Markets cheered as S&P BSE Sensex index soared off the charts and hit an all-time high of 53,266.12. The index also posted a record closing high of 53,158.85, up by 0.48 per cent. Sobha Ltd and L&T Technology Services emerged as the top gainers of Group A, rising by colossal 19.35 per cent and 19.08 per cent, respectively.