S.Markose, E.Tsang,H.Er – Evolutionary Decision Trees for Stock Index Options and Futures Arbitrage
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Abstract
EDDIE-ARB (
EDDIE stands for Evolutionary Dynamic Data Investment Evaluator) is a genetic program (
GP) that implements a cross market arbitrage strategy in a manner that is suitable for online trading. Our benchmark for
EDDIE-ARB is the Tucker (1991) put-call-futures (
P-C-F) parity condition for detecting arbitrage profits in the index options and futures markets. The latter presents two main problems, (
i) The windows for profitable arbitrage opportunities exist for short periods of one to ten minutes, (
ii) Prom a large domain of search, annually, fewer than 3% of these were found to be in the lucrative range of £500-£800 profits per arbitrage. Standard
ex ante analysis of arbitrage suffers from the drawback that the trader awaits a contemporaneous signal for a profitable price misalignment to implement an arbitrage in the same direction. Execution delays imply that this naive strategy may fail. A methodology of random sampling is used to train
EDDIE-ARB to pick up the fundamental arbitrage patterns. The further novel aspect of
EDDIE-ARB is a constraint satisfaction feature supplementing the fitness function that enables the user to train the
GP how not to miss opportunities by learning to satisfy a minimum and maximum set on the number of arbitrage opportunities being sought. Good
GP rules generated by
EDDIE-ARB are found to make a 3-fold improvement in profitability over the naive
ex ante rule.