I am looking at ameritrade time and sales, exchange codes "H" .... I don't know what this is.
and it doesn't say in their file:
https://tlc.thinkorswim.com/center/howToTos/thinkManual/Miscellaneous/Exchange-Codes
and it doesn't say in their file:
https://tlc.thinkorswim.com/center/howToTos/thinkManual/Miscellaneous/Exchange-Codes