Hi, I'm trying to find a site that offers historical implied volatility charts that can be fed into Ninjatrader. E.G. A chart that details the average IV of atm options of a security such as AAPL or a currency pair over a set time period. I think ivolatility offers these sort of charts but from what I can tell it is not possible to connect Ninjatrader to ivolatility. I don't mind paying for such data but I'd prefer not to have to open a brokerage account and post a minimum account balance simply to access their historical data for backtesting. I imagine this would be the case with the likes of IB. Can anyone please offer any assistance? All replies appreciated. Thanks for your time.