3 ms·

Can you please prove this or stop saying it? Quantopian's data is from Nanex and is free of survivorship bias, as I mentioned to you in another comment.

• SirLJ 9y ago
  Yes I can prove it, go and request historical data for symbols like AA, HTZ and you'll see yourself
  • thedufer 9y ago
    Last time you listed symbols that were missing dsacco showed that they were not. Why should we believe these?