Healthcare provider Humana Inc. HUM said Thursday its board has approved a 12.4% increase in its quarterly dividend to 88.50 cents a share from 78.75 last quarter. The new dividend is payable April 28 to shareholders of record as of March 31. The stock has gained 16% in the last 12 months, outperforming the S&P 500 SPX, which has fallen 7%.

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