On May 17th, according to the US Commodity Futures Trading Commission (CFTC), as of the week ending May 13th, US speculators increased their CME net short position in the S&P 500 index by 31350 lots to 287281 lots, while stock fund managers increased their CME net long position in the S&P 500 index by 44461 lots to 857623 lots.
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