Retirement adequacy is estimated using a 1995 United States sample of households. Based on mean lognormal portfolio projections and current contribution rates, 52% of households are adequately prepared for retirement. Based on pessimistic projections, only 42% of households are adequately prepared. A regression of the ratio of projected wealth to needs at retirement shows that adequacy increases with stock share (mean projection) and the impact increases with time until retirement. With pessimistic projections, there is no significant relationship between stock share and the adequacy ratio. Planned retirement age and household spending behavior are each significantly related to the adequacy ratio.