ProShares UltraPro Short QQQ, AltC Acquisition, and Direxion Daily TSLA Bull 2X Shares are the three Mid Cap stocks to watch today, according to MarketBeat’s stock screener tool. Mid-cap stocks are shares of companies with a market capitalization roughly between $2 billion and $10 billion, used by investors to classify firms by size and risk profile. These companies had the highest dollar trading volume of any Mid Cap stocks within the last several days. Get alerts:ProShares UltraPro Short QQQ (SQQQ)ProShares UltraPro Short QQQ (the Fund) seeks daily investment results, which corresponds to three times the inverse of the daily performance of the NASDAQ-100 Index (the Index). It intends to effect a merger, capital stock exchange, asset acquisition, stock purchase, reorganization, or other business combination with one or more businesses.