LG Innotek shares fell 5.7% to KRW 309,000 on Tuesday, extending a recent run of weakness for companies tied to Apple supply chains. The decline occurred as Apple-linked suppliers across South Korea and Taiwan faced broad selling pressure, even though Apple itself reported a robust 17.5% year-on-year increase in iPhone revenue for the September quarter.
Market attention was concentrated not on Apple’s top-line strength but on the narrowing margins among component manufacturers. LG Innotek is particularly exposed: Apple makes up roughly 78% of the company’s revenue, reflecting its role as a supplier of camera modules and semiconductor substrates for the iPhone range.
The sell-off also reflects lingering fallout from LG Innotek’s third-quarter 2026 results, published in late October. Those results showed a milestone in revenue - surpassing KRW 6 trillion for the first time - but operating profit fell by more than half. Management and investors cited the sharp depreciation of the Korean won against the dollar as a key factor hurting profitability.
That set of results has left the stock vulnerable. Shares are trading well below a 52-week high of KRW 1,788,000 and are approaching multi-month lows as analysts watch for any signs of recovery. One potential upside the market is monitoring is a ramp-up in higher-margin AI semiconductor substrates, which could help restore margins if the business scales as expected.
The wider trading environment offered little relief. South Korean equities opened sharply lower on Tuesday amid renewed doubts about the sustainability of large-scale AI infrastructure investment, and added investor caution ahead of the U.S. midterm elections further weighed on sentiment.
Bottom line: LG Innotek’s share price decline reflects concentrated customer exposure to Apple, a significant drop in operating profit in Q3 2026 driven in part by currency movement, and a broader market pullback tied to questions about AI spending and geopolitical calendar risks.