Memory Semi Sector IC Memo

Executive Summary & Action Plan

Verdict

Selective BUY — Yesterday's crash was a positioning unwind, not a fundamentals break. It reopened the risk/reward we said was exhausted. Top pick: Samsung Electronics (005930.KS), now +57% below our fair value.

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Price ₩286,000 | Market cap ₩1,648.6T | Target ₩450,000 | Upside +57.3% Top Pick: Samsung Electronics (005930.KS) · IWANNAVY Fair Value (set 2026-06-30) · price as of 2026-07-02 close

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Abstract

On 2026-07-02 the memory complex crashed — Samsung −9.1%, SK Hynix −14.6%, Micron −10.6%, SanDisk −10.6%, Kioxia −13.5% — while NVIDIA fell only 1.3%, marking this as a memory-specific positioning event rather than an AI demand break. Our verification attributes the move to a narrative-and-leverage unwind: Bloomberg's "Meta Compute" report recast hyperscalers as potential compute sellers, a DRAM antitrust class action and Apple's China-memory lobbying added legal and sourcing overhangs, and Korea's half-year foreign rebalancing collided with record margin debt. Critically, DRAM/NAND contract prices were still rising into Q3 and 2026 HBM capacity remains sold out, so our 6/30 fair values stand. The crash therefore reprices the sector's risk/reward: Samsung — the only name whose cheapness survives peak-margin normalization (~17x) — now offers +57% to fair value, Micron +26%, while SanDisk remains −26% overvalued even after falling. We rate the sector selective BUY with staged entries, respecting that leverage unwinds rarely finish in one session.

Action Plan

Stage into quality: Samsung first, Micron second. Do not catch SanDisk. Confirmation to add: DRAM Q3 contract prints and a stabilizing KOSPI margin-debt tape.

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Confidence: Medium — fair values re-verified against the crash cause; unwind depth unknown.

What Happened — the 7/2 Crash, Verified

Price-gap alerts (±5%) require cause verification before we publish. Findings: no contract-price collapse and no HBM order cuts. The sell-off stacked five triggers — (1) Bloomberg's 7/1 report that Meta is building a cloud business to sell excess AI compute, flipping the "hyperscalers as buyers" narrative; (2) profit-taking on parabolic 12-month runs (SK Hynix ~+750%, Micron ~+740%); (3) a 6/25 US DRAM antitrust class action against all three IDMs; (4) reports Apple is lobbying to buy Chinese memory; (5) Korea's half-year foreign rebalancing (~₩150T H1 net selling) amplified by record margin debt into forced liquidation. TrendForce contract data shows DRAM/NAND prices still rising into Q3 with 2026 HBM sold out — the fundamentals we priced on 6/30 are intact. A genuine thesis reset would require contract-price rollover or a hyperscaler capex guide-down.

State of the Sector — What to Watch Now

DRAM/NAND Q3 contract negotiations (Jul–Sep): still the single most important print. Double-digit QoQ keeps the cycle thesis; single-digit or flat confirms deceleration.
Samsung Q2 preliminary (~Jul 8) and SK Hynix Q2 (~Jul 24): record prints expected; watch HBM4 revenue share and any ASP-deceleration language.
SK Hynix Nasdaq ADR listing (~Jul 10, $29.4B raise): a supply/volatility event for both Korean names.
KOSPI margin-debt unwind depth: forced selling rarely clears in one session; watch reverse-margin-call balances and foreign flow stabilization.
Meta Compute follow-through: if hyperscalers reselling compute becomes a trend, AI-capex growth assumptions get a haircut.

What to Watch Next — Technology

HBM4/HBM4E ramp (NVIDIA Rubin, H2'26–2027): the profit pool migrates another generation; SK Hynix leads, Samsung's qualification is the swing factor.
CXMT commodity-DRAM entry (2027E, ~13–17% capacity): the structural bear case for commodity pricing — the reason we normalize peak margins.
HBF (High-Bandwidth Flash): SanDisk–SK Hynix standardization effort; if NAND gets an HBM-like premium tier, NAND pure-plays re-rate.
1c-nm DRAM node and hybrid bonding: cost-per-bit and stacking economics that decide 2027+ margin structure.

Fair Value Notes (set 2026-06-30, re-verified 2026-07-02)

Method: per-stock log-median of DCF, EV/EBITDA, and EV/FCF with peak-margin normalization — headline multiples in a cyclical peak flatter every name; only Samsung's discount survives normalization (~17x vs peers' 32–62x).

Samsung ₩450,000 — the only normalization-survivor; HBM4 catch-up optionality; diversified cushion.
SK Hynix ₩2,150,000 — HBM leadership is real, but normalized ~49x; the crash merely brought price back to fair.
Micron $1,300 — quality momentum, but FCF-thin (capex cycle); now +26% upside after the drop.
SanDisk $1,500 — NAND pure-play at peak gross margins; still −26% rich after falling 11%.
Kioxia ¥80,000 — near fair; JPY data caveats persist.

Catalysts & Risks

Catalyst	Timing	Impact	·	Risk	Prob	Impact
Q3 DRAM/NAND contract prints	Jul–Sep	High	·	Margin-debt unwind second leg	Med-High	High
Samsung Q2 prelim / SK Q2	Jul 8 / Jul 24	High	·	DRAM antitrust class action	Med	Med
SK Hynix Nasdaq ADR	~Jul 10	Med	·	Meta-Compute → AI-capex haircut narrative	Med	High
HBM4 Rubin ramp	H2'26	High	·	2027 CXMT commodity oversupply	Med	High

References

Note: fair values were set 2026-06-30 and re-verified against the 7/2 crash cause (positioning unwind; contract prices still rising). Prices are 7/2 closes from market data. A contract-price rollover or hyperscaler capex guide-down would trigger a fair-value review.