Why do we have a market? Basically: it allows society to make decisions about the value of things—with the wisdom of the crowd. The stock market is how we (as people) decide what to make and how to make it. Misc. Questions About the Market Misc. Financial Market Questions Knowledge price Random Walk Hypothesis Brownian Motion Arbitrage Pricing Derivative Pricing options CAPM Stochastic Discount Factor GARCH ETF accounting price stock indicies VWAP short selling darkpool fundamental investing Second-Level Thinking stock market survey OTC markets NBBO LiquidNet