Macro Analysis

Black Swan Risk: Where Is a Global Black Swan Taking Shape?

Private credit, the BOJ, energy markets, South Korea, and global capital flows

Black swan risk rarely comes from one isolated headline. A real black swan event usually takes shape when several weak links begin to fail at the same time: liquidity tightens, credit quality weakens, energy markets become unstable, capital flows reverse, and investor confidence starts to erode. That is why current black swan risk should be understood as a structural problem, not just a sensational narrative.

This article does not try to predict the exact date of a crash. Its purpose is to identify the signs of a possible black swan emerging across the global financial system, so investors can better understand the real risk structure beneath surface-level market pricing.

1) Black swan risk in private credit: liquidity stress is starting to show

The first warning sign of a potential black swan comes from private credit, where liquidity is often the most underestimated risk in strong markets. According to Reuters, BlackRock limited redemptions in its HPS Corporate Lending Fund after redemption requests surged. The Wall Street Journal reported that the fund is roughly $26 billion in size and stuck to a 5% quarterly redemption minimum despite requests reaching 9.3%. Blackstone has also faced heavy redemption pressure in BCRED. Once private credit funds start relying on redemption gates, markets need to understand that this is no longer just a yield story. It becomes a core black swan issue: the underlying assets are hard to sell quickly just when investors want immediate cash.

2) Black swan risk from the BOJ and Japan: a global capital-cycle variable

The next possible black swan variable is Japan. To be precise, the BOJ ended Yield Curve Control in March 2024. The official Bank of Japan statement says the QQE framework with YCC and negative rates had fulfilled its role. Reuters also confirmed that the BOJ ended negative rates and moved away from YCC in March 2024: Reuters – BOJ ends negative rates and the YCC era. The key issue now is not whether Japan “just abandoned” YCC, but what the next phase of normalization could mean. Reuters reported that Japan remained the largest foreign holder of U.S. Treasuries at about $1.202 trillion in the November 2025 data: Reuters – Foreign holdings of U.S. Treasuries. If Japanese domestic yields become more attractive and capital repatriation accelerates, pressure on global yields and risk assets could increase. In a broader black swan setup, even one major capital-flow shift can change the valuation regime across markets.

Japan is not proof that markets must crash. But the BOJ and Japanese capital flows are too important to ignore in any serious black swan analysis.

3) Black swan risk in Middle East energy: the fastest transmission channel

If there is one area where geopolitical stress can quickly turn into financial stress, it is still energy. Reuters reported disruptions involving regional energy infrastructure, including Ras Tanura and Qatari LNG activity: Reuters – Ras Tanura and regional energy disruption, Reuters – Iran war threatens global energy markets. A real black swan in energy is never just about oil prices. If supply disruption becomes serious enough, the shock moves directly into inflation, rate expectations, bond yields, funding conditions, and equity valuations.

Black Swan Risk from the Iran War: Hormuz and the Industrial Chain Reaction

The Iran war is not just an oil story. The deeper concern is that the Strait of Hormuz remains a strategic route for roughly 20% of global oil and LNG supply, which means that if disruption persists, the shock can spread far beyond the energy market. Reuters reported that traffic through Hormuz was effectively blocked for days, forcing Kuwait to cut output and Qatar to halt a major part of its LNG operations, even as Qatar remains one of the most important LNG suppliers to Asia. Source That is why Hormuz risk does not stop with crude oil. Taiwan remains highly dependent on imported LNG, with Qatar and Australia each accounting for roughly one-third of Taiwan’s LNG imports in 2025, while gas-fired power makes up more than 40% of its electricity mix. This means any prolonged disruption through Hormuz could put pressure on Taiwan’s energy security, electricity costs, and industrial supply chains, including the ecosystem around TSMC, which sits at the center of advanced semiconductor production. Source Another underappreciated channel is fertilizer. Reuters reported that the Gulf region and the Hormuz route are linked to about one-third of global fertilizer trade, meaning a prolonged conflict would not only raise energy costs but could also feed into agricultural costs, food inflation, and broader pressure on import-dependent economies. In that sense, the Iran war should be understood as a physical supply-chain risk that can spill into inflation, currencies, bond yields, and financial assets, not simply as a headline about oil prices. Source

Another industrial link worth watching is sulphur and sulphuric acid.

Reuters reported that disruption in the Gulf is tightening sulphur supply for Indonesia’s nickel industry, while sulphur is used to produce sulphuric acid — a critical input in the leaching and processing of metals such as nickel and copper. Reuters, citing USGS data, noted that the Middle East accounted for about 24% of global sulphur production last year. This means that if Hormuz disruption becomes prolonged, the impact may not stop with oil and gas, but could also spill into industrial metals, battery materials, and other upstream manufacturing inputs. Source

4) Black swan risk in South Korea: the clearest example of contagion

South Korea has already given markets a real-world example of how a black swan structure can spread. According to Reuters, the KOSPI plunged 12.06% on March 4, 2026, its worst one-day drop on record. Over two sessions, around $553.82 billion in market value was wiped out, while the won fell to its weakest level in 17 years before stabilization measures were deployed. The key lesson is not just the size of the decline. It is the transmission mechanism. Oil rose, war fears escalated, foreign money exited, the currency weakened, and equities repriced sharply. That is how a black swan operates: risk does not hit one asset class in isolation. It spreads across commodities, FX, rates, and stocks.

5) Black swan risk from U.S. policy uncertainty: another layer of fragility

Beyond liquidity, the BOJ, and energy, U.S. policy uncertainty is adding another layer of risk. Reuters reported that U.S. Customs and Border Protection said it could not yet comply with a tariff refund order: Reuters – U.S. customs agency cannot comply with refund order. AP also reported that officials were moving closer to a solution for companies that paid tariffs later deemed illegal: AP News – tariff refund process. This may not be enough on its own to trigger a crisis, but in a market already sensitive to war risk, oil shocks, and liquidity stress, institutional uncertainty can make a broader black swan setup more dangerous.

6) Black swan and the Venezuela gold signal: small in size, meaningful in geoeconomics

The Venezuela gold arrangement does not create a global financial shock by itself. But it is still a signal worth watching in a wider black swan framework. Reuters reported that Venezuela’s Minerven signed a deal to supply 650 to 1,000 kilograms of gold doré to Trafigura: Reuters – Venezuela gold deal. What matters is not the absolute size of the shipment. What matters is that, in unstable periods, flows of strategic resources such as oil, gas, gold, and metals often reveal deeper geopolitical and geoeconomic shifts. This is not proof of an extreme scenario, but it is part of a larger black swan map.

7) Black swan analysis is not about calling the exact crash date

If all these pieces are put together, the picture becomes clearer. Private credit is exposing liquidity stress. The BOJ and Japan may become major variables in the global capital cycle. Middle East energy remains the fastest transmission channel for macro shock. South Korea has shown how quickly markets can break once several shocks hit at the same time. U.S. policy uncertainty adds another layer of fragility. And the Venezuela gold signal suggests that the geoeconomic side of the black swan story should not be ignored. This is not proof that a major crisis must happen immediately. But it is a black swan structure that serious investors should not dismiss.

What should investors watch if they are concerned about a black swan?

Whether redemption pressure in private credit continues to spread.
The pace of further BOJ normalization.
The real extent of disruption across strategic energy routes such as Hormuz.
The reaction of U.S. Treasury yields to external shocks.
Whether volatility spreads further across Asian equity markets after South Korea.

In practice, a black swan rarely starts with one dramatic explosion. It usually starts with small cracks that look disconnected and easy to dismiss. At some point, those cracks connect into a fault line large enough to change the entire state of the system.

Black Swan