Over 90% of the most advanced chips are produced in Taiwan.

Omissions

• The claim does not define 'most advanced chips'; sources typically operationalise this as logic semiconductors below the 10nm process node. Under this definition, Taiwan's share is approximately 92%.
• Taiwan's dominance is concentrated in a single company, TSMC, which operates fabs both in Taiwan and — increasingly — overseas (Arizona, Japan). The overwhelming majority of advanced production capacity remains on the island.
• The figure refers specifically to logic (processor) chips and does not encompass all semiconductor categories (e.g. memory chips, where South Korea dominates).

Sources

• SecondaryUS International Trade Administration (trade.gov) — Taiwan Country Commercial Guide: SemiconductorsTaiwan remains a critical hub in the global semiconductor supply chain, accounting for over 60% of global foundry revenue and more than 90% of the most advanced chips.
• SecondaryAsia Pacific Foundation of CanadaTaiwan produces over 60 per cent of the world's semiconductors and more than 90 per cent of the most advanced chips.
• SecondaryStatistaTaiwan is home to 92 percent of the production of logic semiconductors whose components are smaller than 10 nanometers.
• SecondaryThe ConversationOne firm, Taiwan Semiconductor Manufacturing Company (TSMC), produces more than 90% of the world's most advanced semiconductor chips.