On July 15, 2026, within the same trading day, the U.S. stock market's technology sector exhibited a rare and severe divergence: on one end, the storage chips and PC server hardware sector, which had previously benefited from AI server demand, saw a collective retreat from gains. SanDisk, Micron Technology, Western Digital, Seagate Technology, SK Hynix, and Dell Technologies generally declined during the trading session, with data from a single source indicating that SanDisk fell over 13% at one point, closing with a loss of about 9.29%, at a stock price of approximately $1,594.435 per share, with a total market capitalization of about $236.1 billion. SK Hynix briefly dropped about 9% at the start of the trading day before narrowing its losses to about 3.3%. Dell Technologies' intraday decline widened to about 13%, marking its largest intra-day correction since April 2025, reflecting a concentrated emotional impact on the AI hardware chain in a short time; on the other end, asset management and Chinese internet platforms represented by BlackRock and Alibaba took a completely opposite path on the same day. BlackRock's stock price rose over 8%, with its second-quarter revenue increasing about 31% year-on-year to $7.084 billion, and its managed assets surpassing $15 trillion, receiving recognition from the market. Alibaba's U.S. stock rose about 7.13% against the backdrop of AI cooperation rumors, closing at $120.330 per share, marking a new high since June 9, 2026, presenting a starkly opposing price signal compared to the hardware sector. This research report will focus on the disparate performance of different sub-sectors on this day, attempting to observe how the market re-evaluates cycle risks and profit imagination along the framework of "capital re-pricing and alignment within the AI industry chain" without presupposing a single negative or positive reason.
Storage Chips and PC Hardware Decline: AI Hardware Dims for a Day
In this round of internal re-pricing, capital first concentrated on withdrawing from the storage chip and PC hardware sectors. SanDisk, the most representative performer during the session, at one point dropped over 13%, and as of the time of reporting, its decline was about 9.29%, with a stock price of approximately $1,594.435 per share, corresponding to a total market value of about $236.1 billion (data sourced from a single source). This abrupt switch from the previously driven upward cycle by AI server demand to a sudden high-level sell-off is noteworthy. Micron Technology, Western Digital, and Seagate Technology, also part of the storage and hardware sectors, weakened overall on that day, exhibiting characteristics of concentrated selling around the theme of "AI computing hardware."
Overseas storage giants and PC server hardware also came under pressure. SK Hynix initially dropped about 9%, followed by a narrowing of its decline to about 3.3%, reflecting a significant increase in intra-day volatility; Dell Technologies' decline expanded to about 13%, marking the largest intra-day drop since April 2025; in the context where it was previously viewed as an AI server and PC hardware beneficiary, this retracement was particularly striking. It is important to emphasize that the research report does not provide specific trigger events for the plunge of storage chips and Dell's drop. There is currently no verified single negative source in the market, and in the absence of public information, this significant intra-day volatility becomes an important signal to observe how capital re-evaluates the cycle risks associated with AI hardware.
BlackRock's Earnings Report Surprises: Asset Management Giant Gains Media Attention
In contrast to the collective downturn of storage chips and PC hardware, on the same trading day, BlackRock's stock rose against the trend, with a single-day increase exceeding 8% (according to a single source), presenting a completely different capital flow direction among technology-related assets. The core variable driving the stock price comes from the latest earnings report: the second-quarter revenue increased approximately 31% year-on-year to $7.084 billion (according to a single source), and the assets under management surpassed $15 trillion (according to a single source), reinforcing its pricing foundation as "one of the largest asset management platforms globally" in both revenue growth and scale management dimensions. The high growth rate of revenue combined with the continuous expansion of managed scale, on one hand, offsets the market's concerns about the cyclical pullback of technology hardware, and on the other hand, provides a quantifiable basis for capital to rearrange defensively within the sector.
From a structural logic perspective, in recent years, the passive investment and ETF market has continuously expanded, bringing long-term scale dividends to large asset management institutions with channel, product, and brand advantages. BlackRock has formed a significant scale advantage in its asset management, deeply participating in this structural trend of passive products and ETF business, meaning its performance growth does not entirely rely on short-term trading conditions, but rather benefits more from capital's long-term allocation behavior in index-based and rule-based products. Against the backdrop of intense volatility in the technology hardware sector, with daily declines reaching multi-year highs, capital's preference for "scale + passive" asset management platforms became one of the clearest contrasts on that day, reflecting the market's greater willingness to assign higher defensive premiums to asset management giants with stable rate income and large managed scales within AI-related assets.
Alibaba Soars: AI Cooperation Rumors Ignite Imagination
On the same trading day when the storage chip and hardware sector faced collective pressure, Alibaba's U.S. stock followed an entirely different path. On July 15, Alibaba's stock rose approximately 7.13% to close at $120.330 per share, according to a single source, marking a new high since June 9, 2026, with strong performance contrasting sharply with the storage and PC hardware sector within technology stocks.
Driven by expectations, the market's focus concentrated on rumors regarding a potential AI collaboration between Alibaba and Apple—rumors involving the integration of Alibaba's "Thousand Questions" large model into Apple smart devices, coupled with Alibaba's positioning as an internet platform and cloud computing provider in AI applications and services. This led investors to begin reimagining the monetization potential of its AI capabilities on the market. However, the research report has clearly categorized this collaboration as a "rumor," and there is currently no official confirmation of the collaboration, nor have the related technology and commercial terms been disclosed, with the optimistic expectations reflected in the stock price being based on highly uncertain information.
Ice and Fire: Capital Withdraws and Attacks Within the AI Chain
From the trading session that day, different links in the AI industry chain presented completely opposite price signals. Companies involved in storage and hardware, such as SanDisk, Micron Technology, Western Digital, Seagate Technology, SK Hynix, and Dell Technologies, saw their stock prices collectively under pressure, with data from a single source indicating that SanDisk at one point fell over 13%, closing with a decline of about 9.29%, at a stock price of approximately $1,594.435 per share, with a total market capitalization of about $236.1 billion; SK Hynix briefly dropped about 9%, later narrowing to about 3.3%; Dell Technologies' decline expanded to about 13%, marking its largest intra-day drop since April 2025. In contrast, on the same trading day, according to a single source, BlackRock's stock rose over 8%, and Alibaba's U.S. stock increased about 7.13% to $120.330 per share, setting a new high since June 9, 2026, starkly contrasting the technology hardware end with asset management and Chinese concept platform stocks.
This contrast, combined with industry background, sketches the possible retreat and offensive directions of capital within the AI chain. In the previous round of market activity, the storage chip sector experienced a significant raise, driven by the logic of explosive demand from AI servers, with downstream computing power demand viewed as the main support for price and profitability. However, recently the market has begun to diverge on whether this demand can sustain, with the mentioned inventory backlog and pricing downside risks existing more as background concerns. In the absence of confirmed triggering factors from any source, this collective retracement at least reflects investors' re-pricing expectations for the hardware manufacturing end. In contrast, according to a single source, BlackRock's second-quarter revenue increased approximately 31% to $7.084 billion, with assets under management surpassing $15 trillion, combined with the long-term trend of passive investment and ETF expansion, which has made capital more willing to seek "instrumental" yield exposure related to AI in the asset management sector. Meanwhile, with the backing of AI cooperation rumors and its platform and cloud computing attributes, Alibaba exhibits the market's imagination regarding applications and services. Due to a lack of specific data on capital flows, these changes can only be directionally judged based on the day’s inter-sector performance, but at least it indicates that within the same AI mainline, investors are reallocating risks and expectations from the highly volatile hardware manufacturing segment to the asset management and platform segments with scale advantages and application imagination space.
From Today's Movements, Looking at the Next Risk of the AI Market
The significant divergence within the technology sector on July 15, 2026, has already placed the current risk focus of the AI mainline on the table: storage and hardware companies like SanDisk, SK Hynix, and Dell have collectively retraced significantly after the previous cycle driven by AI server demand, while BlackRock's stock surged over 8% and Alibaba rose about 7.13% to refresh a stage high, reflecting a structural shift of capital from the high-volatility hardware manufacturing end towards the asset management and internet platform end. However, it should be emphasized that the research report clearly states that the specific triggering factors for the storage chip sector's plunge and Dell's approximately 13% drop have not been confirmed by any source, and the AI collaboration between Alibaba and Apple currently only remains at the rumor level of the "Thousand Questions" large model possibly being integrated into Apple devices, with no official confirmation or disclosure of cooperation terms, under the premise of obviously incomplete information, attributing the day's market movements excessively is a risk itself. Looking forward to future AI thematic investments, three main lines truly need to be tracked: first is the cyclical evolution of storage chips and PC server hardware, where the pace of hardware profitability realization will directly impact valuation space amid divergences in downstream demand, inventory, and pricing; second is whether platforms and applications like Alibaba can turn the AI narrative into verifiable commercial monetization capabilities, rather than remaining at the expectation of cooperation and stock price elasticity; third is whether asset management institutions like BlackRock can continue to receive capital preference supported by the expansion of passive investment and ETFs, and whether this structure will inversely strengthen pricing power over AI-related assets. Under conditions of high uncertainty regarding real demand, profitability realization, and regulatory environment, the evolution of these three main lines will determine the core variables for the direction and risk exposure of subsequent AI market activities.
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