We show that the introduction of a large asset permanently affects the prices of existing assets in a market. Using data from 254 initial public offerings (IPOs) in 22 emerging markets, we find that portfolios that covary highly with the IPO experience a decline in prices relative to other portfolios during the month of the issue. The effects are stronger when the IPO is issued in a market that is less integrated internationally and when the IPO is bigger. This evidence is consistent with the idea that shocks to asset supply have a significant effect on asset prices.

We document a novel channel through which coordinated trading exerts externalities on financial markets. We study the impact of a financial advisory firm that recommends frequent reallocations between equity and bond funds to Chilean pension investors. The recommendations generate large and coordinated fund flows that are exacerbated by the strategic complementarity arising from fund trading restrictions. The recommendations generate significant price pressure and increased volatility in the stock market. In response to these large trade flows, pension funds shift their allocations to more liquid securities. Our findings suggest that giving retirement savers unconstrained reallocation opportunities can destabilize financial markets. Received March 11, 2016; editorial decision July 8, 2017 by Editor Itay Goldstein.

We study the effects of going public using a unique panel of firms in 16 European countries for which we observe financial data before and after initial public offering (IPO) attempts. We compare completed and withdrawn IPO attempts. We instrument the decision to complete the IPO using prior market returns. After instrumenting, we isolate a positive causal effect of going public on profitability. We also find a post-IPO expansion in sales per employee, subsidiaries, and countries in which firms operate. Overall, our results are consistent with going public relaxing financial constraints and inducing a shift in strategy towards increased commercialization.