Indian Overseas Bank saw its market capitalization nearly double during the July-to-September quarter, according to S&P Global Market Intelligence data. Five other public sector banks rose in the market cap rankings over the previous quarter. Central Bank of India's market cap grew 76.59 per cent over the previous quarter, while Union Bank of India gained 59.56 per cent, Indian Bank gained 44.78 per cent and UCO Bank 58.94 per cent, each climbing up two notches in the ranking, S&P Global Market Intelligence data showed.