Mumbai, Aug 28 - Amid high volatility and feeble global cues, a key Indian stock market index Friday managed to end nearly 150 points higher, close to the 16,000-point mark, even though it oscillated both ways during the six-hour trading session.

The 30-share sensitive index (Sensex) of the Bombay Stock Exchange (BSE) opened the day at 15,770.19 points against the previous day's close of 15,781.07 points, and fell to the day's low of 15,663.35 points mid-way into the trading session.

Eventually, the barometer index made a smart recovery and ended just below the crucial 16,000-point mark at 15,922.34 points, with a gain of 141.27 points, or 0.9 percent, data with the exchange showed.

Over the past week, the Sensex has gained 681.51 points, or 4.47 percent.

During the trading session Friday, nine of the 13 sector-specific indices closed in the green, while those for consumer durables, fast-moving consumer goods, information technology and healthcare closed in the negative territory.

Among the 30 shares that comprise the Sensex basket, 21 closed higher, while the remaining nine ended in the red.