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Author:Sultanum, Bruno 

Journal Article
Inefficiency in a Simple Model of Production and Bilateral Trade

We study a simple model of over-the-counter trade with production. We characterize the equilibrium, and we show that the equilibrium is always inefficient, independent of how the trade surplus is split among trade participants. We argue that this is due to a double hold-up problem that it is at the core of models used to study trade in over-the-counter markets. Finally, we show an example, which we interpret as a limiting case of the general model where the inefficiency vanishes.
Economic Quarterly , Issue 3Q , Pages 137-151

Briefing
Preventing Bank Runs

Banking can be defined as the business of maturity transformation, or "borrowing short to lend long." Economists and policymakers have long viewed banking as inherently unstable, that is, prone to runs. This Economic Brief reviews the intuition and theory behind bank runs and the most popular proposed solutions. It also explores new research suggesting that runs might be prevented by creating a new, low-cost type of deposit contract that eliminates the incentive to run.
Richmond Fed Economic Brief , Issue March

Working Paper
The Cost of Information in the Blockchain: A Discussion of Routledge and Zetlin-Jones

The volatility of crypto currencies hinders their ability to be media of exchange or stores of value, leading to the implementation of exchange-rate pegs in an attempt to stabilize these currencies. This strategy has been used by crypto currencies such as US Dollar Tether, Steem Backed Dollar and TrueUSD; and was previously adopted in countries such as Brazil, Mexico and Argentina. However, an exchangerate peg is vulnerable to speculative attacks if it is not 100% backed by reserves, as discussed in Obstfeld (1996). Using insights from the bank-run literature, Routledge and Zetlin-Jones ...
Working Paper , Paper 21-02

Working Paper
Dealer costs and customer choice

We introduce a model to explain how an increase in intermediation costs leads to structural changes in the corporate bond market. We state three facts on corporate bond markets after the Dodd-Frank act: (1) an increase in customer liquidity provision through prearranged matches, (2) a paradoxical decrease in measured illiquidity, and (3) an increase in the illiquidity component on the yield spread. Investors take longer to finish a trade and require higher illiquidity premium even though measured illiquidity decreased. We introduce a search and matching model which explains these facts. It ...
Working Paper , Paper 23-13

Journal Article
Sovereign CDS Market: The Role of Dealers in Credit Events

In this paper, we study the credit default swaps (CDS) position of the main dealers in the CDS market close to credit events of sovereign countries. We focus on the credit events of three countries that have faced significant financial distress in the past decade: Argentina, Venezuela, and Ukraine. After introducing the historical background of each country, we find that CDS dealers, defined as the top ten traders of CDS in their respective countries, tend to sell sovereign CDS (hold more negative or less positive positions) when yields/CDS spreads go up. This finding suggests that dealers ...
Economic Quarterly , Volume 3Q , Pages 97-113

Briefing
Essentiality of Money: A Historical Perspective

In this article, I explore the historical development of the concept of essentiality of money, as well as monetary theory more broadly. I begin by introducing the concept of money and its role in facilitating economic activity. I delve into the evolution of monetary theory, starting with the classical theory and the marginal revolution and moving to the division between microeconomics and macroeconomics. Then I discuss the microfoundation revolution in macroeconomics and the debate over the essentiality of money. Finally, I examine the New Keynesian School (which uses reduced-form tools to ...
Richmond Fed Economic Brief , Volume 24 , Issue 01

Working Paper
Preventing Bank Runs

Diamond and Dybvig (1983) is commonly understood as providing a formal rationale for the existence of bank-run equilibria. It has never been clear, however, whether bank-run equilibria in this framework are a natural byproduct of the economic environment or an artifact of suboptimal contractual arrangements. In the class of direct mechanisms, Peck and Shell (2003) demonstrate that bank-run equilibria can exist under an optimal contractual arrangement. The difficulty of preventing runs within this class of mechanism is that banks cannot identify whether withdrawals are being driven by ...
Working Paper Series , Paper WP-2014-19

Journal Article
CDS Auctions: An Overview

We discuss the historical background of the credit default swap (CDS) market, why CDS auctions were developed, and the most recent literature. We describe the auction rules using the Toys R Us auction as an example. Furthermore, we discuss the theoretical and empirical results presented in Chernov et al. (2013). Empirically, we extend their data to include more recent CDS auctions. Our results support their findings that dealers have incentive to manipulate the auction price downward when the net open interest is positive. Finally, we use novel dealer-level CDS positions to support Chernov et ...
Economic Quarterly , Issue 2Q , Pages 105-132

Working Paper
Asset Issuance in Over-the-Counter Markets

We model asset issuance in over-the-counter markets. Investors buy newly issued assets in a primary market and trade existing assets in a secondary market, where both markets are over the counter. We show that the level of asset issuance and its efficiency depend on how investors split the surplus in secondary market trade. If buyers get most of the surplus in secondary market trade, then sellers do not have incentives to participate in the primary market in order to intermediate assets and the economy has a low level of assets. On the other hand, if sellers get most of the surplus, buyers ...
Working Paper , Paper 17-13

Briefing
GameStop, AMC and the Self-Fulfilling Beliefs of Stock Buyers

The recent stock market gyrations of GameStop and AMC Entertainment illustrate that companies' fates can sometimes hinge on self-fulfilling beliefs. Pessimistic expectations can raise the specter of bankruptcy, while optimistic expectations can allow for survival and eventual success. We show how it is sometimes possible for small coalitions of buyers — such as those that formed on the online forum Reddit — to tip the balance in favor of an optimistic scenario. By doing so, a coalition can reap large profits and fundamentally improve a company's prospects.
Richmond Fed Economic Brief , Volume 21 , Issue 13

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