Lumentum Holdings Inc. (NASDAQ:LITE)

Total inventory levels have exhibited a strong upward trajectory over the analyzed period, increasing from US$196.4 million in 2021 to US$691.6 million in 2026. This growth is primarily driven by substantial increases in raw materials and work-in-process inventories, while finished goods have demonstrated more volatile fluctuations.

Raw Materials and Purchased Parts

A consistent and aggressive growth pattern is observed in raw materials, which expanded from US$64.4 million in 2021 to US$370.2 million in 2026. This steady climb suggests a strategic accumulation of inputs and potentially a hedge against supply chain volatility or the anticipation of significantly higher future production volumes.

Work in Process (WIP)

Work in process levels remained relatively stable between 2021 and 2024, ranging from US$79 million to US$103.2 million. However, a sharp acceleration occurred in the subsequent years, with values rising to US$159.1 million in 2025 and US$232.4 million in 2026, indicating a marked increase in active manufacturing throughput.

Finished Goods

Finished goods inventory displayed a non-linear trend, peaking at US$134.9 million in 2023 before declining to US$57.8 million in 2025. This peak and subsequent correction suggest a period of temporary oversupply or a mismatch between production and demand in 2023, followed by more efficient inventory turnover or increased sales velocity in 2024 and 2025, with a modest recovery to US$89 million in 2026.

Aggregate Inventory Composition

The composition of total inventories has shifted toward upstream assets. In 2021, raw materials represented approximately 32.8% of total inventory; by 2026, this proportion increased to approximately 53.5%. This shift indicates a transition toward a more input-heavy inventory profile, which correlates with the expansion observed in work-in-process levels and suggests a scaling of operational capacity.