there is a whole lot more than just that missing, this is footnote 2 on chartexchange
“2 Not every exchange reports the daily short volume free of charge (or at all), so total volume in this table will be less than the daily volume at the top of the page. Volume for trades during regular trading hours.”
so it is the best possible representation of the data available
there is a whole lot more than just that missing, this is footnote 2 on chartexchange
“2 Not every exchange reports the daily short volume free of charge (or at all), so total volume in this table will be less than the daily volume at the top of the page. Volume for trades during regular trading hours.”
so it is the best possible representation of the data available