MBB Leads Bank Selloff as Foreign Investors Net Sold VND 589B on Nov 3

Overview

Foreign investors and proprietary trading desks were net sellers on the November 3 session, with combined net selling exceeding VND 630 billion, the bulk of it from foreign accounts. The banking sector absorbed nearly VND 589 billion of net outflow even after offsetting purchases in TCB and TPB, with MBB, VCB, ACB, STB, VPB and SHB all sold. Securities stocks weakened again after a late-October recovery.

Key Facts

• Combined foreign and proprietary net selling on November 3 exceeded VND 630 billion, with foreign investors accounting for the majority.
• The banking sector recorded net foreign outflow of nearly VND 589 billion after netting purchases in TCB and TPB.
• MBB, VCB, ACB, STB, VPB and SHB were all sold heavily by foreign investors in the session.
• MBB closed at VND 18,900 on November 3; VCB at VND 53,500; ACB at VND 20,250; STB at VND 66,600.
• Proprietary trading desks sold in the same direction as foreign investors, per VietstockFinance data cited by Vietstock.
• Securities stocks fell back toward their lowest price zones after the late-October rebound faded.
• November has historically been favorable for the VN-Index, which rose in 7 of the last 10 years, according to VietstockFinance.

What Happened

Vietstock reported, citing VietstockFinance data, that the November 3 session saw foreign investors and proprietary traders move in the same direction as net sellers, with total value above VND 630 billion. The larger share came from foreign selling. Within banks, purchases of TCB and TPB partially offset the outflow, but the sector still recorded net foreign selling of nearly VND 589 billion, concentrated in MBB, VCB, ACB, STB, VPB and SHB.

The same report noted that the recovery in securities stocks at the end of October was quickly overshadowed by renewed weakness, with several names retreating to their lowest price zones in a period. The article is a pre-market briefing aggregating session data rather than a single company disclosure, and it does not break out net flow by individual ticker beyond naming the banks sold.

Market Context

MBB trades on HOSE and closed at VND 18,900 on November 3, with VCB at VND 53,500, ACB at VND 20,250 and STB at VND 66,600. The session fits a pattern of broad foreign withdrawal from large-cap banks, a group that has carried much of the VN-Index’s foreign-flow sensitivity given its index weight and liquidity. The simultaneous selling by proprietary desks removes a domestic counterweight that often absorbs foreign supply, and the pullback in securities stocks signals that risk appetite across financials was not sustained after the October rebound. The article also flags thin liquidity in the final week of October, concentrated in securities and real estate.

Strategic Significance

For long-term holders, the relevant signal is the composition of the flow rather than the headline number. Foreign and proprietary desks selling the same large-cap banks on the same session suggests the marginal buyer was absent at these price levels, which matters for MBB and peers because bank valuations are sensitive to sustained foreign ownership changes. The offsetting purchases in TCB and TPB indicate the selling is selective rather than a blanket exit from the sector, pointing to relative-preference rotation among banks rather than a sector-wide de-rating. The historical November seasonality cited in the report is a weak counterweight to a flow-driven drawdown and should not be treated as a standalone thesis.

What to Watch

• Daily foreign net flow by ticker for MBB, VCB, ACB, STB, VPB and SHB to see whether the outflow persists or reverses.
• Whether proprietary desks continue selling alongside foreign investors or step back in as domestic buyers.
• Foreign-ownership room filings for the affected banks, which cap how much further foreign selling can run.
• The PMI and October socio-economic data releases scheduled for November, cited in the report as key macro events.
• Whether securities stocks hold their late-October lows or extend the pullback, as a read on broader risk appetite.