@kimsam SPX charts with old and new versions. Old version works perfectly, schwab fetches SPX option chain ( I think it is not fetching spy, you can verify in code). The new version, auto convert is false, price multiplier is 1, connect symbol is SPX. The fetch of SPX fails. Can you check why ? my guess is due to return code of 400, the API call in the latest version of code might have an issue. I checked with NQ similarly, I see the same issue. NDX also same issue.