Korean Retail Market Snapshot: The State of U.S. Market Access

From Korea’s vantage point, overnight U.S. equities trading (or in local parlance, daytime U.S. market access) isn’t a novelty – it’s an established, practical solution for a fundamental time-zone problem. When the standard U.S. trading day runs through Korea’s night, demand doesn’t disappear; it shifts into whatever access points exist.

One key recent catalyst: after being suspended in August 2024 due to a system malfunction by an incumbent ATS, Korea’s daytime U.S. stock trading services were allowed to resume in November 2025. In their corresponding message, regulators emphasized the need for stronger safeguards and investor protection, reopening the access on the condition that multiple ATSs be used.

The scale of Korea’s U.S. investing footprint makes this more than an abstract market-structure debate. Korean investors have returned in full force, with end-of-year U.S. equity holdings surging over the past few years:

• $44.2B in 2022
• $112.1B in 2024
• $163.6B in 2025

In other words, Korea is already helping set the pace for what “normal” U.S. market access looks like outside the U.S.

Demand Profile: What Korean Investors Are Actually Trading

Korea’s cross-border demand has a clear “signature” – it’s not just generic market activity.

First, in equities, activity is concentrated in high-attention names. Reported holdings are led by Tesla and Nvidia, followed by Alphabet, Palantir and Apple. This concentration matters because it tends to correlate with catalyst-driven trading behavior (earnings, macro prints, headline volatility) – exactly the moments where waiting for the open feels most costly.

Along with this, ETF power-user behavior is at record levels. A November 2025 report from ETFGI stated that overseas ETF purchases by Korean retail investors hit an all-time high of $15.85B in October 2025, and that 19 of the top 50 overseas securities purchased were U.S.-listed ETFs. The same ETFGI dataset notes 12 of the top 19 ETFs purchased offered leveraged or inverse exposure.

At first glance, the rise in long-term U.S. holdings can seem at odds with the popularity of leveraged and inverse ETFs. But the two can coexist: many investors build durable core exposure while also using higher-octane products to express short-term views or manage risk around specific events. It seems likely that this is what’s happening here – and regulators are treating that activity as mainstream, rolling out mandatory training and mock trading requirements for certain high-risk overseas products.

Themes, Trends and Structural Roadblocks

These demand signals are only half the story – the rest is the set of structural forces shaping how (and when) Korean retail can actually participate.

First, there’s the obvious time-zone mismatch. Market-moving information hits during Korea daytime, but most of the liquidity is available while Korean investors are asleep. Bridging this logistical gap in a sustainable, repeatable way that safeguards participants is the biggest priority when it comes to U.S. market access.

There are also notable FX constraints. Cross-border equity access always includes currency exposure, and Korean regulators have been increasingly explicit about that risk – particularly whether firms are adequately explaining FX hedging and the real-world impact of won moves on overseas investments. Between early July 2025 and mid-January 2026, the won weakened by about 11.9% versus the U.S. dollar, a swing that can materially impact trading returns.

Korea’s central bank has linked the won’s recent slide to capital-flow dynamics – more outbound investing by Koreans and net selling of local equities by foreign investors. This has led to the rollout of new tax incentives for individual investors who sell U.S. stocks and replace those holdings with domestic equities, though these do not appear to have muted buying activity to date.

While local regulators have indicated they do not intend to regulate overseas stock investments, investor protection remains a top priority, as indicated by the mandatory trainings cited earlier. This reflects a broader need for safeguards and stability to serve an increasingly sophisticated retail community.

What Overnight U.S. Trading Solves

Overnight U.S. trading offers several practical benefits for Korean retail investors:

• Local-hours participation: The most basic unlock is human: U.S. equities exposure becomes something Korean investors can engage during Korea daytime, not as a midnight routine. The resumption of daytime U.S. trading services in late 2025 reflects that this is already an established expectation in-market.
• Faster reaction to U.S. news and earnings: With high-attention names and tactical ETF usage, real-time responsiveness is not a nice-to-have. When information arrives during Korea day, expanded access reduces the gap between information and action, particularly during volatility.
• Continuity for an investor base that’s increasingly “always on”: Record overseas ETF purchases and the prevalence of leveraged/inverse products indicate a segment of retail participants that is comfortable operating across market hours and instruments. Direct access to U.S. markets is a logical next step.
• A multi-market ecosystem: For brokers in Korea, the ability to offer customers both local Korea market access and credible extended-hours U.S. access within a single experience is a powerful differentiator. Today, it is actively raising the bar for execution quality, resilience and transparency. In the future, we believe it will become table stakes.

Challenges and Considerations

The remaining question is not whether overnight access is useful, but what must be true for it to scale responsibly.

• Liquidity is not uniform off-hours: Expanded access is not the same thing as identical market quality across every hour. Spreads and depth can vary, especially around corporate actions and market-impacting events. Market structure needs to be designed to make those conditions legible.
• Plumbing still matters: The 2024–2025 pause-and-resume cycle in Korea and the resulting regulatory scrutiny is a reminder that markets only work if the end-to-end stack is resilient. Smooth operations, clear disclosures, solid risk controls, institutional-grade guardrails and high-performance technology are crucial.
• Healthy competition improves resiliency and execution quality over time: The long-run goal isn’t simply “more hours.” It’s a more robust ecosystem where multiple credible venues and workflows reduce single points of failure and raise the standard for execution quality.
• Market data will make or break this market: Korean brokers can now access U.S. equities on multiple trading venues. From an execution routing perspective, smart order routers can do much of the heavy lifting. The real challenge concerns market data: normalizing, distributing and integrating extended-hours data streams across platforms can become a practical bottleneck.

Providers who claim to deliver global market transparency need to invest in this market. Bruce Markets’ integration with Yonhap Infomax is one example of the kind of work required – making real-time overnight market data easier to consume inside the systems Korean market participants already use. Exegy’s announcement of the first-ever overnight BBO feed – effectively a consolidated tape for overnight U.S. trading – is another.

Just recently, Webull announced its own consolidated overnight data feed, bringing market-wide transparency directly to its customers – which will potentially give them a big-first mover advantage within the brokerage community. Until more providers capture the entire market, many participants will be forced to piece together best execution from incomplete views.

Conclusion: Korea as a Leading Indicator

Korea is an early signal of where global retail demand is already reshaping expectations for U.S. market access: rising long-term holdings, concentrated attention-name exposure, record overseas ETF participation and a visible tactical appetite for leverage. Now, the question is whether extended-hours access evolves with the institutional-grade guardrails, operational resilience and market-data maturity required to make that access durable.

In future installments of this series, we’ll dive into other global retail markets – examining the demand profiles, regulatory developments and practical considerations that will define the next chapter of U.S. market access.