NBER Publications by Jung-Wook Kim

Using complete order books from the Korea Stock Exchange for a four-year period including the 1997 Asian financial crisis, we observe (not estimate) limit order demand and supply curves for individual stocks. Both curves have demonstrably finite elasticities. These fall markedly, by about 40%, with the crisis and remain depressed long after other economic and financial variables revert to pre-crisis norms. Superimposed upon this common long-term modulation, individual stocks' supply and demand elasticities correlate negatively at high frequencies. That is, when a stock exhibits an unusually elastic demand curve, it tends simultaneously to exhibit an unusually inelastic supply curve, and vice versa. These findings have potential implications for modeling how information flows into and thro...

Traditional U.S. industries with higher firm-specific stock return and fundamentals performance heterogeneity use information technology (IT) more intensively and post faster productivity growth in the late 20th century. We argue that elevated firm performance heterogeneity mechanically reflects a wave of Schumpeter's (1912) creative destruction disrupting a wide swath of U.S. industries, with newly successful IT adopters unpredictably undermining established firms. This evidence validates endogenous growth theory models of creative destruction, such as Aghion and Howitt (1992); and suggests that recent findings of more elevated firm-specific performance variation in richer, faster growing countries with more transparent accounting, better financial systems, and more secure property rights...