Improving the participation of smallholder mango farmers in modern retail channels in Indonesia

Demand for fresh fruits and vegetables in Indonesia has been continuously growing as the result of increasing incomes, high growth of the urban population, and modern retail development. The growth of modern retail chains in Indonesia in the last few decades has intrigued some development experts and practitioners because it had been expected to provide greater opportunities for linking small farmers to high value globalized market chains. The modern private sector would, it was hoped, incorporate small producers with the goal of both securing supply and contributing to poverty reduction. However, in terms of mangoes, previous studies have indicated that only a very small proportion of local production is marketed to modern retail chains and/or exported. The main objective of this study is to identify the factors affecting farmers' participation in modernizing retail channels. The study randomly selected 636 mango farmers from the two main mango production zones in Indonesia, West Java and East Java provinces. The study shows that an expansion of the modernized retail segment has not always benefitted local producers, especially smallholder farmers. It is demonstrated that smallholder farmer participation could be higher when the level of commercialization in the market is high and/or retail procurement was already more modernized. Factors that increase farmer capacity to participate in the modern retail chain are irrigation, farm tools, and infrastructure. To increase smallholder farmer participation, the study suggests a policy of encouraging enforcement of quality standards at wholesale markets, technical assistance to farmers relating to value-adding postharvest activities, and improvements in rural infrastructure.     

PORTFOLIO OPTIMIZATION AND STOCHASTIC VOLATILITY ASYMPTOTICS

We study the Merton portfolio optimization problem in the presence of stochastic volatility using asymptotic approximations when the volatility process is characterized by its timescales of fluctuation. This approach is tractable because it treats the incomplete markets problem as a perturbation around the complete market constant volatility problem for the value function, which is well understood. When volatility is fast mean‐reverting, this is a singular perturbation problem for a nonlinear Hamilton–Jacobi–Bellman partial differential equation, while when volatility is slowly varying, it is a regular perturbation. These analyses can be combined for multifactor multiscale stochastic volatility models. The asymptotics shares remarkable similarities with the linear option pricing problem, which follows from some new properties of the Merton risk tolerance function. We give examples in the family of mixture of power utilities and also use our asymptotic analysis to suggest a “practical” strategy that does not require tracking the fast‐moving volatility. In this paper, we present formal derivations of asymptotic approximations, and we provide a convergence proof in the case of power utility and single‐factor stochastic volatility. We assess our approximation in a particular case where there is an explicit solution.     

Second order multiscale stochastic volatility asymptotics: stochastic terminal layer analysis and calibration

Multiscale stochastic volatility models have been developed as an efficient way to capture the principal effects on derivative pricing and portfolio optimization of randomly varying volatility. The recent book by Fouque et al. (Multiscale Stochastic Volatility for Equity, Interest-Rate and Credit Derivatives, 2011) analyzes models in which the volatility of the underlying is driven by two diffusions – one fast mean-reverting and one slowly varying – and provides a first order approximation for European option prices and for the implied volatility surface, which is calibrated to market data. Here, we present the full second order asymptotics, which are considerably more complicated due to a terminal layer near the option expiration time. We find that to second order, the implied volatility approximation depends quadratically on log-moneyness, capturing the convexity of the implied volatility curve seen in data. We introduce a new probabilistic approach to the terminal layer analysis needed for the derivation of the second order singular perturbation term, and calibrate to S&P 500 options data.     

State contract law and the use of accounting information in debt contracts

Review of Accounting Studies - This paper examines the relation between state contract law and the use of accounting information in debt contracts. Contract theory suggests that balance sheet based...     

Is financial reporting shaped by equity markets or by debt markets? An international study of timeliness and conservatism

We hypothesize debt markets—not equity markets—are the primary influence on “association” metrics studied since Ball and Brown (1968 J Account Res 6:159–178). Debt markets demand high scores on timeliness, conservatism and Lev’s (1989 J Account Res 27(supplement):153–192) R ², because debt covenants utilize reported numbers. Equity markets do not rate financial reporting consistently with these metrics, because (among other things) they control for the total information incorporated in prices. Single-country studies shed little light on debt versus equity influences, in part because within-country firms operate under a homogeneous reporting regime. International data are consistent with our hypothesis. This is a fundamental issue in accounting.     

Choosing the right instrument

This paper analyses the optimal choice of second-best optimal environmental policies. Using a partial equilibrium model, the paper first reconfirms the well-known result that the existence of a double dividend (in its weak definition) favours environmental policy instruments which maximise tax revenues for a given improvement in environmental quality. Additional revenues can be used to reduce the distortion of existing taxes such as taxes on labour and capital income. Without uncertainty, environmental taxes and auctioned permits are equally appropriate. In the presence of uncertainty, however, the optimal choice of taxes or tradable permits depends on the relative magnitudes of the marginal environmental damage and the marginal benefit from consuming a polluting good. In the second part, the paper, therefore, analyses how the revenue capacity affects the optimal choice of environmental policy instruments in the presence of uncertainty. The paper shows that the first-best choice rule between price and quantity regulation (Weitzman, 1974) remains valid in a second-best world with distortionary taxation.