On the Hồ Chí Minh Stock Exchange, the VN-Index lost 10 points, or 1.09 per cent to end the session at 950.8 points.
Shares recovered from early losses on Tuesday to inch upwards, marking the eighth consecutive gaining day as cash flow increased at the end of the session and pushed up many large-cap stocks.
Vietnamese shares made modest gains on Friday as strong growth of banks and tech firms neutralised increasing profit-taking pressure in consumer, retail and insurance stocks.
Shares ended on a negative note on Thursday due to profit-taking pressure dumping a series of large-cap stocks.
Shares rose on Wednesday thanks to a boost from heavy-weighed stocks, but selling pressure increased strongly at the end of the session narrowed the market rally.