OHLC Bars

[PabloC]

Hello,

I have some questions related to bar prices.

1) Are Bars OHLC prices calculated by Ninjatrader using Provider's Ask and Bid Prices, or ther are directly got from Provider? (with provider meaning Broker/Data Feed)
2) How is "Last" Price Calculated?
3) Prices drown on Charts correspond to Ask, Bid or other prices?

Regards
Pablo

[NinjaTrader_Ben]

Hello,

1) Are Bars OHLC prices calculated by Ninjatrader using Provider's Ask and Bid Prices, or ther are directly got from Provider? (with provider meaning Broker/Data Feed)
>>The OHLC is determined differently for different types of bars. Historical minute and larger bar OHLC's are provided by the data feed. However the OHLC's are built on the fly when storing minute and larger bar data in real time. With Tick bars the OHLC's are determined by NT using the user inputs. This link my help:

http://www.ninjatrader-support.com/HelpGuideV6/HowDoesNinjaTraderBuildChartBars.html

2) How is "Last" Price Calculated?
>>It is not calculated it is fed by the data feed and it is the last price that the instrument was traded at.

3) Prices drown on Charts correspond to Ask, Bid or other prices?
>>They are built on the last traded price. Please see the link above.

[PabloC]

Ben, thanks four you answer. Regarding historical data, the concept is clear. However in real time, I still can't find out how OHLC bars are determined. I understand Ninjatrader calculates (for example) minute bars on the fly by using real time data, but I would like to know the calculation is made. Thanks

[NinjaTrader_JoshP]

PabloC,

I am not sure what you mean "calculation". In real-time NinjaTrader just displays whatever information it is given by your data provider. On a 1 minute chart, when it receives a tick with a timestamp outside of that 1 minute, it knows the bar has closed and will solidify the OHLC for that bar and start a new one for the next 1 min.