The financial definition for Value at risk model (VaR):
Procedure for estimating the probability of portfolio losses exceeding some specified proportion based on a statistical analysis of historical market price trends, correlations, and volatilities.
Asset pricing model A model for determining the required or expected rate of return on an asset. Related: Capital asset pricing model and arbitrage pricing theory.
Binomial option pricing model
Binomial option pricing model An option pricing model in which the option can assume one of only two possible, discrete values in the next time period for each value that it can take on in the preceding time period.