James Chen, CMT is an expert trader, investment adviser, and global market strategist. Option margin is the collateral (cash or securities) an investor must deposit before writing or selling options ...

Forbes contributors publish independent expert analyses and insights. Making wealth creation easy, accessible and transparent. A margin call happens when a broker demands an investor bring their ...

Also known as initial calls, this type of margin call occurs when an investor cannot meet the minimum margin requirement for a purchase as stipulated by Regulation T. This provision states that an ...