Travelers Cos Inc (TRV.N), the largest listed U.S. property insurer, reported quarterly profit above analysts' expectations, helped by higher business volumes. The company also said its board approved a share buyback worth $5.0 billion. This is in addition to the $1.5 billion remaining under previous authorizations as of Dec. 31, 2010. Travelers reported a net profit of $894 million, or $1.95 a share, compared with a year-earlier profit of $1,285 million, or $2.36 a share.
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