Dark Markets
                     I will explain how the opaqueness of some financial markets, 
                      particularly over-the-counter markets, affects the valuation 
                      of assets and investment behavior. Investors in some markets 
                      are often unaware of the "going price," and must 
                      search for suitable trading counterparties. The degree of 
                      market opaqueness is indicated by variation in execution 
                      prices across different trades at a given time, and the 
                      impact of supply shocks and information releases on price 
                      behavior over time. I will review some modeling approaches 
                      and some of the empirical evidence.
                    
                    Darrell Duffie has been on the finance faculty at Stanford 
                    since receiving his Ph.D. from Stanford in 1984. He has authored 
                    books and research articles on topics in finance and related 
                    fields. 
                    His research interests include incomplete security markets; 
                      derivatives markets; financial risk management; capital 
                      asset pricing theory; preference theory under uncertainty; 
                      security design; term structures of interest rates; credit 
                      risk, systemic risk in capital markets, valuation of corporate 
                      and sovereign debt, swaps, and credit derivatives. 
                    His books include: 
                      Security Markets: Stochastic Models, 1988,
                      Futures Markets, 1989,
                      Dynamic Asset Pricing Theory 2001,
                      Credit Risk, with Kenneth J. Singleton, 2003;