Trading Halt

A trading halt is imposed by the exchange, usually due to the dissemination of news that might impact a stock’s price.

Priority

If there are several orders competing for a stock at the same price, a priority determines when one of these orders will be filled before any other at this price. Priority is based on the time at which the order is received into the system.

Private Placement

The private offering of a security to a small group of buyers. Resale of the security is limited. See Best Efforts and Bought Deal Underwriting.

Triple Witching

the third Friday of March, June, September and December is the day when index futures, index future options, and certain stock options all expire. Triple Witching Fridays are know for high volatility.