The BSE benchmark Sensex trimmed initial gains but was still up by 54 points to 18,680 a short while ago. Earlier the Sensex recovered by over 85 points to 18,710.50 in early trade today on buying by funds and retailers ahead of RBI policy review amid a mixed Asian trend.The 30-share barometer had lost 133 points in the previous session on Friday.The Nifty at the National Stock Exchange was up by 15 points to 5,679.