IQfeed data / AB charts (1 minute)

Data Sources
1

Using WIN 11 with AB 7.00.0

A lot has been written about spikes in IQfeed data. I have 2 other issues

  1. Looking at 1 minute charts, the last bar time stamp is 13:00 regardless of the selection I make in preferences / Intrday. Start Time and End Time of Interval give me the same time stamp

  2. Looking at chart for IBM of Sept. 23 from 12:15 to end of day and comparing IQfeed with Think or Swim, the chars look quite different. See images. The cursor is on 12:40 for both charts

image
image427×320 18.1 KB

image
image545×430 14.5 KB

Appreciate any feedback

2

Those charts are significantly different. You posted this on Sun 9 Oct 2025.

I think that there's a significant difference in the way the charts are constructed in terms of periodicty, timezone offset or something else.

There's just not enough information in your screen shot to help any further.

One chart states "??/21/25" 3:53pm and the other "9/23/25" 12:48pm.

Are you really comparing the same security/timeframe?
What is the security you are charting?

You really need to provide exact details of the exact security, exchange, PC timezone etc. for us to help further.

1 Like
3

File -> Setup Database -> Intraday -> Set Trading Hours "End" to 12:59

This is assuming the bar denotes the "Start" of the interval. For example, a 12:00 bar would represent 12:00:00 to 12:00:59.