VCB to Lead ETF Inflows at USD 30.7M in September Rebalancing

Overview

During the peak ETF rebalancing week of September 14-18, 2026, Vietcombank (VCB) is expected to attract the largest net buying among Vietnamese large caps, estimated at USD 30.7 million. This inflow stems from a combination of FTSE GEIS index flows and Fubon Vietnam ETF’s portfolio reallocation, highlighting VCB’s dual benefit from passive fund activity.

Key Facts

• VCB expected net buying: USD 30.7 million, the highest among affected tickers.
• FTSE GEIS contributes approximately USD 8 million to VCB inflows; Fubon reallocation adds USD 22.7 million.
• Fubon Vietnam ETF’s total portfolio turnover could reach USD 103.2 million, about 28.9% of its portfolio.
• Fubon plans to sell 100% of positions in KBC, VCI, KDH, and VND, with estimated net sales of USD 4.5M, USD 3.9M, USD 3.5M, and USD 3.2M respectively.
• Fubon will cap VIC and VHM at 10% weight, selling USD 42.8 million and USD 12.6 million of these stocks.
• Proceeds from sales will be reallocated to 28 remaining stocks in the portfolio.
• Rebalancing expected to be completed before the effective date of September 21, 2026.

What Happened

According to statistics from Rồng Việt Securities, the ETF rebalancing week from September 14-18, 2026 will see significant portfolio adjustments by Fubon Vietnam ETF. The fund is expected to execute trades totaling USD 103.2 million, representing a substantial portion of its holdings. Notably, Fubon will sell its entire positions in KBC, VCI, KDH, and VND, while also trimming VIC and VHM to comply with a 10% cap.

The capital released from these sales will be redistributed across 28 other stocks in the portfolio. This reallocation mechanism creates additional buying pressure for several tickers, particularly those that also benefit from FTSE GEIS index flows. VCB stands out as the primary beneficiary, receiving an estimated USD 30.7 million in net buying—USD 8 million from FTSE GEIS and USD 22.7 million from Fubon’s rebalancing. Other stocks like MCH, VIC, FPT, VPB, VHM, BID, ACB, VPL, MSN, VNM, and SSI also see net inflows, though smaller.

Market Context

VCB, listed on HOSE, closed at VND 58,100 on September 8, 2026. The anticipated inflows come at a time when foreign investors have been selectively adding to large-cap banking names. The dual support from FTSE GEIS and Fubon is likely to provide a floor under VCB’s price during the rebalancing week. In contrast, KBC, VCI, KDH, and VND face selling pressure without offsetting index inflows, potentially leading to short-term price weakness. The broader Vietnamese market has been influenced by the upcoming FTSE Russell review, with passive flows driving volatility in constituent stocks.

Strategic Significance

For long-term investors, the ETF rebalancing underscores the growing importance of passive flows in Vietnam’s equity market. VCB’s ability to attract significant inflows from multiple sources reflects its strong liquidity and index weighting. The reallocation by Fubon also highlights the impact of index methodology changes, such as the 10% cap, which can create forced buying and selling. Investors should view these flows as temporary, but they can offer entry or exit opportunities. The fact that VCB is a dual beneficiary suggests it remains a core holding for international funds, reinforcing its status as a bellwether for foreign investment in Vietnamese banks.

What to Watch

• Actual net buying figures for VCB and other tickers during the week of September 14-18, 2026.
• Price movements of KBC, VCI, KDH, and VND to gauge selling pressure impact.
• Fubon’s official announcement of portfolio changes, expected before September 21, 2026.
• FTSE Russell’s next review schedule for potential further index adjustments.
• Trading volumes on VCB and other high-liquidity names to confirm absorption of large orders.