ARM Holdings and AMD tumble as Samsung strike fears and oil surge rattle chip sector, SOXX -4.1%

ARM Holdings plc (NASDAQ: ARM) fell 8.5% Friday as a convergence of macro headwinds hit the semiconductor sector: a looming 18-day Samsung union strike threatening high-bandwidth memory supply beginning May 21, oil prices spiking to $109 per barrel after a U.S.-Iran deal, and no meaningful policy breakthrough at the Trump-Xi summit in Beijing. The Philadelphia Semiconductor Index dropped 4.1% to 508.52, while the S&P 500 shed 1.2% to 7,408 and the Nasdaq Composite fell 1.5% to 26,225, pulling back sharply from the week's earlier record highs.

Today's biggest movers

ARM Holdings slides 8.5% on earnings hangover and supply fears

ARM Holdings slid to $209.16 in heavy trading, extending a correction that began after its May 6 earnings report. The company delivered record fiscal Q4 revenue of $1.49 billion against a $1.47 billion consensus, with EPS of $0.60 beating the $0.54 estimate. But management's admission that it could not secure sufficient manufacturing capacity to meet surging demand for its proprietary AGI central processing unit - alongside a warning that smartphone unit growth would turn negative amid a memory chip shortage - drove an initial 7.3% decline on May 7.

Friday's move deepened that slide even as analysts upgraded price targets. TD Cowen raised its target to $265 from $165, RBC Capital moved to $260 from $175, Jefferies lifted to $290 from $210, and Bank of America's Mehdi Hosseini set a $300 target with a Buy rating, citing data center and AI-driven demand. The wide spread between Morgan Stanley's $202 and Bank of America's $300 reflects genuine disagreement about whether ARM's supply constraint is a near-term execution problem or a structural ceiling on royalty growth.

Intel, AMD, and Super Micro fall as Samsung strike looms over HBM supply

The chip sector's broader decline traced to news that Samsung Electronics' National Samsung Electronics Union will begin an 18-day work stoppage on May 21 after management and the union failed to reach agreement on bonus structures tied to the AI semiconductor boom. More than 50,000 workers are expected to participate, and JPMorgan estimates the stoppage would cost Samsung's semiconductor division over 4 trillion won in direct revenue. High-bandwidth memory supply - the feedstock for AI accelerators from NVIDIA Corporation (NASDAQ: NVDA) and Advanced Micro Devices to Alphabet's Google - sits at the center of the supply risk, with Samsung a primary HBM vendor to those hyperscalers.

Intel Corporation (NASDAQ: INTC) fell 6.2% to $108.77, compounding concerns about competition from AMD and ARM-based server chips. The stock's 176% year-to-date gain is the most stretched valuation in the AI chip cohort, leaving it exposed when macro sentiment sours. Mizuho raised its Intel price target to $124 from $100 on May 12, and Deutsche Bank moved to $100 from $63 the same day, but the Wall Street consensus remains Hold with an average 12-month target of $68.03 - well below the current price. The dynamic echoes last Tuesday's CPI-driven 6.8% drop, when Intel was also the largest percentage loser in the cohort.

Advanced Micro Devices Inc. (NASDAQ: AMD) slid 5.7% to $424.10, retreating from its all-time closing high of $456.29 set May 8. With 40 sell-side analysts maintaining Buy ratings and an average 12-month target of $457.83, the pullback reads as technical rather than fundamental - but Samsung's HBM exposure adds a supply-chain risk layer to the MI300 accelerator business. AMD reports next on August 4.

Super Micro Computer Inc. (NASDAQ: SMCI) fell 6% to $31.04, weighed by a Goldman Sachs Sell reiteration flagging dangerous customer concentration: one data center client accounted for 27% of quarterly revenue and nearly 39% of year-to-date sales. Super Micro now trades 48.6% below its 52-week high of $60.71 reached in July 2025.

ServiceNow gains 5% as software splits from chip weakness

ServiceNow Inc. (NYSE: NOW) rose 5.1% to $95.07, the sharpest gain in the AI software cohort and a notable divergence from the hardware selloff. The company reported Q1 2026 subscription revenue of $3.77 billion, up 22% year-over-year, alongside full-year guidance of $15.74-$15.78 billion in subscription revenues. Bernstein maintained a Buy rating and set a $236 price target, citing ServiceNow's expansion of AI-native agentic workflows across enterprise customers. The consensus among 31 analysts is Strong Buy, with an average 12-month price target of $184.13. The rotation inverts Thursday's pattern, when semiconductor names led the market higher on H200 export clearances.

Salesforce Inc. (NYSE: CRM) added 3.5% to $173.51, Microsoft Corporation (NASDAQ: MSFT) rose 3.1% to $421.92, and Snowflake Inc. (NYSE: SNOW) gained 4.5% to $157.47. All three carry significant year-to-date losses - Salesforce down 31.6%, Snowflake 27.3%, Microsoft 10.8% - making them tactical long candidates when hardware names face macro pressure. MongoDB Inc. (NASDAQ: MDB) added 3% to $312.16, extending a strong recovery off its 2026 lows.

Notable but quieter

Lam Research Corporation (NASDAQ: LRCX) fell 4.8% to $284.72; as a supplier of deposition and etch equipment used inside Samsung's fabs, it carries direct exposure to any production halt. Goldman Sachs has a Buy on LRCX with a $290 target. ASML Holding N.V. (NASDAQ: ASML) slid 5.2% to $1,501.81 in sympathy, despite holding a near-monopoly on the extreme ultraviolet lithography machines required for advanced node production. Baidu Inc. (NASDAQ: BIDU) declined 5.6% to $135.33 on profit-taking; the company unveiled ERNIE 5.1 at its annual Create 2026 conference, with CEO Robin Li proposing Daily Active Agents as the defining metric for the AI industry's agent era. CrowdStrike Holdings Inc. (NASDAQ: CRWD) bucked the selloff with a 2.4% gain to $594.08, and Palo Alto Networks Inc. (NASDAQ: PANW) added 1.9% to $242.83, both reflecting continued enterprise security spending that is less correlated with semiconductor supply chains.

What to watch next week

The Samsung strike deadline falls May 21; final government-mediated talks are ongoing, and any deal would likely trigger a sharp recovery in chip-equipment names. Federal Reserve officials are scheduled to speak Monday, with markets parsing each comment for rate-cut signals after bond yields rose Friday on renewed inflation concerns tied to oil's surge. NVIDIA Corporation, which slid 4.4% to $225.32 Friday on $39.6 billion in dollar volume, reports earnings in the coming week - guidance on Blackwell processor allocation and HBM sourcing arrangements will set the tone for the entire AI hardware trade in the sessions ahead. MongoDB reports on June 4.

Not investment advice.