DapuStor (SHE:301666) posted first-half attributable net profit of 1.33 billion yuan, compared with a loss of 353.8 million yuan the previous year.
Earnings per share stood at 3.28 yuan, versus loss per share of 0.90 yuan, according to a Tuesday filing with the Shenzhen bourse.
Operating revenue surged 531% year over year to 4.72 billion yuan from 748.2 million yuan.
Shares of the solid-state drive controller chip maker fell 4% in recent trade.
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