FPT Leads ETF Inflows as VNDiamond, VN30, VNFinlead Rebalance on May 4, 2026

Overview

FPT Corporation (FPT) is the top beneficiary of the semi-annual ETF rebalancing for the VNDiamond, VN30, and VNFinlead indices, with net buying of 7.2 million shares. The adjustment, effective May 4, 2026, follows a technical change in FPT’s market cap weight limit, while VPB faces the largest net selling of 4.1 million shares. KDH is added to the removal watch list for VNDiamond due to foreign ownership limit concerns.

Key Facts

• FPT sees the largest net buying of 7.2 million shares across the three indices.
• SHB and OCB each see net buying of over 1 million shares.
• VPB is sold the most at 4.1 million shares, followed by KDH at 3.9 million shares.
• KDH is placed on the removal watch list for VNDiamond due to insufficient foreign ownership limit (FOL); its weight is reduced by 50% to 0.8%.
• FPT’s market cap weight limit is adjusted upward to 80.5% (a 42.7% increase), driving the buying.
• The rebalancing takes effect on May 4, 2026, with trading concentrated on April 29, 2026.
• Other stocks sold include MWG (1.7M), PNJ (1.4M), REE, NVL, VIC, MSB, and VHM.

What Happened

The Ho Chi Minh City Stock Exchange (HSX) announced the new constituent lists and weights for the VNDiamond, VN30, and VNFinlead indices in the semi-annual review for Q2 2026. ETF providers tracking these indices will execute the rebalancing primarily on April 29, 2026, before the official effective date of May 4, 2026.

FPT’s weight increase is attributed to a technical adjustment in the calculation of its market cap contribution limit, which was raised to 80.5% from a lower level. This change allows FPT to have a larger representation in the indices, triggering significant buying by ETFs. Conversely, KDH was added to the removal watch list for VNDiamond because it no longer meets the minimum foreign ownership limit requirement, resulting in a 50% weight reduction to 0.8%. VPB experienced the largest net selling, with 4.1 million shares sold, as part of the rebalancing.

Market Context

FPT closed at VND 75 on April 15, 2026, down 1.31% with volume of 9.5 million shares. The stock has been a consistent performer in the technology sector on HOSE. The ETF-driven buying provides a near-term catalyst, though the broader market context includes a slight underperformance of banking stocks, which saw weight reductions in the VN30 index. Other affected tickers include SHB (close VND 15, -0.33%), OCB (close VND 12, -0.86%), and MBB (close VND 27, -0.37%), all on HOSE.

Strategic Significance

For FPT, the increased index weight reflects its growing market capitalization and liquidity, reinforcing its position as a core holding for passive investors. The technical adjustment in weight limits signals that FPT’s free-float market cap has expanded, potentially attracting further foreign interest. For KDH, the watch-list status highlights the ongoing challenge of foreign ownership limits for certain real estate stocks, which may pressure the stock until the issue is resolved. The rebalancing also underscores the shifting sector dynamics, with technology gaining weight at the expense of banking.

What to Watch

• Official index reconstitution effective May 4, 2026, and actual ETF trading volumes on April 29.
• KDH’s ability to address foreign ownership limit concerns to avoid removal from VNDiamond in the next review.
• Q2 2026 earnings reports for FPT, VPB, and other affected tickers to assess fundamental trends.
• Foreign ownership limit changes for other stocks in the VNDiamond index.
• Subsequent ETF flows and any further technical adjustments to index weight limits.