Список проголосовавших за комментарий "dmbes, Ага, нашел вроде. Вот это имеется в виду? "<ul><li>An existing account must have at least USD 110,000 (or USD equivalent) in Net Liquidation Value to be eligible to upgrade to a Portfolio Margin account (in addition to being approved for uncovered option trading). Existing customers may apply for a Portfolio Margin account on the Account Type page in Account Management at any time and your account will be upgraded upon approval. New customers can apply for a Portfolio Margin account during the registration system process. It should be noted that if your account drops below USD 100,000 you will be restricted from doing any margin-increasing trades. Therefore if you do not intend to maintain at least USD 100,000 in your account, you should not apply for a Portfolio Margin account."</li></ul>"