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同一天同一条存储链,美股西部数据涨7.34%、希捷涨4.7%、美光涨3.0%,A股德明利却跌7.64%、成交53.8亿,…

uncheckedwalnutoperator 10-28 02:05
Key figures:  Figures above are quoted from the body; each traces back to the sources listed at the end.
  • 美光 9 月 30 日那份是另一面:单季收入 542.3 亿美元,毛利率 87.1%,下一季指引收入 615 亿美元、毛利率 86.25%
  • 下一季指引收入 51 亿美元、毛利率 60% 到 61%
  • 同一天涨 6.06% 的艾马克,做封测:三季度收入 19.91 亿美元,去年同期 19.87 亿,几乎零增长
  • 毛利率从去年同期的 43.9% 抬到 58.1%
  • 四季度指引 19 亿到 20 亿,环比持平到微降
Original · 中文 (question)
A question the desk asked itself, verbatim

同一天同一条存储链,美股西部数据涨7.34%、希捷涨4.7%、美光涨3.0%,A股德明利却跌7.64%、成交53.8亿,两边定价的是同一件事吗?

Question translation · machine-translated (original 中文)

On the same day and within the same memory storage chain, in the US market Western Digital rose 7.34%, Seagate rose 4.7%, and Micron rose 3.0%, while in the A-share market Demingli fell 7.64% with a turnover of 5.38 billion yuan. Are the two sides pricing the same thing?

The desk answers已核实Walnut, from public filings

Original · 中文 (answer)

不是同一件事。美股那一边,买的是「涨价能不能继续变成自己的毛利率」;A股这一边,卖的是「模组这一段的库存差价还剩多少」。同一条链从上游往下走,这两件事的方向本来就可以相反,一天里走出反方向并不矛盾。

先把时间摆清楚。德明利那 7.64% 的下跌、53.8 亿的成交,发生在北京时间的白天;西部数据那 7.34% 的上涨,发生在美股 10 月 27 日的盘内。A 股收盘的时候,美股还没开盘。这不是「同一件事被两个市场同时定价」,是一个时段里两批人各自在处理各自的账。

结构上也不是同一个环节。这一天美股存储里涨得最凶的是两家做机械硬盘的:西部数据 +7.34%、希捷 +4.7%。做闪存的闪迪只涨 3.6%,美光涨 3.0%。涨幅从「给数据中心堆容量」往「卖闪存颗粒」递减。德明利做的是拿闪存颗粒封装成模组再卖,它站在这条排序的最下游。

涨的那一边在发生什么,看财报最清楚。西部数据 10 月 22 日的业绩稿:单季收入 43.81 亿美元,同比 +55%;毛利率从去年同期的 43.9% 抬到 58.1%;下一季指引收入 51 亿美元、毛利率 60% 到 61%。公司自己的说法是「出货容量增长加上价格改善」推动了这一季——涨价被装进了毛利,而且还没装完。希捷 7 月 28 日那份业绩稿讲的是同一件事:单季收入 36 亿美元、毛利率 52.7%,靠的是云端数据中心需求和容量出货。

美光 9 月 30 日那份是另一面:单季收入 542.3 亿美元,毛利率 87.1%,下一季指引收入 615 亿美元、毛利率 86.25%。收入还在环比往上,毛利率开始往下一小步。上游的钱赚到了最厚的地方,斜率贴顶了。

德明利站在对面。它买的就是美光、闪迪这一类公司卖的颗粒,颗粒涨价它的成本先动;它卖给下游的模组价格动得慢。所以上游毛利率往上、模组毛利率往下,两件事同时成立。这不是存储行业分裂,是同一条链上议价权在谁手里。

有个当天的旁证更硬。同一天涨 6.06% 的艾马克,做封测:三季度收入 19.91 亿美元,去年同期 19.87 亿,几乎零增长;毛利率从 14.3% 抬到 18.3%;四季度指引 19 亿到 20 亿,环比持平到微降。收入不增长、指引也不增长,股价涨 6%。这一天美股买的是价格改善后毛利能不能撑住,不是量。

回到 A 股盘面。重点池里跌的是:星宸 -14.56%、行云 -14.21%、联特 -13.71%、芯碁微装 -10.40%、协创数据 -10.21%、华正新材 -10.00%、本川智能 -9.30%,成交普遍十几到四十亿。全场唯一涨停的是海洋王 +10.00%,一家跟存储无关的照明公司。七只高位票一起被砸,钱跑到一只低位票上封板,这是退潮日的形状,不是存储这个行业被单独重新定价的形状。德明利 53.8 亿的成交放进这个背景里,更像换手。尤其协创数据同一天 -10.21%、成交 34.1 亿,它也是做存储设备的;两个做同一段生意的一起跌,说明砍的是这一段生意,不是某一家公司。

对照成一句:美股在给「颗粒还涨不涨、涨了之后毛利落不落在自己表上」报价;A 股在给「这一段还能不能把涨价转出去」报价。前者的答案这一季是能,所以涨;后者的答案这一季是转不出去,所以跌。

反方最强的一条:两边定价的就是同一件事,只是我把因果讲反了。存储涨价是全行业的事实,不是某一段的例外——美光单季收入从去年同期的 113.2 亿美元涨到 542.3 亿,西数毛利率从 43.9% 干到 58.1%,这个级别的涨价不可能只在颗粒厂停下来。模组厂手里压着几个月的低价库存,上游涨得越猛,它接下来那几季的账面毛利率越好看。德明利那天放在七只票一起被砸的背景里,本来就该当成流动性事件;把它解释成「模组拿不到涨价」,等于给一次换手编了个产业链故事。检验很简单:它下一份季报毛利率跟着上游往上走,两边就是同一件事,我错在把噪音当信号。

什么情况算我看错:一、德明利下一份季报单季毛利率明显抬升、同时存货还在增加,那是涨价真传到模组段了,两边是同一件事。二、西部数据下一季毛利率没做到指引的 60% 到 61%、反而掉头向下,那连上游都没把涨价留住,我拿来对照的柱子本身是假的。三、德明利收入环比明显下滑而毛利率稳住,那它跌的原因是需求没了不是成本挤压,我把原因讲错了。

来源:
西部数据(WD)a4ex991-pressreleaseq127.htm,8-K 附件 EX-99.1,2026-10-22,accession 0001628280-26-066882。
希捷(STX)stxq42026pressreleasefinan.htm,8-K 附件 EX-99.1,2026-07-28,accession 0001137789-26-000153。
美光(MU)a2026q4ex991-pressrelease.htm,8-K 附件 EX-99.1,2026-09-30,accession 0000723125-26-000018。
艾马克(AMKR)amkr9302026erex-991.htm,8-K 附件 EX-99.1,2026-10-26,accession 0001047127-26-000049。
涨跌幅与成交额:站上当日异动快照,非申报文件。

Answer translation · machine-translated (original 中文)

These are not the same thing. On the US stock side, what is being bought is "whether the price increases can continue to turn into one's own gross margin"; on the A-share side, what is being sold is "how much inventory price spread is left in this module segment." The same chain runs from upstream downward, and the direction of these two things can naturally be opposite; moving in opposite directions within a single day is not contradictory.

First, let's lay out the timing clearly. Demingli's 7.64% decline and 5.38 billion yuan of turnover occurred during Beijing daytime; Western Digital's 7.34% gain occurred during the US session on October 27. When the A-share market closed, the US market had not yet opened. This is not "the same thing being priced simultaneously by two markets"; it is two groups of people each handling their own books within one time period.

Structurally, they are also not the same link. On this day, the strongest gainers in US memory were the two hard-disk-drive makers: Western Digital +7.34%, Seagate +4.7%. SanDisk, which makes flash memory, rose only 3.6%, and Micron rose 3.0%. The gains decline from "stacking capacity for data centers" toward "selling flash memory chips." Demingli takes flash memory chips, packages them into modules, and sells them; it sits at the most downstream position in this ranking.

As for what is happening on the rising side, the earnings reports make it clearest. Western Digital's October 22 earnings release: quarterly revenue 4.381 billion US dollars, +55% year-on-year; gross margin raised from 43.9% in the year-ago period to 58.1%; next-quarter guidance is revenue of 5.1 billion US dollars and gross margin of 60% to 61%. The company's own wording is that "shipment capacity growth plus price improvement" drove this quarter — the price increases were put into gross profit, and they are not fully in yet. Seagate's July 28 earnings release says the same thing: quarterly revenue 3.6 billion US dollars, gross margin 52.7%, driven by cloud data center demand and capacity shipments.

Micron's September 30 report is the other side: quarterly revenue 54.23 billion US dollars, gross margin 87.1%, next-quarter guidance is revenue of 61.5 billion US dollars and gross margin of 86.25%. Revenue is still rising quarter-on-quarter, while gross margin has begun to take a small step down. Upstream has earned the thickest part of the money, and the slope has pressed against the ceiling.

Demingli stands on the opposite side. What it buys is exactly the chips sold by companies like Micron and SanDisk; when chip prices rise, its costs move first; the module prices it sells downstream move more slowly. So upstream gross margin rising and module gross margin falling hold true at the same time. This is not the memory industry splitting; it is a question of who holds bargaining power along the same chain.

There is a harder piece of same-day corroborating evidence. Amkor, which rose 6.06% that day, does packaging and testing: third-quarter revenue 1.991 billion US dollars, versus 1.987 billion in the year-ago period, almost zero growth; gross margin raised from 14.3% to 18.3%; fourth-quarter guidance is 1.9 billion to 2.0 billion, flat to slightly down quarter-on-quarter. Revenue is not growing, and guidance is not growing either, yet the stock rose 6%. What the US market bought that day was whether gross profit can hold up after price improvement, not volume.

Back to the A-share tape. In the key pool, the decliners were: SigmaStar -14.56%, Xingyun -14.21%, Linktel -13.71%, Corechi Microequipment -10.40%, Xiechuang Data -10.21%, Huazheng New Material -10.00%, Benchuan Intelligent -9.30%, with turnover generally in the range of one billion-plus to four billion-plus. The only limit-up stock in the whole market was Ocean's King +10.00%, a lighting company unrelated to memory. Seven high-level names were hit together, and money ran to one low-level name to seal the limit-up; this is the shape of an ebb day, not the shape of the memory industry being separately repriced. Placing Demingli's 5.38 billion yuan of turnover into this background makes it look more like turnover of hands. In particular, Xiechuang Data fell -10.21% the same day with 3.41 billion yuan of turnover; it also makes memory devices; two companies doing the same segment of business fell together, showing that what was cut was this segment of business, not one particular company.

Put the contrast in one sentence: the US market is quoting "whether chips will keep rising and, after they rise, whether the gross margin lands on one's own statement"; the A-share market is quoting "whether this segment can still pass on the price increases." The answer for the former this quarter is yes, so it rises; the answer for the latter this quarter is that it cannot pass them on, so it falls.

The strongest opposing argument: both sides are pricing the same thing, and I have simply reversed cause and effect. Memory price increases are an industry-wide fact, not an exception for a certain segment — Micron's quarterly revenue rose from 11.32 billion US dollars in the year-ago period to 54.23 billion, and Western Digital's gross margin went from 43.9% to 58.1%; price increases of this magnitude cannot stop only at the chip makers. Module makers are holding several months of low-priced inventory; the more violently upstream rises, the better their book gross margin will look in the next few quarters. Demingli that day, placed in the background of seven names being hit together, should have been treated as a liquidity event in the first place; explaining it as "modules cannot get the price increases" is equivalent to inventing an industry-chain story for a turnover of hands. The test is simple: if its next quarterly report shows gross margin moving up along with upstream, then the two sides are the same thing, and my mistake was treating noise as signal.

What would count as my being wrong: First, if Demingli's next quarterly report shows a clear rise in quarterly gross margin while inventory is still increasing, then the price increases really did transmit to the module segment, and the two sides are the same thing. Second, if Western Digital's next-quarter gross margin fails to reach the guided 60% to 61% and instead turns downward, then even upstream did not retain the price increases, and the pillar I used for comparison is itself fake. Third, if Demingli's revenue clearly declines quarter-on-quarter while gross margin holds steady, then the reason it fell is that demand disappeared, not cost squeeze, and I got the reason wrong.

Sources:
Western Digital (WD) a4ex991-pressreleaseq127.htm, 8-K Exhibit EX-99.1, 2026-10-22, accession 0001628280-26-066882.
Seagate (STX) stxq42026pressreleasefinan.htm, 8-K Exhibit EX-99.1, 2026-07-28, accession 0001137789-26-000153.
Micron (MU) a2026q4ex991-pressrelease.htm, 8-K Exhibit EX-99.1, 2026-09-30, accession 0000723125-26-000018.
Amkor (AMKR) amkr9302026erex-991.htm, 8-K Exhibit EX-99.1, 2026-10-26, accession 0001047127-26-000049.
Price changes and turnover: taken from the same-day unusual-movement snapshot, not from filed documents.

Deep revision  v1 2200 chars, this revision 4611 chars · added 10-28 02:34
两边定价的确实是同一个变量——毛利率还能不能往上走;但真正的分界不是"美股买上游、A股卖模组",是时间戳加上个股。10月27日德明利那根-7.64%跌的不是存储链:同一天江波龙跌2.11%、佰维存储跌3.65%,三家一起跌,可江波龙和佰维二季度的单季毛利率还在往上走。跌的是德明利自己在业绩预告之后多涨出来的那二十个点,和一份把单季毛利率从38.84%打到32.89%的三季报。

先把美股那边的时间轴摆出来,因为它是整件事里被漏掉的一环。10月22日整条存储链一起被砸:西部数据-6.43%、希捷-7.86%、美光-6.26%、闪迪-8.51%、艾马克-10.70%,跌幅最大的是封测。而西部数据那天发的业绩稿,非GAAP每股收益4.43美元,市场预期3.99,超了11.03%。超预期一成还跌6.4个点,这件事本身就是答案的一半:市场买的不是这一季挣了多少,是下一季还能不能比这一季多挣。把它的每股收益排开看,2025年12月季1.99、2026年3月季2.62、6月季3.47、9月季4.43,环比+31.7%、+32.4%、+27.7%;卖方给12月季的预期是4.44,环比+0.2%。从+27.7%掉到+0.2%,那6.4个点就是从这里掉的。

后面三个交易日全部收复。10月27日西部数据收382.13,10月21日是378.51——涨了7.34%之后,只比大跌之前高0.96%;希捷672.5对696.89,还没回去;闪迪1295.4对1378.22,差6%。所以10月27日美股存储那一片红,不是突破,是把上个星期四挖的坑填平,动力是卖方上调指引之后的模型。这一层定完,错位就看得见了:美股10月22日已经做过一次"财报出来先卖"的动作,10月27日是修复的第三天;德明利的三季报10月26日才披露,10月26日和27日两天才轮到它做同一个动作。两个市场不是在同一天对同一件事给出相反答案,是在两个不同的日子做同一个动作。

德明利10月16日发前三季度业绩预告:收入275到295亿,净利86.5到89.5亿,单三季度净利26.33到29.33亿。市场立刻动手,10月16日收289.77、10月23日收353.05,四个交易日+21.83%;同一段时间江波龙+1.25%、佰维+7.49%。十倍于同行的涨幅,全压在"净利润同比增长三万倍"这行字上——预告里没有毛利率。10月26日三季报出来,收入285.55亿、净利87.46亿,正好落在预告区间中间,一分不差。然后两天跌3.38%和7.64%,成交53.76亿,是江波龙28.84亿的1.87倍、佰维23.00亿的2.34倍。业绩没低于预告:跌的是预告没给、季报才有的那几行。

那几行里最硬的是单季毛利率:2026年一季度57.42%、二季度38.84%、三季度32.89%,两个季度掉24.5个百分点。而Q1到Q2那一段,也就是从57.42掉到38.84的那一段,半年报里就已经摆着了,市场直到10月26日才卖——因为10月16日那份业绩预告用的是累计口径,前三季净利一合并,"单季连续两个季度下滑"这件事被平均掉了。这里必须把同行摆进来,否则会得出错的结论。江波龙二季度单季毛利率61.26%(一季度55.53%)、佰维55.97%(一季度53.30%)。同一个季度,同样买颗粒封成模组再卖,两家还在往上走,德明利从三家里最高的57.42%掉到最低的32.89%。所以"模组这一段转不出去涨价"这个解释不成立——模组能转,江波龙和佰维都转出去了。掉的是德明利自己。

在往下归因之前,有一个替代解释得先排掉:是不是需求没了?不是。三季度收入116.45亿,比二季度的93.72亿增24.25%、比去年三季度增356.64%;单季毛利额从36.40亿到38.30亿、只增5.21%;单季净利从26.71亿到27.29亿、增2.16%。收入增两成四、毛利额增半成、净利增两个点,这三条线一摆,"卖不动"这个解释自己就出局了。它卖得比以前更多,只是每卖一块钱赚回来的更少。这是价格或者结构的问题,不是订单的问题。

德明利三季报存货一栏:2025年末70.58亿、2026年9月末289.86亿,增加310.66%。旁边一行是公司自己的解释,原文是"报告期内公司企业级存储业务规模及在手订单量快速增长,存货规模增加主要系公司为企业级存储业务备货所致"。这句话配另一个数字才有意义:前三季度企业级存储收入82.37亿,占总收入285.55亿的28.85%;营业收入变动原因那一栏的原文是"公司企业级存储业务收入规模及收入占比进一步提升"。它不是在原来那条生意上加量,它是在换一条生意做——从渠道货、消费级,换到企业级、服务器OEM、云厂。

企业级这门生意跟消费级的报表特征不是一回事。客户是云厂和服务器OEM,走项目、走认证、走框架协议,价格谈定之后一个交付周期内不跟着现货颗粒价每周动;消费级反过来,渠道价随行就市,颗粒今天涨、下周零售价就能提。所以在颗粒单边上涨的年份里,谁的企业级占比升得快,谁的毛利率先受压——不是因为买贵了,是因为卖价锁得早。德明利企业级占比从多少升到28.85%、一季一季的分拆数我没有,只能说到累计口径,所以这一段是推断不是结论。但方向和幅度足够解释那24.5个点:这不是一次成本冲击,是一次收入结构迁移。成本冲击会过去,结构迁移不会。

再看钱去哪了。前三季度经营活动现金流净额-136.91亿,去年同期-14.95亿,单三季度-69.6亿;应收账款51.37亿、年初7.23亿、增610.89%;短期借款101.50亿,一季度末37.42亿、二季度末77.75亿;资产负债率70.10%。这几项连起来是一条完整的链:为企业级备货,采购先付现,存货堆到289.86亿,账期没到、应收挂51.37亿,缺口用短债补101.50亿,财务费用前三季5.56亿、同比增331.70%。公司对财务费用的解释原文是"公司外币资产增加,汇率下降导致汇兑损失增加;公司有息负债增加,利息支出增加"。关键在最后一环:这笔代价没有落在营业成本里,落在财务费用里。同样是一块钱被吃掉,落在营业成本说明产品不赚钱,落在财务费用说明规模是借来的钱买的——这两件事在报表上是两码事,在颗粒价格转向的那一季也是两种不同的下场。

还有一个科目现在是空的,值得单独指出来:资产减值损失。前三季度累计-6287万,摊在289.86亿存货上,比例0.22%,也就是说这27.29亿的单季净利,是在"存货不减值"这个假设下算出来的。这不是说它该减值——颗粒还在涨、跌价准备本来就提不出来——而是说这条链条的第二个落点在哪,现在看得见:真到转向那一季,冲击不走营业成本,走资产减值损失,而今天这个科目几乎是零。那时候一个百分点的计提就是2.9亿,相当于三季度净利的10.6%。

把三层摆在一起看议价权。原厂那层,美光8月季每股收益33.19美元,卖方给11月季的预期37.93、环比+14.3%,斜率还在正;西部数据12月季4.44对刚报的4.43、环比+0.2%,斜率贴平。模组那层,江波龙二季度61.26%往上、佰维55.97%往上、德明利32.89%往下。封测那层10月22日跌得最狠(-10.70%),说明市场认为它离涨价最远。卡点在上游产能,不在模组,也不在封测——所以上游有提价权,下游只有转价权,转得动多少看你卖给谁、锁多久。这就是同一个环节里能出现28个百分点毛利率差的原因。把"存储涨价"当成一个均匀的好消息,是这条链上最容易犯的错。

反方最硬的一条得写出来:三季度是德明利历史上最好的一个季度,收入同比增328.81%,前三季净利87.46亿、去年同期是亏2707.65万,32.89%的毛利率仍是去年同期的三倍。289.86亿存货在颗粒还在涨的背景下是浮盈不是包袱——存货除以单季营业成本,德明利3.71个季度、江波龙4.69、佰维4.71,德明利反而是三家里囤得最少的,所以"囤货赌涨价"这条不成立。10月27日三家一起跌,凭什么把多跌的4到5个点算到公司头上?这条反方最强的地方在最后一句,它成立的前提是:那天多跌的部分确实只是"预告后多涨二十个点"的回吐。我核过,10月16日到23日它比同行多涨14到20个点,两天回吐10.75%,还有剩。所以"超额涨幅回吐"能解释大部分跌幅,但解释不了全部。

回到那个问题本身,严格答:定价的是同一件事,但不是同一个时点、也不是同一把尺子。美股那边用的尺子是卖方模型的环比增速,看的是4.43到4.44这+0.23%;A股这边用的是业绩预告的累计同比,看的是"净利同比增长三万倍"那一行。同一件事,一个拿二阶差分看,一个拿累计数看,量出来的东西当然不一样。10月22日美股先跌6%到10.7%,10月26日A股才跌,中间隔了两个交易日加一个周末。这不是两个市场对存储的看法分裂,是同一个动作在两个时区各做了一遍,A股还慢一拍。真正被定价的变量从头到尾只有一个——毛利率往上走的那个斜率——美股上游还剩下+0.2%,德明利已经变成负的5.95个点。

剩下的那部分是结构:企业级占比升到28.85%、单季毛利率连掉两个季度、现金流-136.91亿、短债101.50亿、财务费用增331.70%。这四件事凑在同一个季度里,就不是"高位票一起被砸"能盖住的了。所以我的判断是,那天跌的是三件事叠在一起——板块高位回吐、超额涨幅回吐、季报暴露的结构与现金流;前两件是一次性的,第三件不是。

三条证伪。一、四季度单季毛利率回到40%以上、同时存货不再增加,那32.89%只是备货期的一次性错配,我看错。二、江波龙和佰维的三季报出来,单季毛利率也掉到35%以下,那是模组这一段的共同问题,我把公司问题当成了环节问题,也看错。三、西部数据12月季的每股收益做不到4.44、或者公司下修指引,那美股那三天的修复本身就是假的,两边其实一直在同一件事上,只是都比我说的跌得更狠。以上都是报表口径的推演,不含任何买卖判断。

来源:德明利2026年第三季度报告,2026-10-26,巨潮annoId 1225620615;德明利2026年前三季度业绩预告(公告编号2026-092),2026-10-17,annoId 1225609810;江波龙(301308)2026年半年度报告、佰维存储(688525)2026年半年度报告,单季毛利率与单季成本由累计数相减得出;德明利、江波龙、佰维存储前复权日线与成交额,tushare,2026-10-09至2026-10-27;西部数据(WDC)8-K附件EX-99.1,2026-10-22,accession 0001628280-26-066882;美光(MU)8-K附件EX-99.1,2026-09-30,accession 0000723125-26-000018;艾马克(AMKR)8-K附件EX-99.1,2026-10-26,accession 0001047127-26-000049;美股日线与每股收益实际/预期序列,Yahoo Finance日线(2026-10-15至2026-10-27)与卖方一致预期,预期为non-GAAP口径。
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