# SK Hynix (000660.KO)

Canonical: https://gigainvestors.com/s/000660.KO

Analysis as of: 2026-10-16T07:33:29.466Z. Financial observations: FY2000–FY2025.

Listing currency: KRW. Reporting currency: KRW.

## Verdict

Not a wonderful business

Quality tests for Buy: not passed (profit record: pass; earnings resilience is evidence only). Published buy qualification: no.

Share price: KRW 1,262,000.00 per share; close as of 2026-10-15.

Estimated value: low KRW 900,730.44 per share, central KRW 1,235,957.94 per share, high KRW 1,431,161.51 per share. Buy at or below the central value KRW 1,235,957.94 per share. Valuation as of 2026-10-16T07:33:29.466Z; scenarios are not confidence intervals.

Expected annual return: 9.8% at the stated quote. About 9.8% a year at today's price (required return 10.0%). required return 10.0% a year (10% floor; KR 10-year bond 4.2% + 4 points).

## Checklist

### understandable: fail

- 3 revenue declines in the last 10 years (informational)

- operating margin variation exceeds 0.35

- Financial history: 10 years

- Years with declining revenue: 3

- Years with a net loss: 1

- Operating margin variation: 0.87×

Chart: Operating margin; fiscal year observations.

- FY2016: 0.19×

- FY2017: 0.46×

- FY2018: 0.52×

- FY2019: 0.10×

- FY2020: 0.16×

- FY2021: 0.29×

- FY2022: 0.15×

- FY2023: -0.24×

- FY2024: 0.35×

- FY2025: 0.49×

### moat: fail

- ROIC median below threshold

- ROIC worst years below threshold (more than 1 bad year allowed)

- ROIC, median of available years: 12.7%

- ROIC, second-lowest year: 4.1%

- Typical minus recent gross margin: -7.4 pp

- Typical gross margin (annual median): 40.7%

- Recent gross margin (lower of latest and 3-year median): 48.1%

- Years with nonpositive capital: 0

- Capital spending / revenue: 30.9%

- ROIC including acquisitions, ten-year median: 10.0%

Chart: ROIC excluding acquisitions; fiscal year observations.

- FY2016: 12.8%

- FY2017: 37.8%

- FY2018: 35.3%

- FY2019: 4.1%

- FY2020: 6.5%

- FY2021: 12.5%

- FY2022: 5.5%

- FY2023: -8.0%

- FY2024: 23.1%

- FY2025: 36.7%

### economics: fail

- working capital as a share of revenue rose more than 10pp and ends positive

- Owner earnings / net income, 5-yr: 1.02×

- Cash conversion uses consolidated totals: No

- Owner earnings, five-year total: KRW 67.02T

- Net income, five-year total: KRW 65.43T

- Return on incremental invested capital: 54.1%

- Working capital / revenue, annual change: 1.7 pp

- Working capital / revenue, change between three-year averages: 15.1 pp

- Working capital / revenue, final three-year average: 40.8%

Chart: Annual owner cash / profit; fiscal year observations.

- FY2021: 0.97×

- FY2022: -0.33×

- FY2023: 0.35×

- FY2024: 0.97×

- FY2025: 0.99×

### management: pass

- Historical market-dollar context (not the management verdict): 2017 to 2025 (8 years)

- buybacks unrelated to price (informational)

- ROIC first 3 years vs last 3 years: 35.3% vs 23.1%

- Per-share earnings: 15070.40 to 28419.00 (three-year endpoint medians)

- Management verdict uses per-share economic progress: Yes

- Ordinary dilution, 5-year annual growth: 0.8%

- Market cap gain: KRW 408.74T

- Cumulative retained earnings: KRW 79.29T

- Diluted shares, 5-year annual growth: 0.8%

- $1 test, starting fiscal year: FY2017

- $1 test, ending fiscal year: FY2025

- Per-share value growth: 11.2%

- Per-share value change: KRW 13K

- Per-share value, starting three-year median: KRW 15K

- Per-share value, ending three-year median: KRW 28K

- Average buyback yield: 4.2%

- Buyback history: 1 years

- Debt-funded buybacks: No

- Acquisition spending: KRW 4.49T

- Cumulative net income, 10 years: KRW 101.33T

- ROIC, first three-year median: 35.3%

- ROIC, last three-year median: 23.1%

Chart: Earnings per share; fiscal year observations.

- FY2017: KRW 15K

- FY2018: KRW 23K

- FY2019: KRW 3K

- FY2020: KRW 7K

- FY2021: KRW 14K

- FY2022: KRW 3K

- FY2023: KRW -13K

- FY2024: KRW 28K

- FY2025: KRW 60K

### accounting: pass

- Sloan accruals: -5.9%

- Receivables to sales index (DSRI): 0.95×

- Restructuring years, last five: 0

- Stock compensation / operating cash flow: 0.8%

- Earnings backed by cash: Yes

- Operating cash / earnings: 1.24×

- Accounting red flags: 0

- Goodwill and intangibles / equity: 0.03×

Chart: Sloan accruals; fiscal year observations.

- FY2016: -8.1%

- FY2017: -8.9%

- FY2018: -10.5%

- FY2019: -7.0%

- FY2020: -10.6%

- FY2021: -10.6%

- FY2022: -12.1%

- FY2023: -12.7%

- FY2024: -8.3%

- FY2025: -5.9%

## Holders

## Price story

Down 52% since Jun 2026 · sales +46.8%

Story as of 2026-10-16T09:59:56.410Z; price observation 2026-10-15.

Price needs cash profits to grow 6.8% a year for ten years

### Sales · FY2024–2025

sales +46.8%; source https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/; observed 2026-10-16.

- FY2016: KRW 17.20T 

- FY2017: KRW 30.11T 

- FY2018: KRW 40.45T 

- FY2019: KRW 26.99T 

- FY2020: KRW 31.90T 

- FY2021: KRW 43.00T 

- FY2022: KRW 44.62T 

- FY2023: KRW 32.77T 

- FY2024: KRW 66.19T 

- FY2025: KRW 97.15T 

### Gross margin · FY2025

gross margin 60.4%; source https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/; observed 2026-10-16.

- FY2016: 37.3% 

- FY2017: 57.8% 

- FY2018: 62.5% 

- FY2019: 30.3% 

- FY2020: 33.9% 

- FY2021: 44.1% 

- FY2022: 35.0% 

- FY2024: 48.1% 

- FY2025: 60.4% 

## Owner memo

Memo as of 2026-10-16T08:06:05.509Z.

### How it makes money

Operates in semiconductors; annual sales are KRW 97.1 trillion.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); FY2025: revenue 97146675000000; grossProfit 58690790000000; margin = grossProfit / revenue.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16); 000660.KO: SK hynix Inc. through its subsidiaries, engages in research, develops, manufactures, distributes, and sells semiconductor devices in Korea, China, rest of Asia, the United States, Europe, and internationally. It offers DRAM, such as server memory, graphics memory, mobile memory, PC memory, consumer memory; NAND flash memory; SSD; and MCP products. It also engages in foundry business, produces non-memory semiconductors. The company serves its products for server, networking, mobile, personal computer, consumer, and automotive applications. The company was formerly known as Hynix Semiconductor Inc. and changed its name to SK hynix Inc. in March 2012. SK hynix Inc. was incorporated in 1949 and is headquartered in Icheon-si, South Korea.

### Why customers stay

It earns 12.7% on its capital.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); FY2023: grossProfit / revenue = -1.6%.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); FY2024: grossProfit / revenue = 48.1%.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); FY2025: grossProfit / revenue = 60.4%.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); 10-year return on capital observations [[2016,0.12842739986571447],[2017,0.3781358859547865],[2018,0.35261564051283245],[2019,0.04082105625414155],[2020,0.06468357151536108],[2021,0.1251484178226873],[2022,0.05474462904137986],[2023,-0.08014916075282065],[2024,0.23071495813204862],[2025,0.3674613974203721]]; median 0.12678790884420088. ROIC follows the displayed moat series; financial companies use return on tangible equity.

### Where the cash goes

Spends 34.5% of cash earnings on expansion; earns 54.1% on new investment.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); FY2016: growth capex 0; upkeep 6486729000000; owner earnings 923500000000. Growth capex / owner earnings = 0.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); FY2017: growth capex 0; upkeep 9128303000000; owner earnings 5562311000000. Growth capex / owner earnings = 0.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); FY2018: growth capex 0; upkeep 16036146000000; owner earnings 6191053000000. Growth capex / owner earnings = 0.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); FY2020: growth capex 296469000000; upkeep 9772193000000; owner earnings 4426358800000. Growth capex / owner earnings = 0.066978076878901.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); FY2021: growth capex 1828137000000; upkeep 10658498000000; owner earnings 9297163600000. Growth capex / owner earnings = 0.196633842175263.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); FY2024: growth capex 4081103000000; upkeep 12581537000000; owner earnings 19235005800000. Growth capex / owner earnings = 0.21217061447415836.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); FY2025: growth capex 14649213000000; upkeep 13930130000000; owner earnings 42417298400000. Growth capex / owner earnings = 0.3453594064821441.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); Incremental return on capital 0.541459765718466, from the economics test's unchanged annual inputs.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); Dividend observations: [[2016,353001000000],[2017,423601000000],[2018,706002000000],[2019,1026003000000],[2020,684002000000],[2021,800282000000],[2022,1677821000000],[2023,825575000000],[2024,826323000000],[2025,1681166000000]]. Zero only counted when supported by a complete cash-flow statement.

### Are managers owners

Insiders own 20.2% of the company.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16); 000660.KO SharesStats.PercentInsiders = 20.173 percentage points; cache date 2026-10-16.

### What the price says

The price assumes cash profits grow 6.8% yearly over ten years.

- Source: https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds/ (filed 2026-10-16T07:33:29.466Z); Ten-year compound average after fade. Initial solved rate 0.0841822804020137. Price 1262000; FX 1; discount 0.1; same standard ten-year fade to terminal 0.03.  Closing-price date 2026-10-15.

## Monthly share-price history (KRW per share)

- 2016-10: KRW 41,000.00 per share

- 2016-11: KRW 42,900.00 per share

- 2016-12: KRW 44,700.00 per share

- 2017-01: KRW 53,700.00 per share

- 2017-02: KRW 46,700.00 per share

- 2017-03: KRW 50,500.00 per share

- 2017-04: KRW 54,000.00 per share

- 2017-05: KRW 57,000.00 per share

- 2017-06: KRW 67,400.00 per share

- 2017-07: KRW 66,000.00 per share

- 2017-08: KRW 68,600.00 per share

- 2017-09: KRW 82,900.00 per share

- 2017-10: KRW 82,200.00 per share

- 2017-11: KRW 76,800.00 per share

- 2017-12: KRW 76,500.00 per share

- 2018-01: KRW 73,500.00 per share

- 2018-02: KRW 76,800.00 per share

- 2018-03: KRW 81,300.00 per share

- 2018-04: KRW 84,500.00 per share

- 2018-05: KRW 93,400.00 per share

- 2018-06: KRW 85,700.00 per share

- 2018-07: KRW 86,300.00 per share

- 2018-08: KRW 83,000.00 per share

- 2018-09: KRW 73,100.00 per share

- 2018-10: KRW 68,200.00 per share

- 2018-11: KRW 69,600.00 per share

- 2018-12: KRW 60,500.00 per share

- 2019-01: KRW 73,900.00 per share

- 2019-02: KRW 70,000.00 per share

- 2019-03: KRW 74,200.00 per share

- 2019-04: KRW 79,000.00 per share

- 2019-05: KRW 65,300.00 per share

- 2019-06: KRW 69,500.00 per share

- 2019-07: KRW 76,900.00 per share

- 2019-08: KRW 77,400.00 per share

- 2019-09: KRW 82,200.00 per share

- 2019-10: KRW 82,000.00 per share

- 2019-11: KRW 80,900.00 per share

- 2019-12: KRW 94,100.00 per share

- 2020-01: KRW 93,500.00 per share

- 2020-02: KRW 87,900.00 per share

- 2020-03: KRW 83,300.00 per share

- 2020-04: KRW 83,700.00 per share

- 2020-05: KRW 81,500.00 per share

- 2020-06: KRW 85,100.00 per share

- 2020-07: KRW 82,800.00 per share

- 2020-08: KRW 75,100.00 per share

- 2020-09: KRW 84,000.00 per share

- 2020-10: KRW 79,900.00 per share

- 2020-11: KRW 97,500.00 per share

- 2020-12: KRW 118,500.00 per share

- 2021-01: KRW 122,500.00 per share

- 2021-02: KRW 141,500.00 per share

- 2021-03: KRW 132,500.00 per share

- 2021-04: KRW 128,000.00 per share

- 2021-05: KRW 127,000.00 per share

- 2021-06: KRW 127,500.00 per share

- 2021-07: KRW 112,500.00 per share

- 2021-08: KRW 106,500.00 per share

- 2021-09: KRW 103,000.00 per share

- 2021-10: KRW 103,000.00 per share

- 2021-11: KRW 114,000.00 per share

- 2021-12: KRW 131,000.00 per share

- 2022-01: KRW 120,500.00 per share

- 2022-02: KRW 123,500.00 per share

- 2022-03: KRW 118,000.00 per share

- 2022-04: KRW 112,500.00 per share

- 2022-05: KRW 108,000.00 per share

- 2022-06: KRW 91,000.00 per share

- 2022-07: KRW 97,900.00 per share

- 2022-08: KRW 95,200.00 per share

- 2022-09: KRW 83,100.00 per share

- 2022-10: KRW 82,700.00 per share

- 2022-11: KRW 85,000.00 per share

- 2022-12: KRW 75,000.00 per share

- 2023-01: KRW 88,500.00 per share

- 2023-02: KRW 89,400.00 per share

- 2023-03: KRW 88,600.00 per share

- 2023-04: KRW 89,500.00 per share

- 2023-05: KRW 108,600.00 per share

- 2023-06: KRW 115,200.00 per share

- 2023-07: KRW 123,400.00 per share

- 2023-08: KRW 121,800.00 per share

- 2023-09: KRW 114,700.00 per share

- 2023-10: KRW 116,300.00 per share

- 2023-11: KRW 133,900.00 per share

- 2023-12: KRW 141,500.00 per share

- 2024-01: KRW 134,700.00 per share

- 2024-02: KRW 156,200.00 per share

- 2024-03: KRW 183,000.00 per share

- 2024-04: KRW 174,200.00 per share

- 2024-05: KRW 189,200.00 per share

- 2024-06: KRW 236,500.00 per share

- 2024-07: KRW 194,600.00 per share

- 2024-08: KRW 173,700.00 per share

- 2024-09: KRW 174,600.00 per share

- 2024-10: KRW 186,300.00 per share

- 2024-11: KRW 159,900.00 per share

- 2024-12: KRW 173,900.00 per share

- 2025-01: KRW 199,200.00 per share

- 2025-02: KRW 190,200.00 per share

- 2025-03: KRW 190,700.00 per share

- 2025-04: KRW 177,500.00 per share

- 2025-05: KRW 204,500.00 per share

- 2025-06: KRW 292,000.00 per share

- 2025-07: KRW 273,500.00 per share

- 2025-08: KRW 269,000.00 per share

- 2025-09: KRW 347,500.00 per share

- 2025-10: KRW 559,000.00 per share

- 2025-11: KRW 530,000.00 per share

- 2025-12: KRW 651,000.00 per share

- 2026-01: KRW 909,000.00 per share

- 2026-02: KRW 1,061,000.00 per share

- 2026-03: KRW 807,000.00 per share

- 2026-04: KRW 1,286,000.00 per share

- 2026-05: KRW 2,333,000.00 per share

- 2026-06: KRW 2,650,000.00 per share

- 2026-07: KRW 1,718,000.00 per share

- 2026-08: KRW 1,674,000.00 per share

- 2026-09: KRW 1,776,000.00 per share

- 2026-10: KRW 1,443,000.00 per share

## Annual estimated value (KRW per share)

- FY2017: low KRW 74,363.79 per share, central KRW 83,063.55 per share, high KRW 94,644.79 per share

- FY2018: low KRW 98,557.98 per share, central KRW 110,622.00 per share, high KRW 126,681.76 per share

- FY2019: low KRW 63,452.01 per share, central KRW 71,502.85 per share, high KRW 82,220.23 per share

- FY2020: low KRW 77,041.44 per share, central KRW 86,793.91 per share, high KRW 99,776.52 per share

- FY2021: low KRW 115,984.58 per share, central KRW 130,409.78 per share, high KRW 149,612.77 per share

- FY2022: low KRW 106,427.02 per share, central KRW 119,994.98 per share, high KRW 138,056.80 per share

- FY2024: low KRW 197,816.17 per share, central KRW 274,660.07 per share, high KRW 319,406.41 per share

- FY2025: low KRW 448,431.06 per share, central KRW 620,583.78 per share, high KRW 720,828.62 per share

Historical values use today's bond yield for every fiscal year

Historical values use today's FX rate into trading currency for every fiscal year

Historical values use current restated fundamentals and current commodity classification; they are not point-in-time estimates

## Sources

Estimates depend on assumptions and are not guarantees or investment advice. Underlying data remains subject to its source licenses; public reading does not grant bulk redistribution rights.
← Companies

SK Hynix

000660 · KO

KOSPI 200

Not a wonderful business

2 quality tests fail. A lower price would not fix the business.

Share price
KRW 1,262,000.00
Buy up to
KRW 1,235,957.94
Expected / yr
9.8% at today's price (10.0% at central value)

The business

How it makes money
Why customers stay
Where the cash goes
Are managers owners
What the price says

1. Is this a good business?

Evidence only; not required for Buy

Margins varied 87.1% around their average (limit 35%).

10y median
24.0%
Worst year
-23.6%
Latest · 2025
48.6%

Capital return excluding acquisitions: median 12.7% (minimum 15%), and the second-worst year 4.1% (minimum 10%).

10y median
12.7%
Worst year
-8.0%
Latest · 2025
36.7%

Working capital rose 15.1% of sales (limit 10%) to 40.8% (waived at zero or below).

Five-year totals
1.02×
Annual median
0.97×
Latest · 2025
0.99×

Per-share value rose from 15070.4 to 28419, comparing three-year medians at each end (must rise and stay positive).

9y median
KRW 14K
Worst year
KRW -13K
Latest · 2025
KRW 60K

Profits were backed by cash: accruals were -5.9% of assets (limit 10%).

10y median
-9.7%
Worst year
-5.9%
Latest · 2025
-5.9%

Profit record · pass 1 loss year in 10 (at most 2), mean operating margin 24.7%, three-year average owner earnings per share 27,554.58 KRW.

2. Is the price low enough?

Price & return math
Value rangeKRW 900,730.44 – KRW 1,431,161.51
Buy at or belowCentral value KRW 1,235,957.94
Discount to value1 − 1262000.00 / 1235957.94 = -2.1%
Return / yearAbout 9.8% a year at today's price (required return 10.0%)
Cash-flow inputsOwner cash KRW 57541.90/share; 8.0% growth for 5 years, then fades to 3.0%; excess cash KRW 118447.47/share today.
Required return10.0% / year, earned by construction at the central value
RevenueKRW 97.15T
97.15T020162025
FY2016 · Revenue: KRW 17.20T; FY2017 · Revenue: KRW 30.11T; FY2018 · Revenue: KRW 40.45T; FY2019 · Revenue: KRW 26.99T; FY2020 · Revenue: KRW 31.90T; FY2021 · Revenue: KRW 43.00T; FY2022 · Revenue: KRW 44.62T; FY2023 · Revenue: KRW 32.77T; FY2024 · Revenue: KRW 66.19T; FY2025 · Revenue: KRW 97.15T
Revenue
Owner earningsKRW 42.42T
42.42T-3.59T20162025
FY2016 · Owner earnings: KRW 924B; FY2017 · Owner earnings: KRW 5.56T; FY2018 · Owner earnings: KRW 6.19T; FY2019 · Owner earnings: KRW -3.59T; FY2020 · Owner earnings: KRW 4.43T; FY2021 · Owner earnings: KRW 9.30T; FY2022 · Owner earnings: KRW -743B; FY2023 · Owner earnings: KRW -3.19T; FY2024 · Owner earnings: KRW 19.24T; FY2025 · Owner earnings: KRW 42.42T
Owner earnings
Operating margin48.6%
51.5%-23.6%20162025
FY2016 · Operating margin: 19.1%; FY2017 · Operating margin: 45.6%; FY2018 · Operating margin: 51.5%; FY2019 · Operating margin: 10.1%; FY2020 · Operating margin: 15.7%; FY2021 · Operating margin: 28.9%; FY2022 · Operating margin: 15.3%; FY2023 · Operating margin: -23.6%; FY2024 · Operating margin: 35.5%; FY2025 · Operating margin: 48.6%
Operating margin
Net cash / debtKRW 12.89T
12.89T-20.46T20162025
FY2016 · Net cash / debt: KRW -197B; FY2017 · Net cash / debt: KRW 4.39T; FY2018 · Net cash / debt: KRW 3.09T; FY2019 · Net cash / debt: KRW -6.52T; FY2020 · Net cash / debt: KRW -6.30T; FY2021 · Net cash / debt: KRW -8.95T; FY2022 · Net cash / debt: KRW -16.59T; FY2023 · Net cash / debt: KRW -20.46T; FY2024 · Net cash / debt: KRW -8.48T; FY2025 · Net cash / debt: KRW 12.89T
Net cash / debt
Diluted shares711M
711M020162025
FY2017 · Diluted shares: 706M; FY2018 · Diluted shares: 684M; FY2019 · Diluted shares: 684M; FY2020 · Diluted shares: 684M; FY2021 · Diluted shares: 688M; FY2022 · Diluted shares: 688M; FY2023 · Diluted shares: 688M; FY2024 · Diluted shares: 696M; FY2025 · Diluted shares: 711M
Diluted shares
Prices 15 Oct 2026 · FY2025