what is the s p gsci 
the s p gsci is a composite index of commodities that measures the performance of the commodities market the index often serves as a benchmark for commodities investments investing in a gsci fund provides a broadly diversified unleveraged long only position in commodity futures the s p gsci was simply called the goldman sachs commodity index gsci before it was purchased by standard poor s in 2007 although owned by s p dow jones indices the gsci should not be confused with the similar dow jones commodity index djci 