ProShares Ultra Dow30 (NYSEARCA:DDM – Get Free Report) fell 0.2% during mid-day trading on Tuesday . The company traded as low as $81.91 and last traded at $82.43. 416,673 shares changed hands during trading, an increase of 35% from the average session volume of 307,523 shares. The stock had previously closed at $82.60. ProShares Ultra […]