Bottom Line
SK Hynix's share cancellation carries a headline figure of 3.295% and a net figure of roughly 0.87% — a gap of nearly four times. The difference comes from approximately 17.7 million new ADR shares issued over the same period. Seoul and New York did not assign different valuations to the same number; they were trading two entirely different variables: Korea traded "the company is retiring its own share base," while the US traded "where are we in the memory cycle."
Data basis: Korean equities are 2026-08-20 close (settled); US equities are 2026-08-20 intraday at 10:31 ET (not a closing print); Hong Kong is 08-19 close. FX as-of 2026-08-20.
How Much Was Actually Cancelled?
The filing was disclosed via DART after the Korean close on 2026-08-19 (receipt numbers 20260819800340 / 20260819000254).
| Item | Value |
|---|---|
| Shares cancelled | 24,070,000 |
| Amount | KRW 40,004,340,000,000 (~$28.7B) |
| Implied price per share | ~KRW 1,662,000 |
| Share base per filing | 730,492,365 |
| Headline percentage | 3.295% |
| New ADR shares over same period (broker estimate) | ~17,700,000 |
| Net reduction | ~6,370,000 shares ≈ 0.87% |
| Execution window | Three months from 2026-08-20, i.e. through 2026-11-19 |
The implied price of KRW 1,662,000 sits close to the KRW 1,691,000 close, indicating the cancellation was struck near market with no evident discount arrangement.
Why Both 3.295% and 0.87% Are Correct
The two numbers answer two different questions:
- 3.295% answers "how many shares did the company retire" — a fact of the filing itself, measured against the filing's stated share base.
- 0.87% answers "how much was per-share equity actually accreted" — which requires netting out dilution from concurrent ADR issuance.
What matters for valuation and EPS is the latter. Most wire coverage will cite only the first number — and that is currently the largest information gap on this story.
A Conflict of Interest That Must Be Disclosed
The netting conclusion — that ADR issuance offsets the buyback — comes from a Goldman Sachs note dated 2026-08-19 (lead analyst Giuni Lee). The same document discloses that the firm underwrote the ADR offering within the past 12 months and expects to continue receiving investment banking business from the issuer. In other words, the size of the dilution leg is supplied by the underwriter of that dilution.
The arithmetic itself can be independently verified from the two share counts (24,070,000 − 17,700,000 = 6,370,000; divided by 730,492,365 gives 0.872%). But the ADR issuance input comes from an interested party and warrants independent confirmation.
The same note flags its EPS revision as purely mechanical — the income statement is unchanged, only the denominator shrinks: 2026E +3.6%, 2027E +10.1%.
Why Were the Two Markets a Full Day Apart?
The filing landed after the Korean close on 08-19. The US session on 08-19 had ample time to read it — yet semiconductors still closed broadly lower that session. Korea did not react until its own 08-20 session, which opened straight into a double-digit move.
08-19 Settled US Closes
| Ticker | Close | Change |
|---|---|---|
| Broadcom AVGO | 362.48 | −4.61% |
| SanDisk SNDK | 1,568.87 | −3.50% |
| Semis ETF SMH | 560.92 | −1.55% |
| Micron MU | 937.105 | −0.39% |
| Nasdaq ETF QQQ | 716.08 | −0.20% |
| S&P ETF SPY | 769.06 | +0.21% |
The decisive detail is that the broad benchmarks did not confirm: SPY closed green, QQQ fell only marginally, and Hong Kong's Tracker Fund (02800) closed 08-19 at 26.0, +0.15%. The decline was concentrated in the semiconductor bucket — not a market-wide reduction in risk.
08-20 Korean Close (Settled)
| Ticker | Close | Change | Foreign flow | Foreign ownership |
|---|---|---|---|---|
| SK Hynix 000660 | KRW 1,691,000 | +12.73% | Net buy +312,973 sh | 51.00% → 51.03% |
| Samsung Electronics 005930 | KRW 271,000 | +9.49% | Net buy +4,221,606 sh | 46.76% → 46.82% |
Turnover expanded 29.6% and 15.0% respectively, with foreign investors flipping from large net selling in the prior session to net buying in both names. Backing out "everyone else" (predominantly retail) implies net selling on the day at 5.5% / 18.5% of turnover, versus net buying at 35.9% / 31.3% the prior session. The direction of turnover reversed wholesale — this was not one-sided accumulation.
US Session 08-20 Intraday: Storage Recovering, Benchmarks Falling
As of 2026-08-20 10:31 ET (intraday, not a close):
| Ticker | Last | Intraday change | Prior close (08-19) |
|---|---|---|---|
| SanDisk SNDK | 1,607.05 | +2.43% | 1,568.87 |
| Western Digital WDC | 472.00 | +2.14% | 462.09 |
| Micron MU | 954.60 | +1.87% | 937.11 |
| Semis ETF SMH | 561.90 | +0.17% | 560.92 |
| Nasdaq ETF QQQ | 712.30 | −0.53% | 716.08 |
| S&P ETF SPY | 766.44 | −0.34% | 769.06 |
This is the table worth remembering from the day: all three storage names up roughly 2%, while both broad benchmarks fall and the semiconductor ETF barely moves.
Three implications:
- Storage was not lifted by the tape. Benchmarks were lower, so this is sector-specific flow rather than a broad recovery in risk appetite.
- A flat SMH means rotation inside semis. Storage up ~2% failed to move the semiconductor ETF, implying something of comparable weight fell within the same bucket — rotation, not a sector-wide rally.
- Yesterday's decline was only partially retraced. SNDK fell 3.50% on 08-19 and is +2.43% intraday on 08-20 — still net negative across the two sessions. That is stabilization and partial recovery, not a confirmed trend reversal.
Three Falsifiable Things to Watch
- Cancellation execution: the window runs through 2026-11-19. If ADR issuance continues during that period, the net figure dilutes further — track the net number, not the headline.
- Continuity of Korean foreign flow: confirmation requires a second consecutive session of net buying with ownership ratios still rising. Either name flipping to net selling invalidates it. A single session on 08-20 is not a trend.
- Micron implied volatility: this stood at 72.4 on 08-19 against 20-day realized volatility of 100.37 — implied sits well below realized. If implied converges upward toward realized, the market is repricing this as a volatility regime shift; continued divergence argues for a one-off event.
Common Misreadings
- ❌ "SK Hynix bought back 3.3% of shares, so per-share value is accreted 3.3%" → the net figure is ~0.87%; ADR issuance offsets most of it.
- ❌ "The US market hadn't seen the news" → it had ample time to read it, and chose not to trade on that variable.
- ❌ "The storage sector is in a broad rebound" → 08-20 figures are intraday, and a flat semis ETF points to rotation within the sector.
- ❌ "Foreign capital is rotating back into Korean tech" → there is only one data point (08-20), and retail flipped to net selling the same day. That is turnover, not one-way inflow.
Sources: DART electronic disclosure (receipt numbers 20260819800340 / 20260819000254); Goldman Sachs note dated 2026-08-19 (Giuni Lee, including underwriter conflict-of-interest disclosure); market data via Tiger real-time feed.
Timing statement: Korean 08-20 figures are settled closing values; US figures are 08-20 intraday at 10:31 ET, not closing prices, and may still reverse direction on the day; Hong Kong figures are 08-19 close. This is public-layer market structure analysis containing no position, sizing, or trade execution information. It is not investment advice.