Interactive Brokers Group, Inc. (IBKR) is one of the stocks most watched by Zacks.com visitors lately. So, it might be a good idea to review some of the factors that might affect the near-term performance of the stock.Over the past month, shares of this company have returned -6.8%, compared to the Zacks S&P 500 composite's -0.4% change. During this period, the Zacks Financial - Investment Bank industry, which Interactive Brokers falls in, has gained 1.3%. The key question now is: What could be the stock's f ...