Hansen Natural's

(HANS)

second-quarter profit met Wall Street's estimates and sales surged 82.6% year over year, but that wasn't enough for investors, who bailed out and sent shares of the juicemaker tumbling.

Net sales for the second quarter rose to $156 million from $85.4 million a year ago, but the top line was a bit short of analysts' expectations for $157.3 million.

Hansen earned $28.2 million, or 28 cents a share, matching the consensus estimate carried by Thomson Financial. Last year, the company earned $15.2 million, or 16 cents a share. The year-ago results have been adjusted for a 4-for-1 stock split.

Shares of Hansen were diving $5.75, or 14.3%, to $34.50 in premarket trading Monday.