"In thinly traded markets for heterogenous, durable goods, such as housing, intermediaries may play especially important roles. Using a unique micro-level dataset of housing transactions in Los Angeles from 1988-2008 and a novel research design, we identify and measure the importance of two very...

Historical anecdotes of new investors being drawn into a booming asset market, only to suffer when the market turns, abound. While the role of investor contagion in asset bubbles has been explored extensively in the theoretical literature, causal empirical evidence on the topic is virtually...