I am a resident in Asia and been (day)trading US stocks through a HK broker with 0% capital gain tax. I also have a Delaware LLC for some non-US related import business, which is not subject to any US tax. Now, if I open a brokerage account in HK using this LLC to daytrade US stocks (I am trading from outside of US as a non-US resident), will I be subject to US tax? What do you think