We introduce a model of the banking sector that formally incorporate a buffer function of capital. Heterogeneous banks choose their portfolio risk, bank size, and capital holdings. Banks voluntarily hold equity when the buffer effect against the risk of default outweighs the cost advantages of...

This paper uses high-frequency data for publicly-listed Japanese manufacturing firms over the period 2000 to 2010 to show that a greater reliance on foreign market sales increases the conditional volatility of firms' stock returns. The two margins of global engagement we consider, namely,...