TSMC's and Foxconn's stocks closed down 9.98% and 9.77% on April 7 as US tariffs roil global supply chains; the US' 32% tariff on Taiwan is among Asia's highest
Context & Ripple Effects
The sell-off follows mounting trade-policy pressure on Taiwan’s technology supply base. In March, tariff threats and export controls were already pushing TSMC peers, including Foxconn, Wiwynn and Quanta, toward expanding US production.
The market reaction also fits a longer pattern in which US policy has made reliance on Taiwanese chip production a strategic business risk; efforts to reduce US dependence on Taiwanese chips predate the latest tariff action.
First-order effects
- TSMC and Foxconn face an immediate market-value repricing as investors assess the earnings and supply-chain exposure created by the 32% US tariff on Taiwan.
- Taiwan-based manufacturers and their customers must reassess sourcing, shipment timing and the potential cost of serving the US market.
Second-order effects
- The tariff increases the incentive for TSMC, Foxconn and adjacent suppliers to shift incremental production or assembly toward the US, reinforcing the relocation plans already visible among Taiwan’s server and electronics makers.
- Customers may bring forward chip and electronics purchases to get ahead of tariff costs; TSMC’s subsequent tariff-related customer stockpiling illustrates how trade uncertainty can distort near-term demand.
Third-order effects
- If tariff exposure persists, supply-chain geography—not just chip capability or assembly scale—will become a more durable determinant of competitiveness for Taiwan-linked manufacturers.
- The episode strengthens a broader bifurcation of semiconductor and electronics production between Taiwan-centered capacity and US-based capacity, though the pace will depend on whether tariff policy endures.
The trend: Trade policy is turning Taiwan’s technology supply chain into a regionalization test, accelerating pressure to build production capacity closer to the US market.