Gainers outnumbered decliners by above two to one.
All six listed banks in Vietnam advanced, including Vietcombank, the country's second-biggest firm by market value, which rose 1.91 percent and VietinBank which was up 0.56 percent.
PetroVietnam Gas bucked the trend, dropping 0.86 percent following lower oil prices.
The index, Southeast Asia's best performer last year, posted its best gain since Dec. 8. Volume was 118.6 million shares, compared with the five-day average of 122.3 million.