Can a Cross-Margin Account Be Liquidated Completely?

Yes, a cross-margin account can be liquidated completely. Since all positions share the entire account balance as collateral, a severe market movement against one or more positions can deplete the entire equity, leading to the liquidation of all open positions and a complete loss of the account balance.

Can an Options Seller Be Liquidated?
What Happens to a Trader’s Entire Account Balance under a Cross Margin System during a Liquidation?
What Is the Main Drawback of Using Cross Margin for High-Risk Trades?
How Is the Equity in the Account Calculated for Margin Purposes?
Explain the Difference between ‘Isolated Margin’ and ‘Cross Margin’
Can a Trader Use Unrealized Profit from Another Position to Meet a Margin Call?
What Is the Difference between an Equity Margin Call and a Portfolio Margin Call?
How Does a “Cross-Margin” Account Differ from an “Isolated-Margin” Account during Liquidation?