AI-Fueled Market Rally Masks Rising Macro Risks as Bitcoin Gains Hedge Narrative

Global markets are trading near record highs even as the geopolitical and macro backdrop looks unusually fragile—a disconnect that is increasingly forcing investors to ask what, exactly, is being priced in, and what is being ignored.

The stress points are piling up. The war in Ukraine is now entering its fifth year, while tensions involving Iran show little sign of resolution despite upbeat remarks from President Trump. At the same time, uncertainty around the future of NATO has intensified after Washington moved ahead with a withdrawal of U.S. troops stationed in Germany, raising fears in Europe that the alliance could be heading toward effective paralysis. Oil prices have climbed again, U.S. consumer inflation has turned sharply higher, household sentiment is cooling, and national debt metrics continue to deteriorate. Cracks are also appearing across global supply chains.

Yet U.S. benchmark stock indices remain close to all-time highs, and South Korea’s KOSPI has stayed resilient on expectations of a semiconductor ‘supercycle’. In market terms, investors are betting that powerful structural flows—led by AI-driven capital expenditure and passive investment—can overwhelm geopolitical shocks, at least for now.

AI hype and the modern ‘picks-and-shovels’ trade

The clearest tailwind is AI. It is working through two channels: the belief that AI will lift productivity over time, and a data-center buildout that has become a capital-expenditure wave on the order of roughly $1 trillion. Microsoft ($MSFT), Amazon ($AMZN), Alphabet ($GOOGL), Meta Platforms ($META), OpenAI, and Anthropic have all expanded server capacity, intensifying competition for advanced chips, memory, power infrastructure, and construction.

This has revived a classic ‘picks-and-shovels’ framework: in the 19th-century gold rush, the most reliable winners were often not the miners but the merchants selling tools, supplies, and infrastructure. In the AI cycle, that logic translates into beneficiaries such as utilities, builders, semiconductor and server hardware makers, and even smaller cities attracting data-center projects.

For South Korea, the market impact has been unusually concentrated. Samsung Electronics and SK hynix—whose high-bandwidth memory (HBM) and advanced DRAM have become core components of AI infrastructure—collectively account for roughly 30% of KOSPI market capitalization. That means Korean equities are structurally positioned to absorb the upside of U.S. Big Tech AI spending, but also to amplify the downside if that spending slows.

Adjacent Korean sectors have rallied in tandem under an ‘AI·power·security’ narrative: semiconductor equipment names, power and energy infrastructure plays, and defense contractors have all benefited from the same capex-and-security-driven sentiment cycle. The risk, however, is asymmetry. If the U.S. AI capex cycle wobbles, KOSPI’s concentration could make it more volatile than U.S. equities, not less.

Passive investing as a ‘self-reinforcing feedback loop’

Another major pillar of U.S. equity strength has been passive investing. A large share of household financial assets in the U.S. sits inside long-term retirement structures such as 401(k)s and IRAs, as well as discretionary managed accounts that often allocate heavily to index products. When money flows into index funds, managers buy constituents mechanically. That pushes prices higher, which attracts more inflows—creating a ‘self-reinforcing feedback loop’ that can be powerful for extended periods.

South Korea has been developing a similar dynamic. With default investment options spreading through retirement plans, more domestic retirement money has been directed into ETFs and target-date funds (TDFs). At the retail level, U.S. S&P 500 and Nasdaq-100 ETFs have become especially popular, while the National Pension Service has steadily increased the share of overseas equities in its portfolio. In effect, a portion of Korea’s long-term savings has become intertwined with U.S.-led passive flows.

FOMO, TINA, and Korea’s surge into U.S. stocks

Two psychological forces have also reinforced the rally: ‘Fear Of Missing Out (FOMO)’ and ‘There Is No Alternative (TINA)’. When peers appear to be compounding wealth through equities, staying on the sidelines becomes socially and emotionally difficult. And when equities look like they could deliver near double-digit annual returns, the opportunity cost of parking money in short-term bonds or traditional hedges can feel unpalatable.

In Korea, these forces are visible in the explosive growth of retail participation in U.S. markets—the so-called “Seohak ants” phenomenon. Depository data show that Korean investors’ overseas equity holdings have surpassed $100 billion, with more than 90% concentrated in U.S. stocks. Top purchases have clustered around the “Magnificent Seven,” leveraged ETFs, and triple-leveraged products tied to Tesla ($TSLA) or Nvidia ($NVDA), effectively embedding ‘leveraged AI exposure’ into household asset allocation.

The complication for Korean investors is currency risk. In a global risk-off shock, the U.S. dollar can strengthen sharply against the Korean won—yet that often coincides with falling U.S. equities. The timing mismatch can be painful: FX moves do not reliably “hedge” equity drawdowns when both can work against a portfolio in the same window, creating a scenario of compounded losses rather than offsetting effects.

To be sure, not everything is smoke and mirrors. Corporate profits in the U.S. have remained relatively resilient even as some mega-cap names have disappointed, and Korean semiconductor companies have posted record results as HBM demand ramps. That fundamental support helps explain why markets have stayed buoyant despite escalating headlines.

Risks the market may be underpricing: Hormuz and supply chains

The most immediate macro tail risk is that markets have not fully reflected the potential shock from Iranian tensions and the resulting disruption in supplies of critical commodities—including crude oil, liquefied natural gas (LNG), fertilizer-related nitrates, helium, sulfur, and aluminum.

A key nuance is timing. Before any escalation, large volumes of oil had already transited the Strait of Hormuz and were effectively part of a ‘floating supply chain’—cargo already at sea, still weeks away from end buyers. That buffer is now largely exhausted. Once the last deliveries arrive, replacement volumes may be limited, even if conditions stabilize later.

For South Korea, the vulnerability is direct. The country imports roughly 70% of its crude from the Middle East, much of which transits Hormuz, and it has significant dependence on Qatari LNG. Analysts have warned that strategic stockpiles may only cushion disruption for around a month—a constraint that applies broadly across major Asian importers.

Even a rapid reopening of shipping lanes would not erase the price shock created by a supply gap. Higher energy prices could ripple into inflation, disrupt logistics, and raise recession risk internationally. For Korea, the scenario threatens a worsening trade balance, further won weakness, and earnings pressure across petrochemicals, refining, airlines, and shipping—yet equity pricing, critics argue, still reflects a largely U.S.-driven assumption that disruptions will be short-lived.

Overextended AI expectations—and the memory cycle’s downside

Another uncomfortable question is whether AI is generating enough real revenue to justify the scale of investment. AI is undeniably transformative technology, but “powerful” does not automatically mean “profitable,” especially on the timelines implied by markets. Skepticism has been growing regarding whether AI’s productivity impact will match the most optimistic forecasts.

Concerns about AI output quality—often described as ‘slop’—have also entered the debate. Errors and low-quality generated content can undermine trust, while polluted data can feed back into training datasets, potentially degrading future model performance. If confidence in AI’s commercial payoff weakens, the impact would not be confined to U.S. mega-caps. Korea could feel the shock more intensely because memory demand tends to lag U.S. Big Tech capex decisions. A pullback in HBM orders would quickly hit earnings expectations for Samsung Electronics and SK hynix, and by extension the index that is heavily tethered to their market caps.

Private credit as a potential ‘canary in the coal mine’

Beyond AI, stress in private credit has emerged as another potential ignition point. Major managers—including Apollo, BlackRock, Blackstone, KKR, and Morgan Stanley—have tightened redemption terms across certain vehicles, highlighting liquidity constraints in parts of the market. A central problem is price discovery: in a forced-sale environment, assets may draw bids only at steep discounts to book values.

Some market participants argue the private credit market—often estimated around $4 trillion—would not be large enough to threaten the broader system even under significant impairment. Critics counter that such estimates can understate the role of leverage and ‘contagion’. Losses can pressure regional banks and spill into listed funds and ETFs holding related exposures, echoing lessons from rapid feedback effects seen in past stress episodes.

For Korea, the relevance is indirect but real. Korean institutional investors, including pension and insurance capital, have built meaningful allocations to global private credit and real estate. Shocks in alternatives can transmit with a lag into domestic balance sheets and risk budgets.

The dark side of passive dominance

The same passive mechanism that lifts markets can also accelerate declines. In a drawdown, investors redeem index products, managers sell constituents, and falling prices trigger further outflows—reversing the ‘feedback loop’ into a self-reinforcing liquidation cycle.

That dynamic can be especially hazardous for markets like Korea, where foreign ownership is high. If U.S. risk appetite breaks and global portfolios reduce exposure, emerging-market equities such as Korea and Taiwan are often among the first to be sold. Foreign selling can weaken the won, and currency volatility can in turn intensify outflows—creating a second feedback loop that links equity liquidation and FX stress.

What the broader implications are for diversified portfolios—including crypto

The central takeaway is that bullish scenarios and downside risks are both plausible at the same time. Rather than treating the current rally as either a guaranteed continuation or an imminent collapse, the period underscores the value of diversifying across both ‘time’ and ‘asset classes’—especially for investors whose portfolios are heavily exposed to the U.S. equity cycle and the AI narrative.

In that context, Bitcoin (BTC) continues to be discussed by some investors as ‘digital gold’—a hedge-like asset that may benefit from declining trust in fiat currency regimes or systemic stress. While correlations can shift sharply during crises, the claim is that BTC’s long-term role in a diversified “hedge basket” alongside gold and high-quality sovereign bonds is strengthening, particularly for investors seeking alternatives to equity-centric portfolios.

For Korean investors specifically, the argument is that concentrating only in U.S. stocks can amount to “buying the same risk twice” when KOSPI itself behaves like a beta proxy for U.S. AI capex via its semiconductor concentration. Broadening exposure across regions and instruments—while acknowledging currency risk—may matter more in a regime where geopolitical shocks, commodity constraints, and liquidity-driven market mechanics can all collide.