South Korean chipmakers lead an AI-fueled rally as Microsoft and Amazon earnings revive sector optimism
Shares of South Korean semiconductor heavyweights SK Hynix and Samsung Electronics climbed sharply, according to a Firstpost headline published on the morning of August 1, 2026. The Firstpost report cited strong AI-chip optimism tied to recent earnings from Microsoft and Amazon, framing the move as a renewed rally rather than a fresh fundamental shift. The full article body was not accessible at the time of writing, so the figures and framing below rely solely on the headline-level information surfaced by Firstpost and broader context already established in prior reporting.
What Firstpost reported
Per the Firstpost headline, SK Hynix shares rose 25% and Samsung Electronics shares rose over 20%. The reported catalysts were AI-chip optimism and the latest earnings results from Microsoft and Amazon, two of the largest cloud and AI infrastructure buyers in the world. The headline frames the move as a rally, suggesting that the surge was at least partly sentiment-driven rather than grounded in new company-specific disclosures from SK Hynix or Samsung themselves.
Because the full Firstpost article was unavailable, the specific intraday timestamps, closing prices, percentage-of-volume figures, and analyst quotes behind the headline could not be verified. Readers should treat the 25% and 20% moves as Firstpost-attributed figures rather than independently confirmed closing prices.
Why Microsoft and Amazon earnings matter for Korean memory chips
Even without access to the underlying article, the linkage between U.S. hyperscaler earnings and South Korean memory suppliers is well established. Both Microsoft, through its Azure cloud and OpenAI partnership, and Amazon, through AWS, are significant buyers of high-bandwidth memory, or HBM, that is used to pair with advanced AI accelerators. SK Hynix has been the dominant supplier of HBM3E and HBM4 generations, and Samsung has been working to close the gap with its own HBM programs.
Strong earnings from these U.S. buyers, particularly guidance around capital expenditure on AI infrastructure, have historically served as a leading indicator for memory demand. When hyperscalers signal continued or growing AI investment, the order pipeline for Korean memory makers is expected to extend. The Firstpost headline appears to lean into this dynamic, tying the South Korean rally to the earnings signal rather than to any sector-wide policy change.
Context from prior reporting on the chip cycle
The rally description in Firstpost’s headline sits against a backdrop of mixed signals in the broader chip sector. Earlier, CoinCustard reported that global chip stocks sold off as competition from China and AI-financing concerns spread to U.S. and Asian markets. More recently, reporting highlighted record SK Hynix quarterly profit driven by AI memory demand, the start of HBM4 shipments, and a deepening tie-up with Nvidia valued at roughly $500 billion.
If accurate, the Firstpost figures suggest a sharp intraday or session-level reversal of that earlier cautious sentiment. A 25% one-day move in SK Hynix would be unusually large for a company of that market capitalization and would imply a substantial reassessment of near-term HBM pricing power, allocation, or supply expectations.
Why Samsung’s move is harder to read
While SK Hynix’s position in HBM is comparatively narrow and easy to map to AI demand, Samsung Electronics is a sprawling conglomerate whose exposure to AI-related chip demand is diluted across its memory business, its foundry operations, its consumer electronics, and its display operations. A move of more than 20% in Samsung shares, as described in the Firstpost headline, would therefore either reflect a particularly broad market re-rating of Korean equities, a sharp move in the memory segment specifically, or headline-driven momentum trading.
Without the body of the Firstpost article, it is not possible to determine whether Samsung’s move was driven by the same AI-chip narrative as SK Hynix’s, or whether it reflected spillover buying. This is a key caveat for any reader weighing the headline at face value.
What to watch next
- Whether the U.S. earnings signal is durable. Microsoft and Amazon’s commentary on AI capex, and not just revenue, will determine whether the optimism priced into Korean memory names persists.
- Samsung’s HBM positioning. Updates on Samsung’s HBM3E and HBM4 qualification status with major accelerator suppliers will help clarify whether the move reflects a fundamental re-rating.
- Sector-wide trading liquidity. A 25% gain in SK Hynix and a 20% gain in Samsung raise questions about follow-through. Volume and price action in subsequent sessions will indicate whether holdings are shifting or whether the move was concentrated in a single trading window.
- Broader Asian chip peers. Whether TSMC, Tokyo Electron, and other AI-exposed Asian names tracked the Korean rally will help distinguish a regional AI-chip rotation from a Korea-specific event.
Cautious framing for readers
The figures cited above are taken from a Firstpost headline rather than from a verified article body. CoinCustard has not independently checked the specific percentage moves, the closing prices, or the precise trading window referenced. Investors and readers should treat the headline as a leading indicator of market sentiment and wait for confirmed exchange data, company filings, or additional reporting before treating the figures as settled.
Where this article uses analysis, it is clearly labeled as analysis and is based on prior reporting already published on CoinCustard and on widely understood industry dynamics. No new numbers, quotes, or sources have been introduced beyond the Firstpost headline itself.
If the Firstpost article body becomes accessible, CoinCustard will update this story with verified closing prices, intraday context, and any direct analyst or executive commentary that the original report contains.