The U.S. economy has recently experienced two, seemingly unrelated, phenomena: a large increase in post-retirement life expectancy and a major expansion in securitization and shadow banking activities. We argue they are intimately related. Agents rely on financial intermediaries to save for...

It depends what we want to measure. Most literature has focused on observed flow of savings (per-period savings as fraction of GDP), which has declined persistently since 1980. Even though this decline means that fewer funds are available for investment in each period, it does not follow that...