The Ho Chi Minh Stock Exchange's VN Index closed down 2.67 percent at 445.00 points on Tuesday.
Foreigners bought VND268.04 billion ($12.87 million) worth of shares and sold stocks valued at VND138 billion, the exchange said.
Volume of shares traded: 154.49 million shares.
Value: VND2.16 trillion.
In Hanoi, the HNX Index on the Hanoi Stock Exchange eased 0.77 percent to finish at 75.20 percent, with 183.12 million shares traded, valued at VND1.65 trillion.
Nguyen Hoang Long, director of brokerage, An Binh Securities:
"With the combined volume on the both exchanges rocketing, stocks may have peaked in the short term and could start a correction period in the next week or two."
"The VN Index may re-test a strong support level at 410 points. However, technically, stocks are still on a medium upward trend."
Quach Manh Hao, deputy director, Thang Long Securities:
"Stocks lost steam after having failed to test strong resistance levels at 460-470 points on the main bourse and 77-78 points in the Hanoi exchange."
"I expect stocks to correct in the next two weeks."
Doan Tran Phuong Phi, head of brokerage team, Ho Chi Minh City Securities:
"Stocks fell considerably in part due to broad-based profit taking and also because of concerns over a possible hike in fuel costs."
"Selling pressure may continue weighing on the market in the new few sessions."
Nguyen Hoai Nam, analyst, Kim Eng Securities:
"Corrections could be short-lived as demand seems strong and can absorb. Technically, stocks are still on an upward trend."