i found a thinkscript that allows you to "export" historical data from thinkorswim. it takes
a bit of work to get a valdi csv file but a little automation will fix that.
https://usethinkscript.com/threads/...a-from-thinkorswim-for-external-analysis.507/
a bit of work to get a valdi csv file but a little automation will fix that.
https://usethinkscript.com/threads/...a-from-thinkorswim-for-external-analysis.507/