摘要:

A special instruction used when placing a trade to indicate how long an order will remain active before it is executed or expires. Time-in-force options allow traders to be more specif[阅读全文]

摘要:

This is the actual price of a security at that moment in time. Most prices of securities that are displayed on various websites are delayed quotes. These quotes are usually delayed fro[阅读全文]

摘要:

When a system relays information to a user at a speed that is near instantaneous or has a short delay from when the event actually occurred. Online brokerages often provide a real-time[阅读全文]