Should stocks stay at current prices and the analyst prediction come true, the S&P 500 would trade at 12.8 times income on Dec. 31, the lowest level since 1985 except for the six months after Lehman Brothers Holdings Inc.'s bankruptcy in September 2008 and nine months in the late 1980s, according to Bloomberg data. Companies in the S&P 500 are forecast to earn $24.31 this quarter, up from $24.16 at the start of April.

Concern the slowdown will lead to another recession will weigh on stocks even as companies report higher income, said Doug Cliggott, Boston-based equity strategist at Credit Suisse Group AG. He said the S&P 500 will be little changed through year-end.

Not Extreme

"We wouldn't put the market now as extremely rich or in a sense extremely attractively valued," Cliggott said in an interview on Bloomberg Television's "InsideTrack" with Deirdre Bolton on June 13. "Price-earnings multiples will be at or below their historical averages because of all the uncertainties on future growth."

Stocks may also have to do without more stimulus from the Fed, which will complete its second round of Treasury purchases this month. While Fed Chairman Ben S. Bernanke said during a June 7 speech in Atlanta that record monetary stimulus is still needed to boost the "frustratingly slow" U.S. economic recovery, he gave no indication that the central bank will start a third round of so-called quantitative easing.

Retreats in the S&P 500 that exceed 5 percent are common during bull markets, according to data from Birinyi Associates Inc., the Westport, Connecticut-based money manager and research firm. During the nine rallies between 1962 and 2007, the S&P 500 fell that much an average of seven times, the data show. The index has posted nine such retreats during the current advance.

'Strong Backbone'

Global investors increased their cash holdings to the highest level in a year this month as hedge funds slashed the amount of borrowed money invested in stocks, a survey from Bank of America Corp.'s Merrill Lynch unit showed on June 14.

"Valuation is a strong backbone," ABN Amro Private Banking Chief Investment Officer Didier Duret, who manages about $200 billion in Geneva, said in a telephone interview. "It's more or less a reflection of how reluctant investors have been to get back into the equity market."

Kroger in Cincinnati rose 4.5 percent, the most since October 2009, to $23.99 on June 16. The largest U.S. grocery chain increased its fiscal 2012 earnings forecast to as much as $1.95 a share from $1.92. Analysts, on average, estimated $1.90.

Best Buy, the world's biggest consumer-electronics retailer, rallied 4.6 percent two days earlier after reporting profit that exceeded analysts' forecasts, helped by rising demand for smartphones. The Richfield, Minnesota-based company reiterated its full-year projection for earnings per share of $3.30 to $3.55, excluding restructuring costs. Analysts predicted $3.47.