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NEW YORK ( TheStreet) -- Platinum Underwriters Holdings (NYSE: PTP) hit a new 52-week high Thursday as it is currently trading at $37.72, above its previous 52-week high of $37.64 with 106,606 shares traded as of 1:25 p.m. ET. Average volume has been 273,500 shares over the past 30 days. Platinum Underwriters has a market cap of $1.28 billion and is part of the financial sector and insurance industry. Shares are up 7.7% year to date as of the close of trading on Wednesday. Platinum Underwriters Holdings, Ltd., through its subsidiaries, provides property and marine, casualty, and finite risk reinsurance coverage products worldwide. It operates in three segments: Property and Marine, Casualty, and Finite Risk.