(from Ninja Trader)
"5X Margin Increase for CME Equity Indices, Interest Rates & Energies.
Due to the risk presented by significant market swings, intraday margins for the CME Equity Indices, Interest Rates and Energies have been increased 5X until further notice.
Several CME Group markets including the Equity Indexes have reached lock limit. Lock limits are used by exchanges to regulate market volatility.
It is important to use proper risk management when trading during volatile market conditions. Following the recent large market swings, we strongly encourage maintaining a higher than normal amount of margin per contract."
"5X Margin Increase for CME Equity Indices, Interest Rates & Energies.
Due to the risk presented by significant market swings, intraday margins for the CME Equity Indices, Interest Rates and Energies have been increased 5X until further notice.
Several CME Group markets including the Equity Indexes have reached lock limit. Lock limits are used by exchanges to regulate market volatility.
It is important to use proper risk management when trading during volatile market conditions. Following the recent large market swings, we strongly encourage maintaining a higher than normal amount of margin per contract."