High operating margin companies on KOSPI and KOSDAQ

Operating margin (영업이익률) is the share of revenue left from the core business. Normal levels differ a lot by industry.

Who gets on this list

Latest fiscal year, revenue of ₩10B or more, operating profit reported. Highest first, up to 100 per market.

Formula: Operating margin = operating profit ÷ revenue × 100

The order is the size of the number. It is not a quality ranking.

KOSPI High operating margin Korean companies

765 companies match. Showing 100.

KOSPI High operating margin Korean companies
CompanyFiscal yearOp. marginROEDebt/equityProfit streak
SK Square Co., Ltd.FY2025 consolidated623.3%31.5%9.0%2 yr
LX Holdings Corp.FY2025 consolidated323.1%6.8%17.9%5 yr
SK REIT Co., Ltd.FY2025 consolidated91.7%0.5%176.8%5 yr
IGIS RESIDENCE REIT Co., Ltd.FY2025 consolidated86.7%1.9%29.9%5 yr
E KOCREF CR-REITFY2025 consolidated78.3%1.6%209.3%5 yr
IGIS Value Plus REIT Co., Ltd.FY2025 consolidated76.3%1.6%52.4%4 yr
JR GLOBAL REITFY2025 consolidated75.6%0.7%125.3%5 yr
Shinhan Seobu T&D REIT Co., Ltd.FY2025 consolidated74.0%0.8%213.2%5 yr
K-TOP REITS CO.,LTD.FY2025 consolidated70.4%6.1%103.2%5 yr
NH All-One REIT Co., Ltd.FY2025 consolidated67.3%0.4%386.3%5 yr
LOTTE REIT Co., Ltd.FY2025 separate65.3%0.9%127.0%5 yr
KORAMCO LIFE INFRA REIT CO.,LTDFY2025 separate62.7%0.7%164.3%5 yr
Shinhan Alpha REIT Co,. Ltd.FY2025 consolidated61.7%0.7%253.7%5 yr
SHIFT UP Corporation.FY2025 consolidated61.6%20.8%17.6%2 yr
SamsungFN REIT Co., Ltd.FY2025 separate60.5%0.2%112.1%3 yr
Hanwha REIT Co., Ltd.FY2025 separate57.3%0.8%121.3%3 yr
SK hynix Inc.FY2025 consolidated48.6%35.6%45.9%2 yr
SAMSUNG BIOLOGICS CO.,LTD.FY2025 consolidated45.4%23.9%48.4%5 yr
HANMI Semiconductor CO., LTD.FY2025 consolidated43.6%31.0%17.8%5 yr
ESR Kendall Square REIT Co., Ltd.FY2025 consolidated43.4%-0.2%139.4%5 yr
SANIL ELECTRIC CO., LTDFY2025 consolidated35.6%25.4%16.5%2 yr
DoubleUGames Co., Ltd.FY2025 consolidated32.2%10.9%11.8%5 yr
MYUNGIN PHARM.CO., LTDFY2025 consolidated32.2%10.3%6.0%1 yr
KRAFTON, Inc.FY2025 consolidated31.7%10.2%31.3%5 yr
Pharmicell Co.,Ltd.FY2025 separate30.1%32.5%26.9%5 yr
SK biopharmaceuticals Co., Ltd.FY2025 consolidated28.9%30.7%45.0%2 yr
GwangjuShinsegae. Co.,Ltd.FY2025 separate28.5%5.1%46.0%5 yr
HANKOOK & COMPANY CO., LTD.FY2025 consolidated28.2%7.3%10.0%5 yr
Celltrion, Inc.FY2025 consolidated28.1%5.9%28.7%5 yr
MiraeING.Co.,Ltd.FY2025 separate26.9%-5.3%45.0%5 yr
HD HYUNDAI ELECTRIC CO.,LTDFY2025 consolidated24.4%36.0%134.6%5 yr
F&F CO.,LtdFY2025 consolidated24.2%21.3%41.1%5 yr
DAEHAN SHIPBUILDING Co., Ltd.FY2025 consolidated23.9%22.8%40.8%1 yr
APR Co., Ltd.FY2025 consolidated23.9%65.0%73.1%5 yr
F&F Holdings Co., Ltd.FY2025 consolidated22.5%10.1%19.2%5 yr
Samyang Foods Inc.FY2025 consolidated22.3%30.6%72.7%5 yr
LOTTE TOUR DEVELOPMENT CO.,LTDFY2025 consolidated21.9%7.5%488.7%2 yr
KT&G CorporationFY2025 consolidated20.4%11.8%52.0%5 yr
DB HiTek Co.,LTDFY2025 consolidated19.8%11.3%33.4%5 yr
KSS LINE LTD.FY2025 consolidated19.7%6.7%255.3%5 yr
d'Alba Global Co., Ltd.FY2025 consolidated19.5%39.8%28.6%2 yr
HD-Hyundai Marine Engine Co., Ltd.FY2025 consolidated18.9%33.8%66.6%4 yr
ISUPETASYS CO.,LTDFY2025 consolidated18.8%21.2%70.5%5 yr
DENTIUMFY2025 consolidated18.5%2.9%66.2%5 yr
JUNJIN CONSTRUCTION & ROBOT CO., LTD.FY2024 consolidated18.5%20.3%42.0%1 yr
SNTEnergy Co.,Ltd.FY2025 consolidated18.4%23.1%61.7%5 yr
NAVER CorporationFY2025 consolidated18.3%6.3%41.9%5 yr
SEJIN HEAVY INDUSTRIES CO., LTD.FY2025 consolidated18.2%20.0%112.9%5 yr
MIRAE CORPORATIONFY2025 consolidated18.0%8.2%24.3%2 yr
HANKOOK COSMETICS MANUFACTURING CO.,LTDFY2025 separate17.8%26.1%89.8%4 yr
SUNNY ELECTRONICS CO.,LTDFY2025 separate17.8%4.3%1.5%5 yr
COWAY Co., Ltd.FY2025 consolidated17.7%17.1%93.7%5 yr
Hansol Chemical Co., LtdFY2025 consolidated17.7%12.6%35.9%5 yr
HD Hyundai Marine Solution Co., LtdFY2025 consolidated17.7%32.7%54.3%2 yr
NICE Information Service Co., Ltd.FY2025 consolidated17.3%16.6%37.7%5 yr
JW HOLDINGS CORPORATIONFY2025 consolidated17.3%19.4%107.1%5 yr
Hyundai-Rotem Co.FY2025 consolidated17.2%25.3%206.4%5 yr
KOREA UNITED PHARM INCFY2025 separate17.2%8.4%14.3%5 yr
ORION CORP.FY2025 consolidated16.8%10.0%17.5%5 yr
Hanmi Pharm. Co., Ltd.FY2025 consolidated16.7%13.2%50.2%5 yr
PI Advanced Materials Co., Ltd.FY2025 separate16.3%8.6%30.9%2 yr
BYC CO.,LTDFY2025 consolidated16.3%3.5%37.9%5 yr
KOREA LINE CORPORATIONFY2025 consolidated16.2%7.2%70.2%5 yr
GS P&L Co., Ltd.FY2025 consolidated16.2%2.4%95.3%1 yr
HYOSUNG CORPORATIONFY2025 consolidated16.2%14.8%88.5%5 yr
YOUNGBO CHEMICAL CO.,LTDFY2025 consolidated16.1%8.8%10.2%5 yr
Kangwon Land, Inc.FY2025 consolidated15.9%8.0%22.2%4 yr
KCTECH CO., LTDFY2025 consolidated15.7%10.1%13.2%5 yr
POONGSAN HOLDINGS CORPORATIONFY2025 consolidated15.4%6.3%15.5%5 yr
HANKOOK SHELL OIL CO.,LTDFY2025 separate15.3%34.4%42.7%5 yr
CUCKOO HOMESYS CO.,LTDFY2025 consolidated15.1%10.6%24.8%5 yr
CHOSUN WELDING POHANG Co., LtdFY2025 separate15.0%5.7%6.0%5 yr
Youngone Holdings Co., LtdFY2025 consolidated15.0%11.5%32.3%5 yr
CS Holdings Co.,Ltd.FY2025 consolidated15.0%5.3%8.0%5 yr
HANKUK CARBON CO.,LTDFY2025 consolidated14.4%17.5%79.8%5 yr
ORION Holdings Corp.FY2025 consolidated14.4%6.6%19.9%5 yr
DN AUTOMOTIVE CORPORATIONFY2025 consolidated14.4%13.3%115.4%5 yr
BioNote, Inc.FY2025 consolidated14.1%-5.8%3.0%2 yr
MNC Solution Co., LtdFY2025 separate13.9%23.4%107.0%2 yr
KOREA ELECTRIC POWER CORPORATIONFY2025 consolidated13.8%17.6%416.9%2 yr
SK eternix Co., Ltd.FY2025 consolidated13.7%11.3%382.4%2 yr
YG PLUS, INC.FY2025 consolidated13.7%12.2%40.7%1 yr
PARADISE.Co.,Ltd.FY2025 consolidated13.6%6.5%84.4%4 yr
SNT Holdings CO.,LTDFY2025 consolidated13.4%9.2%36.3%5 yr
HMM CO.,LTDFY2025 consolidated13.4%7.1%26.3%5 yr
KOREA DISTRICT HEATING CORPORATIONFY2025 consolidated13.2%14.7%257.6%3 yr
SAMSUNG ELECTRONICS CO,.LTDFY2025 consolidated13.1%10.4%29.9%5 yr
HD KOREA SHIPBUILDING & OFFSHORE ENGINEERING CO., LTD.FY2025 consolidated13.0%17.3%133.9%3 yr
BGF CO., LTD.FY2025 consolidated13.0%2.8%18.5%5 yr
JW LIFESCIENCE CORPORATIONFY2025 consolidated12.9%13.0%44.3%5 yr
SOOSAN INDUSTRIES CO., LTD.FY2025 consolidated12.8%8.8%21.5%4 yr
Youngone CorporationFY2025 consolidated12.7%10.4%39.3%5 yr
DAEWOONG CO.,LTDFY2025 consolidated12.7%12.9%82.9%5 yr
LG Corp.FY2025 consolidated12.6%3.3%12.0%5 yr
IT'S HANBUL CO., LTD.FY2025 consolidated12.5%6.4%5.8%5 yr
DAEWOONG PHARMAFY2025 consolidated12.5%17.0%108.2%5 yr
Hyosung Heavy Industries CorporationFY2025 consolidated12.5%20.2%190.3%5 yr
Grand Korea Leisure Co.,LtdFY2025 consolidated12.4%10.7%47.5%3 yr
Netmarble CorporationFY2025 consolidated12.4%4.2%47.4%2 yr
Cuckoo Holdings Co.,LtdFY2025 consolidated12.4%11.0%20.5%5 yr

KOSDAQ High operating margin Korean companies

1,543 companies match. Showing 100.

KOSDAQ High operating margin Korean companies
CompanyFiscal yearOp. marginROEDebt/equityProfit streak
Stonebridge Ventures Inc.FY2025 separate52.7%11.8%9.6%5 yr
OSCOTECInc.FY2025 consolidated52.2%29.1%23.0%1 yr
HPSP Co., Ltd.FY2025 separate52.0%23.6%19.9%4 yr
CLASSYS Inc.FY2025 consolidated50.7%23.9%27.7%5 yr
Alteogen Inc.FY2025 consolidated49.5%31.9%53.8%2 yr
DSC Investment Inc.FY2025 consolidated49.5%13.6%36.5%3 yr
LEENO Industrial IncFY2025 separate47.5%20.8%8.3%5 yr
Hugel, Inc.FY2025 consolidated47.2%15.0%9.9%5 yr
SemyungElectricMachineryFY2025 separate45.8%14.2%18.5%5 yr
Atinum Investment Co., LtdFY2025 separate45.3%12.3%10.1%5 yr
Aimed Bio Inc.FY2025 consolidated43.9%2.6%3.3%1 yr
ACTOZ SOFT CO., LTD.FY2025 consolidated40.9%12.3%47.6%5 yr
EuBiologics Co., Ltd.FY2025 separate40.7%23.5%37.0%3 yr
PharmaResearch Co., Ltd.FY2025 consolidated40.0%23.2%44.2%5 yr
DEAR U Co.,Ltd.FY2025 consolidated37.4%8.9%15.8%5 yr
SunBio, Inc.FY2025 separate36.8%9.7%110.2%1 yr
LB Investment Inc.FY2025 consolidated36.6%9.8%6.9%3 yr
PSK HOLDINGS INC.FY2025 consolidated35.3%18.1%15.5%5 yr
YW COMPANY LIMITEDFY2025 consolidated34.9%6.0%15.8%5 yr
Synapsoft Corp.FY2025 separate34.7%8.2%3.4%2 yr
TOTAL SOFT BANK LTD.FY2025 separate34.0%23.3%50.4%5 yr
SEERS Co., Ltd.FY2025 consolidated33.9%40.5%36.8%1 yr
WON TECH CO.,Ltd.FY2025 consolidated33.0%22.4%38.0%4 yr
N2TECH CO.,LTDFY2025 consolidated32.8%14.8%16.7%1 yr
BIO-FD&C CO.,LTD.FY2025 separate32.6%9.6%5.2%5 yr
CMTX Co.,Ltd.FY2025 consolidated32.3%-11.8%51.0%1 yr
SECUVE Co., Ltd.FY2025 separate32.1%9.5%6.7%5 yr
i-Scream Media CO., LTD.FY2025 separate31.5%24.1%30.5%2 yr
ilShinbiobase Co., Ltd.FY2025 separate31.3%7.4%5.8%5 yr
Korea Ratings CorporationFY2025 consolidated31.3%20.1%28.4%5 yr
VenueG Co.,Ltd.FY2025 consolidated31.2%22.7%63.1%5 yr
e-Credible Co., Ltd.FY2025 consolidated31.1%30.1%23.4%5 yr
MITECH CO.,LTD.FY2025 consolidated30.8%n/a12.6%5 yr
REFINE Co., Ltd.FY2025 separate30.8%4.1%5.3%5 yr
FnGuide Inc.FY2025 consolidated30.1%14.6%28.3%5 yr
CHERYONG ELECTRIC CO.,LTD.FY2025 separate29.9%24.5%11.5%5 yr
KONA I CO., LTD.FY2025 consolidated28.8%28.9%116.8%5 yr
VITZROCELL Co.,Ltd.FY2025 consolidated28.5%17.2%12.2%5 yr
Seobu T&D Co.,LtdFY2025 consolidated28.3%8.4%134.7%4 yr
T&L Co., LTD.FY2025 consolidated28.2%18.9%7.9%5 yr
CAREGEN CO.,LTD.FY2025 consolidated28.0%9.5%8.8%5 yr
CHERYONG INDUSTRIAL CO.,LTD.FY2025 separate27.9%13.3%11.4%5 yr
TOKAI CARBON KOREA CO., LTDFY2025 separate27.8%13.5%9.3%5 yr
HY-LOK CORPORATIONFY2025 consolidated27.5%11.1%8.5%5 yr
ASTERASYS Co., Ltd.FY2025 consolidated27.4%19.7%11.7%2 yr
ISC Co., LTD.FY2025 consolidated27.3%10.5%15.9%5 yr
coocon CorporationFY2025 separate27.2%12.6%83.9%5 yr
TRUEN Co., LtdFY2025 separate27.0%11.1%4.6%3 yr
SOOP CO., LTD.FY2025 consolidated26.8%20.6%75.8%5 yr
KnJ Co.,Ltd.FY2025 consolidated26.3%26.3%137.2%5 yr
Messe eSang Co.,LtdFY2025 consolidated26.1%19.5%21.4%3 yr
Parataxis Ethereum, Inc.FY2025 separate25.9%12.7%28.9%3 yr
Humedix Co., Ltd.FY2025 separate24.9%17.3%8.0%5 yr
KOMELON CORPORATIONFY2025 consolidated24.9%8.9%4.1%5 yr
PROTIA INC.FY2025 separate24.6%14.6%7.6%3 yr
T3 Entertainment Inc.FY2025 consolidated24.5%18.6%12.9%4 yr
Namhwa Industrial Co.,Ltd.FY2025 separate24.4%3.5%7.1%5 yr
SGA Solutions Co.,Ltd.FY2025 consolidated24.1%32.1%186.9%1 yr
Suprema Inc.FY2025 consolidated23.8%11.9%10.6%5 yr
FIBERPRO, Inc.FY2025 consolidated23.3%20.3%32.6%4 yr
GigaVis Co., Ltd.FY2025 consolidated23.1%7.3%13.4%1 yr
Incross Co.,Ltd.FY2025 consolidated22.8%9.2%126.7%5 yr
Dozn Inc.FY2025 consolidated22.7%14.6%162.4%1 yr
LK CHEM Co., Ltd.FY2025 consolidated22.6%7.3%11.0%2 yr
Wonbiogen Co.,Ltd.FY2025 consolidated22.5%15.2%11.7%5 yr
INFOvine co., Ltd.FY2025 consolidated22.5%7.4%9.8%5 yr
CU MEDICAL SYSTEMS Inc.FY2025 consolidated22.4%1.4%67.0%5 yr
Sandoll, Inc.FY2025 consolidated22.3%6.1%26.3%4 yr
Y-ENTECCO.,LTD.FY2025 consolidated22.3%8.8%44.3%5 yr
Sukgyung AT Co., Ltd.FY2025 consolidated22.2%8.6%23.2%5 yr
HANTECH LTD.FY2025 consolidated22.2%18.9%41.4%1 yr
Dongbang Ship Machinery Co., LtdFY2025 separate22.2%15.9%34.3%5 yr
IDP Corp., Ltd.FY2025 consolidated22.2%14.9%7.4%5 yr
eSANGNetworksCo.,LtdFY2025 consolidated22.1%12.0%17.5%5 yr
KL-Net Corp.FY2025 consolidated22.0%15.0%13.6%5 yr
NeopharmCO.,LTD.FY2025 consolidated21.8%14.2%11.5%5 yr
SUN KWANG Co.,LtdFY2025 consolidated21.7%9.1%59.2%5 yr
Seoho Electric Co.,Ltd.FY2025 consolidated21.7%24.9%24.6%5 yr
SUNIC SYSTEM Co., Ltd.FY2025 consolidated21.6%67.1%154.2%2 yr
WINS Technet Co., LtdFY2025 consolidated21.5%9.9%13.4%5 yr
IL SEUNG Co., LTDFY2025 consolidated21.4%15.1%42.1%5 yr
DIT Corp.FY2025 consolidated21.4%12.8%12.4%4 yr
EO Technics CO.,LTDFY2025 consolidated21.2%8.4%13.1%5 yr
KOSES Co.,LtdFY2025 consolidated21.1%17.8%24.6%1 yr
METABIOMED.CO.,LTDFY2025 consolidated20.8%8.6%49.4%5 yr
S&S TECH CORPORATIONFY2025 consolidated20.7%19.1%29.2%5 yr
The Pinkfong Company, Inc.FY2025 consolidated20.6%9.8%10.7%2 yr
DEVICE CO.,LtdFY2025 consolidated20.6%10.5%35.5%5 yr
Park Systems Corp.FY2025 consolidated20.5%15.3%55.4%5 yr
SOLBORN, Inc.FY2025 consolidated20.4%11.1%20.1%3 yr
D&C MEDIA CO.,LTD.FY2025 consolidated20.3%8.3%22.8%5 yr
PROTEC Co., Ltd.FY2025 consolidated20.1%10.0%25.1%5 yr
WORLDEXINDUSTRY&TRADINGCO.,LTDFY2025 consolidated20.1%11.8%24.0%5 yr
SEWOONMEDICAL CO,. LTD.FY2025 consolidated20.0%7.9%6.1%5 yr
ASSEMS INC.FY2025 consolidated19.9%12.1%55.4%5 yr
Ubiquoss Inc.FY2025 consolidated19.8%12.3%14.1%5 yr
Ubiquoss Holdings Inc.FY2025 consolidated19.7%8.8%8.7%5 yr
KOREA INFORMATION CERTIFICATE AUTHORITY, INCORPORATEDFY2025 consolidated19.5%11.2%69.0%5 yr
OSTEONIC Co., Ltd.FY2025 consolidated19.5%11.1%48.6%5 yr
DONGAELTEKCo.,LtdFY2025 consolidated19.4%39.8%107.8%5 yr
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Computed from the Financial Services Commission's company outline and summary statements (data.go.kr). Data as of 2026-09-24.

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