Snapping its six-day winning run against the US currency, the rupee dropped by 26 paise to end at 66.99 on renewed dollar demand from banks and importers amid sharp falls in equity market.
The rupee opened higher at 66.70 a dollar from last closing level of 66.73 at the Interbank Foreign Exchange (Forex) market on dollar selling by banks and exporters.
However, it dropped afterwards to 67.0150 on fag-end dollar demand from banks and importers before ending at 66.99 a dollar, showing a loss of 26 paise or 0.39 per cent.
The domestic unit hovered in a range of 66.70 a dollar and 67.0150 per dollar 66.70 a dollar during the day.
The rupee had gained by 62 paise or 0.92 per cent in previous six trading days.