StandoffSince
Taiwan makes most of the world's advanced chips, and the standoff decides whether markets can keep treating that supply, and the sea lanes around the island, as safe.
Updated · Taiwan Strait Tension Index
PLA joint combat readiness patrols announced by Taiwan's MND, October Three: 6, 9 and 14 October . Taiwan Ministry of National Defense China last held war games near Taiwan in late December 2025. Since then its pressure has taken other forms. Taiwan’s Ministry of National Defense (MND) announced three “joint combat readiness patrols” by the People’s Liberation Army (PLA) this month, on 6, 9 and 14 October. The largest, on 9 October, involved 19 aircraft sorties, 13 of them across the median line of the Strait. On 12 October Beijing sanctioned ministers from Paraguay and Belize, two of the 12 countries that keep formal ties with Taipei.
US Navy Taiwan Strait transits, publicly declared Three since January 2025; one in 2026 . Heritage Foundation study, via Breaking Defense Beijing says Taiwan is part of China; Taipei says it is keeping the status quo. Taiwan’s MND says China has held large-scale exercises encircling the island every year since August 2022. This phase began with Lai Ching-te’s inauguration as president on 20 May 2024. Joint Sword-2024A followed three days later. In April 2025, during Strait Thunder-2025A, the PLA said it practised hitting simulated ports and energy facilities. Chinese state media called Justice Mission-2025, in December, a response in part to a US$11.1 billion US arms package. After meeting Xi Jinping in May, President Trump said he was holding a further $14 billion package “in abeyance”. The US Navy has made three publicly declared transits of the Strait since January 2025, one of them in 2026. Our analysis reads these as a freeze wider than one arms sale.
TAIEX record close 49,822.55 . Focus Taiwan (CNA) TAIEX close 47,111.26 . Focus Taiwan (CNA) TSMC share of Taiwan's stock market value Over 40% . Focus Taiwan (CNA) Commodity-carrier transits, June: east of Taiwan vs the Strait 527 vs 420 . MarineTraffic data, via Bloomberg (Taipei Times) This month Taiwan’s market moved on other news. The TAIEX, Taiwan’s main stock index, closed at a record 49,822.55 on 6 October and at 47,111.26 on 16 October. Its falls on 13 and 15 October were blamed first on a US tech sell-off after an oil spike, then on US inflation data and fears of a Federal Reserve rate hike; our note traces both. TSMC, the chipmaker, accounts for over 40% of Taiwan’s stock market value. The quieter change is at sea. China’s coast guard has patrolled east of Taiwan since June. That month commodity carriers made 527 transits east of the island, against 420 through the Strait, MarineTraffic data show. That side of Taiwan does not appear in the aircraft counts, and we have found no insurer or freight rate that prices it.
Open questions: whether Trump approves, cancels or keeps holding the $14 billion package; whether Beijing holds a named exercise before Taiwan’s local elections on 28 November; and whether its coast guard moves from questioning ships east of Taiwan to boarding them.
Valtor’s inference Our reading, which is an inference: Beijing has moved its pressure to tools that a sortie count and a stock index do not register: sanctions, patrols and coast guard ships. A named exercise or a boarding east of Taiwan would be the first sign that markets need to reprice.
Each also stands in the margin beside the paragraph that states it.
Taiwan's defence ministry reported the month's third PLA joint combat readiness patrol: 13 aircraft sorties, 11 of them across the median line. Taiwan Ministry of National Defense
China sanctioned ministers of Paraguay and Belize, two of the 12 countries with formal diplomatic ties to Taiwan, over those ties. Taipei Times
Lai said in his National Day speech that Taiwan 'will not accept subordination'; China's Taiwan Affairs Office said the speech 'disregards facts'. Taipei Times
Taiwan took delivery of the first two of the 66 F-16V Block 70 fighters it bought from the United States. Focus Taiwan (CNA)
Xi met Trump in Washington; Xinhua said Xi urged him to oppose Taiwanese independence, and the White House had not released its own account. Al Jazeera
After a summit with Xi Jinping in Beijing, President Trump said he was holding a $14 billion arms package for Taiwan 'in abeyance' and that 'it depends on China'. AP, via Fortune
The PLA began Justice Mission-2025 around Taiwan, with 89 aircraft and 28 vessels on day one by Taiwan's count; it announced the end on 31 December, though its warning zones had expired the day before. Taiwan Security Monitor, George Mason University
The US State Department approved US$11.1 billion in arms sales to Taiwan, one of Washington's largest-ever packages for the island. Al Jazeera
PLA forces surrounded Taiwan in drills; the next day, under the name Strait Thunder-2025A, the PLA said it practised hitting simulated ports and energy facilities. AFP, via Taipei Times
Days after Lai's National Day speech, the PLA held Joint Sword-2024B; Taiwan counted 34 Chinese warships and 125 aircraft around the island that day. Radio Free Asia
China's Eastern Theater Command began Joint Sword-2024A, two days of drills around Taiwan, which it called punishment for 'Taiwan independence' forces. Stars and Stripes
Lai Ching-te was sworn in as Taiwan's president and urged China to stop its military threats and intimidation. AP, via PBS NewsHour
A $14 billion weapons package and a Pentagon visit to Beijing have stalled since May, and US Navy transits of the Strait have all but stopped. Taipei says nothing has changed, and its stock market set a record.
4 sourced figures
Two joint combat readiness patrols and a carrier group at sea, but no exercise. Taipei's two sharp sell-offs since the National Day speech came through oil, US interest rates and chip stocks.
6 sourced figures
Risk dashboards count PLA aircraft. The quieter change is coast guard presence east of the island, where in June more commodity ships passed than through the Strait itself.
3 sourced figures
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