The bulls keep on roaring. 

Sam Stovall, chief investment strategist at CFRA Research, expects the S&P 500 to keep rising this year. His research suggest gains in August and September mean the market typically rallies for the remainder of the year. 

His 12-month price target on the S&P 500 is 2,560, a slight increase from the 2,500 level breached on Friday.

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