A computer-based method for generating a program for hedging guaranteed benefits of a set of variable annuity (VA) contracts, including automatically generating interpreted and compiled contract value projection code; generating vectorized integrated scenario sets including arbitrage-free interest rate, hedging instrument, and VA fund values based on financial market data and regression and cointegration analysis of the VA funds and user-selected hedging instruments; multi-threaded vectorized calculating of present value PVGij of projected VA benefit guarantee cash flows for each VA contract i for each vectorized integrated scenario set j; calculating of differences of PVGij to determine sensitivities to financial parameters (“Greeks”) for each contract; calculating of present value PVAij of projected asset cash flows for each asset i for each vectorized integrated scenario set j; calculating of differences of PVAij to determine sensitivities to financial parameters (“Greeks”) for each asset; and, presenting of summary and detail asset and liability Greeks.