Spot rubber resumed upward journey, reacting in tune with the global gains on Wednesday. RSS 4 improved to ₹135 (₹133) a kg, according to traders and the Rubber Board. The grade was quoted firm at ₹132 (₹130) by dealers. May futures flared up to ₹142.50 (₹137.02), June to ₹142.70 (₹137.22) and July to ₹143.08 (₹137.58) on the National Multi Commodity Exchange. RSS 3 (spot) closed firm at to ₹116.98 (₹114.61) at Bangkok. April futures closed at ¥187.9 (₹113.91) on the Tokyo Commodity Exchange. Spot rubber rates (₹/kg): RSS-4: 135 (133); RSS-5: 133 (131); Ungraded: 126 (125); ISNR 20: 124 (124) and Latex (60% drc): 109 (106.75).