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Johannes Voit German Savings Banks Association, Berlin What The Einstein Year Did Not Discuss: Brownian Motion And Financial Markets Among Einstein's four 1905 papers, the one describing Brownian motion received comparatively little attention during the Einstein year 2005. (Geometric) Brownian motion is an idealized model for financial time series. Based on Brownian motion, an exact solution can be found for the pricing and hedging of options - perhaps the most important commercial application of any of Einstein's ideas. In my talk, I will explain these concepts as well as the deviations of real financial market data from Brownian motion, and their consequences for options. I will also discuss modern topics of risk management such as operational risk as well as the importance of Brownian motion and the contributions which physicists can make in those areas.