Mark Cuban doesn’t and neither do I. However, I would like to echo Cuban’s sentiments in case you don’t read his blog regularly:
Is a single research pen mightier than the P&L, Balance Sheet and Statement of Cash Flows? that is the question you must ask yourself.
If you think the answer is yes, and you are an investor, you probably don't know enough about the companies you own stock in to stay in the market.
If you think the answer is yes, and you are a trader, hopefully you have gotten to the point of knowing you are just winging it anyway, and you win some and lose some.
If you are the CEO of a public company and you think the answer is yes. Please email me with the stock symbol of your company. I want to short it.