Karachi : Pakistan's Karachi Stock Exchange 100 Index fell 64.39 or 0.6 per cent to 10,454.63.
Faysal Bank fell 3.7 per cent, the most in six weeks, to Rs18 after rising 5 per cent earlier.
The share rose after Faysal Bank announced its first- quarter net income rose to Rs1.69 billion or Rs2.77 a share in the three months ended March 31, from Rs255.2 million, or Rs0.42 a share, a year ago.
"The share rose and then investors saw an opportunity to book profits, leading the stock to fall," said Khurram Schehzad, head of research at Invest Capital & Securities in Karachi.
Silk Bank fell 6.9 per cent, the most in almost 11 months, to Rs3.38 after it said its first-quarter loss widened.
Silk Bank said its net loss in the first quarter widened to Rs2.9 billion or Rs3.22 a share.
