Most conspicuous among the casualties has been commercial real estate, which is selling for, on average, one-fifth of its peak value.

FORBES: Double-Dipping Into Deflation?

The picture of these big companies facing short-term trouble should peak interest from value investors.

FORBES: Connect

In a 20-year period, Cape ostrich feathers tripled in value, and at their peak their price per pound was almost equal that of diamonds--in hindsight, a sure sign of a bubble economy.

FORBES: The Ostrich Feather Crisis

Now, we've recovered -- in part because of the policies that we put into place to stabilize the situation, the stock market has recovered 60-70 percent of its value from its peak.

WHITEHOUSE: The Economy and the American Family

That pushed the market-value component of the index to a two-year high of 855.6 (the actual peak was on Jan. 28 at 856.3).

FORBES: Leveraged loan returns hit 4-month high of 1.06% in January

In the big picture, the two partners argue, their bubble-era purchases may have declined in value from the peak, but they will still generate solid returns for investors over time.

FORBES: The Truth About Bain: Inside The House That Mitt Built

U.S. manufacturers now produce three and a half times more output per worker hour than they did in the peak employment year of 1979, in part because offshoring has sent many low-value jobs overseas, but also because automation has replaced lots of factory jobs.

FORBES: Connect

Indeed, the value of deals done worldwide is now nearly two-thirds below its peak during the boom days of 2000.

ECONOMIST: Through gritted teeth | The

The 30-year bond has already lost 11.7%, while the popular 20-year bond etf TLT has lost 16.2% of its value since its peak in early September.

FORBES: The Fed Bagged One Bear In 2010 But Birthed Another