If the company is a U.S. company, you would have to come to the U.S. to seek judgement for the losses you incurred, if allowed by law. But playing the stock market is almost considered legalized gambling and it is expected that you could lose your investment. You can contact the company to find out which law firm is handling their bankruptcy and file a claim but you will most likely be one of hundreds, possibly thousands, of creditors that the company owes money too. If I was you, I would chalk this up as a hard lesson learned in wheeling and dealing of the stock market and be a little more cautious in your future dealings.