Central bank large-scale asset purchases, particularly the purchase of corporate bonds of nonfinancial firms, can induce a misallocation of resources through their heterogeneous effect on firms cost of capital. First, we analytically demonstrate the mechanism in a static model. We then evaluate the misallocation of resources induced by corporate bond buys and the associated output losses in a calibrated heterogeneous firm New Keynesian DSGE model. The calibrated model suggests misallocation

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... cts from corporate bond buys can be large enough to make them less effective than government bond buys, which is not the case without accounting for misallocation effects.