This movie is a classic not just for traders. But here is a very interesting read.

https://www.businessinsider.com/an-oral-history-of-trading-places-2013-6?fb_action_ids=10151533727039022&fb_action_types=og.recommends&fb_source=other_multiline&action_object_map=&action_type_map=&action_ref_map=

Landis did remember one thing incorrectly. Anyone who ever visited the commodities exchanges in the old World Trade Center knows they were housed in one of the small buildings that was less than 10 stories tall. The scene with the Duke brothers looking down on the trading floors was filmed in that visitors center.