Economic mapping to the renormalization group scaling of stock markets

We make an attempt to map a simple economically motivated model for price e volution [.J. Phys. A 33, 3637 (2000)] to the phenomenological renormalizat ion group scaling of stock markets. This mapping gives insight into the cri tical exponents and the renormalization group predictions for the log-perio dic oscillations preceding some stock market crashes from the perspective o f non-linear changes in 'the level of stock.