Stock markets' three-day rally fizzled out with benchmark indices Sensex and Nifty ending on a flat note amid a choppy trade on Thursday as  lacklusture sentiment across global equity markets fuelled the outflow of foreign capital.Photograph: Francis Mascarenhas/ReutersAfter oscillating between gains and losses during the day, the 30-share BSE barometer Sensex ended with a slight gain of 12.16 points, or 0.01 per cent, at 84,478.67.During the session, it touched a high of 84,919.43 and a low of 84,253.05. T ...