市场的看法分歧。乐观派认为记忆体已进入AI时代的新结构：记忆体越来越直接与AI加速器蓝图共同设计，且开始与超大型云端玩家签长期合约；但质疑者仍强调历史上盈余周期性极高。供给端如果落后会再现缺货与涨价，过去亦曾在需求放缓时供给超前，因此新增产能的时点与幅度是核心风险。Christine Phillpotts指出这是关键变数，Polar的Jorry Noeddekaer则称早期循环风险报酬看起来更有吸引力，现阶段相较TSMC的结构性成长更不明朗。
尽管估值争论存在，股价表现已非常强劲：Samsung自8月末以来约上涨三倍，SK Hynix约四倍，而TSMC仅上涨77%。共识预估的2026–2027净利为Samsung 1510亿美元、SK Hynix 1150亿美元、TSMC 810亿美元（原始资料为$151 billion、$115 billion、$81 billion），显示盈利落差仍扩大；若此增长证明可持续，估值可能被迫抬升。Yacktman的Molly Pieroni认为相较Nvidia，现有Samsung估值仍具吸引力。SK Hynix将于周四财报，Samsung则下周公布，市场或仍需更多财报来确认此轮回报是否可持续。
Memory makers are riding surging AI demand with big stock gains and profit upside, yet their valuation remains notably discounted. As of the Asia-market close on Wednesday, Samsung Electronics is estimated to grow net income by 400% this year and SK Hynix by around 300%, versus about 50% for TSMC. Yet their forward P/E is below 6x, while TSMC is about 19x and Nvidia about 22x; other memory and storage names such as Micron and Kioxia remain mostly below 10x.
Investors remain split. Bulls argue this is a new AI-era structure: memory is increasingly co-designed with AI-accelerator roadmaps and increasingly sold through long-term contracts to hyperscalers. Skeptics still stress that memory earnings have historically been highly cyclical. If supply lags, shortages and price spikes appear; if demand slows, previous cycles have seen supply surge ahead of need, so timing and scale of capacity additions are the key risk. Christine Phillpotts said this is the central uncertainty, while Polar’s Jorry Noeddekaer said the risk-reward looked more attractive earlier in the cycle than now versus TSMC’s stronger structural growth.
Despite valuation debate, price performance is already strong: Samsung is up roughly threefold since late August and SK Hynix roughly fourfold, while TSMC is up 77%. Consensus 2026–2027 net income forecasts put Samsung at $151 billion, SK Hynix at $115 billion, and TSMC at $81 billion, showing a widening profit gap. If that growth proves durable, re-rating pressure could increase. Yacktman’s Molly Pieroni argues Samsung’s current valuation is still compelling versus Nvidia. SK Hynix reports on Thursday and Samsung next week, and markets may still need more data before accepting that these returns can persist.