ProShares UltraShort 20+ Year Treasury (NYSEARCA:TBT – Get Free Report) shot up 3.6% on Monday . The company traded as high as $38.37 and last traded at $38.18. 605,482 shares changed hands during trading, a decline of 79% from the average session volume of 2,945,777 shares. The stock had previously closed at $36.86. ProShares UltraShort […]