We study the effects of a conventional monetary expansion, quantitative easing, and operation twist on corporate bond yields and spreads. These policies are simulated as shocks to the Treasury yield curve, and the impulse response functions of corporate yields and spreads to shocks are computed...

We propose a blended approach which combines identification via heteroskedasticity with the widely used methods of sign restrictions, narrative restrictions, and external instruments.Since heteroskedasticity in the reduced form can be exploited to point identify a set of orthogonal shocks, its...