The ProShares UltraShort QQQ (Ticker: QID) seeks daily investment results, before fees and expenses, that correspond to TWICE (200%) the INVERSE (opposite) of the daily performance of the NASDAQ-100. The index includes 100 of the largest domestic and international nonfinancial companies listed on the Nasdaq Stock Market based on market capitalization. The index reflects companies across major industry groups including computer hardware and software, telecommunications, retail/ wholesale trade and biotechnology. It does not contain securities of financial companies including investment companies. The NASDAQ-100 Index is calculated under a modified capitalization-weighted methodology.