The key benchmark indices extended their record-breaking gains on Tuesday to the fourth consecutive session led by gains in information technology and FMCG heavyweights such as Infosys, Tata Consultancy Services, Hindustan Unilever, Tech Mahindra and HCL Technologies.

At close, the BSE Sensex ended with gains of 210 points to close at a record high of 55,792.27 and Nifty 50 index rose 52 points to end at a record high of 16,614.60. The mid-and small-cap shares ended on a mixed note as Nifty Midcap 100 index rose 0.34 percent and the Nifty Smallcap 100 index declined 0.26 percent.

Nine of 15 sector gauges compiled by the NSE ended lower, led by the Nifty Metal index's 2.5 percent decline. The Nifty PSU Bank, Private Bank, Realty and Bank indices also closed with a negative bias. Conversely, the Nifty IT index was the top sectoral gainer, up 2.6 percent. Nifty FMCG, Pharma, Healthcare and Consumer Durable indices rose 0.6-1.7 percent each.

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