Vietnam Market Sell-Off: VIC, GAS, TCB, MSN Hold VN-Index Near 1,700

Overview

A wide-ranging sell-off hit the Hồ Chí Minh City Stock Exchange, with 150 stocks closing more than 2% lower and the exchange-wide advance-decline ratio falling to 0.16/1. The VN-Index nonetheless held near 1,700 points after VinGroup (VIC), PV Gas (GAS), Techcombank (TCB) and Masan Group (MSN) were bid up during the closing ATC session. Liquidity reached 724.5 million shares worth VND 15.8 trillion, the highest turnover in 31 sessions.

Key Facts

• 150 HOSE-listed stocks closed down more than 2% on the session.
• The HOSE advance-decline ratio was 0.16/1, second only to the 0.15/1 reading on 20 July.
• Matching turnover reached more than 724.5 million shares, the highest in 8 sessions.
• Matching value reached VND 15.8 trillion excluding put-through trades, the highest in 31 sessions.
• VIC, GAS, TCB and MSN were pushed higher in the ATC session; the VN-Index held 1,700 for roughly the final 5 minutes of continuous trading.
• 61% of VNAllshare constituents now trade below their 22 July levels, even though the VN-Index sits about 2.53% above that low.
• More than 74% of stocks have broken below the 19 October short-term low on a closing basis, while the index itself has not.
• Reference closes on 2 November: VIC 242,000; GAS 77,000; MSN 69,400; TCB 21,400.

What Happened

The session was defined by a divergence between the index and the breadth of the market. According to the market commentary, the advance-decline ratio of 0.16/1 was the weakest since 20 July, when 33 stocks hit the floor and 184 fell 2% or more. That episode was followed by a further session on 22 July with 110 stocks down more than 2% before a bottom formed. The commentary notes that despite the VN-Index holding above the 22 July low, 61% of VNAllshare stocks have already fallen below it, and more than 74% have broken the 19 October closing low.

The index-level resilience was concentrated in a handful of large caps. VIC was marked higher during the ATC auction, alongside GAS, TCB and MSN, allowing the VN-Index to settle around 1,700 points. The commentary attributes the selling primarily to a loss of confidence among holders rather than to margin pressure, noting that daily-trading margin is not large, and flags concern over October macroeconomic data as a possible trigger. On the derivatives side, the front-month contract F1 held a positive basis for most of the session, with VN30 rebounding three times from the 1,802 area before the basis turned negative.

Market Context

VIC trades on HOSE and closed at 242,000 on 2 November, with GAS at 77,000, MSN at 69,400 and TCB at 21,400. The pattern described is a narrow, large-cap-supported index masking broad weakness beneath the surface, a recurring feature of the Vietnamese market in 2025. The surge in matching value to VND 15.8 trillion indicates that sellers were forced to reach deep bid levels to clear stock, which the commentary frames as a transfer of expectations rather than a confirmed bottom.

Strategic Significance

For long-term holders, the key signal is that index performance has decoupled from portfolio performance. When 74% of stocks have broken a level the index still holds, benchmark-relative strategies and index-tracking allocations can understate realized drawdowns. The concentration of support in VIC, GAS, TCB and MSN also highlights the growing weight of a few large caps in index mechanics, which affects how foreign and domestic institutional flows are absorbed. The elevated turnover suggests genuine repositioning rather than a thin, low-conviction pullback, but the commentary is explicit that a single high-volume sell-off does not establish a bottom.

What to Watch

• Whether matching turnover stays above 700 million shares and whether declines deepen, which the commentary treats as a sign of capitulation.
• October macroeconomic data releases, cited as a possible trigger for the selling.
• The VN-Index’s ability to hold the 19 October closing low, and the share of VNAllshare stocks below that level.
• Basis behavior on the F1 contract, particularly any sustained move to negative territory.
• ATC price action in VIC, GAS, TCB and MSN, which have been the marginal support for the index.