DMX Insider Buy: Dien May Xanh Board Member Registers for 100,000 Shares After 18% Drop

Overview

A member of Dien May Xanh’s board of directors, Vo Ha Trung Tin, has registered to purchase 100,000 DMX shares, equal to 0.00788% of the company, between September 18 and October 17, 2026. The registration follows an approximately 18% decline in the share price from its post-listing peak, despite strong first-half 2026 revenue and profit growth. DMX is the listed vehicle of the Dien May Xanh electronics retail chain.

Key Facts

• Vo Ha Trung Tin, a Member of the Board of Directors of Dien May Xanh, registered to buy 100,000 DMX shares, or 0.00788% of the company.
• The transaction window runs from September 18 to October 17, 2026, via negotiated deal or order matching on the exchange.
• Before the transaction, Tin held no DMX shares; on completion he would hold 100,000 shares.
• At the September 14, 2026 close of VND 70,000 per share, the purchase would cost approximately VND 7 billion.
• DMX listed on HoSE on August 6, 2026 at a reference price of VND 80,000, peaked at VND 86,500 on August 13, and has since fallen about 18%.
• H1 2026 net revenue reached VND 65,280 billion, up 27% year on year, with after-tax profit of VND 4,876 billion, up 73%, completing 53% of the revenue plan and 66% of the profit plan.
• Eight-month 2026 revenue reached VND 87,050 billion, up 29% year on year and 71% of the annual plan; August revenue rose 14% month on month and 28% year on year.

What Happened

According to the company’s latest disclosure, Vo Ha Trung Tin, a Member of the Board of Directors of Dien May Xanh, registered to buy 100,000 DMX shares for personal investment purposes. The filing states he held no DMX shares prior to the transaction. If completed, his holding would represent 0.00788% of the company’s shares outstanding. The purchase is scheduled to be executed by negotiated deal or order matching between September 18 and October 17, 2026.

The registration comes after a sharp correction in the share price. DMX closed at VND 70,000 on September 14, 2026, down roughly 18% from its peak of VND 86,500 on August 13. The stock only began trading on HoSE on August 6, 2026, at a reference price of VND 80,000. The decline contrasts with operating results: H1 2026 revenue rose 27% and after-tax profit rose 73% year on year, with gross margin at 20.1% and net margin at 7.5%. Eight-month revenue grew 29% year on year, and August was the second-strongest revenue month of 2026 after the Tet peak. By category, ICT accounted for 54% of system revenue, consumer electronics 41% and services 5%, with Android phones the largest single category at 23%, followed by iPhone at 19% and home appliances at 11%.

Market Context

DMX trades on HoSE, having listed on August 6, 2026. The shares closed at VND 70,000 on September 14, 2026, about 18% below the August 13 intraday peak of VND 86,500 and 12.5% below the VND 80,000 listing reference price. The pullback has occurred against a backdrop of strong reported fundamentals, a divergence that is common for newly listed Vietnamese consumer-retail names as early holders take profit and the free float turns over. The insider registration is the first board-level purchase filing since listing.

Strategic Significance

The buy registration is a small but symbolically relevant signal for a stock that has de-rated since listing despite accelerating revenue and profit. Dien May Xanh’s investment case rests on margin expansion in a scale-driven electronics retail model: gross margin of 20.1% and net margin of 7.5% in H1 2026 indicate that store density and category mix, particularly high-value ICT and Apple products, are translating into operating leverage. A director with no prior holding choosing to establish a position after an 18% drawdown suggests internal confidence that the price decline reflects post-IPO flow dynamics rather than a deterioration in demand. For long-term investors, the key question is whether the H1 margin trajectory is durable through the seasonally weaker second half and whether the company can sustain the 29% eight-month revenue growth rate against a high base.

What to Watch

• Disclosure of the actual executed volume and resulting ownership percentage after the October 17, 2026 window closes.
• Q3 2026 earnings release, particularly gross margin versus the 20.1% H1 level and progress against the full-year revenue and profit plans.
• September and October monthly revenue disclosures, to confirm whether August’s 28% year-on-year growth is sustained.
• Any further insider or major-shareholder transaction filings, which would reinforce or undercut the signal from this registration.
• Post-listing share price stabilisation relative to the VND 80,000 reference price and the VND 86,500 peak.