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Apple Rockets Up the Rankings: August at TradeStation

Apple Rockets Up the Rankings: August at TradeStation

August brought upsets to TradeStation's rankings as clients shifted attention to big technology companies. Major exchange-traded funds lost interest. Apple (AAPL), which didn't even make the Top 10 in June or July, was the busiest stock at TradeStation last month. The...

Greek of the Week: Gamma

Greek of the Week: Gamma

This is the second installment of a four-part series about options Greeks that will appear on Market Insights between now and Labor Day week. Last week, we looked at delta. Delta measures how much an option changes in price when the underlying stock or ETF fluctuates....

Volatility and the Dog Days of Summer

Volatility and the Dog Days of Summer

Earlier today, we highlighted the spreading risk of global debt and currency problems. But what does it mean for the chart most of us really care about, the S&P 500? Here are some thoughts. First, the U.S. index is in the midst of its longest weekly winning streak...

Dorsey crashes the Top 10: June at TradeStation

Dorsey crashes the Top 10: June at TradeStation

June was another big month for social-media at TradeStation, with Twitter (TWTR) crashing the Top 10 list of busiest symbols. Jack Dorsey's micro-blogging platform rose 10 notches to No. 3 among our clients' most active stocks. The surge came as TWTR soared to new...