Trading Block: Earnings today include: JPMorgan Chase, Delta Air Lines. Legislation to impose financial transactions tax introduced. Clinton aims "Wall Street" tax at Flash Boys, not banks.

Odd Block: Calls trade in ConAgra Foods Inc. (CAG), calls trade in HollyFrontier Corp (HFC) and calls trade in Credit Suisse Group (CS).

Mail Block: Listener questions and comments

• Question from Dmitry: What happens to Leaps for tickers that get delisted before expiration?
• Question from Mark Davis: Hello, I am a new listener. There was a mention of using covered calls to generate a "dividend". I am having trouble tracking down more information on this. Being still new to all of this, I am hoping to get a clearer picture of how it works. How far out on expiration should I look at to figure the stock price? Thanks!

Around the Block: Earnings on Friday include Citigroup, PNC Financial Services, US Bancorp, Wells Fargo