SNDK +20%! Valuation Logic Has Structurally Shifted By Nvidia?

$S&P 500(.SPX)$ and $Dow Jones(.DJI)$ both closed at record highs. The Dow rose 0.99% to 49,462.08, historically breaking through the key psychological level of 49,000. The S&P 500 also set a new record, gaining 0.62% to close at 6,944.82.

As January goes, so goes the year. When January closes positive, the S&P 500 is higher 89% of the time, with an average gain of 17% and an average maximum drawdown of 10.5%. When January is negative, average returns fall to -1.8%, with only a 50% hit rate and deeper market drawdowns.

Beyond the January Effect: Capital Is Looking at Memory

Capital is accelerating its rotation away from extremely crowded AI mega-cap leaders and spreading deeper into the supply chain. This “decentralized” rotation not only improves market breadth, but also triggers a broad-based revaluation across the entire semiconductor supply chain.

$SanDisk Corp.(SNDK)$ surged 27.56%, $Micron Technology(MU)$ jumped 10.02%, $Western Digital(WDC)$ soared 16.77%, and $Seagate Technology PLC(STX)$ climbed 14%—all posting double-digit gains.

SanDisk and Western Digital focus on high-speed flash storage; Micron is the leading player across HBM and DRAM; Seagate represents long-term memory for AI workloads.

At CES, NVIDIA unveiled its “Inference Context Memory Storage Platform,” sending a very clear signal: AI has entered a new phase of long context + intelligent agents. Inference is no longer just about how fast GPUs can compute, but whether memory can be fast enough, cheap enough, and scalable enough to keep up.

In the past, AI memory roles were clearly divided:

  • HBM sat right next to GPUs for ultra-fast computation—but at a high cost.

  • DRAM served as working memory for data turnover.

  • NAND (SSDs) acted as remote warehouses for long-term storage.

Now the challenge is different. When models need to process hundreds of millions of tokens and maintain “long-term memory,” the KV cache generated during inference can balloon to the terabyte level. Storing everything in HBM is prohibitively expensive; pushing it to remote storage leaves GPUs idle, wasting compute power.

What NVIDIA has done this time is essentially create a new intermediate memory layer between GPU memory and hard drives. Through the BlueField-4 DPU, enterprise-grade NAND flash is integrated directly into racks and positioned closer to GPUs. SSDs—once purely backend components—are now participating in real-time inference for the first time.

By pulling NAND into the core of AI inference at CES, NVIDIA has moved storage from the background to the front line. The entire storage sector has been revalued in one stroke.

Historically, storage stocks were treated as cyclical plays, because no one could accurately estimate how much storage an AI data center would need. Now, as storage becomes a standardized rack-level component, demand can be linearly modeled based on GPU rack counts for the first time. Once demand becomes quantifiable, valuations naturally rise.

At the same time, supply-demand imbalances provide additional catalysts. HBM is crowding out capacity, compressing supply of general-purpose DRAM and pushing prices into a sustained upcycle. NAND, meanwhile, is upgrading from “cheap, high-capacity storage” to a “quasi-memory layer,” driving a re-rating in both volume and pricing. This is why the market lifted flash, DRAM, and integrated storage companies simultaneously on the same day.

So the question now is:

  1. Is it too risky to chase memory stocks at these levels?

  2. Which name do you favor most in the memory space—SNDK or the all-around leader Micron?

  3. Is it better to buy at the start of the year, or wait for the January effect to play out and add during earnings season?

  4. Do you believe in the January effect?

Leave your comments to win tiger coins~

# After the Storage Rally, A Healthy Reset or a Trend Reversal?

Disclaimer: Investing carries risk. This is not financial advice. The above content should not be regarded as an offer, recommendation, or solicitation on acquiring or disposing of any financial products, any associated discussions, comments, or posts by author or other users should not be considered as such either. It is solely for general information purpose only, which does not consider your own investment objectives, financial situations or needs. TTM assumes no responsibility or warranty for the accuracy and completeness of the information, investors should do their own research and may seek professional advice before investing.

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  • koolgal
    ·01-08 07:37
    TOP
    🌟🌟🌟The market today is a stark contrast to yesterday's sizzling excitement.  The Fast and Furious rally hit a wall and giants like $SanDisk Corp.(SNDK)$ have indeed come back to earth. 

    This sudden cooldown in the memory chip stocks highlights the intense volatility of the current market and the constant battle between hype and fundamentals.

    Yesterday's euphoria was fueled by $NVIDIA(NVDA)$ CES 2026 announcement and the projected 60 to 70% price hikes for memory chips in Q1.  This caused investors to rush in, sending SanDisk up over 27% in a single day.

    Today, the January Effect excitement is cooling.  Investors are now pondering the boom & bust history of the memory cycle and wondering if the current price is a peak.

    I believe that the current dip is just a pause before the pace picks up again for the memory chip stocks.

    The fundamental demand for HBM4 and advanced computing power is structural, not cyclical.
    So it is important to have a long term horizon when investing.

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    • icycrystal
      thanks for sharing
      01-08 17:00
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  • Aqa
    ·01-07
    TOP
    Donald Trump has just seized a second Russian-flagged oil tanker and the $S&P 500(.SPX)$, $Dow Jones(.DJI)$ and $NASDAQ(.IXIC)$ were all shaken at today’s market opening. The stock rally would lose some steam this week. Since the valuation logic of AI-related stocks has been structurally shifted by Nvidia, and AI memory stocks are rallying upwards, it is too risky to chase memory stocks at their high level. Both $SanDisk Corp.(SNDK)$ and $Micron Technology(MU)$ are on my watchlist for long term investment. With Trump’s Venezuela missives slamming the brakes on stock rally presently, it is worth waiting a bit for the stocks pullback to buy the dips. Thanks @Tiger_comments @TigerStars @Tiger_SG
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    • icycrystal
      thanks for sharing
      01-08 07:47
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  • Shyon
    ·01-07
    TOP
    I see short-term risk in chasing memory stocks after sharp spikes, but this is a structural re-pricing, not just momentum. NVIDIA $NVIDIA(NVDA)$ bringing NAND into AI inference changes storage from a backend cost into a core AI bottleneck. I wouldn’t chase highs aggressively, but I don’t think this is a quick “sell the news” move either.

    Between the names, I prefer Micron $Micron Technology(MU)$ . It sits at the center of HBM tightness, DRAM pricing power, and NAND’s role upgrade, while SanDisk $SanDisk Corp.(SNDK)$ and Western Digital $Western Digital(WDC)$ offer higher beta but narrower exposure. Micron gives me broader participation and better balance if volatility picks up.

    On timing, I believe in the January effect as a probability edge, not a rule. I’d rather build positions early and add on earnings volatility than wait for a perfect pullback that may not come.

    @Tiger_comments @TigerStars @TigerClub

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  • icycrystal
    ·01-07
    TOP
    @koolgal @Aqa @LMSunshine @SPACE ROCKET @nomadic_m @Shyon @rL @GoodLife99 @HelenJanet @Universe宇宙

    Is it too risky to chase memory stocks at these levels?


    Which name do you favor most in the memory space—SNDK or the all-around leader Micron?


    Is it better to buy at the start of the year, or wait for the January effect to play out and add during earnings season?


    Do you believe in the January effect?


    Leave your comments to win tiger coins~

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    • Shyon
      [What] [What] [What]
      01-08 08:47
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  • BTS
    ·01-10 03:43
    The 20% surge in SanDisk Corp (SNDK) points to growing optimism driven by NVIDIA Corp (NVDA); however, this could signal a fundamental revaluation, caution advised for short-term volatility。。。

    Memory stocks trade at elevated multiples, which could present risk if earnings growth does not meet expectations; potential for short-term corrections remains high despite long-term AI-driven growth

    Micron Technology (MU) offers strong fundamentals and leadership in DRAM, a solid pick for long-term investors; SNDK shines in flash storage with potential in mobile and automotive sectors, depending on risk appetite

    Buying at the start of the year could capture early momentum, as January sets the tone; however, waiting for earnings season may offer a clearer risk/reward opportunity based on performance data

    The January effect is supported by historical patterns following year-end tax-loss harvesting; however, current market conditions in 2026 may reduce predictability, making it less reliable

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  • 這是甚麼東西
    ·01-08 12:51
    Risk Assessment: Memory stocks have risen sharply on AI optimism, which may increase near-term volatility. Fundamental metrics and analyst sentiment remain largely positive, but valuations have expanded.
    Company Profiles: MU.US is a financially strong, diversified leader with a significant HBM business and a dividend. SNDK.US is a more focused, recently independent NAND company showing a strong recovery and growth trajectory.
    Timing: Market participants often evaluate both cyclical patterns like the January effect and specific event-driven opportunities like earnings seasons. The current powerful sector trend driven by AI demand is a prominent consideration in the market.
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  • AliceSam
    ·01-07
    资本正在加速从极其拥挤的人工智能大型龙头股中转移,并向供应链更深处扩散。这种“去中心化”轮动不仅提高了市场广度,也引发了整个半导体供应链广泛的价值重估。
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  • TimothyX
    ·01-07
    過去,AI記憶角色劃分很明確:

    HBM緊挨着GPU進行超快速計算,但成本很高。

    DRAM用作數據週轉的工作存儲器。

    NAND(固態硬盤)充當長期存儲的遠程倉庫

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  • Cadi Poon
    ·01-07
    一月過去了,一年也過去了。當1月份收盤上漲時,標普500在89%的情況下走高,平均漲幅爲17%,平均最大跌幅爲10.5%。當1月份爲負值時,平均回報率降至-1.8%,命中率僅爲50%,市場回撤更深。
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  • Cadi Poon
    ·01-07
    $標普500(.SPX)$和$道瓊斯(.DJI)$均收於歷史新高。道指漲0.99%,報49462.08點,歷史性突破49000點關鍵心理位。標普500也創下新紀錄,上漲0.62%,收於6,944.82點。
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  • 北极篂
    ·01-07
    我个人不迷信一月效应,但尊重它反映的资金行为。对我来说,关键不是押时间点,而是确认:这轮行情,已经从“算力故事”,正式进化为“记忆革命”。
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  • 北极篂
    ·01-07
    至于追不追?我不太担心短期涨幅,更在意商业模型是否被永久抬升。如果存储需求可以按GPU机架线性推算,估值中枢自然会上移。SNDK弹性更强,美光胜在全栈与周期掌控,各有取舍。
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  • 北极篂
    ·01-07
    英伟达在CES把NAND直接拉进推理核心,本质是在GPU和硬盘之间创造“中间记忆层”。当AI进入长上下文和智能代理阶段,瓶颈不再只是算力,而是记忆的成本、速度与规模。HBM太贵、远端存储太慢,这个空档一旦被填补,整个存储行业就不再只是周期股,而是“可量化的基础设施”。
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  • 北极篂
    ·01-07
    过去一年,市场几乎被AI巨头“挤爆”,估值高度集中,任何风吹草动都会放大波动。现在看到的,是资本开始向AI产业链更深处扩散,尤其是存储这一层。闪迪、西部数据、美光、希捷的集体爆发,并不是短线炒作,而是叙事发生了根本变化——存储从后台资产,变成前线算力的一部分。
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  • 北极篂
    ·01-07
    标普500和道琼斯同时站上历史新高,本身就是一个很清晰的信号:这不是情绪推动的单点行情,而是资金结构正在发生变化。一月上涨固然让“一月效应”再次被提起,但我更关注的是钱正在往哪里去。
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  • icycrystal
    ·01-07
    Both Micron and SanDisk have seen massive gains (triple-digit percentages) in the past year, driven by AI demand, but take caution that the rapid appreciation puts them in "high-risk territory".

    I generally favor Micron as the better long-term AI investment because Micron is considered the "all-around leader" due to its central role in the AI supply chain as a primary supplier of high-bandwidth memory to companies like Nvidia and AMD. Its vertically integrated structure is also a key strength.

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  • AliceSam
    ·01-08 06:54
    资本正在加速从极其拥挤的人工智能大型龙头股中转移,并向供应链更深处扩散。
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  • highhand
    ·01-07
    buy the leader $Micron Technology(MU)$ safest bet. can wait for dip is better than a wave up.. there will be opportunities. be patient
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  • ECLC
    ·01-08 10:25
    Not taking risks to chase highs. Wait for dips to buy with limited funds.
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