what market maker is "L" in ameritrades thinkorswim level 2 quotes? note: this FAQ seems quite out of date: https://tlc.thinkorswim.com/center/howToTos/thinkManual/Miscellaneous/Exchange-Codes
Thanks it is pretty new (2020), and I had never heard of it. https://www.investopedia.com/long-term-stock-exchange-ltse-5077275 Which brokers or persons use this exchange regularly?
"Which brokers or persons use this exchange regularly?" It's gonna sound like a corny answer but everyone via NMS.