One day my lawyer told me to pay a big attention to the legal form of the company I invest.
Generally, there are limited and unlimited liability companies. In limited one, in case of bankruptcy I can lose 100% of my investment. In unlimited one it can be much more than 100% as responsibility is not limited.
I suppose that the things mentioned above are related to the investing to private companies only. I'm wondering if somebody have ever seen unlimited liabilities at the stock exchange where investor can lose much more than the price paid for the actions?