On April 28, the [[LME cash-3M copper]] backwardation was $28.6/mt, with open interest decreasing by 399 lots to 285,380 lots. On April 28, the [[LME cash-3M aluminum]] contango was $33.82/mt, with open interest increasing by 4,649 lots to 703,495 lots. On April 28, the [[LME cash-3M lead]] contango was $15.86/mt, with open interest decreasing by 124 lots to 147,337 lots. On April 28, the [[LME cash-3M zinc]] contango was $35.72/mt, with open interest increasing by 2,089 lots to 207,331 lots. On April 28, the [[LME cash-3M tin]] contango was $170/mt, with open interest increasing by 30 lots to 23,206 lots. On April 28, the [[LME cash-3M nickel]] contango was $200.26/mt, with open interest increasing by 5,161 lots to 239,605 lots.