The markets succumbed to Dubai debt repayment crisis in the latter half of the week. The Smart Portfolios benchmark, the S&P CNX 500 index swung in a range of nearly 6 per cent - from a weekly high of 4,217 the index tumbled to a low of 3,967. The index finally ended the week with a loss of 1.9 per cent (79 points) at 4,069.