Why LS Securities Cut SK Hynix’s Target Price 27%—It’s About HBM Margins, Not Demand Collapse

30-Second Brief

Bottom Line

LS Securities’ sharp target-price cut reflects lower expectations for 2027 HBM profitability, not a call that current HBM demand is collapsing. Published excerpts attribute the revision to less exceptional margins and greater supplier competition. That is a meaningful earnings risk—but a different one from disappearing orders. E-Today’s coverage of LS Securities

Claim / Verdict

CLAIM: The target-price cut is a reset of future HBM profitability assumptions, not confirmation of a current demand collapse.

VERDICT: SUPPORTED. This assessment concerns the reported rationale for the cut—not whether LS’s 2027 forecasts will prove correct.

3 Key Facts

1. Target price: KRW 3.3 million → KRW 2.4 million per Korean-listed share, a 27.3% reduction calculated by KMI.

2. 2027 HBM operating-margin assumption: approximately 80% → 60%, not an observed decline in current margins.

3. Buy rating maintained: LS retained a positive view of HBM shipment growth and longer-term demand. Maeil Business coverage

Why It Matters

A growing market can support lower supplier margins. Investors need to assess how much profit SK Hynix can retain as competition expands—not just how much HBM customers need.

Watch Next

• Samsung’s customer-specific HBM4 supply expansion and production yields.

• SK Hynix’s HBM pricing, product mix and profitability disclosures.

• Industry capacity growth versus customer orders for 2027.

Evidence limit: KMI reviewed published report excerpts, not LS Securities’ complete original report or underlying model.

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What Changed—and What Did Not

LS Securities, a Korean brokerage, reduced its valuation estimate while keeping its investment rating unchanged.

Item	Previous	Revised	What it represents
SK Hynix target price	KRW 3,300,000	KRW 2,400,000	One brokerage’s valuation estimate
2027 HBM operating margin	Approximately 80%	Approximately 60%	An analyst forecast
Investment rating	Buy	Buy	LS’s recommendation, not KMI’s

Reported by E-Today. Target-price change calculated by KMI: (2.4 ÷ 3.3 − 1) × 100 = −27.3%.

The 27.3% is the reduction in the target price. It is not SK Hynix’s daily share-price return, a measured fall in demand or a disclosed reduction of the same size in company earnings.

A retained Buy rating does not erase the downgrade. Nor does it guarantee that the shares will reach the new target.

Why HBM Demand and HBM Margins Can Diverge

High-bandwidth memory, or HBM, is stacked DRAM used alongside high-performance processors, including AI accelerators. Demand describes how much customers want to purchase. Operating margin measures how much operating profit a supplier earns from each unit of revenue.

Those are related, but separate, questions.

Customers can continue buying more HBM while gaining more qualified suppliers to choose from. Greater purchasing flexibility can limit an incumbent supplier’s pricing power, even when total industry shipments are rising.

This is the competitive concern attributed to LS: Samsung’s expanding HBM4 supply could make customer sourcing less concentrated and reduce SK Hynix’s supplier premium. The brokerage’s reported thesis is not that the market has stopped growing. Maeil Business

For investors, the distinction is consequential: strong demand does not guarantee that every supplier retains the same share of industry profits.

The 80% → 60% Revision Is Still Economically Significant

The margin change is approximately 20 percentage points. Both figures refer to LS’s assumptions for 2027; neither should be presented as SK Hynix’s confirmed current HBM margin or official company guidance.

As a simple sensitivity calculation, holding revenue unchanged, moving from an 80% to a 60% operating margin produces 25% less operating profit. This is KMI’s arithmetic illustration—not LS’s disclosed company-wide earnings revision or an explanation of every component of the target-price cut.

The point is that revenue need not fall for expected profits to be revised substantially lower.

Lower expected profitability can also reduce future cash generation and investors’ willingness to pay a premium for earnings. Without the full valuation model, however, KMI cannot isolate how much of the target cut came from earnings assumptions, valuation multiples or other adjustments.

“Not a demand-collapse call” does not mean “not negative.” The revision challenges the durability of unusually high profitability.

Samsung HBM4: Watch the Scale-Up, Not a Hypothetical First Launch

There is an important timing distinction. Samsung announced on February 12, 2026, that it had begun HBM4 mass production and shipped commercial products to customers. Its initial commercial entry is therefore not merely a future possibility. Samsung’s official announcement

The unresolved questions are commercial scale, customer-specific approvals and allocations, manufacturing economics, and the effect on competitors’ pricing.

A product launch does not disclose every customer’s order volume. Similarly, announced capacity is not the same as qualified, saleable output: yield—the proportion of production that meets specifications—matters for both supply and cost.

This is why further supply from Samsung or Micron should be assessed alongside SK Hynix’s technical execution, customer relationships and cost improvements. Competition can pressure margins; it does not automatically eliminate a supplier’s competitive advantages.

What Would Test the Margin-Reset Thesis?

Three evidence streams matter most:

1. Pricing and costs: HBM average selling prices, product-generation mix, packaging costs and yield improvements. A falling blended price can reflect mix changes, so comparable products and contract terms matter.

2. Customer supply allocations: confirmed shipments and sourcing decisions, rather than unverified claims that a supplier has won or lost an entire customer.

3. Demand versus usable capacity: customer orders and deployments compared with qualified output across the industry. Construction announcements alone cannot establish a future surplus.

These variables can produce different outcomes. Strong orders with more competitive pricing would fit a margin-normalization scenario. Sustained pricing and better yields could make the revised assumption too conservative. Broad order cancellations or shipment cuts would raise a separate demand question.

None of those outcomes is established by the target-price revision itself.

For equipment and materials companies, the distinction is equally important: memory-producer margins and equipment orders need not move together. Their outlook requires evidence on actual capital spending, purchase orders and customer exposure.

Sources, Limits and KMI’s Conclusion

The principal evidence is E-Today’s August 31 report quoting LS Securities, cross-checked against Maeil Business’s coverage. Both refer to the same brokerage analysis; they are not independent confirmations of future industry conditions.

KMI has not obtained the complete LS report or reproduced its customer-level pricing, volume, yield and valuation assumptions. The SUPPORTED verdict is therefore limited to the stated reason for the revision. It does not validate a 60% future margin or establish that demand faces no risks.

The conclusion would need reconsideration if the original report identified a sharp demand contraction as a central reason for the cut. Any later deterioration in orders would require a new assessment—not a retroactive rewriting of today’s evidence.

The target came down because expected profitability came down. That is not the same as evidence that HBM demand has collapsed.

The demand story is not the same as the margin story.

Related KMI Research

• What Is HBM? The Investor Guide to AI Memory — the technology, qualification and production constraints behind the investment debate.

• Samsung’s zHBM Concepts and 400-Plus-Layer BV-NAND — why technology roadmaps, commercial shipments and proven economics require different evidence.

Korea Market Insight | Evidence Before Narrative. For informational purposes only; not investment advice.