WorldCat Identities

Martin, Alberto 1974-

Works: 38 works in 195 publications in 1 language and 1,047 library holdings
Genres: Academic theses 
Roles: Author
Classifications: HC10, 338.542
Publication Timeline
Most widely held works by Alberto Martin
Managing credit bubbles by Alberto Martin( )

15 editions published between 2014 and 2015 in English and held by 142 WorldCat member libraries worldwide

We study a dynamic economy where credit is limited by insufficient collateral and, as a result, investment and output are too low. In this environment, changes in investor sentiment or market expectations can give rise to credit bubbles, that is, expansions in credit that are backed not by expectations of future profits (i.e. fundamental collateral), but instead by expectations of future credit (i.e. bubbly collateral). During a credit bubble, there is more credit available for entrepreneurs: this is the crowding-in effect. But entrepreneurs must also use some of this credit to cancel past credit: this is the crowding-out effect. There is an "optimal" bubble size that trades off these two effects and maximizes long-run output and consumption
Sovereign debt markets in turbulent times : creditor discrimination and crowding-out effects by Fernando Broner( )

12 editions published in 2013 in English and held by 94 WorldCat member libraries worldwide

In 2007, countries in the euro periphery were enjoying stable growth, low deficits, and low spreads. Then the financial crisis erupted and pushed them into deep recessions, raising their deficits and debt levels. By 2010, they were facing severe debt problems. Spreads increased and, surprisingly, so did the share of the debt held by domestic creditors. Credit was reallocated from the private to the public sectors, reducing investment and deepening the recessions even further. To account for these facts, we propose a simple model of sovereign risk in which debt can be traded in secondary markets. The model has two key ingredients: creditor discrimination and crowding-out effects. Creditor discrimination arises because, in turbulent times, sovereign debt offers a higher expected return to domestic creditors than to foreign ones. This provides incentives for domestic purchases of debt. Crowding-out effects arise because private borrowing is limited by financial frictions. This implies that domestic debt purchases displace productive investment. The model shows that these purchases reduce growth and welfare, and may lead to self-fulfilling crises. It also shows how crowding-out effects can be transmitted to other countries in the euro zone, and how they may be addressed by policies at the European level
Theoretical notes on bubbles and the current crisis by Alberto Martin( )

16 editions published between 2010 and 2011 in English and held by 92 WorldCat member libraries worldwide

We explore a view of the crisis as a shock to investor sentiment that led to the collapse of a bubble or pyramid scheme in financial markets. We embed this view in a standard model of the financial accelerator and explore its empirical and policy implications. In particular, we show how the model can account for: (i) a gradual and protracted expansionary phase followed by a sudden and sharp recession; (ii) the connection (or lack of connection!) between financial and real economic activity and; (iii) a fast and strong transmission of shocks across countries. We also use the model to explore the role of fiscal policy. - Bubbles ; financial accelerator ; credit constraints ; financial crisis ; pyramid schemes
Sovereign risk and secondary markets by Fernando Broner( )

15 editions published between 2006 and 2007 in English and held by 92 WorldCat member libraries worldwide

Conventional wisdom says that, in the absence of sufficient default penalties, sovereign risk constrains credit and lowers welfare. We show that this conventional wisdom rests on one implicit assumption: that assets cannot be retraded in secondary markets. Once this assumption is relaxed, there is always an equilibrium in which sovereign risk is stripped of its conventional effects. In such an equilibrium, foreigners hold domestic debts and resell them to domestic residents before enforcement. In the presence of (even arbitrarily small) default penalties, this equilibrium is shown to be unique. As a result, sovereign risk neither constrains welfare nor lowers credit. At most, it creates some additional trade in secondary markets. The results presented here suggest a change in perspective regarding the origins of sovereign risk and its remedies. To argue that sovereign risk constrains credit, one must show both the insufficiency of default penalties and the imperfect workings of secondary markets. To relax credit constraints created by sovereign risk, one can either increase default penalties or improve the workings of secondary markets
Banks, government bonds, and default : what do the data say? by Nicola Gennaioli( )

8 editions published in 2014 in English and held by 86 WorldCat member libraries worldwide

We analyze holdings of public bonds by over 20,000 banks in 191 countries, and the role of these bonds in 20 sovereign defaults over 1998-2012. Banks hold many public bonds (on average 9% of their assets), particularly in less financially-developed countries. During sovereign defaults, banks increase their exposure to public bonds, especially large banks and when expected bond returns are high. At the bank level, bondholdings correlate negatively with subsequent lending during sovereign defaults. This correlation is mostly due to bonds acquired in pre-default years. These findings shed light o
Economic growth with bubbles by Alberto Martin( )

14 editions published in 2010 in English and held by 84 WorldCat member libraries worldwide

We develop a stylized model of economic growth with bubbles. In this model, financial frictions lead to equilibrium dispersion in the rates of return to investment. During bubbly episodes, unproductive investors demand bubbles while productive investors supply them. Because of this, bubbly episodes channel resources towards productive investment raising the growth rates of capital and output. The model also illustrates that the existence of bubbly episodes requires some investment to be dynamically inefficient: otherwise, there would be no demand for bubbles. This dynamic inefficiency, however, might be generated by an expansionary episode itself
Enforcement problems and secondary markets by Fernando Broner( )

14 editions published in 2007 in English and held by 82 WorldCat member libraries worldwide

There is a large and growing literature that studies the effects of weak enforcement institutions on economic performance. This literature has focused almost exclusively on primary markets, in which assets are issued and traded to improve the allocation of investment and consumption. The general conclusion is that weak enforcement institutions impair the workings of these markets, giving rise to various inefficiencies. But weak enforcement institutions also create incentives to develop secondary markets, in which the assets issued in primary markets are retraded. This paper shows that trading in secondary markets counteracts the effects of weak enforcement institutions and, in the absence of further frictions, restores efficiency
Financial reforms and capital flows : insights from general equilibrium by Alberto Martin( )

14 editions published in 2012 in English and held by 79 WorldCat member libraries worldwide

As a result of debt enforcement problems, many high-productivity firms in emerging economies are unable to pledge enough future profits to their creditors and this constrains the financing they can raise. Many have argued that, by relaxing these credit constraints, reforms that strengthen enforcement institutions would increase capital flows to emerging economies. This argument is based on a partial equilibrium intuition though, which does not take into account the origin of any additional resources that flow to high-productivity firms after the reforms. We show that some of these resources do not come from abroad, but instead from domestic low-productivity firms that are driven out of business as a result of the reforms. Indeed, the resources released by these low-productivity firms could exceed those absorbed by high-productivity ones so that capital flows to emerging economies might actually decrease following successful reforms. This result provides a new perspective on some recent patterns of capital flows in industrial and emerging economies
The long and the short of it : sovereign debt crises and debt maturity by Raquel Fernandez( )

13 editions published between 2014 and 2015 in English and held by 62 WorldCat member libraries worldwide

We present a simple model of sovereign debt crises in which a country chooses its optimal mix of short and long-term debt contracts subject to standard contracting frictions: the country cannot commit to repay its debts nor to a specific path of future debt issues, and contracts cannot be made state contingent. We show that in order to satisfy incentive compatibility the country must issue short-term debt, which exposes it to roll-over crises and inefficient repayments. We examine two policies--restructuring and reprofiling--and show that both improve ex ante welfare if structured correctly. Key to the welfare results is the country's ability to choose its debt structure so as to neutralize any negative effects resulting from redistribution of payments across creditors in times of crises
The international transmission of credit bubbles : theory and policy by Jaume Ventura( )

10 editions published in 2015 in English and held by 58 WorldCat member libraries worldwide

We live in a new world economy characterized by financial globalization and historically low interest rates. This environment is conducive to countries experiencing credit bubbles that have large macroeconomic effects at home and are quickly propagated abroad. In previous work, we built on the theory of rational bubbles to develop a framework to think about the origins and domestic effects of these credit bubbles. This paper extends that framework to two-country setting and studies the channels through which credit bubbles are transmitted across countries. We find that there are two main channels that work through the interest rate and the terms of trade. The former constitutes a negative spillover, while the latter constitutes a negative spillover in the short run but a positive one in the long run. We study both cooperative and noncooperative policies in this world. The interest-rate and terms-of-trade spillovers produce policy externalities that make the noncooperative outcome suboptimal
Monetary Policy for a Bubbly World by Vladimir Asriyan( )

7 editions published between 2016 and 2019 in English and held by 45 WorldCat member libraries worldwide

We propose a model of money, credit and bubbles, and use it to study the role of monetary policy in managing asset bubbles. In this model, bubbles pop up and burst, generating fluctuations in credit, investment and output. Two key insights emerge from the analysis. First, the growth rate of bubbles, which is driven by agents' expectations, can be set in real or in nominal terms. This gives rise to a novel channel of monetary policy, as changes in the inflation rate affect the real growth rate of bubbles and their effect on economic activity. Crucially, this channel does not rely on contract incompleteness or price rigidities. Second, there is a natural limit on monetary policy's ability to control bubbles: the zero-lower bound. When a bubble crashes, the economy may enter into a liquidity trap, a regime in which agents shift their portfolios away from bubbles - and the credit that they sustain - to money, reducing intermediation, investment and growth. We explore the implications of the model for the conduct of "conventional" and "unconventional" monetary policy, and we use the model to provide a broad interpretation of salient macroeconomic facts of the last two decades
The macroeconomics of rational bubbles : a user's guide by Alberto Martin( )

7 editions published in 2018 in English and held by 40 WorldCat member libraries worldwide

This paper provides a guide to macroeconomic applications of the theory of rational bubbles. It shows that rational bubbles can be easily incorporated into standard macroeconomic models, and illustrates how they can be used to account for important macroeconomic phenomena. It also discusses the welfare implications of rational bubbles and the role of policy in managing them. Finally, it provides a detailed review of the literature
Adverse selection, credit, and efficiency : the case of the missing market by Alberto Martin( Book )

8 editions published between 2008 and 2011 in English and held by 15 WorldCat member libraries worldwide

We analyze a standard environment of adverse selection in credit markets. In our environment, entrepreneurs who are privately informed about the quality of their projects need to borrow in order to invest. Conventional wisdom says that, in this class of economies, the competitive equilibrium is typically inefficient. We show that this conventional wisdom rests on one implicit assumption: entrepreneurs can only access monitored lending. If a new set of markets is added to provide entrepreneurs with additional funds, efficiency can be attained in equilibrium. An important characteristic of these additional markets is that lending in them must be unmonitored, in the sense that it does not condition total borrowing or investment by entrepreneurs. This makes it possible to attain efficiency by pooling all entrepreneurs in the new markets while separating them in the markets for monitored loans
Understanding bubbly episodes by Vasco M Carvalho( Book )

7 editions published in 2012 in English and held by 14 WorldCat member libraries worldwide

Over the last two decades U.S. aggregate wealth has fluctuated substantially. Against the backdrop of the Great Recession, the effects of these boom-and-bust cycles have come to dominate academic and policy discussions. How can we explain these fluctuations in wealth? Why are these fluctuations associated with changes in consumption, investment and output? In this note, we argue that answers to these questions entail the addition of two ingredients to existent macroeconomic models: rational bubbles and financial frictions. We explain why each of these building blocks is crucial to understand recent events and how they can be seamlessly integrated in standard models
Sovereign default, domestic banks and financial institutions by Nicola Gennaioli( Book )

5 editions published in 2010 in English and held by 13 WorldCat member libraries worldwide

We build a model where sovereign defaults weaken banks' balance sheets because banks hold sovereign bonds, causing private credit to decline. Stronger financial institutions boost default costs by amplifying these balance-sheet effects. This yields a novel complementarity between public debt and domestic credit markets, where the latter sustain the former by increasing the costs of default. We document three novel empirical facts that are consistent with our model's predictions: public defaults are followed by large private credit contractions; these contractions are stronger in countries where banks hold more public debt and financial institutions are stronger; in these same countries default is less likely
International capital flows and credit market imperfections : a tale of two frictions by Alberto Martin( Book )

6 editions published between 2010 and 2012 in English and held by 13 WorldCat member libraries worldwide

The financial crisis of 2007-08 has underscored the importance of adverse selection in financial markets. This friction has been mostly neglected by macroeconomic models of financial frictions, however, which have focused almost exclusively on the effects of limited pledgeability. In this paper, we fill this gap by developing a standard growth model with adverse selection. Our main results are that, by fostering unproductive investment, adverse selection: (i) leads to an increase in the economy's equilibrium interest rate, and; (ii) it enerates a negative wedge between the marginal return to investment and the equilibrium interest rate. Under financial integration, we show how this translates into excessive capital inflows and endogenous cycles. We also explore how these results change when limited pledgeability is added to the model. We conclude that both frictions complement one another and argue that limited pledgeability exacerbates the effects of adverse selection
Fiscal multipliers and foreign holdings of public debt by Fernando Broner( )

2 editions published in 2018 in English and held by 9 WorldCat member libraries worldwide

This paper explores a natural connection between fiscal multipliers and foreign holdings of public debt. Although fiscal expansions can raise domestic economic activity through various channels, they can also have crowding-out effects if the resources used to acquire public debt reduce domestic consumption and investment. Thus, these crowding-out effects are likely to be weaker when public debt is purchased by foreigners. We test this hypothesis on (i) post-war US data and (ii) data for a panel of 17 advanced economies from the 1980's to the present. To do so, we assemble a novel database of public debt holdings by domestic and foreign creditors for a large set of advanced economies. We combine this data with standard measures of fiscal policy shocks and show that, indeed, the size of fiscal multipliers is increasing in the share of public debt held by foreigners. In particular, the fiscal multiplier is smaller than one when the foreign share is low, such as in the U.S. in the 1950's and 1960's and Japan today, and larger than one when the foreign share is high, such as in the U.S. and Ireland today
The financial transmission of housing bubbles : evidence from Spain by Alberto Martin( Book )

2 editions published in 2018 in English and held by 4 WorldCat member libraries worldwide

What are the effects of a housing bubble on the rest of the economy? We show that if firms and banks face collateral constraints, a housing bubble initially raises credit demand by housing firms while leaving credit supply unaffected. It therefore crowds out credit to non-housing firms. If time passes and the bubble lasts, however, housing firms eventually pay back their higher loans. This leads to an increase in banks' net worth and thus to an expansion in their supply of credit to all firms: crowding-out gives way to crowding-in. These predictions are confirmed by empirical evidence from the recent Spanish housing bubble. In the early years of the bubble, non-housing firms reduced their credit from banks that were more exposed to the bubble, and firms that were more exposed to these banks had lower credit and output growth. In its last years, these effects were reversed
Essays on markets and contracts by Alberto Martin( )

1 edition published in 2005 in English and held by 3 WorldCat member libraries worldwide

On the role of retaliation in trade agreements( )

1 edition published in 2007 in English and held by 2 WorldCat member libraries worldwide

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Alternative Names
Martin, Alberto Miguel 1974-

English (177)