Samsung will grow global HBM market share from 20% to 28% by securing majority of orders for Vera Rubin-exclusive HBM4.

Samsung will grow global HBM market share from 20% to 28% by securing majority of orders for Vera Rubin-exclusive HBM4. | Samsung HBM4 qualification + Vera Rubin attribution

Key catalyst: Samsung HBM4 qualification + Vera Rubin attribution

Watch events: Samsung HBM quarterly revenue; Vera Rubin ramp attribution.

Samsung HBM4 qualification progressing 2025-2026 but behind SKH; NVIDIA Vera Rubin order book includes Samsung meaningful allocation.

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Beneficiaries (24)

{
  "nia": false,
  "qty": "20%→28% HBM share",
  "mode": "FORECAST",
  "role": "Cited-Firm",
  "caveats": "Qualification slips or yield issues would derail share-gain narrative.",
  "context": "Catch-up thesis for Samsung HBM — predicated on aggressive HBM4 qualification success.",
  "to_year": 2026,
  "cited_by": "Synthesis report",
  "conv_cues": "specific share gain; MS research",
  "direction": "NUMERIC_TARGET",
  "from_year": 2026,
  "timeframe": "2026",
  "conv_level": "HIGH",
  "milestones": [
    {
      "kind": "llm_pre_event",
      "label": "Samsung passes Nvidia HBM4 qualification and signs Vera Rubin supply contract",
      "source": "https://fintool.com/news/samsung-hbm4-nvidia-vera-rubin — Samsung begins world's first HBM4 mass production for Vera Rubin",
      "status": "overdue",
      "weight": 0.4,
      "ordinal": -6,
      "source_id": null,
      "confidence": 0.95,
      "expected_date": "2026-02-15",
      "miss_emitted_at": "2026-05-02T22:07:21.384228+00:00",
      "miss_emitted_by": "metadata_milestone_sweep",
      "research_origin": "deep_research",
      "measurement_criterion": "Samsung publicly confirms (via earnings call, press release, or sourced media report) it has passed Nvidia qualification and secured purchase orders for HBM4 destined for Vera Rubin"
    },
    {
      "kind": "quartile_checkpoint",
      "label": "Q1 window check-in (25%)",
      "status": "overdue",
      "weight": 0.05,
      "ordinal": -5,
      "source_id": null,
      "expected_date": "2026-02-20",
      "observed_date": null,
      "miss_emitted_at": "2026-05-02T22:07:21.384228+00:00",
      "miss_emitted_by": "metadata_milestone_sweep"
    },
    {
      "kind": "llm_pre_event",
      "label": "Samsung HBM4 mass production begins shipments",
      "source": "https://www.trendforce.com/news/2026/02/09/news-samsung-hbm4-reportedly-to-ship-first-after-lunar-new-year-initial-share-projected-at-mid-20/ — Samsung HBM4 to ship first after Lunar New Year, initial share mid-20%",
      "status": "overdue",
      "weight": 0.4,
      "ordinal": -4,
      "source_id": null,
      "confidence": 0.92,
      "expected_date": "2026-03-02",
      "miss_emitted_at": "2026-05-02T22:07:21.384228+00:00",
      "miss_emitted_by": "metadata_milestone_sweep",
      "research_origin": "deep_research",
      "expected_date_range": {
        "to": "2026-03-31",
        "from": "2026-02-01"
      },
      "measurement_criterion": "Samsung confirms first HBM4 shipments have begun (TrendForce, KED Global, or Samsung official disclosure)"
    },
    {
      "kind": "quartile_checkpoint",
      "label": "Q2 window check-in (50%)",
      "status": "overdue",
      "weight": 0.05,
      "ordinal": -3,
      "source_id": null,
      "expected_date": "2026-04-11",
      "observed_date": null,
      "miss_emitted_at": "2026-05-02T22:07:21.384228+00:00",
      "miss_emitted_by": "metadata_milestone_sweep"
    },
    {
      "kind": "quartile_checkpoint",
      "label": "Q3 window check-in (75%)",
      "status": "pending",
      "weight": 0.05,
      "ordinal": -2,
      "source_id": null,
      "expected_date": "2026-05-31",
      "observed_date": null
    },
    {
      "kind": "llm_pre_event",
      "label": "Samsung secures approximately 30% of Nvidia's 2026 HBM4 allocation (vs SK hynix ~70%)",
      "source": "https://www.digitimes.com/news/a20251216PD218/hbm4-samsung-nvidia-2026-sk-hynix.html — Samsung nears deal to supply over 30% of Nvidia HBM4 in 2026",
      "status": "pending",
      "weight": 0.4,
      "ordinal": -1,
      "source_id": null,
      "confidence": 0.78,
      "expected_date": "2026-06-15",
      "research_origin": "deep_research",
      "expected_date_range": {
        "to": "2026-09-30",
        "from": "2026-03-01"
      },
      "measurement_criterion": "DigiTimes, TrendForce, or KED Global reports Samsung's confirmed HBM4 share for Nvidia at 28-32% range during 2026 ramp"
    },
    {
      "kind": "event",
      "label
... (truncated)