Spot rubber strengthened further on rumours that Government would take certain positive measurers to support the growers. The trend was mixed. RSS 4 improved to ₹122 (₹121) a kg, as reported by the traders. The grade was quoted unchanged at ₹121 and ₹118 respectively by the Rubber Board and dealers. May futures increased to ₹123.20 (₹121.07), June to ₹126.15 (₹124.17) and July to ₹128.50 (₹126.15) on the National Multi Commodity Exchange. RSS 3 (spot) firmed up to ₹111.75 (₹108.77) at Bangkok. May futures closed at ¥211.4 (₹112.49) on the Tokyo Commodity Exchange. Spot rubber rates (₹/kg): RSS-4: 122 (121); RSS-5: 116 (115); Ungraded: 107 (106); ISNR 20: 105 (105) and Latex (60% drc): 86 (86).