Wall Street giants' trading businesses show a tale of two extremes: JPMorgan (JPM.US) expects Q3 results to soar, while Bank of America (BAC.US) warns of a slowdown.

Zhito Finance APP has learned that JPMorgan (JPM.US) expects third-quarter trading revenue and investment banking fees to grow, in sharp contrast to the warning issued earlier this week by Bank of America (BAC.US).