In anticipation of extreme market volatility Wall Street firms have begun tightening the noose on traders and investors. Firms are increasing intraday margins that can require investors and traders to come up with more cash in order to increase their trading positions.

If investors cannot meet the additional margin requirements then investors are required to sell out their positions to satisfy the margin.

If they do not their brokerage firms will do it for them with or without their knowledge or awareness. All adding to the turmoil already being experienced in U. S. markets.

If investors are not sure if their account is impacted should contact their brokerage firm for information on any margin changes that might affect them.  Some firms provide email or alert notifications of such changes to their clients.