On May 12, [LME cash-3M copper] backwardation was $23.87/mt, with open interest decreasing by 3,872 lots to 291,224 lots. On May 12, [LME cash-3M aluminum] contango was $5.34/mt, with open interest decreasing by 8,573 lots to 714,612 lots. On May 12, [LME cash-3M lead] backwardation was $5.95/mt, with open interest increasing by 180 lots to 149,126 lots. On May 12, [LME cash-3M zinc] contango was $27.37/mt, with open interest increasing by 1,652 lots to 218,113 lots. On May 12, [LME cash-3M tin] backwardation was $15/mt, with open interest increasing by 316 lots to 23,095 lots. On May 12, [LME cash-3M nickel] contango was $198.42/mt, with open interest increasing by 1,531 lots to 243,855 lots.