China’s exports to the US have fallen, increasing the role of Japan, South Korea and Taiwan in providing trade surpluses to the US. Across all trading partners, the three economies recorded a combined $40bn surplus in January, with a rolling three-month average of $30bn.
The Bank of Korea has warned the current supply shock could be worse than 2022–2023. This could shift the region from large surpluses into trade deficits and reduce capital outflows linked to surplus recycling.
Capital Flow Reversal Scenarios
If the combined position moved from a $40bn surplus to more than $30bn in deficits, that would be a $70bn single-month change in capital outflows, assuming full recycling. On a three-month rolling basis, the swing could reach $150bn, moving from a $30bn positive average to -$20bn.
The combined surplus drop for China, Taiwan and South Korea for intervention purposes exceeded $100bn in March alone. This is cited as evidence that a $150bn fall in recycling flows is possible.
We should be preparing for a significant reversal of capital flows from Asia, which could spark major currency moves in the coming weeks. The concern is that the large trade surpluses from South Korea, Taiwan, and Japan are about to flip into deficits, removing a key pillar of support for global markets. This suggests we should position for weakness in the Korean won (KRW), Taiwanese dollar (TWD), and Japanese yen (JPY) against the U.S. dollar.
This warning is already being validated by recent data. South Korea’s trade surplus for March 2026 just came in at a razor-thin $0.8 billion, a steep drop from the $4.3 billion surplus seen in February, as rising energy import costs bite into export gains. Looking back, we saw similar pressures build in late 2025, but the current pace of deterioration appears much faster.
Trading And Hedging Implications
For traders, this points towards buying U.S. dollar call options against these Asian currencies to profit from their potential decline with managed risk. The expected capital flow swing, potentially reaching a $150 billion reversal on a three-month basis, will almost certainly spike foreign exchange volatility. Therefore, buying straddles or strangles on currency ETFs is a viable strategy to trade this expected increase in price movement.
The situation in Japan is particularly acute, where the yen has continued to weaken past 162 to the dollar this month, despite the Bank of Japan’s minor rate hike in February 2026. This shows that monetary policy is failing to counter the larger trade and capital flow dynamics. This reinforces the case for long USD/JPY positions.
A reduction in these Asian surpluses means less money being recycled into U.S. government bonds. We are already seeing the 10-year Treasury yield creep back up towards 4.50%, a level not seen since the brief scare in the third quarter of 2025. We should consider using derivatives to position for higher U.S. interest rates, such as shorting Treasury note futures.
This potential trade shock would also directly impact the equity markets of these export-driven nations. Their benchmark indices, like the KOSPI and Nikkei, have already shown signs of stalling in early April 2026 after a strong first quarter. Hedging strategies, such as buying put options on ETFs like EWY for South Korea or EWJ for Japan, should be considered to protect against a downturn.
