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Working Paper
Bank Interventions and Options-based Systemic Risk: Evidence from the Global and Euro-area Crisis
Using a novel dataset on central bank interventions to financial institutions, we examine the impact of capital injection announcements on systemic risk for the banking sector in the U.S. and the euro area between 2008 and 2013. We propose a new measure of options-based systemic risk called downside correlation risk premium (DCRP), which quantifies the compensation investors demand for being exposed to the risk of large correlated drops in bank stock prices. DCRP is calculated using options that provide a hedge against large drops in the price of a bank index and its individual components. We find that, irrespective of their characteristics, intervention announcements significantly reduce DCRP in the U.S. while for the euro area, interventions were largely unsuccessful at reducing DCRP.
AUTHORS: Tian, Mary; Londono, Juan M.
DATE: 2014-09-04
Working Paper
Firm characteristics and empirical factor models: a data-mining experiment
"A three-factor model using the standardized-unexpected-earnings and cashflow-to-price factors explains 15 well-known asset pricing anomalies." Our data-mining experiment provides a backdrop against which such claims can be evaluated. We construct three-factor linear pricing models that match return spreads associated with as many as 15 out of 27 commonly used firm characteristics over the 1971-2011 sample. We form target assets by sorting firms into ten portfolios on each of the chosen characteristics and form candidate pricing factors as long-short positions in the extreme decile portfolios. Our analysis exhausts all possible 351 three-factor models, consisting of two characteristic-based factors in addition to the market portfolio. 65% of the examined factor models match a larger fraction of the target return cross-sections than the CAPM or the Fama-French three-factor model. We find that the relative performance of the complete set of three-factor models is highly sensitive to the sample choice and the factor construction methodology. Our results highlight the challenges of evaluating empirical factor models.
AUTHORS: Kogan, Leonid; Tian, Mary
DATE: 2012
Working Paper
Tradability of Output, Business Cycles, and Asset Prices
I examine the effect of a firm's tradability, the proportion of output that is exported abroad, on its stock returns. There are three novel empirical findings: (1) firms with higher tradability have more cyclical asset returns; (2) firms with higher tradability have more cyclical earnings growth; (3) returns of a portfolio long on firms with the highest tradability and short on firms with the lowest tradability can predict the real exchange rate. The empirical patterns are consistent with the relative price adjustment of tradable and non-tradable goods to business cycles driven by endowment shocks.
AUTHORS: Tian, Mary
DATE: 2015-01-08