I started on a student visa in Aug 2018. I'm still on a student visa and am a non-resident alien for tax purposes until Dec 2022. I have been in the US for the entire 2019, 2020, 2021 except for a short 3-week visit outside the US.
About the exempt status, Robinhood never considered me exempt in 2019 and 2020. In 2021, for which I received the form a week back, Robinhood considered me exempt.
In 2021, they asked me to fill out a W8-BEN. I don't remember them asking for it in 2019 and 2020 although they had me as a non-resident alien in their record.
