However, Mr Crise suggests that it could be viewed in the same way as varying risk premiums on different countries' government bonds, meaning that it reflects uncertainty about the relative attractiveness of a country's equity markets.

ECONOMIST: Test-driving a new model

Several factors have conspired to push risk assets even higher including extraordinary support by the Bernanke Fed, relative calm in Europe, and diminished political uncertainty in Washington.

FORBES: S&P 500 Closes At Record High As U.S. Stocks Fire On All Cylinders

Markets fell hard and wide Tuesday, as a combination of bad news and low volume reminded Wall Street of the uncertainty plaguing investors, despite the relative stability of the past few days.

FORBES: Magazine Article

Given the frequency with which college coaches are courted by the NFL, the ultra competitive recruiting landscape, the higher-than-average academic standards relative to other Division I schools, and the inherent uncertainty of knowing how 18-22 year old kids will perform under pressure, there are no guarantees for prolonged success.

FORBES: Magnitude of Notre Dame's 2012 Brand Restoration Hinges on USC Game

During the second quarter, several European companies pulled their listing plans as renewed uncertainty over the euro-zone crisis brought to an end a period of relative calm to markets.

WSJ: Europe's IPO Market Looks to U.S. for Inspiration