SENIOR ECONOMIST

FEDERAL RESERVE BOARD

carlos.ramirez@frb.gov

CV - FRB WEBSITE - SSRN- Google Scholar

RESEARCH INTERESTS

Networks, Asset Pricing, and Financial Intermediation.

WORKING PAPERS

Regulating Financial Networks: A Flying Blind Problem [PDF, May 4 2021]

I study the problem of regulating a network of interdependent financial institutions when a network-conscious policymaker is uncertain about its susceptibility to contagion. I show how uncertainty can compound market equilibrium inefficiencies and alter the scope of welfare-improving interventions. I further demonstrate how optimal interventions depend on a delicate balance between the network architecture and the knowledge available to policymakers.


Firm Networks and Asset Returns [PDF, Internet Appendix, February 1 2018]

Changes in the propagation of idiosyncratic shocks along firm networks are important to understanding variations in asset returns. When calibrated to match key features of supplier-customer networks in the United States, an equilibrium model in which investors have recursive preferences and firms are interlinked via enduring relationships generates long-run consumption risks. Additionally, the model matches cross-sectional patterns of portfolio returns sorted by network centrality, a feature unaccounted for by standard asset pricing models.

WORK IN PROGRESS

Trade and Price Dynamics in the Overnight Tri-Party Repo Market with Mark E. Paddrik

Funding Networks and Asset Returns with Filip Zikes

Interbank Networks and Banking Regulation with Zafer Kanik

JOURNAL PUBLICATIONS

Imperfect Information Transmission from Banks to Investors: Macroeconomic Implications [PDF] [Journal of Monetary Economics, Volume 118, March 2011, pages 87-98] (joint with Oksana Leukhina and Nicolás Figueroa)

Our goal is to elucidate the interaction of banks’ screening effort and strategic information production in loan-backed asset markets using a general equilibrium framework. Asset quality is unobserved by investors, but banks may purchase error-prone ratings. The premium paid on highly rated assets emerges as the main determinant of banks’ screening effort. The fact that rating strategies reflect banks’ private information about asset quality helps keep this premium high. Conventional regulatory policies interfere with this decision margin, thereby reducing signaling value of high ratings and exacerbating the credit misallocation problem. We propose a tax/subsidy scheme that induces efficiency.

OTHER PUBLICATIONS

The Dynamics of the U.S. Overnight Triparty Repo Market [FED Note, OFR Brief] (joint with Mark E. Paddrik and Matthew J. McCormick)

Using supervisory transaction-level data, this note sheds light on the dynamics of the overnight segment of the U.S. triparty repo market by documenting key features of the behavior of its participants and its intraday dynamics.