Vietnam Oil & Gas Stocks Surge as Foreign Investors Net Sell 740B VND

Overview

Vietnamese oil and gas stocks surged on August 18, 2026, as rising global crude prices—driven by stalled US-Iran talks and Middle East tensions—boosted the sector. The VN-Index gained 4.56 points to close at 1,732.02, but foreign investors net sold nearly 740 billion VND across all three exchanges, reflecting cautious sentiment. BSR led the rally on HOSE, rising 4.62% to 27,200 VND.

Key Facts

• VN-Index rose 4.56 points to 1,732.02; HNX-Index gained 3.68 points to 282.32; UPCoM-Index fell 0.72 points to 127.46.
• Total market liquidity reached over 16,100 billion VND, with HoSE accounting for nearly 14,900 billion VND, up about 1,000 billion VND from the prior session.
• BSR (HOSE) climbed 4.62% to 27,200 VND; GAS rose 5.56%; PLX hit the ceiling price.
• Other oil & gas gainers: PVD +1.93%, OIL +3.85%, PVS +3.48%, PVC +3.36%, PVT +0.49%.
• Foreign investors net sold nearly 740 billion VND across all three exchanges; on HoSE, net selling was over 767 billion VND.
• VIC was the most sold by foreign investors at over 150 billion VND, followed by VPB (nearly 117 billion VND), SSI (64.7 billion VND), VCB (61 billion VND), and VHM (49.5 billion VND).
• Foreign investors bought most heavily into VNM (29.7 billion VND), followed by CTR (16 billion VND), PLX (14.6 billion VND), and MBB (14 billion VND).

What Happened

Vietnamese oil and gas stocks posted strong gains on August 18, 2026, as global crude prices continued to rise amid stalled US-Iran negotiations and heightened Middle East tensions, raising concerns about supply disruptions. The sector led the market, with BSR (Lọc Hoá dầu Việt Nam) up 4.62%, GAS up 5.56%, and PLX hitting the ceiling price. This momentum helped the VN-Index close up 4.56 points at 1,732.02, despite a mixed performance in other sectors.

However, market breadth was uneven: banking and securities stocks were mostly lower, with TCB down 2.99% and SHS down 3.29%, while real estate saw selective gains (VIC +1.01%, VHM +1.47%) but broad declines. Foreign investors remained net sellers, offloading nearly 740 billion VND across all three exchanges, with VIC seeing the largest outflow at over 150 billion VND. The article, based on daily market data, highlights that domestic investors traded cautiously, with over 550 million shares changing hands.

Market Context

BSR, listed on HOSE, closed at 27,200 VND on August 18, 2026, after a 4.62% gain. The oil and gas sector’s rally aligns with rising Brent and WTI prices, which have been supported by geopolitical risks. However, the broader market remains under pressure from persistent foreign selling: the net outflow of nearly 740 billion VND on the day reflects a trend that has weighed on large caps like VIC, VPB, and SSI. Despite the sector’s strength, overall liquidity remains modest at 16,100 billion VND, suggesting investors are not yet fully committed to a sustained uptrend.

Strategic Significance

For long-term investors, the surge in oil and gas stocks underscores the sector’s sensitivity to global crude prices, which are currently elevated due to geopolitical tensions. BSR, as a refinery, benefits from higher product prices, while upstream names like PVD and PVS gain from increased exploration activity. However, the persistent foreign selling—particularly in large caps like VIC—indicates that international investors are rotating out of Vietnamese equities, possibly due to valuation concerns or global risk aversion. This divergence between sector momentum and foreign flows suggests that domestic liquidity is driving the rally, which may be less sustainable if foreign outflows continue.

What to Watch

• Crude oil price movements and any resolution in US-Iran talks or Middle East tensions, which could reverse the sector’s gains.
• Foreign net selling activity in the coming sessions, especially in VIC, VPB, and SSI, to gauge whether outflows are accelerating.
• BSR’s next quarterly earnings report, due in October 2026, to confirm whether higher oil prices are translating into improved margins.
• PLX’s ability to sustain its ceiling-price momentum, as it often acts as a bellwether for the sector.
• Overall market liquidity: a sustained rise above 20,000 billion VND would signal stronger investor participation.