High operating margin Korean stocks
Operating margin of 20% or more on quarterly revenue of at least ₩5bn. Add more filters below to narrow the list.
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222 Korean listed companies match this signal: operating margin of 20% or more on quarterly revenue of at least ₩5bn. Based on Q2 2026 reports. 60 are on KOSPI and 162 on KOSDAQ. Sorted by largest latest-quarter operating profit, the list starts with Samsung Electronics, SK hynix and SK Square. 22 of them also carry a red flag such as losses or dilution; check the signals column.
Op. margin 20%+ 222
| Company | Articles 24h | Latest quarter op. profit | Dividend yield | Signals |
|---|---|---|---|---|
| Samsung Electronics KOSPI · Telecom & broadcasting equipment | 110 | ₩89.49tn +1814% | 1.5% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower Insider buying Insider selling |
| SK hynix KOSPI · Semiconductors | 63 | ₩60.54tn +557% | 0.4% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower |
| SK Square KOSPI | 2 | ₩19.24tn +1273% | – | Profit +50% Op. margin 20%+ |
| GS Holdings KOSPI | 2 | ₩1.72tn +254% | – | Profit +50% Revenue & profit growth Op. margin 20%+ |
| Samsung Biologics KOSPI · Pharmaceutical ingredients | 9 | ₩586bn +23% | – | Op. margin 20%+ Supply contract |
| LG KOSPI · Other financial services | 4 | ₩533bn +92% | 3.4% | Profit +50% Revenue & profit growth Op. margin 20%+ |
| Celltrion KOSPI · Pharmaceutical ingredients | 5 | ₩452bn +86% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| KT&G KOSPI · Tobacco | 15 | ₩414bn +18% | 4.1% | Op. margin 20%+ Dividend grower |
| Krafton KOSPI · Software publishing | 2 | ₩411bn +67% | 0.9% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Insider buying Major holder adding |
| Misto Holdings KOSPI | 0 | ₩295bn +62% | – | Profit +50% Revenue & profit growth Op. margin 20%+ Share pledge |
| HD Hyundai Electric KOSPI | 0 | ₩287bn +37% | – | Revenue & profit growth Op. margin 20%+ |
| Hyosung KOSPI | 1 | ₩232bn +134% | – | Profit +50% Revenue & profit growth Op. margin 20%+ Insider buying Supply contract Share pledge |
| KakaoBank KOSPI · Banks | 7 | ₩194bn +14% | 2.0% | Op. margin 20%+ Dividend grower |
| Apr KOSPI · Specialty chemicals | 0 | ₩191bn +125% | 1.7% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ M&A / stake deal |
| Samyang Foods KOSPI · Food products | 40 | ₩176bn +47% | 0.4% | Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower |
| NC KOSPI · Software publishing | 72 | ₩174bn +1053% | 0.5% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend cut |
| HanaMicron KOSDAQ | 4 | ₩142bn +371% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Hanmi Pharm KOSPI · Pharmaceuticals | 23 | ₩131bn +117% | 0.8% | Profit +50% Revenue & profit growth Op. margin 20%+ Dividend grower Share pledge |
| HANMI Semiconductor KOSPI | 1 | ₩130bn +51% | 0.4% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower |
| Jeju Semiconductor KOSDAQ | 0 | ₩122bn +2709% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| DB HiTek KOSPI | 0 | ₩105bn +43% | – | Revenue & profit growth Op. margin 20%+ |
| Hankook & Company KOSPI · Other financial services | 2 | ₩100bn +36% | 3.9% | Op. margin 20%+ Dividend grower |
| SK biopharmaceuticals KOSPI · Research & development | 56 | ₩97.1bn +57% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Insider buying Supply contract |
| Daehan Shipbuilding KOSPI | 0 | ₩95.2bn +52% | – | Profit +50% Revenue & profit growth Op. margin 20%+ |
| F&F KOSPI | 1 | ₩86.5bn +3% | – | Op. margin 20%+ |
| Kyung Dong Navien KOSPI · Electrical equipment | 19 | ₩84.3bn +65% | – | Profit +50% Op. margin 20%+ |
| Silicon 2 KOSDAQ | 0 | ₩83.0bn +59% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Asset deal |
| Isupetasys KOSPI | 0 | ₩77.1bn +83% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Woori Technology Investment KOSDAQ | 0 | ₩75.8bn -54% | – | Op. margin 20%+ |
| LEENO Industrial KOSDAQ | 0 | ₩73.5bn +38% | – | Revenue & profit growth Op. margin 20%+ |
| DoubleUGames KOSPI | 0 | ₩70.1bn +29% | – | Revenue & profit growth Op. margin 20%+ |
| PearlAbyss KOSDAQ · Software publishing | 10 | ₩67.6bn | – | Turnaround Revenue +30% Op. margin 20%+ |
| PharmaResearch KOSDAQ · Medical supplies | 1 | ₩66.5bn +19% | 0.9% | Revenue & profit growth Op. margin 20%+ Dividend grower |
| Korea Line KOSPI | 0 | ₩62.9bn +90% | – | Profit +50% Op. margin 20%+ New 5% holder Major holder adding Supply contract Share pledge |
| Sanil Electric KOSPI | 0 | ₩62.0bn +34% | – | Revenue & profit growth Op. margin 20%+ |
| LX Holdings KOSPI | 0 | ₩60.3bn +42% | – | Revenue +30% Revenue & profit growth Op. margin 20%+ Insider buying Insider selling |
| Hugel KOSDAQ | 1 | ₩56.0bn -1% | – | Op. margin 20%+ Insider buying |
| JW Holdings KOSPI | 0 | ₩53.8bn +31% | – | Revenue & profit growth Op. margin 20%+ |
| Tse KOSDAQ | 1 | ₩52.5bn +255% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ New 5% holder Major holder adding |
| Lotte Tour Development KOSPI | 3 | ₩51.9bn +57% | – | Profit +50% Revenue & profit growth Op. margin 20%+ |
| Hankuk Carbon KOSPI | 2 | ₩50.4bn +59% | – | Profit +50% Op. margin 20%+ |
| PSK KOSDAQ | 0 | ₩50.3bn +144% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Hansol Chemical KOSPI | 1 | ₩49.8bn +2% | – | Op. margin 20%+ New 5% holder Major holder adding Share pledge |
| Yg-1 KOSDAQ | 0 | ₩47.7bn +207% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Control change Share pledge |
| d'Alba Global KOSPI | 0 | ₩47.2bn +62% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Insider buying Insider selling |
| Classys KOSDAQ | 0 | ₩43.9bn +2% | – | Op. margin 20%+ |
| Poongsan Holdings KOSPI | 0 | ₩41.3bn +39% | – | Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Douzone Bizon KOSPI · Software development & IT services | 0 | ₩41.1bn +63% | 0.7% | Profit +50% Revenue & profit growth Op. margin 20%+ Dividend grower |
| DI KOSPI | 0 | ₩39.6bn +223% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| EO Technics KOSDAQ | 0 | ₩39.1bn +51% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Oscotec KOSDAQ | 0 | ₩38.7bn | – | Turnaround Revenue +30% Op. margin 20%+ |
| Miwon Specialty Chemical KOSPI | 0 | ₩37.1bn +93% | – | Profit +50% Revenue & profit growth Op. margin 20%+ |
| HD Hyundai Energy Solutions KOSPI | 0 | ₩36.1bn +140% | – | Profit +50% Revenue & profit growth Op. margin 20%+ |
| Alteogen KOSDAQ | 3 | ₩34.2bn | 0.1% | Turnaround Revenue +30% Op. margin 20%+ |
| NICE Information Service KOSPI | 0 | ₩32.9bn +19% | – | Op. margin 20%+ |
| i-Scream Media KOSDAQ | 3 | ₩32.3bn +34% | – | Revenue & profit growth Op. margin 20%+ |
| KSS Line KOSPI | 0 | ₩32.0bn +45% | – | Revenue & profit growth Op. margin 20%+ |
| HD-Hyundai Marine Engine KOSPI | 0 | ₩31.3bn +79% | – | Profit +50% Revenue & profit growth Op. margin 20%+ |
| Korea Asset IN Trust KOSPI | 0 | ₩31.0bn +274% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| HPSP KOSDAQ | 0 | ₩28.3bn -1% | – | Op. margin 20%+ |
| Shift UP KOSPI | 0 | ₩28.1bn -59% | – | Op. margin 20%+ |
| Yas KOSDAQ | 0 | ₩28.0bn | – | Turnaround Op. margin 20%+ Share pledge |
| Myungin Pharm KOSPI | 0 | ₩27.6bn +10% | – | Op. margin 20%+ |
| Tokai Carbon Korea KOSDAQ | 0 | ₩26.8bn +38% | – | Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Tes KOSDAQ | 2 | ₩26.0bn +28% | – | Revenue +30% Revenue & profit growth Op. margin 20%+ New 5% holder Major holder adding Share pledge |
| Hana Materials KOSDAQ | 2 | ₩26.0bn +206% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Shinhan Alpha REIT KOSPI | 0 | ₩25.3bn -8% | – | Op. margin 20%+ Insider buying |
| KX Innovation KOSDAQ | 0 | ₩25.2bn +38% | – | Revenue & profit growth Op. margin 20%+ |
| T&L KOSDAQ | 0 | ₩25.0bn +150% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| ValueAddedTechnology KOSDAQ | 0 | ₩24.5bn +45% | – | Op. margin 20%+ |
| Miwon Chemicals KOSPI | 0 | ₩24.3bn +195% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Kctech KOSPI | 0 | ₩23.5bn +51% | – | Profit +50% Revenue & profit growth Op. margin 20%+ |
| Protec KOSDAQ | 0 | ₩23.1bn +135% | – | Profit +50% Revenue & profit growth Op. margin 20%+ |
| PI Advanced Materials KOSPI | 0 | ₩23.0bn +42% | – | Op. margin 20%+ |
| Mirae Asset Venture Investment KOSDAQ | 0 | ₩22.4bn +403% | – | Profit +50% Op. margin 20%+ Insider buying Insider selling |
| Kona I KOSDAQ · Software publishing | 5 | ₩21.4bn +24% | – | Revenue & profit growth Op. margin 20%+ Bonus issue |
| ISC KOSDAQ | 1 | ₩21.3bn +55% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Korea Ratings KOSDAQ | 0 | ₩20.9bn +0% | – | Op. margin 20%+ |
| Sejin Heavy Industries KOSPI | 0 | ₩20.4bn +132% | – | Profit +50% Op. margin 20%+ |
| VM KOSDAQ | 0 | ₩20.1bn +353% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Vitzrocell KOSDAQ | 0 | ₩18.8bn +16% | – | Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Seobu T&D KOSDAQ | 0 | ₩18.3bn +63% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Sena Technologies KOSDAQ | 0 | ₩18.0bn +128% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| InBody KOSDAQ | 0 | ₩17.7bn +71% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Share pledge |
| Yunsung F&C KOSDAQ | 0 | ₩17.1bn | – | Turnaround Revenue +30% Op. margin 20%+ |
| Woorison F&G KOSDAQ | 0 | ₩17.0bn +3% | – | Op. margin 20%+ |
| Hy-lok KOSDAQ | 0 | ₩17.0bn +3% | – | Op. margin 20%+ |
| Hanjinkal KOSPI | 1 | ₩16.8bn +70% | – | Profit +50% Op. margin 20%+ |
| Worldexindustry&trading KOSDAQ | 0 | ₩16.5bn +97% | – | Profit +50% Revenue & profit growth Op. margin 20%+ |
| Fadu KOSDAQ | 0 | ₩16.2bn | – | Turnaround Revenue +30% Op. margin 20%+ New 5% holder Major holder adding Supply contract |
| Solborn KOSDAQ | 0 | ₩16.0bn -26% | – | Op. margin 20%+ Insider buying |
| Cmtx KOSDAQ | 0 | ₩15.6bn -41% | – | Op. margin 20%+ |
| Digital Daesung KOSDAQ | 0 | ₩15.1bn +50% | – | Revenue & profit growth Op. margin 20%+ |
| DIT KOSDAQ | 0 | ₩14.1bn +66% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Micro Contact Solution KOSDAQ | 0 | ₩13.9bn +277% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| GwangjuShinsegae KOSPI | 2 | ₩13.9bn +18% | – | Op. margin 20%+ |
| PSK Holdings KOSDAQ | 0 | ₩13.8bn +63% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| S&S Tech KOSDAQ | 0 | ₩13.6bn +2% | – | Op. margin 20%+ |
| JVM KOSDAQ | 0 | ₩13.5bn +24% | – | Op. margin 20%+ |
| Pharmicell KOSPI | 0 | ₩13.2bn +62% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
Signals are generated automatically from DART filings (quarterly results, ownership reports, major-event reports and filing titles) and news counts. Prices and trading flows are not included. Not investment advice.
What this list means
Companies with quarterly revenue of at least ₩5bn that kept more than 20% of it as operating profit. Margins differ widely by industry, so compare within an industry.
Lists are generated automatically from filings and are not investment advice.