Legal Proceedings	3 Months Ended
Mar. 31, 2013
Legal Proceedings	NOTE 9 – LEGAL PROCEEDINGS The Trust and certain principals of the Sponsor have been named as defendants (along with several other parties) in a consolidated class action lawsuit filed in the United States District Court for the Southern District of New York, styled In re ProShares Trust Securities Litigation, Civ. No. 09-cv-6935. The complaint, as amended, alleged that the defendants violated Sections 11 and 15 of the Securities Act of 1933 by including untrue statements of material fact and omitting material facts in the Registration Statement for one or more ProShares ETFs and allegedly failing to adequately disclose the Funds’ investment objectives and risks. The six Funds of the Trust named in the complaint were ProShares Ultra Silver, ProShares UltraShort Gold, ProShares Ultra Gold, ProShares UltraShort DJ-UBS Crude Oil, ProShares Ultra DJ-UBS Crude Oil and ProShares UltraShort Silver. On September 10, 2012, the District Court issued an Opinion and Order dismissing the class action lawsuit in its entirety. On December 17, 2012, the plaintiffs filed an appeal brief to the United States Court of Appeals for the Second Circuit. Oral argument on plaintiffs’ appeal before the United States Court of Appeals for the Second Circuit was held on May 2, 2013. The Trust believes the complaint is without merit and that the anticipated outcome will not adversely impact the operation of the Trust or any of its Funds. Accordingly, no loss contingency has been recorded in the balance sheet and the amount of loss, if any, cannot be reasonably estimated at this time.

NOTE 9 – LEGAL PROCEEDINGS

The Trust and certain principals of the Sponsor have been named as defendants (along with several other parties) in a consolidated class action lawsuit filed in the United States District Court for the Southern District of New York, styled In re ProShares Trust Securities Litigation, Civ. No. 09-cv-6935. The complaint, as amended, alleged that the defendants violated Sections 11 and 15 of the Securities Act of 1933 by including untrue statements of material fact and omitting material facts in the Registration Statement for one or more ProShares ETFs and allegedly failing to adequately disclose the Funds’ investment objectives and risks. The six Funds of the Trust named in the complaint were ProShares Ultra Silver, ProShares UltraShort Gold, ProShares Ultra Gold, ProShares UltraShort DJ-UBS Crude Oil, ProShares Ultra DJ-UBS Crude Oil and ProShares UltraShort Silver. On September 10, 2012, the District Court issued an Opinion and Order dismissing the class action lawsuit in its entirety. On December 17, 2012, the plaintiffs filed an appeal brief to the United States Court of Appeals for the Second Circuit. Oral argument on plaintiffs’ appeal before the United States Court of Appeals for the Second Circuit was held on May 2, 2013. The Trust believes the complaint is without merit and that the anticipated outcome will not adversely impact the operation of the Trust or any of its Funds. Accordingly, no loss contingency has been recorded in the balance sheet and the amount of loss, if any, cannot be reasonably estimated at this time.