Ackert, Lucy F.; Racine, Marie D. - Federal Reserve Bank of Atlanta - 1998
. A stock index and its futures price should be cointegrated if the cost of carry is stationary. Otherwise, the … appropriate cointegrating relationship is trivariate and includes the index, futures price, and cost of carry. We study the … relationships among the Standard and Poor's 500 index, associated index futures price series, and interest rate for January 4, 1988 …