We develop a model to explore the asset pricing implications of firms being buyers of last resort for their own stocks. Those with more ability to repurchase shares when prices drop far below fundamental value (i.e., less financially constrained firms) should have lower short-horizon return...

We introduce "lack-of-recall" of past transactions as an alternative assumption to anonymity in a model where trade is centralized. In environments where there is an intertemporal lack-of-double-coincidence of wants problem and lack-of-commitment, lack-of-recall can give rise to monetary...

We study the asset pricing implications of learning in an environment in which the true model of the world is a multivariate one, but agents update only over the class of simple univariate models. Thus, if a particular simple model does a poor job of forecasting over a period of time, it is...

In environments with no commitment and with a need for intertemporal trade, bounded recall is shown to be a sufficient friction for a receipt system (fiat money) to lead to improved allocations in an otherwise frictionless Walrasian model. The absence of other frictions makes price determination...

Using recent advances in the econometrics literature, we disentangle from high frequency observations on the transaction prices of a large sample of NYSE stocks a fundamental component and a microstructure noise component. We then relate these statistical measurements of market microstructure...

In 2005-2008, over a dozen put warrants traded in China went so deep out of the money that they were almost certain to expire worthless. Nonetheless, each warrant was traded more than three times each day at substantially inflated prices. This bubble is unique in that the underlying stock prices...

In 2005-08, over a dozen put warrants traded in China went so deep out of the money that they were certain to expire worthless. Nonetheless, each warrant was traded nearly three times each day at substantially inflated prices. This bubble is unique, because the underlying stock prices make the...

Using recent advances in the econometrics literature, we disentangle from high frequency observations on the transaction prices of a large sample of NYSE stocks a fundamental component and a microstructure noise component. We then relate these statistical measurements of market microstructure...