SK hynix (SKHY)
The desk's stance
On our research list, not on the slate.
What the company does
South Korean memory titan that pioneered modern HBM and was Nvidia’s original partner for co-packing memory next to the H100/H200. Now trades on Nasdaq as SKHY, sitting in the trillion-dollar club alongside Micron.
Why it matters: Micron’s only real HBM rival at the leading edge (Samsung trails). Together they decide how fast the whole AI buildout can go.
Outlook: Record-high operating margins on HBM3e premium pricing. Running at absolute maximum capacity — production slots fully spoken for through 2026/2027 by Nvidia and tier-1 hyperscalers.
In short: High-bandwidth AI memory manufacturer. Category: Mega-Cap AI Memory Leader. Sector: Technology, Semiconductors.
G-Street Value and Score
G-Street Value: $184.26, computed Oct 18, 2026 (confidence: low).
How we got there: 50% analyst leg $232.04 (street consensus, after 8% optimism discount) + 50% GainStreet factor value $136.49 (3.96× fwd EPS anchored to semiconductors multiples, cyclical cap applied) — analyst and factor views diverge >50%, confidence reduced. 5 analyst targets have no linked source and are shown but not counted; this value will not open a position until they are sourced.
G-Street Score: 73 out of 100 (Medium).
- Top-line growth & guidance: 27 of 32
- Margin power: 15 of 15
- Revenue visibility & quality: 6 of 11
- Profitability & balance sheet: 20 of 24
- Capital allocation & governance: 3 of 6
- Valuation, sentiment & momentum: 2 of 12
Our current thesis
Updated Oct 18, 2026
The thesis
- Dominant HBM market share powers hyper-accelerating top-line growth and record 76% gross margins.
- Extremely compressed 3.96x forward P/E severely discounts durable AI datacenter memory demand.
- Exceptional balance sheet strength with ₩66.9T net cash provides decisive downside protection.
Risks
- Fears of Chinese competitor CXMT expanding commodity server DRAM capacity could pressure pricing.
- High 2.39 beta creates severe drawdowns during broad semiconductor sector pullbacks.
- Aggressive industry-wide fab capex risks eventual oversupply when current AI hardware buildouts normalize.
What we're watching
- Q3 2026 earnings release scheduled for October 27, 2026, targeting ₩99.7T consensus revenue.
- Customer qualification milestones and yield progress for next-generation HBM4 packaging architecture.
- Price support near the 52-week low of $124.80 following the sharp two-week pullback.
Latest
SKHY fell 6.6% to $136.49, extending a two-week 30.0% decline toward its $124.80 52-week low despite hyper-accelerating revenue that reached ₩79.3T (+257% YoY) at 76.3% gross margins. The selloff reflects concerns regarding CXMT server DRAM advances, equipment export controls, and potential cyclical oversupply in commodity memory. Shares trade at an ultra-depressed 3.96x forward P/E backed by ₩66.9T net cash ahead of Q3 earnings on October 27, 2026.
Key numbers
As of Oct 16, 2026: market cap $994.8B · revenue growth +256.8% year over year · gross margin 76.3% · net margin 85.6% · forward P/E 4.0 · next earnings Oct 27, 2026.
Decision history
- Sep 23, 2026 — Sold at $189.28: +37.2% since entry (Target hit). Exit to reduce overlapping memory-cycle exposure under the fifteen-position ceiling, retaining Micron as the selected memory holding. HBM leadership and further upside remain plausible. The US security premium has not been independently verified, so it is not asserted as a fact or the sole exit justification. Book the gain at the guarded reference mark recorded in the receipt.
- Sep 8, 2026 — Buy Zone → Holding at $177. Up 28% from our $138 entry in three weeks with 15% left to our $204 value. The HBM lock-up is intact — 50%+ share, 2026 sold out, HBM4 sampling with TSMC — but buy-zone means buy today, and after a sprint like that this is a hold, not a chase.
- Aug 18, 2026 — Holding → Buy Zone at $155.62. The 9% memory-sector flush just re-opened the door: the HBM leader at a 40% gap to our value with 256% revenue growth. We held it through the run — at this price it is a buy again.
- Aug 12, 2026 — Buy Zone → Holding at $154.41. Dominant ~60% market share in HBM memory feeds Nvidia's Blackwell cycle; entry gain intact.
- Aug 8, 2026 — Moved to Buy Zone at $137.91. The HBM leader at 4x forward earnings, down 18% YTD while Micron tripled — the cheapest ticket to the memory supercycle.
On the Gainz Lab maps
Who it does business with
- SK hynix supplies TSMC — HBM memory (about $45.0B a year). SK hynix supplies cutting-edge memory stacks to TSMC’s foundry points for integration into the module.
- Micron competes with SK hynix — HBM leadership. Micron and SK hynix (with Samsung behind them) fight for every HBM design win; both are sold out through 2026.
- Samsung Electronics competes with SK hynix — HBM & DRAM. Samsung is racing to qualify HBM4 at Nvidia and reclaim the memory crown from its Korean rival.
In the Daily Brief
Named in 2 editions on 2 days.
- Sep 17, 2026: Yields finally took a breath and crude backed off, giving our SK Hynix setup room to run on Intel rumors
- Sep 4, 2026: Fed hike fears sent yields skyward, and our SKHY led the chip party like it heard nothing