Loading histories
AgenaTrader loads historical prices for active instruments from the data feed provider's server. Sometimes the system may need some time to proceed.
If this is the case, you can check the progress of the data download at the bottom right of your screen. The progress bar indicates the current state and quantity of bars requested. Please note that as long as this bar remains yellow, you may see only empty charts.
Historical data are necessary when using the following tools:
- Chart
- Indicators in the scanner ("bars required" for loading)
- Indicators in the chart ("bars required" for evaluation)
- Strategies in the Strategy Escort ("bars required" for loading)
- Strategies in the chart ("bars required" for evaluation)
History Overflow
This problem may in fact occur with most data feeds.
The Interactive Brokers data feed may cause significant problems.
IB only permits 60 historical queries within 10 minutes. This means that if you have a List Chart Group with 20 instruments and 3 time frames per instrument, the amount of queries is already exhausted. If you then change the time frame of a chart after the limit has been reached, the chart remains empty since Interactive Brokers will no longer deliver historical data.
Barchart offers historical packages with 100, 200 and 500 requests – but a package of 100 queries is also quickly exhausted.
TeleTrader offers packages of 500, 750 and 1000 simultaneous historical requests. This will allow you to open a wide array of instruments with different time frames simultaneously.
It should be noted that every data feed has its own limitations. Once you have exceeded the maximum number of history requests with IB you must wait 10 minutes to load new histories. Barchart, on the other hand, may require up to one hour to load new historical prices.