Market volatility and the demand for hedging in stock index futures

This study examines the relation between stock market volatility and the demand for hedging in S&P 500 stock index futures contracts. Open interest is used as a proxy for hedging demand. The analysis employs unique data that identify separately the open interest of large hedgers, large speculators, and smaller traders. Volatility estimates are decomposed into expected and unexpected components, to assess whether traders’ reactions to volatility depend upon its predictability. Results indicate that daily open interest for hedgers increases when unexpected volatility increases. Increases in unexpected volatility may cause hedgers to raise their estimates of future expected volatility, and hence increase their demand for hedging. Open interest of speculators is not related to expected volatility, and is only weakly related to unexpected volatility. The increase in the participation of hedgers in periods of higher volatility is significantly larger than the increase in the participation of speculators. The results suggest that increases in stock market volatility increase the demand for hedging. © 2000 John Wiley & Sons, Inc. Jrl Fut Mark 20: 105–125, 2000     

The pricing of stock index futures spreads at contract expiration

This paper conducts an empirical analysis of the mispricing of calendar spreads for stock index futures. Using recent data drawn from the Sydney Futures Exchange, a sharp increase in the magnitude of spread mispricing immediately prior to maturity of the near contract is documented. This pattern in mispricing is related to a sharp decline in open interest in the near contract and an increase in open interest in the deferred contract. Further, the direction of mispricing of the near and deferred contracts are more likely to move in opposite directions as the near contract approaches maturity. These findings are consistent with the hypothesis that traders seeking to roll‐over their positions from near to deferred futures contracts close to maturity increase the magnitude of spread mispricing. © 2002 Wiley Periodicals, Inc. Jrl Fut Mark 22:451–469, 2002     

Rolling over stock index futures contracts

Derivative contracts have a finite life limited by their maturity. The construction of continuous series, however, is crucial for academic and trading purposes. In this study, we analyze the relevance of the choice of the rollover date, defined as the point in time when we switch from the front contract series to the next one. We have used five different methodologies in order to construct five different return series of stock index futures contracts. The results show that, regardless of the criterion applied, there are not significant differences between the resultant series. Therefore, the least complex method can be used in order to reach the same conclusions. © 2009 Wiley Periodicals, Inc. Jrl Fut Mark 28:684–694, 2009     

股指期货的推出对股票市场的影响

我国推出股指期货的背景 股指期货是一种以股票价格指数作为标的物的金融期货合约。由于股票指数基本上能代表整个市场股票价格变动的趋势和幅度,上世纪70年代以后人们开始尝试着将股票指数改造成一种可交易的期货合约并利用它对所有股票套期保值,规避系统风险,于是股指期货应运而生。目前,国内生产总值（GDP）排名前21位的国家或地区,除中国外都有股指期货。中国已成为全球第四大经济体,如此庞大的经济体没有股指期货市场,在世界上是罕见的。     

A market index futures contract and portfolio selection

This paper shows that if security returns are generated according to the market model and there is a futures market in the market index, then optimal portfolios can be selected in three steps: 1) select the optimal combination of firm unique characteristics; 2) select the optimal investment in the market; and 3) select the optimal investment in the risk-free asset. The futures market contract separates the choice of firm and market exposure and thus both simplifies the mathematics involved and increases the mean/variance efficiency of the optimal portfolio.