JONBUR Research · Update note
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SK hynix · 000660 · Semiconductors
SK hynix: Record Q3 profit expectations meet a sharp market sell-off
Why this report
Written after:
News on 2026-10-18 pointed to a record Q3 operating profit of about ₩77T, yet shares fell sharply as KOSPI opened down 3.2% on 2026-10-19. The earnings picture in our thesis is unchanged, but the price is now lower and the model's estimate sits well below the earlier-cited price range.
Written Oct 20, 2026 · Data as of Oct 19, 2026 · 0 views
This is not financial advice. The report does not recommend buying or selling anything.
What happened
On 2026-10-18 news reported that SK hynix's Q3 operating profit is expected to reach a record ₩77T, following a similar earnings surprise at Samsung Electronics. This is a media expectation, not a filed result, and we have no filing confirming it.
On 2026-10-19 KOSPI opened down 3.17% at 5,488.41, with SK hynix and Samsung Electronics falling sharply early in trading. SK hynix closed at ₩1,277,000 that day, down 31.2% over one month and 27.6% over three months, though still up 174.3% over one year. Later headlines dated 2026-10-20 mention further declines, with one citing a fall below ₩1.2M, and discuss Solidigm dual-listing concerns; we cannot verify those details from filings. No new filings were attached to these events.
Every earlier JONBUR Research report and update note on SK hynix, with Pro.
Unlock with ProModel estimate of fair value
- Bear
- ₩397,998
- -70%
- Base
- ₩543,989
- -59%
- Bull
- ₩744,567
- -44%
Model estimate based on the assumptions shown. Not a price target and not a buy or sell signal.
Base case of the 5-year discounted cash flow model on the stock's Valuation tab (statements TTM to H1 2026; discount rate 12.6%). Bear and Bull move the main assumptions by fixed steps. See and change the assumptions
Filings and data used
- Following Samsung Electronics, SK Hynix also expected to post a bonanza... Q3 operating profit seen at a record ₩77TOct 18, 2026
- KOSPI opens down 3.17% at 5,488.41...Samsung Electronics and SK Hynix plunge early in tradingOct 19, 2026
- Investor relations (IR) eventOct 14, 2026
- Change in Product and Service Transactions with Companies Controlled by the Same IndividualOct 6, 2026
- Insider shareholding reportSep 30, 2026
- Insider shareholding reportSep 22, 2026
- Exchange inquiry about a news report or price moveSep 18, 2026
- Exchange inquiry about a news report or price moveSep 9, 2026
- Response to rumour or news reportSep 4, 2026
- Disclosure on Large Business Group Status [Quarterly Disclosure (For Individual Company)]Aug 28, 2026
- Change in largest shareholder's holdingsAug 21, 2026
- Exchange inquiry about a news report or price moveAug 21, 2026
- Exchange inquiry about a news report or price moveAug 21, 2026
- Amended: Insider shareholding reportAug 21, 2026
- "Samsung Electronics at ₩670K, SK Hynix at ₩4.7M"...why Nomura picked them as 'buy'Oct 20, 2026
- Samsung Electronics closes down 3% after widening losses; SK Hynix also down 4.2% (comprehensive)Oct 20, 2026
- KB, Shinhan, Hana, Woori banks provide ₩2T to Hynix suppliersOct 20, 2026
- '1.2 million won Hynix' broken after six months: SK Hynix falls to 1.18 million won [Stock NOW]Oct 20, 2026
- Raising ₩100B to unlock ₩2T: Big 4 banks and Hynix to release funds for semiconductor suppliersOct 20, 2026
- Solidigm dual listing controversy; SK Hynix falls below 1.2 million won [Special Stock]Oct 20, 2026
- Will SK Hynix's Q3 operating profit exceed ₩80T? Attention also turns to SolidigmOct 20, 2026
- Sharp plunge in SK Hynix and Samsung Electronics; retail investors buy the dip [Top Investors Now]Oct 20, 2026
- SKHY rose 4.67%, so why did SK Hynix fall 6%?Oct 20, 2026
- SK Hynix and Square fall over 6% as Solidigm noise weighs on sharesOct 20, 2026
- Daily prices up to 2026-10-19
- Financial statements, trailing 12 months as of H1 2026
- Our fair value model, statements as of TTM to H1 2026
Report history
- Oct 28, 2026Update noteNews · Earnings · Buyback / dividend / value-upSK hynix posts record Q3 profit and announces ₩20.0T share buyback
- Oct 21, 2026Update noteModel fair value changeSK hynix: Model fair value estimate rises 60% to ₩872,969 base
- Oct 20, 2026Update noteNewsSK hynix: Record Q3 profit expectations meet a sharp market sell-off
- Oct 13, 2026InitiationSK hynix: Record Earnings Run Meets a Sharp Share Price Pullback
Source: KRX statistical information