Beijing Threatened to Cancel Thursday's Xi-Trump Summit Over a $14 Billion Taiwan Arms Deal. Taiwan's Stock Market Hit a Record High Anyway.
By Michele De Filippo
22 Sep 2026

A Threat With a Deadline Attached

Xi Jinping is due at the White House on Thursday for his first state visit to Washington in more than a decade, and Beijing has spent the past two weeks making clear the invitation is conditional. Chinese foreign ministry spokesperson Guo Jiakun described opposition to a $14 billion arms package for Taiwan as consistent, clear-cut and resolute, and Chinese officials have signaled that a presidential signature on the deal before Thursday would be enough to cancel the meeting outright 6. The package, which covers PAC-3 MSE missile interceptors and NASAMS air-defense systems, was authorized by the US Congress back in January but has sat unsigned on Donald Trump's desk ever since 6 7.

That gap between congressional authorization and presidential action is not an oversight. Trump has openly floated the pending sale as a negotiating chip in his dealings with Xi, and reporting this week suggests he is more likely to let the package slide toward the November APEC summit, or later, than sign it days before hosting Xi 4. For a president who treats Taiwan policy as a lever rather than a fixed commitment, delay is the path of least resistance, and it is also the path markets are now pricing in.

Why Taipei Isn't Selling the Threat

If Beijing's warning were being taken at face value, Taiwan's own equity market would be the first to flinch. It has done the opposite. The Taiex hit a fresh intraday record this week as investors looked past the cancellation threat, with the broader index up roughly 1.5 percent, Taiwan Semiconductor Manufacturing Co adding another 0.6 percent on top of a rally already built on AI capex demand, and MediaTek surging more than 8 percent to an all-time high 1 2. Mainland and Hong Kong equities moved in the same direction: the Shanghai Composite added 0.4 percent, the CSI 300 gained 0.7 percent and the Hang Seng rose 0.6 percent, all on the same read that the summit proceeds and produces at minimum a continuation of the current truce 2.

The logic holds up once the arms package is treated as leverage rather than a live decision. Trump does not need to sign it to keep it as a bargaining chip, and Xi does not need it signed to justify making the trip. Cancelling a first-in-a-decade White House visit over a sale that has already sat unsigned for eight months would cost Beijing a set-piece diplomatic win it has been building toward since Trump's own visit to Beijing earlier this year 3. Investors are betting neither side wants to be the party that walks away first, and pricing the summit accordingly.

The Precedent Both Sides Are Working From

This is not the first time a Taiwan-adjacent lever has been used to frame a US-China summit. The rare-earth export controls Beijing rolled out last October were suspended for one year as part of the diplomatic groundwork for this relationship, with that suspension due to lapse on November 10, just over two weeks after Thursday's meeting 8. Xi is expected to use the Washington stop to press Trump on invoking the 1982 US-China joint communique to formally curb future arms sales, a request some reporting suggests he could time to the symbolism of the National Archives, where the original document is held 4 5.

That overlap matters for how investors should read whatever the summit actually produces. Taiwan arms policy, rare-earth licensing and semiconductor export controls are increasingly being negotiated as one bundle rather than three separate tracks, which means a soft outcome on the arms package is more likely to arrive alongside softer language on minerals and chip-tooling access than as a standalone concession. Semafor's reporting this week suggests Taiwan itself will sit on the back burner relative to trade and AI cooperation, consistent with both sides preferring vague continuity over a hard resolution in either direction 5.

What This Means for Positioning

The trade currently priced into Taiwan and Hong Kong equities is the low-volatility outcome: the summit proceeds, the arms package stays shelved, the rare-earth truce gets rhetorical support toward extension, and nothing is resolved but nothing breaks either. That is a reasonable base case given the incentives on both sides, but it leaves a specific, identifiable tail risk that looks underpriced after this week's rally. If Trump signs the arms package for any domestic political reason before Thursday, the cancellation threat is not idle rhetoric — it is a stated trigger, and Taiwan semiconductor names carrying a fresh record-high rally would be first in line for the unwind.

The more durable read for investors positioned in Taiwan and Northeast Asia tech supply chains is that the arms package will keep resurfacing as a lever at every future US-China checkpoint, the November APEC summit and the rare-earth truce deadline included, and each recurrence is likely to produce the same pattern seen this week: a pre-summit risk premium followed by a relief rally once the meeting proceeds without incident. The asymmetry favors staying long into these events rather than trading around the cancellation headlines, but hedging that specific tail — rather than assuming it away — is the more disciplined position given how explicitly Beijing has now tied it to a signature Trump has yet to make 6.

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