@ramiroh9 --- (a) Non Resident Aliens are taxed only on US sourced/connected income -- so foreign income is not taxed by the USA and therefore no losses / gains are recognized either;
(b) Non-Resident Aliens file their tax return ( covering US income ) using form 1040-NR or 1040-NR/EZ ---- none of these forms are supported by TurboTax. SprinTax is TurboTax partner in this. You can also use the services of Tax professionals familiar with international filings.
Whcih country are you from? Are you in the USA? When did you enter the USA and with what visa? Are you working here ? Do you have Tax ID ( SSN or ITIN )? Are you married and if so to US citizen/Resident or ?
