Is rally for real? Big rallies follow big stock drops

— -- Investors kicked back into rally mode Monday, ending a week-long slump, as Wall Street rediscovered its appetite for stocks.

All three major U.S. indexes climbed 3%, with the Dow Jones industrials up 235 points to 8504, after better-than-expected results from home improvement retailer Lowes and an improving Home Builders index fanned hopes the economy is be on the mend.

In addition, Rochdale Securities analyst Richard Bove noted the potential for "explosive earnings growth and unusually strong stock price performance" for banks as the economy recovers. And Goldman Sachs raised its rating on Bank of America bac to "Buy," due to expectations for solid earnings in the second quarter on strong mortgage and capital markets revenue.

If Monday's rally is a sign the rebound that started in early March is back on track, some bulls say the gains reflect the kind of action investors can expect as stocks recover from the second-worst bear market ever. The reason? Extraordinary sell-offs tend to be followed by extraordinary rallies.

"It's like if you were dropping a rubber ball from the top of a tall building to the sidewalk," says William Gibson of Nollenberger Capital Partners. "You get a big bounceback."

The potential for a powerful rebound offers some solace after the pain of the past 19 months. Between October 2007 and the market's trough this year, investors saw 51% of their money evaporate, including dividends, Ibbottson Associates says, smaller only than the 83% drop in the Standard & Poor's 500 index that started in August 1929.

Among the reasons there could be even better gains ahead:

•Historic downturns give way to historic rallies. The S&P 500's best one-year recovery followed its biggest decline, from August 1929 to June 1932, Ibbottson says. The S&P 500 posted a 163% total return the 12 months after the June 1932 bottom, easily topping the next-best recovery of 42% the 12 months after the June 1970 bottom.

•Recent recessions have ended with powerful bull markets. In the 12 to 21 months following the market bottoms after the previous five recessions, the Dow on average rocketed 55%, says Navellier & Associates.

•Recoveries come fast and with little notice. When stocks finally hit bottom, they tend to rally quickly. Nearly half of stocks' gains the five years after bear markets ending in '74 and '02 came during the first calendar year after the bottom, says Ken Winans of Winans International. "The big gains come when you're still in the fog of war."

And that's the dilemma, as investors wonder if the March 9 low marked the end of the pain or not.

Jumping into the market too early, hoping to catch the bounce, may disappoint investors if stocks retest their lows, Gibson says. "We're past the freefall when people just froze. But we're still contracting," he says. "I don't think anyone can spot the bottom of the economy yet."

Final figures Monday showed the Dow Jones industrial average ended up 235.44, or 2.9%, at 8,504.08. The S&P 500 index was up 26.83, or 3%, to 909.71. The Nasdaq composite index was up 52.22, or 3.1%, to 1,732.36.

The Dow wiped out more than half the losses it suffered last week.