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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225 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 165 on KOSDAQ. Sorted by largest latest-quarter operating profit, the list starts with Samsung Electronics, SK hynix and SK Square. 66 of them also carry a red flag such as losses or dilution; check the signals column.
Op. margin 20%+ 225
| Company | Articles 24h | Latest quarter op. profit | Dividend yield | Signals |
|---|---|---|---|---|
| Samsung Electronics KOSPI · Telecom & broadcasting equipment | 277 | ₩89.49tn +1814% | 1.5% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower Insider buying Treasury share sale Insider selling |
| SK hynix KOSPI · Semiconductors | 144 | ₩60.54tn +557% | 0.4% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Buyback Dividend grower Insider buying |
| SK Square KOSPI · Other financial services | 7 | ₩19.24tn +1273% | – | Profit +50% Op. margin 20%+ |
| GS Holdings KOSPI · Other financial services | 0 | ₩1.72tn +254% | 4.3% | Profit +50% Revenue & profit growth Op. margin 20%+ Dividend grower Major holder adding |
| Samsung Biologics KOSPI · Pharmaceutical ingredients | 3 | ₩586bn +23% | – | Op. margin 20%+ Insider buying Supply contract M&A / stake deal Insider selling |
| LG KOSPI · Other financial services | 3 | ₩533bn +92% | 3.4% | Profit +50% Revenue & profit growth Op. margin 20%+ M&A / stake deal |
| Celltrion KOSPI · Pharmaceutical ingredients | 41 | ₩452bn +86% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Buyback Insider buying Major holder adding Clinical trial filing Insider selling Share pledge |
| KT&G KOSPI · Tobacco | 5 | ₩414bn +18% | 4.1% | Op. margin 20%+ Buyback Cancellation Dividend grower Insider buying Litigation |
| Krafton KOSPI · Software publishing | 44 | ₩411bn +67% | 0.9% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Misto Holdings KOSPI · Wholesale trade | 0 | ₩295bn +62% | 3.8% | Profit +50% Revenue & profit growth Op. margin 20%+ Dividend grower M&A / stake deal Share pledge |
| HD Hyundai Electric KOSPI · Motors, generators & power converters | 0 | ₩287bn +37% | – | Revenue & profit growth Op. margin 20%+ Asset deal Insider selling |
| Hyosung KOSPI · Other financial services | 5 | ₩232bn +134% | 4.2% | Profit +50% Revenue & profit growth Op. margin 20%+ Supply contract Share pledge |
| KakaoBank KOSPI · Banks | 37 | ₩194bn +14% | 2.0% | Op. margin 20%+ Dividend grower |
| Apr KOSPI · Specialty chemicals | 40 | ₩191bn +125% | 1.7% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Insider buying News surge M&A / stake deal |
| Samyang Foods KOSPI · Food products | 0 | ₩176bn +47% | 0.4% | Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower Insider selling Share pledge |
| NC KOSPI · Software publishing | 9 | ₩174bn +1053% | 0.5% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Insider buying Dividend cut |
| HanaMicron KOSDAQ · Semiconductors | 0 | ₩142bn +371% | 0.3% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ New 5% holder Major holder adding Insider selling Share pledge |
| Hanmi Pharm KOSPI · Pharmaceuticals | 44 | ₩131bn +117% | 0.8% | Profit +50% Revenue & profit growth Op. margin 20%+ Dividend grower Insider buying Clinical trial filing Share pledge |
| HANMI Semiconductor KOSPI · Special-purpose machinery | 20 | ₩130bn +51% | 0.4% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower Insider buying Supply contract |
| Jeju Semiconductor KOSDAQ · Semiconductors | 2 | ₩122bn +2709% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ New 5% holder Major holder adding Treasury share sale |
| DB HiTek KOSPI · Semiconductors | 0 | ₩105bn +43% | 0.9% | Revenue & profit growth Op. margin 20%+ New 5% holder Major holder adding Dividend cut |
| Hankook & Company KOSPI · Other financial services | 0 | ₩100bn +36% | 3.9% | Op. margin 20%+ Dividend grower |
| SK biopharmaceuticals KOSPI · Research & development | 1 | ₩97.1bn +57% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Daehan Shipbuilding KOSPI · Shipbuilding | 1 | ₩95.2bn +52% | 0.3% | Profit +50% Revenue & profit growth Op. margin 20%+ |
| F&F KOSPI · Apparel & fur | 5 | ₩86.5bn +3% | 3.6% | Op. margin 20%+ |
| Kyung Dong Navien KOSPI · Electrical equipment | 1 | ₩84.3bn +65% | – | Profit +50% Op. margin 20%+ |
| Silicon 2 KOSDAQ · Wholesale trade | 1 | ₩83.0bn +59% | 0.8% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Buyback Asset deal |
| Isupetasys KOSPI · Electronic components | 0 | ₩77.1bn +83% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Insider buying Insider selling |
| Woori Technology Investment KOSDAQ · Other financial services | 0 | ₩75.8bn -54% | – | Op. margin 20%+ Share pledge |
| LEENO Industrial KOSDAQ · Electronic components | 1 | ₩73.5bn +38% | 1.3% | Revenue & profit growth Op. margin 20%+ New 5% holder Major holder adding Dividend cut |
| DoubleUGames KOSPI · Software publishing | 0 | ₩70.1bn +29% | 2.2% | Revenue & profit growth Op. margin 20%+ |
| PearlAbyss KOSDAQ · Software publishing | 29 | ₩67.6bn | – | Turnaround Revenue +30% Op. margin 20%+ |
| PharmaResearch KOSDAQ · Medical supplies | 2 | ₩66.5bn +19% | 0.9% | Revenue & profit growth Op. margin 20%+ Dividend grower Major holder adding |
| Korea Line KOSPI · Shipping | 0 | ₩62.9bn +90% | – | Profit +50% Op. margin 20%+ New 5% holder Supply contract Share pledge |
| Sanil Electric KOSPI · Motors, generators & power converters | 0 | ₩62.0bn +34% | – | Revenue & profit growth Op. margin 20%+ Supply contract |
| LX Holdings KOSPI · Other financial services | 1 | ₩60.3bn +42% | 3.4% | Revenue +30% Revenue & profit growth Op. margin 20%+ Major holder adding Asset deal |
| Hugel KOSDAQ · Pharmaceutical ingredients | 1 | ₩56.0bn -1% | – | Op. margin 20%+ Insider buying |
| JW Holdings KOSPI · Other financial services | 0 | ₩53.8bn +31% | 5.6% | Revenue & profit growth Op. margin 20%+ High dividend Dividend grower Major holder adding M&A / stake deal |
| Tse KOSDAQ · Medical, precision & optical instruments | 2 | ₩52.5bn +255% | 0.8% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Insider selling |
| Lotte Tour Development KOSPI · Business support services | 0 | ₩51.9bn +57% | – | Profit +50% Revenue & profit growth Op. margin 20%+ Major holder adding Insider selling Share pledge |
| Hankuk Carbon KOSPI · Fabricated metal products | 0 | ₩50.4bn +59% | 1.0% | Profit +50% Op. margin 20%+ Dividend grower Share pledge |
| PSK KOSDAQ · Special-purpose machinery | 1 | ₩50.3bn +144% | 1.8% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower New 5% holder Major holder adding Asset deal |
| Hansol Chemical KOSPI · Basic chemicals | 0 | ₩49.8bn +2% | 1.6% | Op. margin 20%+ Insider selling Share pledge |
| Yg-1 KOSDAQ · Fabricated metal products | 0 | ₩47.7bn +207% | 3.4% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Control change Share pledge |
| d'Alba Global KOSPI · Specialty chemicals | 0 | ₩47.2bn +62% | 1.9% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Buyback Cancellation Dividend grower Share pledge |
| Classys KOSDAQ · Medical devices | 1 | ₩43.9bn +2% | 1.9% | Op. margin 20%+ Dividend grower |
| Poongsan Holdings KOSPI · Other financial services | 0 | ₩41.3bn +39% | 4.0% | Revenue +30% Revenue & profit growth Op. margin 20%+ Major holder adding |
| 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 · Medical, precision & optical instruments | 0 | ₩39.6bn +223% | 1.2% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ New 5% holder Major holder adding Supply contract Share pledge |
| EO Technics KOSDAQ · Special-purpose machinery | 0 | ₩39.1bn +51% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ New 5% holder Major holder adding Dividend cut |
| Oscotec KOSDAQ · Pharmaceuticals | 0 | ₩38.7bn | – | Turnaround Revenue +30% Op. margin 20%+ Stake purpose change Litigation Share pledge |
| Miwon Specialty Chemical KOSPI · Basic chemicals | 0 | ₩37.1bn +93% | 2.2% | Profit +50% Revenue & profit growth Op. margin 20%+ Buyback Dividend grower |
| HD Hyundai Energy Solutions KOSPI · Semiconductors | 10 | ₩36.1bn +140% | – | Profit +50% Revenue & profit growth Op. margin 20%+ Major holder adding |
| Alteogen KOSDAQ · Medical & pharmaceutical R&D | 16 | ₩34.2bn | 0.1% | Turnaround Revenue +30% Op. margin 20%+ M&A / stake deal Private placement Dilution risk |
| NICE Information Service KOSPI · Information services | 0 | ₩32.9bn +19% | 3.1% | Op. margin 20%+ Dividend grower Major holder adding M&A / stake deal |
| i-Scream Media KOSDAQ · Software publishing | 0 | ₩32.3bn +34% | 6.0% | Revenue & profit growth Op. margin 20%+ High dividend Insider buying Share pledge |
| KSS Line KOSPI · Shipping | 0 | ₩32.0bn +45% | 4.8% | Revenue & profit growth Op. margin 20%+ Buyback Dividend grower Insider buying Supply contract |
| HD-Hyundai Marine Engine KOSPI · General-purpose machinery | 15 | ₩31.3bn +79% | – | Profit +50% Revenue & profit growth Op. margin 20%+ Supply contract |
| Korea Asset IN Trust KOSPI · Financial services | 0 | ₩31.0bn +274% | 5.7% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ High dividend Litigation |
| HPSP KOSDAQ · Special-purpose machinery | 1 | ₩28.3bn -1% | 1.9% | Op. margin 20%+ New 5% holder Major holder adding Treasury share sale Insider selling Dividend cut |
| Shift UP KOSPI · Software publishing | 0 | ₩28.1bn -59% | – | Op. margin 20%+ |
| Yas KOSDAQ · Special-purpose machinery | 0 | ₩28.0bn | – | Turnaround Op. margin 20%+ Supply contract Share pledge |
| Myungin Pharm KOSPI · Pharmaceuticals | 0 | ₩27.6bn +10% | 2.1% | Op. margin 20%+ Dividend grower |
| Tokai Carbon Korea KOSDAQ · Non-metallic mineral products | 0 | ₩26.8bn +38% | 1.0% | Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower New 5% holder Asset deal |
| Tes KOSDAQ · Special-purpose machinery | 0 | ₩26.0bn +28% | 2.1% | Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower |
| Hana Materials KOSDAQ · Semiconductors | 0 | ₩26.0bn +206% | 0.7% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower Control change Share pledge |
| Shinhan Alpha REIT KOSPI · Real estate | 0 | ₩25.3bn -8% | 3.0% | Op. margin 20%+ Insider buying Dividend cut |
| KX Innovation KOSDAQ · Broadcasting | 0 | ₩25.2bn +38% | – | Revenue & profit growth Op. margin 20%+ M&A / stake deal Dividend cut |
| T&L KOSDAQ · Medical supplies | 0 | ₩25.0bn +150% | 3.1% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower |
| ValueAddedTechnology KOSDAQ · Medical devices | 0 | ₩24.5bn +45% | – | Op. margin 20%+ |
| Miwon Chemicals KOSPI · Specialty chemicals | 0 | ₩24.3bn +195% | 4.8% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower Insider buying Major holder adding Asset deal Insider selling |
| Kctech KOSPI · Medical, precision & optical instruments | 0 | ₩23.5bn +51% | 0.9% | Profit +50% Revenue & profit growth Op. margin 20%+ Dividend grower |
| Protec KOSDAQ · Special-purpose machinery | 1 | ₩23.1bn +135% | 1.2% | Profit +50% Revenue & profit growth Op. margin 20%+ |
| PI Advanced Materials KOSPI · Rubber & plastics | 0 | ₩23.0bn +42% | 1.7% | Op. margin 20%+ |
| Mirae Asset Venture Investment KOSDAQ · Other financial services | 0 | ₩22.4bn +403% | – | Profit +50% Op. margin 20%+ Dividend cut |
| Kona I KOSDAQ · Software publishing | 0 | ₩21.4bn +24% | – | Revenue & profit growth Op. margin 20%+ Insider buying M&A / stake deal Bonus issue |
| ISC KOSDAQ · Wholesale trade | 4 | ₩21.3bn +55% | 0.8% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower New 5% holder Major holder adding M&A / stake deal |
| Korea Ratings KOSDAQ · Business support services | 0 | ₩20.9bn +0% | 8.2% | Op. margin 20%+ High dividend |
| Sejin Heavy Industries KOSPI · Shipbuilding | 0 | ₩20.4bn +132% | 1.3% | Profit +50% Op. margin 20%+ |
| VM KOSDAQ · Special-purpose machinery | 0 | ₩20.1bn +353% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ |
| Vitzrocell KOSDAQ · Batteries | 0 | ₩18.8bn +16% | 1.4% | Revenue +30% Revenue & profit growth Op. margin 20%+ New 5% holder Major holder adding Dividend cut |
| Seobu T&D KOSDAQ · Hotels & lodging | 0 | ₩18.3bn +63% | 0.8% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Insider buying Asset deal Control change Insider selling Share pledge |
| Sena Technologies KOSDAQ · Telecom & broadcasting equipment | 0 | ₩18.0bn +128% | – | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Buyback Cancellation |
| InBody KOSDAQ · Medical devices | 8 | ₩17.7bn +71% | 1.7% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower Insider buying Major holder adding Share pledge |
| Yunsung F&C KOSDAQ · Special-purpose machinery | 0 | ₩17.1bn | 0.3% | Turnaround Revenue +30% Op. margin 20%+ Supply contract Dividend cut |
| Woorison F&G KOSDAQ · Food products | 0 | ₩17.0bn +3% | 8.6% | Op. margin 20%+ High dividend Dividend grower |
| Hy-lok KOSDAQ · Steel | 0 | ₩17.0bn +3% | 3.9% | Op. margin 20%+ Dividend grower |
| Hanjinkal KOSPI · Other financial services | 0 | ₩16.8bn +70% | 0.2% | Profit +50% Op. margin 20%+ M&A / stake deal |
| Worldexindustry&trading KOSDAQ · Electronic components | 0 | ₩16.5bn +97% | 0.5% | Profit +50% Revenue & profit growth Op. margin 20%+ |
| Fadu KOSDAQ · Semiconductors | 1 | ₩16.2bn | – | Turnaround Revenue +30% Op. margin 20%+ Insider buying Supply contract |
| Solborn KOSDAQ · Professional services | 0 | ₩16.0bn -26% | – | Op. margin 20%+ |
| Cmtx KOSDAQ · Electronic components | 0 | ₩15.6bn -41% | – | Op. margin 20%+ |
| Digital Daesung KOSDAQ · Education | 0 | ₩15.1bn +50% | 6.0% | Revenue & profit growth Op. margin 20%+ Buyback High dividend Dividend grower Major holder adding |
| DIT KOSDAQ · Special-purpose machinery | 0 | ₩14.1bn +66% | 2.8% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower Insider buying Treasury share sale |
| Micro Contact Solution KOSDAQ · Electronic components | 0 | ₩13.9bn +277% | 0.6% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Insider buying |
| GwangjuShinsegae KOSPI · Department stores & general retail | 0 | ₩13.9bn +18% | 7.1% | Op. margin 20%+ High dividend |
| PSK Holdings KOSDAQ · Special-purpose machinery | 0 | ₩13.8bn +63% | 2.3% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Dividend grower |
| S&S Tech KOSDAQ · Electronic components | 0 | ₩13.6bn +2% | 0.4% | Op. margin 20%+ |
| JVM KOSDAQ · General-purpose machinery | 26 | ₩13.5bn +24% | 2.5% | Op. margin 20%+ Dividend grower Insider selling |
| Pharmicell KOSPI · Electronic components | 0 | ₩13.2bn +62% | 0.3% | Profit +50% Revenue +30% Revenue & profit growth Op. margin 20%+ Supply contract Share pledge |
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.