Estimation of the Investment Thresholds of Large Japanese Manufacturers

We approximate the investment threshold by the point at which a logistic curve has the largest curvature of convexity. Our threshold estimates are 1.82 and 1.51 in Tobin's marginal Q for machinery manufacturers and chemical/metal manufacturers, respectively. These numbers lie in between the two estimates calculated by Barnett and Sakellaris for US manufacturers. Our estimates exceed one in all industries, which also agrees with Dixit and Pindyck's analytic result. The threshold for the electrical machinery industry is higher than the others. An increase in uncertainty raises the investment threshold, while an appreciation in asset value lowers it.
JEL Classification Numbers: C23, E22.