The "daily Call" From Option Alpha: Options Trading | Stock Options | Stock Trading | Trading Online

Hey everyone, Kirk here again at Option Alpha and welcome back to the daily call. Today, I want to show you where to get reliable historical market data. This is going to be for options data and also for general stock or equity data. I think the first thing I’ll say with this is the keyword here is “reliable.” There’s a lot of data providers out there and a lot of data sources. One thing that we learned in building our back-testing software and our trade optimization software on Option Alpha is that not all data is the same. Even though two people or two different data providers might say that they’re providing the same data, we’ve often found that lots of inconsistencies, it's not like millions and millions of inconsistencies, but a lot of inconsistencies among different data providers on end of day versus open of the day versus middle of the today, tick intervals, volatility metrics and volatility numbers, Deltas, Thetas and sometimes just flat out missing data or incomplete data. I think the key here is th