Although the US held just 12% of the world’s total semiconductor manufacturing capacity in 2021, US-based companies held approximately 46.3 percent of the total semiconductor market share. This seeming discrepancy can be explained by both the dollar value of imported US semiconductors, outlined above, and the fact that many US-based companies own and operate semiconductor fabrication plants in other countries, such as Japan. In such cases, the manufacturing capacity is added to that country’s capacity rather than the capacity of the US, but the profits typically count as part of the US economy.