Electronics retailer RadioShack Corp. reports earnings for the second quarter on Thursday. The following is a summary of key developments and analyst opinion related to the period.

An analyst on Friday said the limited availability of Apple's popular iPhone could hurt consumer electronics retailers and even traditional book retailers.

The Dow Jones Industrial Average shed 1.5 percent, ending the day firmly in bear-market territory. GM took a hit as one analyst raised the prospect of bankruptcy. Lehman Brothers rose.

Stocks were back on the see-saw Wednesday, rising and falling with each new report or flinch in oil prices.

Stocks were back on the see-saw Wednesday, rising and falling with each new report or flinch in oil prices.

Stocks were back on the see-saw Wednesday, rising and falling with each new report or flinch in oil prices.

Circuit City Stores Inc. plummeted to historic lows in trading Wednesday after Blockbuster Inc. withdrew its takeover bid.

Second acts should not be taken for granted. Apple and Steve Jobs have yet to make that mistake and they're unlikely to do so with the launch of the new iPhone. The company and its founder have been riding high in recent years, but they've both seen darker, Darwinian days in the ever-evolving tech world.

In spite of the built-in WiFi, the touch-screen that lets users manipulate data and an accelerometer that allows the on-screen image to rotate with the device, the reality is, without a network that allows users to fully realize its capabilities, the iPhone is only achieving a portion of its potential.

With each new release of the iPod, Apple's loyal, often fanatical, customer base was quick to abandon their perfectly good music players for the one with the latest and greatest features. But will a freshly updated iPhone inspire the same kind of upgrade frenzy? Yes and no.

The release of Apple's next-generation, 3G mobile device will usher in a new chapter of big-time growth for the company.

Blockbuster, the largest U.S. movie rental chain, posted a higher-than-expected quarterly profit as it cut costs by closing stores, reducing advertising and overhead expenses.

"Grand Theft Auto 4" went on sale Tuesday, with fans lining up at midnight to grab the first copies of the criminal action game hailed as a brutal and satirical masterpiece equal to films like "The Godfather."

Big banks topped this week's investing news as they continued to fight their way through the subprime mortgage mess. For some, like JPMorgan Chase and Citigroup, which both reported earnings this week, it meant continued writedowns.