China–Taiwan: invasion and blockade odds, chips and markets
As of 2026-10-26 04:32 UTC, Polymarket prices “Will China blockade Taiwan in 2026?” at 2.5%; GeoShockBoard's judgment is 2%. Status: Low air activity: 3 PLA aircraft (1 across the median line), 6 PLAN ships and 9 official ships in the 24h to 26 Oct. Market context, not investment advice.
Odds: crowd vs GeoShockBoard
| Polymarket market (exact name) | Crowd "Yes" | Ours* | Gap |
|---|---|---|---|
| Will China blockade Taiwan in 2026? China blockades Taiwan in 2026 | 2.5% | 2% | -0.5 |
| China x Taiwan military clash before 2027? China–Taiwan military clash before 2027 | 3.9% | 4% | +0.1 |
| Will China invade Taiwan by end of 2026? China invades Taiwan by end-2026 | 1.8% | 1% | -0.8 |
What would change my mind: A named PLA exercise before APEC, which would mean Beijing is pricing the export rule as a breach.
Killer tests (missing data = not met; tests whose date has not arrived = pending)
| Named PLA exercise The PLA announces a named exercise around Taiwan (Joint Sword or Strait Thunder series) | NOT MET |
| Rare-earth retaliation A Chinese rare-earth export measure that names Taiwan or the US | NOT MET |
Game-theory read
A linked game. Taiwan's new export controls are a US–Taiwan commitment device (aligning with US rules to secure the trade deal), and Beijing's drill timing is its reply. Drills are cheap, repeated signals timed to political triggers. With APEC Shenzhen on Nov 18–19 and Taiwan's local elections on Nov 28, Beijing has an incentive to hold the largest exercise until after both, unless the export rule takes effect first.
- China: Signal with drills, calibrated around Lai's statements, the US–China summit calendar and Taiwan's Nov 28 local elections.
- Taiwan: Align with US export controls to secure the trade deal and US backing.
- US: Tighten chip leakage while keeping a Trump–Xi summit on track.
- Chip supply chain: Bears the compliance cost; a blockade is the tail risk.
If it escalates: history says
| Asset | +1 session | +5 sessions | +20 sessions |
|---|---|---|---|
| Oil | +0.28% ↑57% n=7 range -6.42% to +3.71% | +0.09% ↑57% n=7 range -12.64% to +1.32% | +0.26% ↑57% n=7 range -17.10% to +6.20% |
| Gold | +0.07% ↑57% n=7 range -2.33% to +0.45% | -1.75% ↑43% n=7 range -2.74% to +2.77% | +0.82% ↑57% n=7 range -5.22% to +2.87% |
| US defense (ITA) | -0.42% ↑43% n=7 range -4.52% to +0.30% | -2.09% ↑29% n=7 range -3.20% to +2.48% | +2.44% ↑71% n=7 range -1.66% to +11.43% |
| S&P 500 | -0.74% ↑14% n=7 range -4.84% to +0.58% | -1.99% ↑29% n=7 range -3.94% to +1.06% | -0.66% ↑43% n=7 range -2.14% to +2.97% |
| VIX (pts) | +0.84 ↑86% n=7 range -1.62 to +8.51 | +2.18 ↑71% n=7 range -3.11 to +12.11 | -1.90 ↑43% n=7 range -5.22 to +3.37 |
What changed this week
- Taiwan MND (24h to 6am 26 Oct): 3 PLA aircraft sorties (1 crossed the median line into the southwestern and eastern ADIZ), 6 PLAN ships and 9 official ships; no named exercise. source T1
- Taiwan MND (24h to 6am 25 Oct): 5 PLA Navy ships and 8 official ships, no aircraft. source T1
- Taiwan MND (24h to 6am 24 Oct): 1 PLA Navy ship and 5 official ships, no aircraft. source T1
- Taiwan MND (24h to 6am 23 Oct): 3 PLA Navy ships and 7 official ships, no aircraft, as Typhoon Champi passed. source T1
- Month to date, Taiwan has tracked Chinese aircraft 163 times and ships 275 times. source T2
- TSMC is seeking rare-earth-free factory-equipment alternatives to reduce exposure to China's export controls (Reuters). source T2
Change log
- 2026-10-22: Crowd odds only (v2) → First GeoShockBoard weights and killer tests published. v3 schema: own weights, falsifiable killers, change log
FAQ
What are the Polymarket odds for “China blockades Taiwan in 2026”?
As of 2026-10-26 04:32 UTC, the Polymarket market “Will China blockade Taiwan in 2026?” priced Yes at 2.5%. Prices are trade-implied probabilities and change continuously.
What is GeoShockBoard's own call?
China blockades Taiwan in 2026: 2%; China–Taiwan military clash before 2027: 4%; China invades Taiwan by end-2026: 1%. These are GeoShockBoard judgments, logged on the track record and scored at resolution.
What would change the outlook?
A named PLA exercise before APEC, which would mean Beijing is pricing the export rule as a breach.
Which tests are being watched?
Named PLA exercise: not met. Rare-earth retaliation: not met. Missing data counts as not met; tests whose date has not arrived are pending.
How did oil move after similar past shocks?
Across 7 past Taiwan drill and export controls/tariffs events since 1990, oil's median move over 5 sessions was +0.09% (range -12.64% to +1.32%); it rose in 57% of cases. Past reactions do not predict future ones.
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