TSMC Faces Input Cost Risks Amid Taiwan-China Investment Collapse

### Moderate Input Cost Risk for TSMC TSMC faces moderate but sustained input cost risk as upstream supply chain shocks transmit within 3 days and fully impact its material streams within 56 days. ### Risk Propagation Pathway SCRT identifies a risk propagation path: Taiwan's investment in China collapsed from 84% to 4% — and it's rewiring global manufacturing -> quartz sand -> high-purity silicon -> silicon wafers -> wafers -> logic chips -> TSMC SCRT, SupplyGraph.AI's supply chain risk tracking framework, employs a sophisticated approach to trace risk propagation paths. 4 continuously updated 24/7 proprietary databases + SCRT risk tracing algorithms → risk propagation path The framework leverages four proprietary databases: (i) a 400M+ global company database, (ii) a 1.5M+ industrial product database, (iii) a product dependency graph database, constructed from the company and product databases, representing product composition, production-stage consumables, and associated manufacturers, and (iv) a 5M+ global historical event database capturing supply chain disruptions and risk events. SCRT analyzes historical supply chain disruption patterns and continuously tracks global events, focusing on key industrial products. By matching real-time events with historical cases, it identifies risks affecting TSMC. The framework analyzes product dependency graphs to locate impacted nodes and quantify risk exposure, propagating risk along dependency paths to derive the final impact assessment. All relationships between nodes stem from genuine business dependencies among companies. The path is constructed based on data-driven supply chain structures. ### Price Volatility and Supply Chain Impact Any supply chain disruption ultimately manifests in price signals, and the collapse of Taiwan’s investment in China—from 84% to just 4%—has already triggered measurable volatility in critical upstream commodities feeding into TSMC’s production ecosystem. Price data from March to June 2026 reveal divergent trends across key inputs: while industrial silicon prices remained relatively stable, gallium exhibited sharp fluctuations, climbing from CNY 2,002.27/kg on March 25 to a peak of CNY 2,227.50/kg by May 24 before moderating slightly. Meanwhile, Yunnan 421# industrial silicon prices edged downward over the same period. These movements reflect immediate market reactions to the realignment of cross-strait industrial linkages. |Category|Product|Date|Price| |--------|--------|------|-------| |Industrial|Gallium|2026-03-25|2002.27 CNY/kg| |Industrial|Gallium|2026-04-09|2120.00 CNY/kg| |Industrial|Gallium|2026-04-24|2106.82 CNY/kg| |Industrial|Gallium|2026-05-09|2075.00 CNY/kg| |Industrial|Gallium|2026-05-24|2227.50 CNY/kg| |Industrial|Gallium|2026-06-08|2150.00 CNY/kg| |Metals|Silicon|2026-03-25|8518.64 CNY/tonne| |Metals|Silicon|2026-04-09|8368.00 CNY/tonne| |Metals|Silicon|2026-04-24|8462.73 CNY/tonne| |Metals|Silicon|2026-05-09|8679.29 CNY/tonne| |Metals|Silicon|2026-05-24|8463.00 CNY/tonne| |Metals|Silicon|2026-06-08|8517.27 CNY/tonne| |Industrial Silicon|Yunnan 421#|2026-03-25|9750.00 CNY/tonne| |Industrial Silicon|Yunnan 421#|2026-04-09|9700.00 CNY/tonne| |Industrial Silicon|Yunnan 421#|2026-04-24|9650.00 CNY/tonne| |Industrial Silicon|Yunnan 421#|2026-05-09|9650.00 CNY/tonne| |Industrial Silicon|Yunnan 421#|2026-05-24|9570.00 CNY/tonne| |Industrial Silicon|Yunnan 421#|2026-06-08|9550.00 CNY/tonne| This price pressure propagates along three distinct but converging paths—through quartz sand to silicon wafers, gallium ore to power chips, and arsenic ore to microcontrollers—with cumulative lags dictated by procurement cycles, production rhythms, and inventory drawdowns. Initial market shocks transmit to raw materials within 1–3 days, then cascade through refining and component manufacturing over 6–10 weeks before reaching TSMC’s input streams. The gallium-driven path, in particular, points to tightening supply for GaN-based power semiconductors, as cost increases are passed through each layer with limited buffering. Taken together, the data indicate that TSMC faces moderate but sustained input cost risk across multiple material streams, with full impact expected to materialize within 8 weeks. ## **Is TSMC Really Insulated from the Shock?** A contrary view argues that TSMC may be relatively insulated from the immediate supply chain risks associated with Taiwan’s disengagement from Chinese investment, because its procurement system is vertically managed and geographically diversified. TSMC sources critical raw materials such as high-purity silicon and gallium from a broad global supplier base, including long-term contracts with non-Chinese producers in Japan, South Korea, and the United States, which reduces reliance on any single region. In addition, the company maintains strategic inventory buffers and has demonstrated strong supply chain coordination capabilities, allowing it to absorb short-term volatility without immediate operational disruption. Its dominant market position also gives it significant bargaining power, enabling it to secure alternative inputs or negotiate price stability during periods of market turbulence. Although gallium and arsenic prices have fluctuated, these materials account for only a small share of TSMC’s total input cost structure, which limits their direct impact on overall production economics. Historical precedent is also cited in support of this view: during earlier geopolitical or trade-related supply shocks, TSMC’s mitigation tools, including dual sourcing and forward buying, helped contain cost pass-through and avoid major production delays. On this basis, the rise in upstream price signals may reflect market anxiety, while the actual transmission of material risk to TSMC’s operations could be substantially dampened by structural and strategic buffers. ## **Can Diversification and Buffers Fully Offset Structural Dependence?** The counterargument overstates the extent to which resilience tools can neutralize risk in practice. Diversified sourcing reduces concentration, but it does not eliminate structural dependence on a narrow set of upstream materials and process inputs, particularly when the chain is segmented across quartz sand, high-purity silicon, silicon wafers, gallium, and arsenic-derived intermediates. Even where TSMC holds inventory or signs long-term contracts, these mechanisms are intended to smooth temporary volatility, not to absorb a sustained reconfiguration of trade and investment flows; once a shock persists beyond normal procurement cycles, replenishment costs rise, lead times extend, and production scheduling becomes more difficult to stabilize. Historical experience shows that similar supply-side disruptions have repeatedly moved beyond the first affected node: the 2020–2022 semiconductor shortage, the 2010 rare-earth export restriction episode, and the 2023 gallium and germanium export controls all demonstrated that upstream constraints can rapidly translate into component shortages, price escalation, and downstream delivery pressure for advanced manufacturers. In TSMC’s case, the three propagation paths are especially relevant. A shift at the source of Taiwan’s investment retreat can tighten availability of quartz sand, gallium ore, and arsenic ore, then move through refining and midstream processing into high-purity silicon, GaN-related power devices, and microcontroller-related components before reaching wafer and logic-chip production. At each stage, the shock is amplified by conversion losses, certification requirements, and a limited pool of qualified suppliers, so TSMC cannot fully arbitrage away the risk even with global procurement. The core issue, therefore, is not only whether a single input becomes more expensive today, but whether the underlying industrial network is becoming less flexible; once that happens, cost pressure, delayed deliveries, and output scheduling risk can propagate into TSMC’s material streams with limited room for complete insulation. ## **What Does the Balance of Evidence Suggest?** Taken together, the evidence supports a measured but clearly cautionary assessment. TSMC’s vertically integrated organization, global sourcing network, inventory buffers, and long-term supplier relationships provide meaningful protection against an abrupt operational shock, so the risk should not be overstated as an immediate supply failure. However, these defenses do not remove the underlying dependence on critical upstream materials or the multi-stage transmission of price and availability shocks across quartz sand, high-purity silicon, gallium, and arsenic-related intermediates. The historical record reinforces this conclusion: once supply constraints persist long enough to move through refining, component manufacturing, and qualification processes, the effects are no longer confined to one input category but begin to affect procurement costs, delivery timing, and production planning. The most exposed nodes remain the transitions from quartz sand to silicon wafers and from gallium ore to power-chip inputs, where conversion frictions and supplier concentration can intensify the shock. Accordingly, TSMC appears likely to remain operationally resilient in the near term, but the broader supply chain network is not fully insulated from persistent upstream reconfiguration. The most defensible judgment is that the risk is **moderate in severity**, **persistent in duration**, and capable of producing meaningful cost and scheduling pressure if the current trade and investment shift continues.