"Nuke" Order

The "Nuke" Order is a specific order type to market close all positions across all exchanges. It functionally is a type of routed reduce only order, meaning a "Nuke" order will close ALL existing orders.

The Nuke Order, though routed, should be used carefully. The orders will execute immediately at market, and thus if the position is large enough your pricing could be negatively impacted compared to closing via a TWAP, Iceberg or Limit Order.