Futures Trading and Spot Market Volatility: Evidence from Indian Commodity Markets

Abstract

In the context of emerging Indian commodity futures markets, this paper empirically examines the effect of futures trading activity (trading volume; proxy of futures liquidity) on spot price volatility for seven agricultural commodities (guar seeds, turmeric, soya bean, black pepper, barley, Maize and Castor Seed).We decompose the futures volume into expected and unexpected components using Hodrick–Prescott filter (HP filter).To clearly understand the destabilization effect, the relationship of the unexpected liquidity of futures market is done with Unexpected volatility of spot market returns which is estimated by taking the residuals of the GARCH model. We find that unexpected futures trading volume is Granger causing spot price volatility and are significant for five out of seven agricultural commodities (Guarseed, Turmeric, Soybean, Maize and Castor Seed), consistent with Bessembinder and Seguin (1992).We find reversed effect for one commodity i.e. Pepper the effect of spot volatility on futures trading and for Barley no causality is revealed either from