摘要: An official notification from an options clearing firm to the writer of an option that the current option holder has exercised and, therefore, the writer must produce the underlying security. This may[阅读全文:]
摘要: A combination order whereby two separate orders are entered on the same security. The execution of one order cancels the other.
For example, if you purchased shares of XYZ at $5, you could enter[阅读全文:]
摘要: A trading system that is not regulated as an exchange, but is a venue for matching the buy and sell orders of its subscribers. Alternative trading systems are gaining popularity around the world and a[阅读全文:]