SK Hynix Caught Between a Ratings Lift and Samsung's HBM4 Surge
Published on 09/01/2026 at 13:33 | Editorial boerse-global.de
The memory-chip giant is simultaneously celebrating a credit upgrade and absorbing a competitive blow, as the artificial-intelligence boom reshuffles the pecking order in the industry's most lucrative segment.
S&P Global Ratings lifted SK Hynix's long-term issuer rating from "BBB+" to "A-" with a positive outlook, citing the company's AI-driven operational strength. The upgrade landed in the same week that LS Securities slashed its price target on the stock by 27.3 percent to 2.4 million won, while bumping Samsung Electronics' target up 12.5 percent to 450,000 won — a stark illustration of how quickly momentum can shift in the high-bandwidth memory (HBM) race.
Samsung's HBM4 Share Gains Traction
The crux of the concern sits with HBM4, the newest generation of memory chips that power advanced AI accelerators. According to LS Securities, Samsung's share of HBM4 shipments jumped from roughly 5 percent in the first quarter to about 35 percent in the second, with its mixed yield improving by more than five percentage points.
For SK Hynix — which still leads the overall HBM market with a 58 percent revenue share in Q1 — that represents the first meaningful setback in the segment's most profitable corner. The brokerage simultaneously trimmed its operating margin forecast for SK Hynix's HBM business from around 80 percent to approximately 60 percent.
The competitive pressure arrives even as the pricing environment remains exceptionally favorable. HBM export prices hit a record $76.13 per unit in July, up 9.5 percent month-over-month and the first time the metric has crossed the $70 threshold. That follows an average of $60.22 in the second quarter, up sharply from $40.94 in Q1. DRAM prices also climbed 24.3 percent in July to $22.90.
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A Tale of Two Ratings
The S&P upgrade, announced against this backdrop, reflects confidence in the company's ability to sustain its AI-fueled earnings momentum. The agency's positive outlook suggests further upside could follow.
That optimism is grounded in a blockbuster second quarter: SK Hynix reported revenue of 79.32 trillion won, a 257 percent year-over-year surge, with an operating margin of 76 percent. The results were powered by robust demand for HBM and enterprise solid-state drives.
The strong numbers have drawn fresh analyst attention. Wolfe Research and RBC Capital Markets initiated coverage on Monday with optimistic stances, setting price targets between $200 and $240 per ADR, citing HBM4 pricing tailwinds. Over the weekend, Stifel launched coverage with a "Buy" rating and a $240 target, while William Blair started with "Outperform," projecting free cash flow will more than double by 2028.
Capital Flows Tell a Different Story
Despite the bullish fundamentals, recent trading patterns reveal underlying nervousness. Foreign investors have sold roughly 5.98 trillion won worth of SK Hynix shares over the past four weeks, during which the stock at one point shed around 9 percent in a single month.
Among the most active traders at Mirae Asset, a clear rotation has emerged: positions in SK Hynix have been trimmed while Samsung Electronics has been accumulated, driven by the latter's expanding DRAM capacity and rising HBM prices.
At the current price of 1,693,000 won, the stock is up 1.1 percent on the day and 0.9 percent on the week, with a 30-day gain of 8.1 percent. Year-to-date, the shares have advanced 161 percent — a remarkable run from the 52-week low of 319,000 won set last September, though still roughly 43 percent below the June peak of nearly 2.99 million won.
The secondary article's Monday close of 1,674,000 won, with a daily gain of 1.3 percent, reflects the same consolidation phase. The stock has slipped below its 50-day moving average, suggesting the market is digesting an ambitious valuation after the recent surge.
Strategic Moves on Multiple Fronts
SK Hynix is responding to the competitive landscape with a series of strategic initiatives. Chairman Chey Tae-won is exploring either a joint manufacturing alliance or a smaller acquisition in Japan to expand production capacity, the company confirmed Monday. Such a move would diversify its geographic footprint beyond existing investments in South Korea and the United States.
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CEO Kwak Noh-Jung said Sunday that the global memory shortage will persist through the end of the decade, driven by structurally elevated demand for custom DRAM and HBM. A Japanese expansion would allow SK Hynix to add capacity without delaying major projects elsewhere — including the $4 billion HBM packaging facility in Indiana, which broke ground just days ago and is slated for mass production in the second half of 2029.
The company is also reportedly evaluating Intel Foundry as a second source for HBM base dies, a move that would reduce its dependence on TSMC. Meanwhile, Samsung showcased its "CUBE" strategy at SEMICON Taiwan, targeting higher bandwidth and lower power consumption for future HBM generations — a signal that the battle for technological leadership in AI memory is entering a new phase.
UBS analysts expect SK Hynix to still deliver 48 percent of global HBM bits this year despite Samsung's advance, underscoring that the incumbent retains a substantial lead even as its challenger gains ground.
For investors, the picture remains genuinely two-sided: rising memory prices bolster the entire sector's earnings outlook, but a resurgent Samsung is applying increasing pressure on both market share and valuation. The rating upgrade validates SK Hynix's execution so far; the price target cut serves as a reminder that in this industry, leadership is never permanent.
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