Taiwan's Dollar Wavers but Traders Still Bet on a Year-End Rebound

The iShares Semiconductor ETF closed at $514.71 on October 15, down nearly 14% from its October high after an eight-session skid, the sector's worst run since 2008. Traders are still betting the Taiwan dollar, down alongside the selloff, climbs back by year-end on record export earnings.

On October 15, Bloomberg reported that the Taiwan dollar and South Korean won led losses among Asian currencies as an overnight slump in Wall Street semiconductor shares spilled into the region, dampening demand for AI supply-chain plays. The New Taiwan dollar slid past the NT$32 mark against the US dollar for the first time in two months, and Taiwan's benchmark stock index lost more than 3% in its sharpest single-day drop since July. That selloff has been brutal by any measure: the iShares Semiconductor ETF closed at $514.71 on October 15, down nearly 14% from its October high, after chip stocks fell for eight straight sessions, the sector's longest losing streak since the 2008 financial crisis, according to data compiled through that date. Intel lost more than 20% in two weeks. AMD dropped over 5% intraday on October 14 alone.

So the currency move looks, on the surface, like confirmation that Taiwan's AI-driven boom is cracking along with the stocks. Look a step further and the picture gets more interesting.

While chip stocks were tanking, Taiwan's customs office posted the country's largest trade surplus on record: $23.6 billion in September, with exports surging 60.9% year-on-year to a record $87.22 billion. Shipments of information, communication and audio-video products jumped 103% from a year earlier. Year-to-date through September, the surplus is already up 61.9% to $160.6 billion, blowing past the full-year 2025 total of $157.1 billion. That's not a slowdown. That's an economy still cashing in on AI demand even as the stocks tied to that demand get dumped.

TSMC's own numbers back that up. The company's third-quarter net profit hit NT$763.1 billion, up 68.7% from a year earlier, CNBC reported on October 15, the same day the broader chip rout was accelerating. TSMC shares had touched an intraday record of NT$2,580 on October 5 before the selloff hit. The company that makes the chips everyone suddenly doubts is still printing record profit from making them.

That gap, between what the stock market is pricing and what the export data actually shows, is exactly what currency traders are leaning on. Bloomberg reported on August 10 that traders were piling into Taiwan dollar options to bet on a rebound after the currency suffered its worst July since 2015, a sign that institutional money saw the earlier weakness as overdone. Commerzbank's FX desk, in an October 9 note, put it plainly: the currency has trade strength on its side, but losses against the dollar are being capped rather than reversed outright, partly because Taiwan's central bank keeps intervening to slow the appreciation.

That intervention is the other half of this story, and it's easy to miss. The central bank disclosed FX intervention in September specifically aimed at managing how fast the Taiwan dollar climbs, not at propping it up. A currency that exporters don't want to see spike too quickly, because a stronger NT dollar eats into the margins TSMC and its supply chain earn on dollar-denominated chip sales, is a different animal from a currency in genuine trouble. Taiwan's government has raised its 2026 GDP growth forecast to as high as 11.05%, and expects full-year merchandise exports to reach roughly $903.6 billion, with the trade surplus against the US alone projected to clear $200 billion.

None of this means the chip-stock selloff is nothing to worry about. Broadcom CEO Hock Tan's comment that some AI investors were behaving like gamblers, and OpenAI's disclosure that its annualized revenue sits closer to $50 billion than the $70 billion some had expected, are real cracks in the AI-spending story that Wall Street is still digesting. If equity investors keep deciding that AI capex won't pay off on the timeline they'd priced in, that sentiment doesn't stay contained to Nasdaq tickers forever. It bleeds into currencies tied to the supply chain, the way it did on October 15.

But currencies and stocks aren't pricing the same thing. Stock investors are betting on future earnings growth from AI infrastructure spending that may or may not materialize on schedule. Taiwan's trade surplus is money that has already landed, counted in dollars, sitting in exporters' accounts right now. That distinction is why options traders can watch the same headlines spooking equity desks and still bet the Taiwan dollar grinds higher into year-end. Whether they're right depends on whether the chip-stock panic is a correction in an overheated trade or the first sign that AI capex itself is slowing down. Taiwan's September trade data says, for now, it's the former.

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