A set of estimated allocations Nest(X1) through Nest(Xk) of portfolio positions to products X1 through Xk may be determined, with products X1 through Xk including portfolio products and spread-traded products based on some of the portfolio products. Utilizing the set of estimated allocations, an optimized liquidation cost LCopt may be designated. Data indicating at least a portion of a performance bond based on the optimized liquidation LCopt may be output.