美股板块涨跌分化,AI与存储股领涨,POET暴跌逾47%,SanDisk飙升逾8%

Market Watcher04-28
On Monday, 27 April 2026, U.S. equities closed with a mixed, sector-rotational tone. AI‑related large caps and memory names outperformed, while parts of the semiconductor complex and select growth stocks saw sharp pullbacks. Trading was heavily focused on tech, with options and analyst activity driving notable single‑stock moves ahead of a dense earnings calendar.

By themes, “Trump‑linked” names outperformed, with Trump Media & Technology and Rumble both posting strong gains, reflecting continued speculative interest. Meme and WSB‑related baskets were broadly firmer, supported by strength in GameStop and BlackBerry, underscoring risk appetite in retail‑favored names.

AI‑linked megacaps were a clear focus. The U.S. AI basket, which includes NVIDIA, Microsoft, Alphabet/Alphabet and Tesla Motors, advanced as investors rotated back into core AI infrastructure and software leaders. In contrast, the “光通信” (optical communication) group, which includes POET Technologies Inc and other high‑beta hardware names, slumped, dragged down by idiosyncratic news and profit‑taking after a strong run. Memory‑centric products and ETFs such as the Roundhill Memory ETF and leveraged vehicles tied to SanDisk Corp. and Micron Technology rallied strongly, reflecting a market narrative of an emerging memory “super‑cycle.”

Chinese education ADRs and broader China‑sensitive growth themes were mixed to softer, while U.S. e‑commerce and consumer baskets showed selective weakness, in line with declines in Amazon.com and DoorDash, Inc.. Overall, sector performance highlighted a rotation within technology: AI infrastructure, memory and select cybersecurity names outperformed, while some high‑valuation chip designers and optical names corrected.

Below are the key individual stock moves driven by company‑specific news:

NVIDIA rose about 4.00%. The stock benefited from inclusion in a slate of “top stock calls” on Wall Street, where analysts reiterated bullish views on leading AI and semiconductor names including Nvidia. The reaffirmed positive recommendations and favorable risk‑reward commentary helped reinforce investor confidence in Nvidia’s AI leadership, supporting further inflows into the shares despite recent strength.

Alphabet gained 1.72%. Ahead of its Q1 2026 earnings report on 29 April, options markets showed sizeable million‑dollar call buying in the 385–410 strike range, signaling bullish positioning into the print. Implied volatility points to an expected post‑earnings move of just over 6%, and the skew toward calls suggests investors are moderately optimistic about an upside reaction, which underpinned today’s advance.

Alphabet added 1.81%. In addition to pre‑earnings call buying similar to Alphabet, the company faced internal and regulatory scrutiny over its AI strategy. More than 560 employees signed a letter urging CEO Sundar Pichai to block U.S. military use of Google’s AI, while EU antitrust guidance pushed Google to facilitate rivals’ access to its AI services. The stock’s rise indicates investors currently see these governance and regulatory pressures as manageable relative to Alphabet’s broader AI growth story.

Apple slipped 1.27%. While Apple was mentioned among Wall Street’s key tech calls, sentiment was overshadowed by competitive concerns in AI‑enabled hardware. Reports that OpenAI is working with Qualcomm and others on an AI‑centric smartphone ecosystem, with hardware‑bundled subscriptions, raised questions about future competitive dynamics in premium devices. This, combined with rotation into other AI leaders, weighed on Apple’s shares.

Microsoft inched up 0.08%. The company announced a major reset of its partnership with OpenAI: Microsoft will stop paying revenue share to OpenAI, while OpenAI will continue to share revenue with Microsoft through 2030. At the same time, Microsoft’s license to OpenAI IP becomes non‑exclusive through 2032, and OpenAI products will continue to prioritize Azure. The muted price reaction suggests investors view the revised terms as preserving Microsoft’s strategic AI positioning while modestly improving its financial economics.

Amazon.com fell 1.11%. Cathie Wood’s ARK Invest disclosed the sale of over 215,000 shares of Advanced Micro Devices and a rotation into Amazon and nuclear‑reactor developer X‑Energy, signaling a portfolio shift after a strong chip rally. However, broader retail caution ahead of “Magnificent Seven” earnings and debate around potential changes to SEC quarterly reporting rules kept pressure on high‑multiple growth names, leaving Amazon lower despite the incremental ARK buying.

Tesla Motors gained 0.60%. The company filed with the SEC to register roughly 304 million shares tied to Elon Musk’s 2018 CEO performance award, a package linked to Tesla’s long‑term valuation milestones. While the registration does not imply imminent selling by Musk, it crystallizes the scale of potential dilution. At the same time, Tesla remained a focus in Wall Street’s top stock calls and in the broader debate over long‑term versus short‑term earnings focus, helping the stock edge higher.

Micron Technology jumped 5.60%. Multiple catalysts supported the move: Melius Research initiated coverage with a Buy rating and a $700 price target, and Goldman Sachs sharply raised its 2026 DRAM and NAND price forecasts on the back of strong AI server demand and constrained supply. Together with record highs in peer memory names, these developments reinforced the thesis that the memory industry is entering a new “super‑cycle,” driving strong buying interest in Micron.

Advanced Micro Devices dropped 3.83%. The Philadelphia Semiconductor Index’s 18‑day winning streak ended, with AMD among the notable decliners as investors took profits after a 77% surge over the past month. Cathie Wood’s ARK Invest trimmed its AMD position by over $75 million, reinforcing the profit‑taking narrative. Concerns about stretched technicals and sector‑wide rotation out of some high‑beta chip names contributed to the pullback.

Intel rose 2.97%. Intel’s Q1 2026 earnings significantly beat expectations on both revenue and gross margin, sending the stock to new highs. Evercore analyst Mark Lipacis upgraded the shares to “Outperform” and lifted the price target from $45 to $111, the highest on Wall Street. Intel also featured among actively traded Wallstreetbets names, with strong pre‑market gains, underscoring renewed confidence in its turnaround and AI‑server roadmap.

ARM Holdings slid 8.06%. The stock led declines in the semiconductor complex as the Philadelphia Semiconductor Index snapped its long winning streak. Reports highlighted ARM’s drop of more than 8–10% amid concerns about overbought technicals and elevated expectations following a powerful rally. The reversal reflects a reset in sentiment toward high‑valuation chip IP names after an extended run.

Marvell Technology fell 3.71%. Marvell was cited as one of the biggest losers in the chip pullback, with declines of more than 5–7% intraday as the sector’s 18‑day rally ended. Commentary pointed to overbought technical conditions and worries about forward guidance, prompting investors to lock in profits. The stock’s weakness also intersected with headlines around its acquisition of Celestial AI, which indirectly affected sentiment in related ecosystem names.

Qualcomm gained 0.98%. The company was in focus after reports that it is partnering with OpenAI and others to develop processors for a new AI‑powered smartphone, with mass production targeted for 2028. The initiative aims to build an AI agent ecosystem with subscription services bundled into hardware, potentially challenging incumbents in the premium smartphone market. Earlier commentary noted that Qualcomm’s shares had surged more than 6–9% on the news, and they continued to hold gains as investors priced in a longer‑term AI‑mobile opportunity.

SanDisk Corp. surged 8.11%. SanDisk shares hit new all‑time highs, driven by intense investor interest in AI‑related memory plays, analyst upgrades, strong earnings and favorable supply‑demand dynamics in NAND storage. Together with Micron Technology, SanDisk was highlighted as a key beneficiary of a projected DRAM and NAND price upcycle, with heavy trading volumes underscoring the market’s conviction in a memory “super‑cycle” narrative.

CrowdStrike Holdings, Inc. rose 1.45%. The cybersecurity name was featured among Wall Street’s top stock calls, with Jefferies reiterating a positive stance on leading security and infrastructure software plays. While the note specifically highlighted another semiconductor testing company, the broader bullish tone toward high‑quality tech and security names supported incremental buying in CrowdStrike.

Nokia Oyj advanced 2.96%. Argus Research upgraded Nokia from Hold to Buy with a $15 price target, while JPMorgan significantly raised its target to $14 after a strong first‑quarter report. Nokia’s operating profit beat expectations, and management highlighted meaningful progress in its AI transformation, with optical networking and AI cloud customer sales exceeding €1 billion in orders. The combination of earnings momentum and multiple target hikes pushed the stock to its highest level since 2009.

POET Technologies Inc collapsed 47.42%. The company announced it had canceled all purchase orders from Celestial AI, following Marvell Technology’s acquisition of Celestial and allegations that POET breached confidentiality obligations. The cancellation effectively unwound a key AI‑related partnership and revenue pipeline, triggering a near‑50% plunge after the stock had recently hit multi‑year highs. Management emphasized continued focus on AI and optical networking products, but investor confidence was severely hit.

CRITICAL METALS CORPORATION soared 25.54%. The company unveiled an all‑stock deal valued at about $835 million to acquire European Lithium, which will give it full ownership of the Tanbreez rare‑earths project in Greenland by buying out European Lithium’s 7.5% stake. European Lithium shareholders will receive 0.035 Critical Metals shares per share, and the transaction will also cancel European Lithium’s 34% cross‑holding in Critical Metals, reducing future equity dilution. The market welcomed the move as strategically accretive, driving a sharp rally in CRML.

Procter & Gamble edged up 0.15%. The stock was the subject of a flurry of analyst updates: Evercore ISI maintained an “In‑Line” rating but cut its target to $162, while Wells Fargo kept an Overweight and raised its target to $164. TD Cowen reiterated a Hold with a higher $150 target, and UBS maintained a Buy while lifting its target to $172. The mixed but generally constructive revisions suggest a stable to mildly positive outlook, which kept the shares broadly flat.

DoorDash, Inc. declined 1.53%. TD Cowen initiated coverage with a Buy rating and a $225 price target, signaling confidence in DoorDash’s long‑term growth prospects. However, the stock traded lower on the day, likely reflecting broader pressure on e‑commerce and high‑growth consumer names, as well as cautious positioning ahead of upcoming earnings despite the supportive initiation.
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.

Comments

We need your insight to fill this gap
Leave a comment