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Packaging & memory · South Korea

SK hynix

000660 KSSKHY US Work there, own it, buy from it ↓

High-bandwidth memory — holds How this is computedCount of bottlenecks on which this organisation is recorded as a producer, a holder of the capacity, or a supplier of a critical part.Method →Code → of the How this is computedCount of rows in the bottleneck corpus: every material plus every non-material chokepoint.Method →Code → bottlenecks tracked here.

Bottlenecks held1 (Computed: Count of bottlenecks on which this organisation is recorded as a producer, a holder of the capacity, or a supplier of a critical part.) of 33each with another maker recordedHardest binding10 (Estimate by Substrata, 2026-09-15: concentration 3 + substitution 2 + lead time 2 + inelasticity 3 = 10 of 12)/12High-bandwidth memory stacking yield · judged 2026-09-15Directory gradeChokepointa judgement, not a sourced factEvents0 (Computed: Accepted events that name this organisation, plus (counted separately) accepted events on a bottleneck it holds that do not name it.)name it · 1 more on what it holds

Why graded so · HBM stacking yield is knowledge that does not transfer when a competitor buys the same equipment.

Role cited from product.skhynix.com ↗. The grade is this project’s judgement. Report an error

Searching is free and needs no AI. Summaries use your own AI model.

01Chokepoints it holds

1 of 1 sourced
  • High-bandwidth memory stacking yield

    Makes it · Binding now

    Other makers: Samsung Memory KR, Micron US JP SG

    Sourced: product.skhynix.com ↗

    Estimate, not a measurementconcentration 3 + substitution 2 + lead time 2 + inelasticity 3 = 10 of 12. Three suppliers, and yield is knowledge. Every accelerator ships with it.By Substrata · 2026-09-15Supporting source →/123+2+2+3

Score = concentration + substitution + lead time + inelasticity, each 0–3, an analyst judgement dated 2026-09-15; open a score for its rationale and assessment. Makers are those the corpus records, not the whole market. No market-share figure is sourced, so none is shown.

02What has happened

1 about what it holds

About what it holds, not naming SK hynix

All events →

03Unread leads

4 found by the sweep, unread

Pages the sweep found on these chokepoints. Nobody here has read them yet; they are not events and not evidence.

04What could loosen its grip

about its chokepoints, not the company
  • Hybrid bonding

    Joining two chips copper-to-copper with no bumps between them, so they behave more like one piece of silicon.

    Science · for High-bandwidth memory stacking yield

    readiness
    Estimate, not a measurementPilot running in the real environment. In production for some image sensors and logic stacks; ramping for memory stacks.By Substrata · 2026-09-15Supporting source →/9

Readiness is the 1–9 technology-readiness scale, a dated judgement; open a figure for the reasoning and its source.

05SEC filings

8 most recent, from SEC EDGAR

The company’s own filings, from SEC EDGAR, fetched hourly. Substrata has not judged their effect on any bottleneck.

06Others at the same step of the chain

directory rows · grades are judgements

07Ways to take part

how to reach it, not whether to

Not investment advice. This says how the public can reach a company — a job, its shares, its products — not whether anyone should. It takes no account of anyone’s circumstances, and a company holding a chokepoint is not a reason to own it. What this is not

Work there
It publishes its roles on its own careers page.Official careers page ↗
Own part of it
Its shares trade publicly as 000660 KS and SKHY US, bought and sold through a broker that reaches that exchange.000660 KS listing record ↗SKHY US listing record ↗Its SEC filings
Buy from it
What it does in the chain: High-bandwidth memory. At this depth of the chain most sales are to other businesses, under contract. Its own page describes what it offers.Its own page ↗

08Hiring

official careers page

Its roles are published on its own site, which Substrata links rather than reads. Official careers page ↗

09What this holds up

2 loops

A loop is one design, build and measure turn. Severity is a dated judgement on a 0–12 scale, not a measurement, and the judgements are not added together — the figure shown is the worst single one.

10Sources

1 cited
  1. product.skhynix.com ↗ — its role in the chain: High-bandwidth memory; High-bandwidth memory stacking yield: makes it

Discussion

Comments use threadkit (permission is participation). Sign in with OrangeCat to write. Fact-check is the same assistant as Ask, grounded in the corpus.

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