Spot rubber continued to show mixed trend on Monday as RSS 4 finished unchanged at ₹133 a kg, according to traders. The grade quoted steady at ₹132 and ₹129 respectively, while ISNR 20 and latex improved on short supplies. May futures firmed up to ₹137 (₹134.90) and June to ₹137.30 (₹135) while the July futures declined to ₹137.70 (₹139) on the National Multi Commodity Exchange. RSS 3 (spot) inched up to ₹113.84 (₹113.70) at Bangkok. April futures closed at ¥183(₹112.39) on the Tokyo Commodity Exchange. Spot rubber rates (₹/kg): RSS-4: 133 (133); RSS-5: 131 (131); Ungraded: 125 (125); ISNR 20: 124 (123) and Latex (60% drc): 105.50 (102.50).