美股内存股强劲反弹,闪迪因何大涨26%

投研日志Pubblicato 2026-07-31Pubblicato ultima volta 2026-07-31

Introduzione

7月暴跌的警告仍未离去。内存股在上半年曾出现抛物线式上涨,价格已包含极高的盈利预期。

7月30日,美股AI和半导体大涨。其中,闪迪在暴跌后形成高波动的V形修复,但远未收复7月跌幅。

  当地时间7月30日,美股强劲反弹,人工智能(AI)和半导体成为主线。

  道琼斯工业平均指数收于52208.06点,涨613.92点,涨幅1.19%;标普500指数收于7437.63点,涨121.48点,涨幅1.66%;纳斯达克综合指数收于25122.18点,涨679.24点,涨幅2.78%。

  “七巨头”涨势分化明显。微软大涨15.51%,收于451.10美元,强劲财报和云业务增长缓解了市场对AI资本开支的担忧。英伟达涨2.65%,亚马逊涨3.90%,特斯拉涨3.53%;苹果跌1.41%,谷歌母公司字母表跌(Alphabet)0.91%,Meta Platforms(脸书母公司)跌7.95%。

  内存和AI半导体领涨。美光涨18.36%,收于874.66美元;闪迪涨25.99%,收于1279.96美元;西部数据涨15.37%,希捷涨11.41%,博通涨4.73%。安硕半导体交易型基金涨8.50%,费城半导体指数当日涨约8%。

  闪迪在暴跌后形成高波动的V形修复,但远未收复7月跌幅。盘中一度最高达到1365美元,较前收盘最高上涨34.37%,收报1279.96美元,单日上涨264.1美元。

本轮回弹来自整个AI与半导体板块,而非闪迪单独发布了重大利好。微软财报显示Azure增长强劲,市场重新相信大型科技公司的AI投入正在转化为收入和利润,带动存储器、处理器及半导体设备股集体反弹。

  此外,无论是在芯片股还是内存股范围内,闪迪在过往波段中的涨幅和跌幅都是最夸张的,以6月30日收盘价2273.73美元计算,即使7月30日暴涨26%,其股价截至当天仍累计下跌43.71%。换句话说,本次暴涨更多是在修复前期踩踏,而不是重新回到原来的价格中枢。

  闪迪已确定于8月5日公布2026财年第四季度及全年业绩。在业绩窗口临近时,空头止盈、投资者抄底和期权对冲容易互相强化。

  微软最新季度收入及利润均超过市场预期,Azure及其他云服务收入同比增长43%,微软云收入增长27%至593亿美元;公司同时表示,2026年资本支出预期没有改变。对内存产业而言,这组数据的重要性在于:全球最大的AI基础设施买家仍在扩建算力,而新增服务器不只需要GPU,也需要高带宽存储器(HBM)、服务器DRAM和企业级固态硬盘。此前市场担心云厂商削减投资,微软的业绩至少暂时打消了这一疑虑。

  HBM需要更复杂的堆叠和封装,占用更多晶圆产能;生产商将产能优先分配给HBM和服务器DRAM,又进一步挤压传统DRAM与NAND闪存供应。彭博援引产业人士判断,全球基础晶圆供给相对需求仍存在两成以上缺口,紧张状况可能延续数年。这也是美光、SK海力士和三星能够维持定价权的核心原因。

  7月暴跌的警告仍未离去。内存股在上半年曾出现抛物线式上涨,价格已包含极高的盈利预期。近期市场担忧主要集中在三点:其一,微软、Meta、Alphabet和亚马逊的AI投入规模越来越大,但自由现金流和投资回报能否同步增长仍待验证;其二,三星、SK海力士和美光均在加快扩产,2027年以后供给增加可能削弱议价能力;其三,中国内存厂商长鑫存储的扩张和上市,使市场重新评估成熟DRAM领域的竞争格局。此外,高利率和长端美债收益率上升,也被认为会放大高波动科技股的估值压力。

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