Guys and gals Iâm new to CL trading. If I merge CL contracts in Ninja trader, NinjaTrader adjust the back months price data and you can continue this for more contracts going back, to construct a continuous chart. For those of you familiar with Ninjatrader - What is the error of this method on the prior months CL data? How does a daily chart of crude have its price derived? What are some accurate data vendors for a continuous CL contract data, including continuous CL Globex data?