Taiwan's biggest companies are making serious money from their American operations, which is good news for their shareholders and for Trump's push to bring factories to the US.

• TSMC is the standout winner, with US profits jumping more than fivefold in the first half of the year, driven almost entirely by its Arizona plant.
• TSMC also has by far the largest pile of money invested in US subsidiaries, and it added the most new investment over the past year and a half.
• Formosa Plastics flipped from a loss to a profit in its US business as petrochemical margins bottomed out and started recovering.
• Server and electronics makers Wiwynn and Wistron doubled their US investments, while steel firm Ta Chen and chip-equipment engineer Hantang saw profits surge on TSMC-related work.
• The winners cluster in four areas: chips and supply-chain engineering, AI servers and contract manufacturing, biotech, and old-line industry plus finance.

Outlook: With Arizona production ramping and more capital heading west, Taiwan's US-exposed companies look set to keep posting stronger American earnings.