Publications (economics)

Abstract: We examine propagation of a small unexpected supply shock through a production network and the role financial constraints play in its transmission. Using data on almost all Turkish supplier-customer links, we exploit the heterogeneous impact of an unexpected import-tax increase for identification. We find that this relatively minor shock had a non-trivial economic impact on exposed firms and propagated downstream through affected suppliers. Importantly, we show that low-liquidity firms amplified its transmission.

Abstract: Using U.S. interstate banking deregulations, we identify the effect of market-entering banks’ prior industry exposures on the manufacturing sector growth in the new state that they enter. We create banking integration and industry specialization measures that consider both direct (state-pair) as well as indirect (tertiary-state) links created by expanding multi-bank holding company networks. First, consistent with the economic mechanism we have in mind, we observe that banks’ home state's industrial specialization is positively correlated with their lending specialization when participating to in-state as well as out-of-state syndicated loan markets. Then, focusing on industry value added at the state-industry-level, we find evidence consistent with the positive impact of market-entering banks’ prior exposure to a sector on the growth of that industry in the newly-entered state. The observed effect is larger when the state-pair-level discrepancy in sector-specialization is greater. Our findings are robust and hold in capital-related components of industry-level value added. We observe that the above results are more prominent in sectors that are more external finance dependent, have lower amounts of physical capital that can be pledged as collateral, generate more valuable patents, are durables-producers, and have a higher risk. Our findings suggest that a bank integration channel helps shape states’ industrial landscape.

Abstract: Using methods from machine learning we show that fundamentals from simple exchange rate models (PPP or UIRP) or Taylor-rule based models lead to improved exchange rate forecasts for major currencies over the floating period era 1973--2014 at a 1-month forecast horizon which beat the no-change forecast. Fundamentals thus contain useful information and exchange rates are forecastable even for short horizons. Such conclusions cannot be obtained when using rolling or recursive OLS regressions as used in the literature. The methods we use -- sequential ridge regression and the exponentially weighted average strategy, both with discount factors -- do not estimate an underlying model but combine the fundamentals to directly output forecasts.

Abstract: We study portfolio allocation and characterize contracts issued by firms in the international financial market when investors exhibit ambiguity aversion and perceive ambiguity in assets issued in foreign locations. Increases in the variance of their risky production process cause firms to issue assets with a higher variable payment (equity). Hikes in investors' perceived ambiguity have the opposite effect, and lead to less risk-sharing. Entrepreneurs from capital-scarce countries finance themselves relatively more through debt than equity. They are thus exposed to higher volatility per unit of consumption. The expected returns on capital invested in capital-scarce countries may also be lower. Such results do not hold in the absence of ambiguity, that is, when investors only perceive risk. New facts uncovered from cross-country firm-level data are consistent with our model.

Abstract: We test for the trade finance channel of exports controlling for the bank credit channel. We examine whether shocks to the letter of credit costs affect exports using Turkey’s Basel II adoption of July 2012 as a quasi-natural experiment. With data for 16,662 Turkish exporters shipping 2,888 different products to 158 countries, we find that the share of letter of credit-based exports decreases (increases) when the associated counterparty risk-weights increase (decrease) after Basel II adoption. However, growth of firm-product-country level exports remains unaffected. Trade (letter of credit) financing might have a lesser role than what the previous literature suggests.

Abstract: Using Benford's law, we find evidence supporting the hypothesis that countries at times misreport their economic data strategically. We group countries with similar economic conditions and find that for countries with fixed exchange rate regimes, high negative net foreign asset positions, negative current account balances, or more vulnerable to capital flow reversals, we reject the first-digit law for the balance-of-payments data. This corroborates the intuition of a simple economic model. The main results do not seem to be driven by countries in sub-Saharan Africa or those with low institutional quality ratings.

Abstract: Constant unit manufacturing costs are lower (higher) in high wage North when inputs are (i) tradeable, (ii) country-specific and (iii) the elasticity of substitution between them is below (above) one. A two-country model of firm entry/location is considered.

Abstract: We conjecture that banks present in two regions charge the appropriate risk premiums for trade-related projects between these markets, whereas higher rates are charged for projects involving shipments to markets where they are absent. These differences affect regional trade flows. US interstate banking deregulation serves as a natural experiment to test our model's implication with the Commodity Flow Survey data. Difference-in-differences estimates suggest that the trade share of state-pairs that allowed pairwise interstate entry increased by 14% over 10 years relative to non-integrated state-pairs. Instrumental variables estimates suggest that an actual increase in bank integration from zero to 2.28% (the mean) increases trade 17% to 25%.

Abstract: The home market effect is considered as a distinguishing feature of models of trade with increasing returns to scale in production and imperfect competition. However, some empirical studies found the existence of home market effect even in constant returns to scale industries. This paper builds a model of intra‐industry trade based upon quality assurance and shows the existence of the home market effect without increasing returns in the production technology. This throws into question the rationale of empirical studies attempting to validate the increasing returns model of trade based upon testing the existence of the home market effect.

Abstract: Will small countries deindustrialize when opening up to trade with large countries? Donald Davis (1998) shows that for the home market effect to lead to deindustrialization of small countries, trade costs for homogeneous goods must be sufficiently smaller than trade costs in differentiated goods, a condition which is not supported by empirical evidence. We show that if differentiated goods production uses tradable inputs small countries can become deindustrialized when trading with a sufficiently large country and if trade costs are low.