how to achieve this to avoid big "down" in stock price when using Meta to analysis? Say, company A has just split its shares, but I want the chart to be split-excluded?

im pretty new to meta. thanks.

Ask your data vendor if they can supply non-split-adjusted data.  For example, we provide unadjusted close prices in the otherwise unused Open Interest field on US stock data.

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www.premiumdata.net

thanks for the quick reply. i thought it can be achieved by the software itself. i'll go back and check with the vendor.