Highly volatile exchange rates don't come cheap in economies with large liability dollarization ratios. Therefore, central banks do not follow a unique objective of price stability but its preferences include an implicit exchange rate objective. This gives us reasons to believe that the Peruvian...

The reduction of macroeconomic vulnerability in emerging markets is at the core of the research agenda. In this context, liability dollarization plays a vital role and its implications have been addressed in the literature via a “financial accelerator” mechanism. After allowing for different...

Financial dollarization creates design problems for economic policy as increases the level of financial vulnerability. However, countries with high levels of dollarization have done almost nothing to reduce it. In this paper we study two ways to do it and we evaluate them within a model that...

Although most CIS and East Asian countries are de jure classified as free floaters, they de facto pursue (tight) dollar pegs. This paper emphasizes dollar denomination of short-term and long-term payment flows as reasons for exchange rate stabilization. Based on the analysis of ifcompetitive...

Emerging markets are often exposed to sudden stops of capital inflows. What are the effects of monetary policy in such an environment? To answer this question, the paper proposes a model with the typical elements of an emerging market economy. Credit frictions generate balance sheet effects,...

We study the aggregate effects of a social security reform in a large overlapping generations model where markets are incomplete and households face uninsurable idiosyncratic income shocks. We depart from the previous literature by assuming that, because of lack of commitment in the credit...

The theory of asset pricing, which takes its roots in the Arrow-Debreu model (Theory of value [1959, chap. 7]), the Black and Sholes formula (1973) and Cox and Ross (1976 a and b), has been formalized in a general framework by Harrison and Kreps (1979), Harrison and Pliska (1979) and Kreps...

This paper studies effects of two classes of borrowing constraints, collateral- and income-based, on wealth accumulation, portfolio behavior and on precautionary motives. We examine the sensitivity of solutions to tightness of constraints, education level, and preference parameters. The models...

The large wealth and consumption inequality in the U.S. is usually attributed to two market frictions: debt constraints and incomplete markets. Recent literature has argued that debt constraints are the critical friction while market incompleteness plays only a secondary role. We evaluate the...

We examine the optimal consumption and portfolio choice of an investor having an initial wealth endowment and an uncertain stream of income from non-traded assets. The income stream is not spanned by traded assets, and the investor is not allowed to borrow against future income, so the financial...