AI Chip Bottleneck Cascades to Optical Communications, Defense Stocks Still Reeling from Canada Loss
Analysts traced how AI-industry bottlenecks have cascaded sequentially: starting with Nvidia GPU shortages for training generative AI, moving to memory shortages, then CPU demand for inference, followed by TSMC-led advanced packaging, substrates (including upstream materials like CCL, copper foil, glass fiber, and glass substrates), MLCCs (Samsung Electro-Mechanics), power semiconductors, and inspection equipment, with optical communications and semiconductor equipment now flagged as the next beneficiaries and both surging on the day.
Bitgwa Electronics hit the daily upper limit, Daehan Optical Communication jumped about 23%, and Korea Advanced Materials gained about 19%. Hosts cautioned that while such cascading demand typically signals a genuine industry boom, past cycles, such as construction, cement, construction equipment, and building materials stocks all rising in sequence, eventually marked a market top; the key test, they said, is whether front-end demand itself begins to shrink, not merely whether the cascade has run its course.
The defense sector was the focus of an interview with LS Securities analyst Lee Jae-gwang. He attributed much of the recent underperformance in defense shares to a rotation of capital toward semiconductors, a pattern that persists whether chips rally or fall, compounded by a lack of major new order momentum and Korea's failed bid for Canada's submarine program, which weighed on sentiment.
Comparing enterprise value to order backlog, Hanwha Aerospace and Hanwha Systems trade at relatively higher multiples while LIG Nex1 and Korea Aerospace Industries (KAI) trade lower, suggesting the latter are undervalued on a backlog basis. On a forward-earnings valuation basis, however, the picture reverses, with Hanwha names looking cheaper, reflecting that their margins and earnings are already well reflected in results, whereas LIG Nex1 and KAI's order backlogs have not yet fully converted into earnings.
Lee advised against reading too much into quarterly defense earnings and instead urged investors to track order backlog trends as the key metric, noting that defense is a classic order-driven business where meaningful stock gains typically occur around major order/export announcements and again once those orders convert into confirmed earnings.