Tiffany & Co. announced Thursday at its annual shareholders meeting that it is raising its quarterly dividend by 10% to 55 cents per share, up from 50 cents per share. The dividend will be paid on July 10, 2018 to shareholders of record as of June 20, 2018. Tiffany shares closed Wednesday at an all-time high, but have slipped 1% in Thursday premarket trading. Shares are up 21.3% for the year to date while the S&P 500 index is up 2.2% for the period.