Spot rubber prices were firm on Monday as the market regained strength. Sellers stayed back following a moderate recovery in global trendsetters. RSS-4 improved to ₹121 (120) a kg, according to traders and the Rubber Board. May futures firmed up to ₹121.86 (120.61), June to ₹126.50 (124.83) and July to ₹129.00 (127.14) on the National Multi-Commodity Exchange (NMCE). RSS-3 (spot) improved to ₹117.75 (116.96) at Bangkok. May futures firmed up to ₹110.95 (109.78) on the Tokyo Commodity Exchange (TOCOM). Spot rubber rates (₹/kg): RSS-4: 121 (120); RSS-5: 119 (118); ISNR 20: 114 (112) and Latex (60% drc): 84.50 (83.50).