David Einhorn, one of America's most prominent hedge fund managers, is betting against hot tech stocks, saying "There is a clear consensus that we are witnessing our second tech bubble in 15 years."

• It looks like General Motors will file for bankruptcy on Monday. [WSJ]
• Bill Ackman, the activist investor who's been taking aim at Target for months now, lost his battle to remake the company's board yesterday. [Fortune]
• A group of banks and money managers are now trying to "fend off" some of the new trading rules proposed by the Obama administration. [WSJ]
• The U.S. economy shrank at a 5.7 percent annual pace in the first quarter, which makes it the worst six-month performance in five decades. [BN]

More than 1,000 hedge fund managers gathered at Lincoln Center today for the Ira W. Sohn Investment Research Conference, an event that raises money for charity as well as gives other members of the industry a chance to gleam investment recommendations from some of the brightest financial geniuses around. (Those who paid the $3,000-per-person fee this year were treated to talks by the likes of Jim Chanos, Mark Kingdon, Stephen Mandel, Peter Schiff, and Peter Thiel.) Last year's conference was a particularly dramatic affair. David Einhorn, the founder of Greenlight Capital, used the event as an opportunity to explain why Lehman Brothers was headed off a cliff. Those who heeded Einhorn's advice did well for themselves, of course: The bank went bust just four months later. Einhorn spoke at the annual confab once again today, although it's too soon to know if the poker-loving hedge fund manager took aim at another financial firm this time around. In the meantime, though, Einhorn's lawyers seem to have done just that. They've been busy trying to crush the other Greenlight Capital.

♦ October will go down as one of the gloomiest months in history. [CNN]
♦ Barclays plans to raise $11.8 billion by selling shares to Abu Dhabi and Qatar in order to meet Britain's new capital requirements. [NYT, WSJ]
♦ The banks benefiting from the bailout also owe $40 billion in compensation to employees, just in case you were wondering where your tax dollars were going. [WSJ]
♦ Meanwhile, banking CEOs may be in talks to cap compensation. Or they may just be paying the idea lip service in this sensitive political climate. [WSJ]

Rumors: did they take down Lehman? This was one of those nagging questions to which we were too overwhelmed to answer yesterday. Now we know: Yes and no! On the one hand, as both rumormonger David Einhorn and pretty stiletto-wearing former Lehman CFO Erin Callan could tell you, that is how capitalism works. You short a stock, you start a word-of-mouth marketing campaign about how, say, "Lehman is the new Bear," which translates roughly to "Lehman is the new venerable investment bank whose demise those terrible short-sellers and their malicious rumormongering will turn into a self-fulfilling prophecy," and, lo and behold, the shit happens. Of course…it doesn't happen if your company has a sane and convincing leader who can go on CNBC and say, "here, look at our books! Our firm has such robust ratios of cash and hard tangible assets to covenants and other accounts payable that it really doesn't matter what our stock price does because, familiar as we are with the pussy nature of Wall Street confidence and the easily-distracted myopic ephemera-addled lemmings who govern such day-to-day fluctuations, we've seen to it to inoculate our business from such attacks by stockpiling enough hard currency and solid — but also liquid! — financial instruments that we can weather a crisis of confidence without having to undermine our case by begging them for money!" Lehman had no such leader. And it had no such assets!

The Wall Street Journal has the skinny on the hedge funders who are "defying skeptics who questioned whether they could keep their runs going." John Paulson's fund is up 20 percent through the end of June; Phil Falcone's Harbinger Capital Partners I is up 42 percent; and Daniel Arbess, who oversees Perella Weinberg's Xerion fund, posted a 25 percent gain. What about Lehman short-seller David Einhorn, who earned such breathless coverage from New York a few weeks ago? "Up only a few percentage points through June." [WSJ]