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Learning in the Limit: Income Inference from Credit Extensions

Journal of Finance 2026 open access
Combining a randomized controlled trial with administrative and survey data, this paper shows that credit limit extensions significantly increase total spending and income expectations. By controlling for changes in personal income expectations, the spending response to credit limit extensions weakens by approximately 30%. For financially unconstrained consumers, expectation changes account for around two‐thirds of the spending responses to limit extensions. These findings are consistent with consumers inferring future income from credit supply.

Informed Trading and Intertemporal Substitution

Journal of Finance 2020 75(2), 1135-1156
I examine the possibility of information‐based trading in a multiperiod consumption setting. I develop a necessary and sufficient condition for trade to occur. Intertemporal substitution introduces a desire to correlate current consumption with future aggregate shocks. When agents have heterogeneous time‐inseparable preferences, information differentially affects relative preferences for current and future consumption, making information‐based trading mutually acceptable. The no‐trade result continues to hold if there is no aggregate shock, or if agents have either homogeneous or time‐separable preferences.

How do exchange rates co-move? A study on the currencies of five inflation-targeting countries

Journal of Banking & Finance 2011 35(2), 418-429
This paper does three things. First, it explores the type of asymmetry in exchange rate correlation for five inflation-targeting countries. We show their currencies co-move more closely with the currencies of some influential foreign countries during joint appreciations than joint depreciations against a world currency. Second, it establishes empirically the linkage between interest rate differentials and exchange rate correlation. We find evidence that both widening and narrowing interest rate differentials will reduce the correlation. Third, it proposes a new version of the asymmetric dynamic conditional correlation model. The model proves to be capable of providing great insight into the two issues investigated.

Capital market regulation and human capital investment: evidence from SOX and accounting major choice

Review of Accounting Studies 2026 open access
This paper analyzes the impact of the Sarbanes–Oxley (SOX) Act on individuals’ decisions to invest their human capital in regulatory compliance. Exploiting geographic variation in SOX-induced growth in the demand for accounting labor and rich survey data on college students, we find that freshmen from regions with greater public company presence exhibit a more marked increase in the propensity to major in accounting after the enactment of SOX. Consistent with the financial incentives mechanism, we find that students respond more to SOX when they have stronger pecuniary preferences, when they are better positioned to seize the financial rewards of accounting, and when they have better access to information about SOX-induced changes in monetary returns to the accounting major. Finally, regions with greater public company presence exhibit larger increases in local wages and employment in the accounting industry.

Equity tail risk and currency risk premiums

Journal of Financial Economics 2022 143(1), 484-503 open access
We find that an option-based equity tail risk factor is priced in the cross section of currency returns; more exposed currencies offer a low risk premium because they hedge against equity tail risk. A portfolio that buys currencies with high equity tail beta and shorts those with low beta extracts the global component in the tail factor. The estimated price of risk of this novel global factor is consistently negative in currency carry and momentum portfolios, and in portfolios of other asset classes, suggesting that excess returns of these strategies can be partially understood as compensations for global tail risk.

Dynamic Asset Pricing with Interactions between Short-Sale and Borrowing Constraints

The Review of Asset Pricing Studies 2021 11(4), 886-923 open access
This paper studies the joint effect of borrowing and short-sale constraints under heterogeneous beliefs and risk aversions. Although the constraints never simultaneously bind in equilibrium, interesting economics emerge in the anticipatory effects of potentially future binding constraints. In particular, the risk-free rate and Sharpe ratio experience endogenous jumps at a critical state, where two equilibria coexist. Moreover, a short-sale ban can lead to a lower stock price and higher volatility depending on the relative tightness between the constraints, and tightening the borrowing constraint during a short-sale ban can also make returns more volatile.

Trading and earnings management: Evidence from China's non-tradable share reform

Journal of Corporate Finance 2015 31, 67-90
This paper examines the effect of trading on earnings management under the setting of China's non-tradable share reform. The government-enforced reform converted non-tradable shares to tradable and thus enabled blockholders and insiders to reduce holdings via public trading. We find significant increases in accruals among Chinese listed companies after the reform. The impact of the reform on earnings manipulations is increasing with the potential for share trading, the degree of information asymmetry and the intensity of stock selling by insiders and blockholders. Our findings support that trading by large shareholders and insiders significantly increases earnings manipulations.

Legal shareholder protection and corporate R&D investment

Journal of Corporate Finance 2013 23, 240-266
This paper investigates the effects of shareholder protection law on corporate R&D investment. I find that the institutional protection of shareholder benefits reduces both underinvestment and overinvestment in R&D projects. Legal shareholder rights significantly increase R&D investment for firms that may underinvest, but reduce R&D for firms that may overinvest. Shareholder protection further enhances the growth of firms in R&D intensive industries, and promotes the economic growth of innovative countries. The results consistently show that enforcing stronger legal shareholder protection can help firms achieve an overall more efficient capital allocation to productive R&D investment.