of negative equity,” chief economist Stan Humphries said in a release.

Smaller mac: McDonald's said second-quarter profit fell 4 percent.

YouGov looked at the reputational hits suffered by the two companies, and concluded that...lying on your resume isn't as bad as shtupping an employee nearly half your age. Here's the YouGov BrandIndex:

And a grab from the YouGov report:

Yahoo’s reputation bounced back quickly after the April layoffs and only experienced mild bumpiness in the 11 days then-CEO Thompson was under the gun for his college credentials.

On the other hand, when Best Buy CEO Brian Dunn resigned under the cloud of an “inappropriate relationship” with a female employee—at about the same time as the Yahoo layoffs—the chain’s reputation sunk considerably below Yahoo. Best Buy slowly recovered to Yahoo levels from mid-April to mid-May, only to fall back hard again when founder Richard Schulze stepped down for not handling the Dunn affair to the board’s liking.

Well, none of that feels very surprising, but it's interesting today amid news that Mr. Schulze will put his 20 percent holdings in Best Buy in play. After all, Mr. Thompson's ouster helped settle Mr. Loeb's longstanding beef with Yahoo's board. We can't help but wonder, then, what YouGov's research would look like one month after Mr. Schulze relinquished all or some of his stake.

Borrelia burgdorferi, the causative agent for Lyme disease. Credit: Centers for Disease Control and Prevention.

A bug in JPMorgan's chief investment office led to discord. A glitch in Nasdaq's system delayed Facebook's IPO. The next big insider trading trial opens today. And more, in today's Wall Street roundup.

Down-tick: The London and New York desks of JPMorgan's chief investment office had long been at odds, and shouting matches were common at routine conference calls. The problems began when executive Ina Drew contracted Lyme disease in 2010, Dealbook reports.

Irvin Goldman, the top risk monitor in JPMorgan's chief investment office, was fired by Cantor Fitzgerald in 2007 after Mr. Goldman attracted regulatory scrutiny for trading the same stocks in his personal accounts that he traded for a Cantor proprietary account. Mr. Goldman is brother-in-law to former JPMorgan chief risk officer Barry Zubrow.

Add the Commodity Futures Trading Commission, which regulates the U.S. derivatives industry, to the list of federal agencies investigating JPMorgan's recent losses.

Jamie Dimon will address investors at 9:30 a.m. today at the Deutsche Bank conference.

Face-bug: "This was not our finest hour," Nasdaq CEO Robert Greifeld said in a conference call this weekend, after software glitches at the exchange prevented Facebook shares from trading on time. Apparently, trade requests in the 5 milliseconds before shares were set to open tripped Nasdaq's systems, despite thousands of hours of testing.

It's going to be an interesting week for Facebook stock. As the shares flirted with the offering price of $38, lead underwriter Morgan Stanley issued buy orders to support the price of the stock. Whether shares sink below $38 this week will depend on how much firepower Morgan Stanley has left, Reuters reports.

Mark Zuckerberg and longtime girlfriend Priscilla Chan tied the knot this weekend. In spite of the disappointing IPO, we guess the couple was feeling financially secure.

Inside job? Former McKinsey boss and Goldman Sachs director Rajat Gupta stands trial today, charged with sharing corporate secrets with Raj Rajaratnam, the Galleon Group manager serving an 11-year prison sentence after being convicted of insider trading last year. Mr. Gupta's lawyer said the government has the wrong guy, and is expected to shift blame in Goldman's direction; Lloyd Blankfein, Gary Cohn and David Viniar are among the Goldmanites who may be called to testify.

Slo-mo run? After Greek depositors withdrew 700 million euros in a single day last week, central bankers confronted fears of a region-wide run on the banks. The scenario: In the event of a Grexit, regulators would prevent Greeks from moving funds out of the country. Savers in Portugal, say, or Spain, might see the writing on the wall and start emptying accounts, less they get stuck holding a bag of devaluing pesetas.

Back to business: The week-long controversy that lead to the ouster of Yahoo chief resume fudger Scott Thompson didn't prevent the company from moving on with a major deal. Yahoo will sell one half of its stake in Alibaba back to the Chinese Internet company for about $7.1 billion. Yahoo is expected to use the windfall to buy back shares.

Managing Assets: Barclays intends to sell its entire $6.1 billion stake in BlackRock as the lender attempts to boost return on equity. BlackRock will buy back a $1 billion stake.

Big data: Reuters spends some time with Winton Capital's David Harding and finds that broader and less traditional data are crucial weapons in the race for algorithmic supremacy.

Start your engines: Formula One was approved for a Singapore IPO. The auto-racing circuit will start pre-marketing the offering tomorrow, and may raise as much as $3 billion.

Blow back: Jamie Dimon went on Meet the Press and said JPMorgan was "dead wrong" to dismiss early stories of the massive position in credit derivatives accumulated by the bank's chief investment office and the trader nicknamed the London whale. “We got very defensive, and people started justifying everything we did,” Dimon said.

Ina Drew, the JPMorgan executive who loves crisis, is expected to resign today after the bank lost more than $2 billion on a credit derivatives trade she oversaw. Achilles Macris, the executive who oversaw the London-based operation that placed the trades, and trader Javier Marin-Artajo, are also on their way out, the Wall Street Journal reports.

It appears the chief investment office's entire London operation could be dismissed.

Cover up: Who knows what would have happened if Yahoo CEO Scott Thompson had come clean about his resume from the start—in the end it was Mr. Thompson's lie about how the gratuitous degree in computer science first appeared that led to the executive's resignation.

Yahoo named Ross B. Levinsohn—its head of global media and the former News Corp. exec who presided over that company's $580 million takeover of MySpace—as interim CEO.

Meanwhile, Third Point Capital, which led the call for Mr. Thompson's resignation, will end its proxy fight after Yahoo agreed to give the hedge fund three seats on its board of directors, including one to Third Point founder Dan Loeb.

Love letter:  Noster Capital, a London-based hedge fund that owns a small stake in Chesapeake Energy, is calling on CEO Aubrey McClendon to step down. Noster cited more than $1 billion in personal loans secured by Mr. McCLendon's stake in Chesapeake wells, the recent disclosure of off-balance sheet liabilities and...the catering in a letter signed by founder Pedro de Noronha.

Activist investor Carl Icahn, meanwhile, is expected to disclose that he has taken a large stake in Chesapeake.

Filing looms: The board of directors for Residential Capital, the mortgage unit at Ally Financial, is on the verge of filing Chapter 11 bankruptcy. Fortress Investment Group is expected to bid $2.4 billion for the majority of ResCap's assets when the long awaited filing goes through, while the Times lists hedge fund Elliot Management as among the Ally investors that oppose an asset sale.

Filing looms, too: LightSquared executives spent the weekend prepping for bankruptcy court, after negotiations with lenders stalled. LightSquared, the wireless venture backed by Phil Falcone's Harbinger Capital, has until 5 p.m. today to reach an agreement with lenders.

Greek re-vote: Alexis Tsipras, the Syriza party leader who would tear up the rescue plan struck with the European Union, is poised to finish first in the next round of Greek elections, raising the specter of a messy eurozone divorce.

Sales call: Avon is considering a $10.7 billion takeover offer from rival Coty, after rebuffing previous advances.

[DON EMMERT/AFP/Getty Images]

Spain agreed to an independent audit of its financial system as the nation's government seeks to head off concerns that bank bailouts are pushing public finances to the brink of collapse.

Failure to form a governing coalition could prompt a second round of elections in Greece.

The leftist Syriza party reiterated to European officials that it believes the debt deal signed by the previous Greek government is invalid.

Chesapeake Energy faces $1.4 billion in previously unreported liabilities.

David Weber, the SEC's new assistant inspector general for investigations, was placed on leave and banned from entering agency HQ after telling c0lleagues that he wanted to carry a concealed firearm into the office.

Reports surfaced earlier this week that SEC had ordered an independent investigation into complaints of sexual harassment in its inspector general's office.

The Facebook IPO is already oversubscribed, according to Reuters. The offering is generating weaker-than-expected demand, according to Bloomberg.

Yahoo! chief Scott Thompson told top executives that he never submitted a resume or inaccurate information about his background to the company, raising the question of how the inaccuracy wound up in SEC filings.

Morgan Stanley asked hedge fund run by former co-president Zoe Cruz to return funds last month, ahead of Ms. Cruz announcing yesterday that she would close the fund.

Former Lazard CEO William Loomis is back in an advisory role, UBS hired Peter Riccile as global c0-head of real estate, leisure and lodging investment banking and Societe General was said to hire Francis Repka as its CEO for Brazil.

Greenlight Capital founder David Einhorn won the seventh annual Hillel Texas Hold 'Em tournament, helping to raise $500,000 to promote Jewish engagement on college campuses.

The news comes after investor Dan Loeb discovered inaccuracies on the resumes of both Mr. Thompson and Ms. Hart, and published the findings in an efforts to remove Mr. Thompson from the chief executive's office, and to win a proxy battle for four seats on the Yahoo! board.

Lost in the story of Mr. Loeb's broadside, we suppose, is the story of how Ms. Hart, after graduating from Illinois State University with a degree in business administration (not economics and marketing, as Yahoo! SEC filings had indicated), rose through the ranks of Sprint Communications before gaining the chief executive's office at Excite@Home in 2001 and moving on to the top position at International Game Technology, a giant in the world of slot machines and the company that brought you the Aqueduct racino's most famous attraction (pictured above).*

*Most of that according to IGT's investor relations site, which, they may want to update:

Road show: Mark Zuckerberg slipped into the midtown Sheraton through a side door to address investors yesterday, and left in the company of "a dozen beefy security guards," the Journal reports, as Facebook kicked off its IPO road show. The presentation opened with a 30-minute video presentation available here. Following a delay while Facebook's 27-year-old CEO was apparently having a hard time finding his way back from the bathroom, Zuck, Chief Operating Officer Sheryl Sandberg and Chief Financial Officer David Ebersman fielded questions on the company's strategies for China, mobile revenues and its recent $1 billion Instagram acquisition. With excitement building, analysts have been quick to offer opinions on Facebook, with Sterne Agee slapping a buy on the company and Wedbush Securities assigning a $44 price target to the stock.

So sorry: Yahoo! CEO Scott Thompson apologized to employees for lying on his ... wait, no, for the distraction caused by the "disclosure of my academic credentials." You can find the whole letter (addressed "Yahoos:") over at Dealbook. Third Point Capital's Dan Loeb has been calling for Mr. Thompson to step down since last week, when the hedge fund manager asserted that the executive lied on his resume.

Trader exodus: Nearly two dozen of Wall Street's most profitable credit traders have defected from banks in the past 13 months, Bloomberg reports, as lenders cut bonuses and regulators seek to limit the types of trading banks can engage in.

Chopping red tape: Bank of America data chief John Bottega has a fourth-degree black belt in Okinawa karate, so watch what you say about consolidating bank data, a cause Bottega championed in a previous position at the New York Fed.

Fashion finance: Barney's New York will escape bankruptcy after swapping about $540 million in debt for equity with Richard C. Perry's Perry Capital and Ron Burkle's Yucaipa Companies. The fashion retailer, which filed Chapter 11 in 1996, was acquired by Istithmar, the Dubai-based private-equity firm, for $942 million in 2007. Mr. Perry is known for his "sharp style," and shop's at Barney's, according to Dealbook. No word on Mr. Burkle's fashion sense.

Bailout bonus: The Government Accountability Office said the U.S. could turn a $15.1 billion profit on its bailout of AIG, and Forbes breaks down some of the math. The government had $46.3 billion outstanding in the insurer as of March 22, including the Treasury's $35.9 billion equity stake and $8.3 billion owed to the Fed.

Government nod: Ally Financial has the Treasury's support to put its ResCap mortgage-lending unit into bankruptcy, an Obama administration official told Bloomberg. The auto lender, which was bailed out to the tune of $17 billion, is 74 percent owned by the U.S. government.

Check yourself: The SEC has called for an independent investigation into charges of sexual misconduct against current and former staff in the watchdog's own inspector general's office, sources familiar told the Journal. David Kotz, who was the agency's inspector general during the time the misconduct is said to have occurred, told the paper "as far as I know, the allegations do not involve me."

[Photo by Arnaldo Magnani/Getty Images]

Yahoo! CEO Scott Thompson

Dan Loeb seems like the kind of guy who knows his way around a box of documents. That's bad news for Yahoo!, because he's likely to get just that after requesting board records under a Delaware legal provision, a professor at the state's Widener School of Law says.

Here's the catch-up:  Mr. Loeb uncovered the lie on Yahoo! boss Scott Thompson's resume by calling Stonehill College and enquiring if the institution offered a computer science major at the time of Thompson's graduation (it didn't). He uncovered the lie on the resume of Patti S. Hart, the director who headed the hiring process that landed Thompson at Yahoo!'s helm, by comparing the credentials listed in a 1991 press release with those supplied in 1998.

Now it looks like Mr. Loeb, manager of hedge fund Third Point Capital, may get access to all records, minutes, e-mails and notes pertaining to the hiring process—a scary thought if you're Mr. Thompson, Ms. Hart, of the Willkie Farr & Gallagher associates tasked with the document dive.

If you haven't been following Loeb, the manager of hedge fund Third Point Capital, has been waging a proxy battle to place himself and three others (Harry Wilson, Michael Wolf and Jeff Zucker) on Yahoo!'s board of directors. On May 2, Yahoo! wrote to shareholders expressing the hedge fund manager's unsuitability for the role ("the board continues to believe that Mr. Loeb himself does not bring the relevant skill set and experience").

Bad timing! Mr. Loeb fired back the next day with a letter of his own, revealing the resume inaccuracies and demanding that Mr. Thompson step down. When Yahoo! responded that the error on Mr. Thompson's resume was inadvertent, Mr. Loeb requested board records under Section 220(b) in Delaware's General Corporation Law, which provides shareholders access to documents when the state's Chancery Court finds probably cause of mismanagement.

Here's how things are likely to play out from here: If the Yahoo! board does not meet Mr. Loeb's request, the hedge fund manager can ask the court to compel the delivery. The court would hold an expedited hearing with limited disclosure, said Larry Hamermesh, director of Widener's Institute of Delaware Corporate and Business Law.

"If you take the facts presented in the letter at face value, there’s misconduct by somebody," Hamermesh said. "The more difficult question is, was their any reason to think that the board did not do the job it should have done in assessing Thompson's hiring?"

That's less of a slam dunk, according to Mr. Hamermesh, but "the is a burden of proof is not super high, as the courts encourage stockholders to make this kind of demand if they plan to make a derivative complaint at later time."

For his part, Mr. Loeb argued in his letter today that the board failed its duty to shareholders by failing to conduct a background check on Mr. Thompson:

"Yahoo! has not explained how its Search Committee could hire a CEO without doing a rudimentary check on the applicant’s credentials – a check that would have quickly revealed that Mr. Thompson did not have a computer science degree, as disclosed in the public filings which Mr. Thompson had endorsed for years."

[Yodel Anecdotal/Yahoo! Inc.]