Super Micro Computer $SMCI fell 9% in extended trading after proposing $7.0B of equity and equity-linked financing. The company tied the capital raise to about $39B of recent AI-server orders from more than 20 customers.
Marvell Technology $MRVL traded up 8.8% premarket after S&P Dow Jones Indices said it will enter the S&P 500 before the June 22 open. The index change adds a passive-flow catalyst to a chip stock already up 210% year to date, according to CNBC market data.
KOSPI ended June 5 down 5.54% at 8,160.59, while Samsung Electronics (005930.KS) fell 6.40% and SK Hynix (000660.KS) dropped 9.92%, according to CNBC market data. The move followed a Wall Street rotation out of AI-linked semiconductor shares.
Broadcom $AVGO fell more than 12% after Q2 FY2026 revenue of $22.187B missed estimates, according to CNBC market data. The company’s SEC-filed release showed AI semiconductor revenue of $10.8B, up 143% year over year, and Q3 revenue guidance near $29.4B.
Broadcom $AVGO fell 15% on June 4 — its worst day since January 2025 — after Q3 AI chip guidance of $16B missed the $17.2B analyst estimate by $1.2B. Q2 FY2026 revenue of $22.19B and non-GAAP EPS of $2.44 both beat consensus, and full-year AI semiconductor guidance was left unchanged at 'in excess of $100B,' disappointing a market that had priced in a raise.
Samsung Electronics (005930.KS) rose as much as 6.5% after shipping 12-layer HBM4E samples to major global customers. The company says the chip reaches up to 16Gbps and targets next-generation AI workloads.
Nvidia's board approved an $80 billion stock repurchase program on May 21 and raised the quarterly dividend 25-fold to $0.25 per share from $0.01. With $39 billion remaining under a prior authorization, Nvidia commands roughly $119 billion in total buyback capacity — one of the largest capital-return commitments in technology sector history. The announcement followed Q1 FY2027 results that beat analyst consensus on AI data-center GPU demand.
South Korea's KOSPI closed at 7,812.49 on May 21, rising 8.37% in a session steep enough to trigger a buy-side circuit breaker. Samsung Electronics' resolution of a months-long performance-bonus dispute and Nvidia's better-than-expected Q1 FY2027 results catalyzed the rally simultaneously, reversing five consecutive sessions of losses that began with a sell-circuit near the 8,000 level on May 15.
Foreign investors sold a net ₩7.34 trillion from Korean equities on May 19, extending their streak to nine consecutive sessions of net selling and pushing total outflows past ₩48 trillion since May 7. The KOSPI fell 3.25% to 7,271.66 — intraday the index shed as much as 4.98% — dragged by semiconductor sector weakness after Micron ($MU) shed 5.95% and SanDisk ($SNDK) 5.3% in New York overnight. Hyundai Motor (005380.KS) led large-cap declines with an 8.9% drop.
AI chip startup Cerebras Systems jumped nearly 70% on its May 15 market debut, closing with a market cap of roughly $95 billion — one of the largest opening-day valuations in U.S. IPO history. The blockbuster listing reignited investor interest in mega-private-company IPOs including SpaceX, OpenAI, and Anthropic, while signaling a credible rival to Nvidia's data-center dominance.
South Korea's Prime Minister Kim Min-seok issued a public ultimatum May 17, warning that May 18 talks at the Central Labor Relations Committee are 'the last chance' to avert a general strike by 50,000 Samsung Electronics workers scheduled for May 21. Samsung shares slid roughly 8% on strike risk, with the dispute centered on a stark bonus gap: 607% of annual salary for the memory unit versus 50–100% for foundry and System LSI workers.
US April import prices surged 1.9% m/m on May 15 — nearly double the +1.0% consensus estimate — while Iran-nuclear-deal impasse kept the Strait of Hormuz shut and sent oil up 3%-plus. The S&P 500 closed at 7,408.50 (-1.24%) and the Nasdaq fell 1.54%. The 10-year Treasury yield surged 116 basis points to 4.54%, its highest level in nearly a year, and markets now price a 50% probability of a Fed rate hike before year-end.