I am using IQFeed, and most of the data works, but for some symbols, the prices are kind of messed up, please see the attached chart, it's NVDA 1-min...
the price on 4/12 is around 12.xx, but on 4/11, the price is around 25.xx
so I see this kind of weird chart?! I can't do any backtesting on these symbols...
I see similar results in other basic symbols or futures, such as FDAX.
Any suggestion to diagnose this problem? I just downloaded & started to use NT + IQFeed about one week ago.
Thanks.
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