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Date/Time: Thu, 23 Jan 2025 19:07:54 +0000



Post From: Faulty Data Received From Interactive Brokers.

[2017-06-28 02:03:44]
Sierra Chart Engineering - Posts: 104368
The price for SVXY at the end of the day today was 162.10 in IB's TWS (please see attached screenshot file) and the the price for the same security in Sierra Charts is 168.20, a $7 difference!! And the price chart pattern is completely different (Please see attached screenshot file).

This is what we see from the Sierra Chart Historical Data Service:
http://www.sierrachart.com/image.php?Image=1498615435138.png

Sierra Chart has no control over the data provided by Trader Workstation assuming that is where the data came from. What you see is what was sent by Trader workstation.


We recommend using the Sierra Chart Historical Data Service and re-downloading the data:
Interactive Brokers Trading Service: Using Sierra Chart Historical Data

And also when I was downloading the price from IB today after their daily maintenance at 17:00 PM, I received a lot of errors in the log such as "Array is unallocated" and Window Exception error (Please see also the log file attached). I have NEVER seen these errors before when downloading price data. I had to shut down Sierra Charts and relaunch it. When I relaunched Sierra Charts, the charts got updated but with the wrong prices.
These issues are caused by a bug in your custom study. Refer to help topic 17:
Sierra Chart Unexpectedly Shutting Down | Memory Errors | Unusual Software Problems | Exception Errors | Freezing of User Interface

Actually thinking about this, the data problem is very likely caused by the bug in your custom study which is causing the exceptions because once you encounter an exception, the state of Sierra Chart can no longer be trusted and it is not stable.
Sierra Chart Support - Engineering Level

Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy:
https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation

For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service:
Sierra Chart Teton Futures Order Routing
Date Time Of Last Edit: 2017-06-28 02:12:38