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Working Paper
The Adoption of Non-Rival Inputs and Firm Scope
Custom software is distinct from other types of capital in that it is non-rival---once a firm makes an investment in custom software, it can be used simultaneously across its many establishments. Using confidential US Census data, we document that while firms with more establishments are more likely to invest in custom software, they spend less on it as a share of total capital expenditure. We explain these empirical patterns by developing a model that incorporates the non-rivalry of custom software. In the model, firms choose whether to adopt custom software, the intensity of their ...
Working Paper
Market Concentration in Fintech
This paper discusses concentration in consumer credit markets with a focus on fintech lenders and residential mortgages. We present evidence that shows that concentration among fintech lenders is significantly higher than that for bank lenders and other nonbank lenders. The data also show that the overall concentration in mortgage lending has declined between 2011 and 2019, driven mostly by a reduction in concentration among bank lenders. We present a simple model to show that changes in lender financial technology (interpreted as improvements in quality of loan services) explain more than ...
Working Paper
The Adoption of Non-Rival Inputs and Firm Scope
Custom software is distinct from other types of capital in that it is non-rival---once a firm makes an investment in custom software, it can be used simultaneously across its many establishments. Using confidential US Census data, we document that while firms with more establishments are more likely to invest in custom software, they spend less on it as a share of total capital expenditure. We explain these empirical patterns by developing a model that incorporates the non-rivalry of custom software. In the model, firms choose whether to adopt custom software, the intensity of their ...
Working Paper
The Firm Size-Leverage Relationship and Its Implications for Entry and Business Concentration
Larger firms (by sales or employment) have higher leverage. This pattern is explained using a model in which firms produce multiple varieties, acquire new varieties from their inventors, and borrow against the future cash flow of the firm with the option to default. A variety can die with a constant probability, implying that firms with more varieties (bigger firms) have a lower variance of sales growth and, in equilibrium, higher leverage. In this setup, a drop in the risk-free rate increases the value of an acquisition more for bigger firms because of their higher leverage: They can (and ...
Discussion Paper
Has Market Concentration in U.S. Manufacturing Increased?
The increasing dominance of large firms in the United States has raised concerns about pricing power in the product market. The worry is that large firms, facing fewer competitors, could increase their markups over marginal costs without fear of losing market share. In a recently published paper, we show that although sales of domestic firms have become more concentrated in the manufacturing sector, this development has been accompanied by the entry and growth of foreign firms. Import competition has lowered U.S. producers’ share of the U.S. market and put smaller, less efficient domestic ...
Discussion Paper
How Bank Reserves Are Distributed Matters. How You Measure Their Distribution Matters Too.
Changes in the distribution of banks’ reserve balances are important since they may impact conditions in the federal funds market and alter trading dynamics in money markets more generally. In this post, we propose using the Lorenz curve and Gini coefficient as a new approach to measuring reserve concentration. Since 2013, concentration, as captured by the Lorenz curve and the Gini coefficient, has co-moved with aggregate reserves, decreasing as aggregate reserves declined (such as in 2015-18) and increasing as aggregate reserves increased (such as at the onset of the COVID-19 pandemic).
Discussion Paper
How Competitive are U.S. Treasury Repo Markets?
The Treasury repo market is at the center of the U.S. financial system, serving as a source of secured funding as well as providing liquidity for Treasuries in the secondary market. Recently, results published by the Bank for International Settlements (BIS) raised concerns that the repo market may be dominated by as few as four banks. In this post, we show that the secured funding portion of the repo market is competitive by demonstrating that trading is not concentrated overall and explaining how the pricing of inter-dealer repo trades is available to a wide range of market participants. By ...
Working Paper
Economic Diversity and the Resilience of Cities
We develop a framework to assess how economic shocks affect local labor markets and worker welfare, with a focus on city-level economic diversity. Using detailed worker flow data across cities, sectors, and occupations, we construct theory-consistent welfare measures. Our approach combines a dynamic discrete choice model with a dual representation that captures both direct effects and the insurance value of local economic diversity. Applied to French labor markets, we find that diversification dampens the effect of negative shocks: both job-to-job moves and net inflows decline less in diverse ...
Working Paper
The Adoption of Non-Rival Inputs and Firm Scope
Custom software is distinct from other types of capital because it is non-rival—once a firm invests in it, the software can be used simultaneously across its many establishments. Using confidential U.S. Census data, we document that while firms with more establishments are more likely to invest in custom software, they spend less on it as a share of total capital expenditures. We explain these empirical patterns by developing a model that incorporates the non-rivalry of software and the firm’s choice of scope. Firms choose whether to adopt custom software, the intensity of their ...
Discussion Paper
How Does Market Power Affect Fire-Sale Externalities?
An important role of capital and liquidity regulations for financial institutions is to counteract inefficiencies associated with “fire-sale externalities,” such as the tendency of institutions to lever up and hold illiquid assets to the extent that their collective actions increase financial vulnerabilities. However, theoretical models that study such externalities commonly assume perfect competition among financial institutions, in spite of high (and increasing) financial sector concentration. In this post, which is based on our forthcoming article, we consider instead how the effects ...