Earnings season kicks off this week with the big banks first out of the gate. All six of the US lenders are forecast to show increases in trading revenue. That's the focus of today's Wall Street beat today.Joining us is Allison Williams, director of research for the Global Strategy Team at Bloomberg Intelligence. And the big banks set the tone in a lot of ways, don't they. But you have a lot of things to watch between trading revenue and M&A at the big investment banks, but also net interest income.Let's st ...