The NGX All-Share Index fell by 0.14 per cent to 143,520.53, while market capitalisation closed at N91.286.p trillion for the week.
This compared with 143,722.62 points and N91.415 trillion recorded in the previous week, reflecting weaker sentiment across the market.
The News Agency of Nigeria investors "lost about N129 billion this week as profit-taking continued across major counters".