Ergo, it says nothing about "Maximum orders". It is saying you will be charged pro-data fees if you exceed 390 on options.
OP, are you going to exceed 390 options orders per day? It doesn't say number of options, it says number of ORDERS.
390 Orders on average per day over a month is a option exchange rule. When you pass it, you are tagged as Pro-customer vs Priority customer. This has nothing to do with equity trading or market data fees. It has to do with exchange routing fees. I can't tell if that reddit post is referring to options or equities but options makes more sense.
Please read again, thank you very much! https://support.tastyworks.com/supp...is-the-390-professional-orders-rule-390-rule-
He was referring to stocks, it has nothing to do with that 390 options rule. Guys, my question is not about TD Ameritrade, focus, focus, Thanks a lot!
That 390 orders rule only applies option trading, tastyworks is actually wrong! TD ameritrade 390 orders rule is an internal rule.
Then let's start at the beginning with the basics. What are you looking to trade? Stocks, Options, ETFs, Futures or Options on Futures?
Then do a Google search with the following search string. "TD ameritrade 390 trades". This is all yer going to come up with that does not have "Reddit" as a source. https://www.sec.gov/rules/sro/nyseamex/2010/34-61629.pdf