The US stock market is getting its biggest structural overhaul in decades — and Malaysian retail investors are positioned to benefit more than almost any other investor group in Asia.
Here is exactly what is happening, when it takes effect, and what it means for your US portfolio.
What Is US 24/5 Trading?
For decades, US equities traded just 6.5 hours daily — 9:30 am to 4 pm Eastern Time (ET). That window is now expanding dramatically.
24X Exchange became the first SEC-approved national exchange to offer 23-hour weekday trading on 14 October 2025. NYSE Arca received SEC approval to extend its hours shortly after. Nasdaq filed its own 23-hour proposal in December 2025, explicitly citing strong demand from APAC investors who cannot trade US stocks during regular hours without staying up through the night.
The shift is not just about exchanges. The real gating factor is clearing infrastructure. NSCC (National Securities Clearing Corporation) plans to operate 24×5 — from Sunday 8 pm ET to Friday 8 pm ET — beginning 28 June 2026, subject to regulatory approval. Without NSCC clearing going live, exchanges are approved but cannot fully launch. DTCC readiness is what the entire industry is waiting for.
US Trading Sessions vs Malaysian Time (MYT, GMT+8)
This is the table every Malaysian investor trading US equities needs to bookmark:
| US Session | US ET | Malaysia MYT (GMT+8) | Practical? |
|---|---|---|---|
| Overnight (extended) | 8 pm Sun – 4 am | 8 am Mon – 4 pm | Normal working hours |
| Pre-market | 4 am – 9:30 am | 4 pm – 9:30 pm | Evening, very accessible |
| Regular session | 9:30 am – 4 pm | 9:30 pm – 4 am | Late night to early morning |
| After-hours | 4 pm – 8 pm | 4 am – 8 am | Middle of the night |
The best window for Malaysian traders is the pre-market session: 4 pm to 9:30 pm MYT. You are still awake, pricing is actively forming, and this is when you can react to US earnings reports or macro data released during the Malaysian afternoon.
Why This Is Big News for Malaysian Investors
The overnight session — 8 am to 4 pm MYT Monday to Friday — now aligns perfectly with normal Malaysian working hours. This was not a coincidence. APAC investor demand was one of the primary drivers pushing US exchanges toward 23/5 trading in the first place.
Previously, a Malaysian investor who wanted to trade Apple, Nvidia, or S&P 500 ETFs during the US regular session had to stay awake until 4 am MYT. That is no longer the case for the extended overnight market. While liquidity in the overnight session is thinner than the regular session, the structural access itself is a major improvement.
For M+ Global users at Malacca Securities — access to 24X Exchange or NYSE Arca extended-hours trading will depend on Malacca Securities’ broker-dealer connections to these venues. This is worth monitoring as the infrastructure matures through 2026. If and when connected, Malaysian retail investors using M+ Global could trade US equities during normal business hours.
Not yet on M+ Global? Switch using Invitation Code UBZQ to get access to US market trading.
5 Risks You Must Know Before Trading Extended Hours
Extended-hours trading comes with real risks that the SEC has documented clearly:
1. Wide bid-ask spreads. SEC staff found that spreads more than tripled during after-hours trading compared to the regular session. You pay significantly more to buy and receive less when selling outside regular hours.
2. Low liquidity and no fill guarantee. Fewer buyers and sellers means your order may not execute, or may only partially fill — especially for smaller-cap stocks.
3. Use limit orders only. Market orders behave unpredictably in extended hours. Always set a limit price. Some rules that apply during regular trading hours do not apply to extended-hours orders — check with your broker before placing trades.
4. Weaker NBBO protection. The National Best Bid and Offer best-price rules are less effective outside regular hours, meaning price protection for retail investors is reduced.
5. News-driven gaps. Earnings releases, Federal Reserve decisions, and macroeconomic data frequently drop outside regular hours. An after-hours move does not guarantee the same direction at the next regular-session open — early moves frequently reverse as more participants enter.
Key Takeaways for Malaysian Investors
- US 23/5 trading is live via 24X Exchange since October 2025. NYSE Arca and Nasdaq are following.
- Full clearing infrastructure (NSCC 24×5) goes live 28 June 2026 — the real milestone to watch.
- The overnight session (8 am–4 pm MYT) now aligns with Malaysian business hours. No more 4 am wake-up calls.
- The pre-market window (4 pm–9:30 pm MYT) is the sweet spot — accessible and active for Malaysian traders.
- Always use limit orders in extended hours. Spreads are wide and liquidity is thin.
- M+ Global users should monitor Malacca Securities announcements on extended-hours access through 2026.
For Malaysian investors who have always wanted to participate in US markets without a lifestyle disruption, 24/5 trading is the structural shift you have been waiting for. Use AI stock analysis tools to screen US stocks before the extended session opens, and make sure your trading account type supports US market access.
Related Resources from Dexter Chia
Disclaimer: This article is for informational and educational purposes only and does not constitute financial advice. Always do your own research before making investment decisions.
Want to invest in US or Bursa Malaysia markets? Contact Dexter Chia, an AI-Driven Remisier with 2,200+ clients at Malacca Securities Sdn Bhd (M+ Global). Invitation Code: UBZQ | WhatsApp: +60169059789 | Why Choose Dexter?