The recent surge of the Taiwanese dollar is truly astonishing, soaring nearly 10% in just two trading days, breaking the psychological barrier of 30 yuan, and marking the largest single-day increase in 40 years. I looked at the market data, and in early May, the New Taiwan dollar suddenly jumped 5% in a single day, with the highest intraday rate reaching 29.59 yuan. The entire foreign exchange market was shaken, with trading volume hitting the third-highest in history.

Honestly, the logic behind this rally is quite complex. First, Trump's tariff policies ignited the fuse, and the market expects a wave of centralized procurement worldwide, which could benefit Taiwan's exports in the short term, leading to a frenzy of foreign capital inflows. But more critically, the central bank is caught in a dilemma— the U.S. government explicitly flagged "currency intervention" as a key review point, making it difficult for the central bank to intervene strongly in the forex market as it did in the past. Coupled with large-scale hedging operations by Taiwan's life insurance companies and corporations, as well as concentrated unwinding of New Taiwan dollar financing arbitrage trades, these factors have amplified the volatility.

Will the Taiwan dollar depreciate again? Based on current valuation models and the foreign exchange derivatives market, the NT dollar is expected to continue appreciating in the short term. UBS's report shows that the New Taiwan dollar has shifted from undervaluation to a fair value that is 2.7 standard deviations above, the strongest appreciation expectation in five years. However, the upside is limited, and most industry insiders believe that the likelihood of the NT dollar rising to 28 yuan is very low. According to the BIS real effective exchange rate index, the NT dollar is currently around 96, which is in a reasonably undervalued state, leaving room for further appreciation. But the central bank is expected to increase intervention when the exchange rate rises another 3%, approaching its tolerance limit.

Comparing this with other Asian currencies reveals the clues: the NT dollar has appreciated 8.74%, the yen 8.47%, and the Korean won 7.17%. Essentially, everyone is rising; the NT dollar's volatility is just more intense. Looking at the past decade, the NT dollar against the US dollar has fluctuated between 27 and 34, which is relatively stable compared to global currencies. The movements of the NT dollar are mainly driven by the Federal Reserve's interest rate hikes and cuts, rather than Taiwan's central bank.

For traders wanting to seize this opportunity, my advice is to test the waters with small amounts and avoid impulsively adding more. If you have USD assets, you can hedge with forward contracts to lock in the appreciation benefits. In the long run, Taiwan's economy remains solid, with strong semiconductor exports, so the NT dollar might oscillate between 30 and 30.5 yuan, still relatively strong. But forex positions should not exceed 5%–10% of your total assets; the rest should be diversified into other global assets to reduce risk. Remember to set stop-loss points to protect yourself during trading, and keep a close eye on the actions of Taiwan's central bank and the latest developments in US-Taiwan trade, as these will directly influence the exchange rate trends.