Idea of the Week: AI-memory boom fortifies SK Hynix’s 4.66% short-term USD bonds

Source: Company data, iFAST Compilations.
As of 30 June 2026. 

Three-supplier oligopoly supports near-term earnings

In our view, SK Hynix's strongest credit support over the next 12–24 months is the favourable HBM industry structure. Together with Samsung and Micron, the company operates in a three-supplier oligopoly supplying HBM, a critical component underpinning AI accelerators. Given the complexity of HBM manufacturing and lengthy customer qualification cycles, supply remains structurally constrained despite robust demand, supporting pricing and profitability.

Qualification remains the key competitive hurdle. Products that fail customer validation generate no revenue regardless of technical specifications or installed capacity. While this customer concentration increases downside risk should AI spending weaken, we believe it has also reinforced SK Hynix's pricing power, contributing to its industry-leading 81% EBITDA margin.

As shown in Chart 2 below, the competitive landscape begins to normalise in 2026. Samsung's prolonged HBM3E qualification delays effectively allowed SK Hynix to dominate NVIDIA's Blackwell product cycle. That advantage is unlikely to be repeated, with Samsung reportedly securing HBM4 qualification and expected to participate in NVIDIA's Vera Rubin platform.

Nevertheless, we believe the impact on SK Hynix should be manageable. While HBM market share has moderated from around 62% to the 56.4%, the overall HBM market continues to expand rapidly. We therefore believe modest share losses are unlikely to materially affect earnings, provided industry supply remains constrained.

Chart 2: Estimated market share of HBM between the 3

Source: Company data, iFAST Compilations.
As of 30 June 2026. 

High barriers delay meaningful competitive threats

In our view, competitive risks from Chinese memory manufacturers remain concentrated in commodity DRAM rather than HBM. While CXMT continues to narrow the technology gap in conventional DRAM and expand production capacity, HBM requires advanced-node manufacturing, sophisticated packaging capabilities and multi-year customer qualification cycles that remain difficult to replicate.

Export restrictions further raise barriers to entry by limiting Chinese access to advanced EUV lithography. Although CXMT is reportedly targeting HBM3 production in 2026, it remains around two generations behind HBM4, which is now entering volume production. We therefore expect the three incumbent suppliers to retain dominant market positions through at least 2028.

Supply growth also remains constrained by long fabrication lead times. As illustrated in Chart 3 below, new capacity requires years to construct, while HBM production consumes significantly more DRAM wafers than conventional memory, limiting the pace of effective supply expansion.

Accordingly, we do not expect meaningful supply relief before the second half of 2027, with the bulk of new capacity arriving during 2028–29. We therefore expect favourable supply-demand dynamics to continue supporting earnings and cash generation over the near term. However, this also underpins our more cautious view on the 2033 bonds, where investors become increasingly exposed to the period when new industry capacity is expected to come onstream.

Chart 3: Earliest meaningful capacity additions

Source: Company announcements, iFAST Compilations.
As of August 2026. 

Contracted demand provides a floor for shipment volumes and pricing

We think the most important structural change for bondholders this cycle is not the strength of memory pricing, but that an increasing share of HBM demand is now secured under long-term supply agreements. Historically, memory has been largely spot-priced, leaving earnings highly exposed to swings in supply and demand. SK Hynix is beginning to shift away from this model through multi-year agreements with around ten key customers, reportedly including NVIDIA, while all industry HBM output for 2026 has already been sold.

We view this positively from a credit perspective. During the 2Q26 earnings call, management reiterated its intention to expand long-term customer agreements to reduce earnings volatility. While this may cap upside during periods of exceptionally strong pricing, we think the trade-off is favourable, as greater revenue visibility should improve cash flow resilience through the next downcycle.

The impact is already becoming visible. Although 2Q26’s blended average selling price (ASP) rose by around 30%, management attributed part of the shortfall versus expectations to long-term contracts and the deferral of higher-value shipments into the second half. This demonstrates that the agreements are already limiting upside at the peak of the cycle. More importantly, we expect the same mechanism to moderate future declines in pricing and shipment volumes when market conditions soften.

That said, we do not believe the protection should be overstated. Commercial terms remain undisclosed, customer demand is concentrated among NVIDIA and a small number of hyperscalers, and these agreements have yet to be tested through a full memory downturn. As such, we expect long-term contracts to moderate—rather than eliminate—the next downcycle.

Net cash and ample coverage meet increased capex and shareholder returns

SK Hynix’s credit profile has strengthened markedly over the past three years, underpinned by favourable memory industry fundamentals and exceptional cash generation. As seen in Table 1 below, leverage (net debt/equity) has trended down meaningfully, from 44% in FY23 to a net cash position since FY25. Net debt/EBITDA has followed a similar trajectory.

Liquidity is especially robust. As of 30 June 2026, SK Hynix held KRW 88.0t of liquidity against KRW 18.6t of interest-bearing debt. As shown in Chart 4, OCF and FCF have increased significantly over the past two years, with cash generation accelerating further since the start of 2026, leaving ample coverage for SK Hynix to meet its debt-servicing obligations.

Looking ahead, we believe the key areas to monitor are capex and shareholder returns.

For capex, management expects FY2026 capex to reach high KRW 40t, which is comfortably covered by existing liquidity and recent FCF generation. Over the longer term, SK Hynix plans to invest up to KRW 1,100t over the next decade to expand production capacity. While management has reiterated that spending will remain phased alongside market demand and cash flow generation, we expect capex to trend materially higher over the coming years as new fabrication and packaging capacity come online.

In our view, the key credit risk is not the scale of investment itself, but the timing. Memory manufacturers have historically expanded capacity during periods of peak profitability, only to face weaker utilisation, lower pricing and higher depreciation when the cycle turns. We think this risk becomes increasingly relevant from 2028 onwards as industry supply gradually normalises.

That said, we view SK Hynix’s funding strategy positively. The recent Nasdaq ADR listing in July, which raised approximately KRW 40t, provides substantial equity funding for the current investment cycle and should meaningfully reduce reliance on debt financing. Together with robust operating cash flow generation, we believe SK Hynix is well positioned to fund its near-term expansion while preserving balance sheet strength.

With funding for its capacity expansion largely addressed, we believe SK Hynix’s forthcoming shareholder return framework will be the next key consideration for bondholders. In our view, the framework should provide a clearer indication of management’s financial discipline and willingness to balance shareholder returns against maintaining a pristine balance sheet.

Chart 4: Cash flows have accelerated over the last year 

Source: Company data, iFAST Compilations.
As of 30 June 2026. 

Table 1: Credit metrics have strengthened immensely; watch for capex and shareholder return plan

Overall, we believe SK Hynix’s credit profile has improved significantly over the past three years, supported by robust AI-driven demand for its memory chips and exceptional cash flow generation. SK Hynix is rated BBB+ by S&P, A3 by Moody’s, and BBB+ by Fitch; do note that all three rating agencies upgraded SK Hynix’s credit profile over the course of 2026. The company now maintains a sizeable net cash position, with ample liquidity and FCF to comfortably fund debt-servicing obligations, elevated capex and potentially increased shareholder returns. We expect industry fundamentals to remain supportive through at least the end of 2027. Beyond that, we see the key risks as rising industry supply, a potential slowdown in AI investment and management’s capital allocation decisions. Nevertheless, we believe SK Hynix enters the next stage of the memory cycle from a position of considerable financial strength.

In Table 2 above, we highlight the outstanding SK Hynix’s USD bonds available on our platform. Of these issues, we favour the HYUELE 6.375% 17Jan2028 Corp (USD) issue, which offers a yield to worst of 4.66% and a tenor of 1.45 years. At over 50bps above comparable US Treasuries, we believe the bond provides an attractive yield pickup for a high-quality credit. Importantly, its shorter maturity also limits investors’ exposure to the period when additional industry capacity is expected to come online from 2028 onwards, making it our preferred way to gain exposure to SK Hynix’s improving investment-grade profile. We note that these yields are generally in-line with comparable US BBB+ issuers.

Declaration: For specific disclosure, at the time of publication of this report, IFPL (via its connected and associated entities) holds HYUELE 6.500% 17Jan2033 Corp (USD) and the analyst who produced this report holds NIL positions in the abovementioned securities. This research report was prepared with the assistance of artificial intelligence (AI) tools. iFAST Financial Pte Ltd does not rely exclusively on AI for content generation; the content of this report – including all investment theses, ratings, price targets and conclusions – has been independently reviewed and verified by the research analyst(s) to ensure accuracy and professional integrity.