Nifty50 maintained its upward momentum for the third consecutive session on Thursday amid the expiry of weekly option contracts. Before closing 148 points, or 1.09 per cent, higher at 13,749, the index shuttled between intraday high and low of 13,772 and 13,627. In the process, the index formed a bullish candle on the daily chart and a long-legged Doji on the weekly chart. The latter indicated indecision about the future direction. A long-legged Doji is a candlestick pattern that comprises long upper and lower shadows and has approximately the same opening and closing prices. The candlestick pattern signals indecision about the future direction of the underlying security.