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• Support

  I have something that does not work. Help me.

  Request New Features
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  @buyers_are_back Hi,

  Regarding your first question, yes, that is correct. As we look more into the past, it is more difficult to get data for companies which have been index members but don't exist anymore, for example. This is also related to your second question - symbols with '~1' are in almost all cases, the same companies with the same ticker symbol, but with different ISIN (International Securities Identification Number). For instance, SanDisk company ("NAS:SNDK") was standalone public company until 2016, when Western Digital acquired SanDisk. In 2025 company spinoff, SanDisk re-emerged on the Nasdaq as an independent public company, with the same ticker as it was ('SNDK'), but with different ISIN (considered as different company).
  Those symbol pairs, should not have an intersection in membership ("is_liquid" field should not be 1.0 for both at the same time), otherwise it could be mistake by provider.

• Strategy help

  I have a strategy that doesn't work, please help improve it.

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  @svyable Hi,
  sorry for late answer, no we don't provide that option, but we will think about adding it in future.

• General Discussion

  A place to talk about whatever you want.

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  M

  Thanks for bringing this up. I had a similar question when looking through the example. From what I understand, it can seem forward-looking at first because of how the data is prepared and the model is trained. The important part is whether the prediction at each point is based only on information that would have been available at that time. If that's the case, then it may not be true look-ahead bias, just a backtesting implementation detail. That said, it's definitely worth double-checking because data leakage in machine learning strategies can be surprisingly easy to miss and can make results look much better than they would be in live trading.

• News and Feature Releases

  Announcements regarding our community

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  @support thanks!!!