Securitization and financial markets: the implications for interest rate pass-through

The transmission of monetary policy rates to lending rates is viewed as a crucial path of monetary policy. As an integral part of the financial system and the recent financial crisis, securitized assets have the potential to affect the interest rate pass-through process and monetary policy effectiveness. This paper aims to investigate the influence of securitization on the transmission of policy rate changes to lending rates and how rate transmission has changed since the recent financial crisis. Emphasis is placed on differences among the mortgage, consumer credit and business loan securitization markets and between agency and private-label securitization transactions.

The empirical framework is an error-correction model augmented to directly measure the influence of securitization. Monetary policy effectiveness is measured by the size and speed of transmitted policy rate changes to lending rates. An efficiency measure of relative adjustment accounts for differences in the size of long-run responses across loan markets and changes in efficiency from securitization within loan markets.

The size and speed of interest rate pass-through tend to increase with securitization. Liquidity, capital relief and funding from securitization help to make lending rates more responsive. Increases in pass-through with securitization are less in the consumer credit and business loan markets after the recent financial crisis relative to before the crisis. In contrast, mortgage markets tend to have larger pass-through after the financial crisis. Differences in rate transmission after the recent financial crisis point to the role on nonbanks in consumer credit and business loans and asset purchase programs of the Federal Reserve in mortgage markets. Securitization tends to make the adjustment process more efficient, and gains in efficiency from securitization are larger after the financial crisis.

A key contribution of the study differentiates securitization across markets and types to determine the effects on the interest rate pass-through process. The results show that increases in the efficiency of the adjustment process from securitization tend to be greater in mortgage markets and for all private-label securitized assets. These findings have implications for proposed government-sponsored entity (GSE) reform to reduce the role of GSEs in the housing market, promote private-label mortgage credit and strengthen securitization deals.