Ronald W. Burkle, the grocery magnate with a net worth estimated at more than $3 billion, has acquired an 8.3% stake in Barnes & Noble (NYSE: BKS) through his Yucaipa American Funds, LLC investment vehicle.

The 13-D contained nothing especially interesting -- just the usual boilerplate: The shares were acquired for investment purposes, but also reserved the right to talk to other investors or management about ways to maximize value. The 13-D added that the shares were acquired because the investors believed they "were undervalued by the market at the time they were acquired."

The Wall Street Journal notes (subscription required) that while the company has seen its performance battered by economic woes, it has a strong balance sheet and competent management. If Borders Group (NYSE: BGP) collapses, Barnes & Noble could be the most direct beneficiary. The deathwatch is one, with shares of Borders trading around 50 cents per pop.

Given the high regard that the company's management is held in, this investment seems unlikely to turn into a true activist situation: So while Burkle's investment is a strong vote of confidence from a highly respected mogul, it's not likely to be much of a catalyst for anything.