Electronic components, computers and communications equipment
293 companies listed in Korea file under this classification. Figures below are each company's most recent filed year, mostly 2025.
Companies293
Combined revenueKRW 672,489bn
Median revenueKRW 100bn
Largest company's share49.6%
We show the median rather than the average because one company often carries a whole classification. The largest firm's share of combined revenue is there so you can see when that is happening.
All companies, by name
Listed alphabetically, not ranked. We do not order companies by size or call any of them leading, major or top.
| Company | Market | Year | Revenue | Operating profit | Net profit |
|---|---|---|---|---|---|
| 3ALogics. Inc.177900 | KOSDAQ | 2025 | 14 | -3 | -4 |
| ABCO ELECTRONICS CO., LTD.036010 | KOSDAQ | 2025 | 134 | 8 | 10 |
| ABKO CO., LTD.129890 | KOSDAQ | 2025 | 83 | 3 | 6 |
| ABOV Semiconductor Co.,Ltd.102120 | KOSDAQ | 2025 | 244 | 10 | 2 |
| Ace Technologies Corp.088800 | KOSDAQ | 2025 | 178 | -22 | -29 |
| ACTRO CO.,Ltd290740 | KOSDAQ | 2025 | 245 | 7 | 7 |
| ADTechnology Co., Ltd.200710 | KOSDAQ | 2025 | 165 | 3 | 4 |
| AGOS Co., Ltd.175140 | KOSDAQ | 2025 | 55 | -12 | -18 |
| AHA Co.,Ltd102950 | KONEX | 2025 | 79 | -0 | -2 |
| AJINEXTEK Co., Ltd.059120 | KOSDAQ | 2025 | 25 | 1 | 1 |
| Alphachips, Inc.117670 | KOSDAQ | 2025 | 82 | -2 | -1 |
| ALT Co., Ltd.459550 | KOSDAQ | 2025 | 113 | 9 | 5 |
| ALT Co.,Ltd.172670 | KOSDAQ | 2025 | 48 | -7 | -9 |
| AMOGREENTECH Co., Ltd.125210 | KOSDAQ | 2025 | 131 | 9 | 6 |
| Amosense Co., Ltd.357580 | KOSDAQ | 2025 | 122 | 5 | 0 |
| Amotech Co., Ltd.052710 | KOSDAQ | 2025 | 254 | 6 | 8 |
| ANAM ELECTRONICS CO.,LTD008700 | KOSPI | 2025 | 0 | 0 | 0 |
| Anapass, Inc.123860 | KOSDAQ | 2025 | 108 | 20 | 3 |
| APACT Co., Ltd.200470 | KOSDAQ | 2025 | 111 | 5 | 5 |
| Aroot Co., Ltd.096690 | KOSDAQ | 2025 | 51 | -11 | -19 |
| Asia Pacific Satellite lnc.211270 | KOSDAQ | 2025 | 48 | -4 | -3 |
| ASICLAND Co.,Ltd445090 | KOSDAQ | 2025 | 73 | -28 | -27 |
| ATEC MOBILITY Co., Ltd224110 | KOSDAQ | 2025 | 64 | 6 | 1 |
| ATLAS LINK Inc.297570 | KOSDAQ | 2025 | 43 | 7 | 4 |
| ATUM CO., LTD.355690 | KOSDAQ | 2025 | 70 | -7 | -8 |
| AUK CORP017900 | KOSPI | 2025 | 133 | 1 | 4 |
| AUTOMOBILE & PCB015260 | KOSPI | 2025 | 117 | -7 | -14 |
| AVATEC CO.,LTD.149950 | KOSDAQ | 2025 | 81 | 6 | 7 |
| BCnC Co., Ltd.146320 | KOSDAQ | 2025 | 88 | 4 | 1 |
| BG T&A Co.046310 | KOSDAQ | 2025 | 149 | 7 | 7 |
| BHCo.,Ltd.090460 | KOSPI | 2025 | 1,793 | 54 | 41 |
| BioSmart Co., Ltd.038460 | KOSDAQ | 2025 | 483 | 23 | 9 |
| BIXOLONCo.,Ltd093190 | KOSDAQ | 2025 | 133 | 16 | 18 |
| BLUECOM CO.,LTD033560 | KOSDAQ | 2025 | 6 | 1 | 16 |
| CammSys Corp.050110 | KOSDAQ | 2025 | 490 | -11 | -19 |
| CAP Co.,Ltd.198080 | KOSDAQ | 2025 | 295 | 24 | 19 |
| Cellfie Global Co.,Ltd.068940 | KOSDAQ | 2025 | 36 | -3 | -11 |
| Chips&Media, Inc.094360 | KOSDAQ | 2025 | 28 | 7 | 6 |
| CITECH CO.,LTD004920 | KOSPI | 2025 | 41 | 2 | 15 |
| CMTX Co.,Ltd.388210 | KOSDAQ | 2025 | 161 | 52 | -22 |
| CNPLUS Co., Ltd.115530 | KOSDAQ | 2025 | 54 | 0 | -2 |
| CoAsia Corporation045970 | KOSDAQ | 2025 | 375 | -2 | -19 |
| COMMAX Co., Ltd.036690 | KOSDAQ | 2025 | 85 | -14 | -15 |
| COTS Technology Co., Ltd.448710 | KOSDAQ | 2025 | 68 | 8 | 7 |
| COWEAVER Co.,Ltd.056360 | KOSDAQ | 2025 | 63 | 0 | 3 |
| CS CORPORATION065770 | KOSDAQ | 2025 | 24 | -1 | -1 |
| CU TECH CORPORATION376290 | KOSDAQ | 2025 | 217 | 5 | 1 |
| DAEDUCK ELECTRONICS CO.,LTD353200 | KOSPI | 2025 | 1,065 | 49 | 48 |
| DaejooElectronicMaterialsCo.,Ltd.078600 | KOSDAQ | 2025 | 255 | 21 | 21 |
| DAP Co., Ltd066900 | KOSDAQ | 2025 | 543 | — | -65 |
| DASAN Networks, Inc.039560 | KOSDAQ | 2025 | 542 | 38 | 4 |
| Dasan Solueta Co.,Ltd.154040 | KOSDAQ | 2025 | 31 | 2 | 12 |
| DAVOLINK Inc.340360 | KOSDAQ | 2025 | 63 | -2 | -5 |
| DB HiTek Co.,LTD000990 | KOSPI | 2025 | 1,397 | 277 | 253 |
| DERKWOO ELECTRONICS CO.,LTD.263600 | KOSDAQ | 2025 | 177 | 2 | 6 |
| DG-ITX Co., Ltd.099520 | KOSDAQ | 2025 | 25 | -3 | -3 |
| DHAUTOWARE Co., LTD025440 | KOSDAQ | 2025 | 494 | -5 | -23 |
| Digital Graphics Incorporation043360 | KOSDAQ | 2025 | 21 | -1 | -1 |
| DILLI ILLUSTRATE INC.,131180 | KOSDAQ | 2025 | 32 | 1 | 2 |
| DK TECH CO.,LTD290550 | KOSDAQ | 2025 | 426 | 22 | 23 |
| DongilTechnology032960 | KOSDAQ | 2025 | 22 | -0 | 7 |
| DONGWOON ANATECH CO.,LTD.094170 | KOSDAQ | 2025 | 128 | 2 | 1 |
| DOOSAN CO.,LTD000150 | KOSPI | 2025 | 19,784 | 1,063 | 250 |
| DOWOOINSYS Co., LTD.484120 | KOSDAQ | 2025 | 140 | 3 | 0 |
| DREAMTECH CO.,LTD.192650 | KOSPI | 2025 | 1,231 | 31 | 13 |
| DUK SAN NEOLUX CO.,LTD213420 | KOSDAQ | 2025 | 344 | 61 | 54 |
| DUKSANHIMETALCO.,LTD.077360 | KOSDAQ | 2025 | 236 | 3 | -116 |
| Edge Foundry Co.,Ltd105550 | KOSDAQ | 2025 | 36 | -16 | 16 |
| ELCOMTEC CO.,LTD037950 | KOSDAQ | 2025 | 46 | 2 | 2 |
| Elensys Co.,Ltd.264850 | KOSDAQ | 2025 | 70 | 4 | 4 |
| Elentec Co., Ltd054210 | KOSDAQ | 2025 | 753 | 43 | 27 |
| EM-Tech.CO.,LTD.091120 | KOSDAQ | 2025 | 205 | -20 | -12 |
| ESTec Corporation069510 | KOSDAQ | 2025 | 468 | 46 | 42 |
| EV ADVANCED MATERIAL CO., LTD.131400 | KOSDAQ | 2025 | 59 | -3 | -22 |
| EXICURE HITRON INC.019490 | KOSPI | 2025 | 5 | -6 | -35 |
| FADU INC.440110 | KOSDAQ | 2025 | 92 | — | -76 |
| Fidelix Co., Ltd.032580 | KOSDAQ | 2025 | 54 | -2 | -3 |
| FINE DNC CO.,LTD.049120 | KOSDAQ | 2025 | 66 | -4 | -22 |
| Fine M-Tec Co.,Ltd.441270 | KOSDAQ | 2025 | 239 | 2 | -15 |
| FINE SEMITECH Corp.036810 | KOSDAQ | 2025 | 280 | -1 | -14 |
| Finecircuit CO.,LTD.127980 | KOSDAQ | 2025 | 82 | -1 | -4 |
| FINEDIGITAL Inc.038950 | KOSDAQ | 2025 | 63 | -5 | -1 |
| FOCUS AI Co., Ltd.331380 | KOSDAQ | 2025 | 45 | -10 | -10 |
| FRTEKCO.,LTD.073540 | KOSDAQ | 2025 | 25 | 1 | 2 |
| GAONCHIPS CO., LTD.399720 | KOSDAQ | 2025 | 69 | -17 | -14 |
| Genohco, Inc361390 | KOSDAQ | 2025 | 60 | -2 | -2 |
| GIGALANE Co., Ltd.049080 | KOSDAQ | 2025 | 40 | -12 | -12 |
| GO Element Co., Ltd.311320 | KOSDAQ | 2025 | 55 | 4 | 5 |
| Green Resource Co.,Ltd402490 | KOSDAQ | 2025 | 102 | 6 | 11 |
| H&SHigh Tech Corp.044990 | KOSDAQ | 2025 | 82 | 10 | 9 |
| HAESUNG DS Co.,Ltd.195870 | KOSPI | 2025 | 653 | 46 | 24 |
| Hana Materials Inc.166090 | KOSDAQ | 2025 | 273 | 50 | 38 |
| HanaMicronInc.067310 | KOSDAQ | 2025 | 1,534 | 128 | 66 |
| Hansol Technics Co., Ltd004710 | KOSPI | 2025 | 1,252 | 20 | 1 |
| HANWHA SYSTEMS Co., Ltd.272210 | KOSPI | 2025 | 3,664 | 120 | 209 |
| Hanwha Vision CO.,LTD489790 | KOSPI | 2025 | 1,791 | 162 | 43 |
| HanWool Materials Science, Inc.091440 | KOSDAQ | 2025 | 13 | -25 | -37 |
| HANYANG DIGITECH CO.,LTD.078350 | KOSDAQ | 2025 | 651 | 24 | 15 |
| HD HYUNDAI ENERGY SOLUTIONS CO.,LTD.322000 | KOSPI | 2025 | 493 | 41 | 42 |
| HFR, Inc.230240 | KOSDAQ | 2025 | 142 | -2 | -0 |
| HiDeep Inc.365590 | KOSDAQ | 2025 | 2 | — | -15 |
| HLB innoVation Co.,Ltd.024850 | KOSDAQ | 2025 | 32 | -38 | -34 |
| HMNEX Co.,Ltd.036170 | KOSDAQ | 2025 | 32 | 2 | 11 |
| HUNEED TECHNOLOGIES005870 | KOSPI | 2025 | 137 | -12 | -10 |
| HYUNDAI HT CO,LTD.039010 | KOSDAQ | 2025 | 153 | 7 | 11 |
| HYUNWOOINDUSTRIALCO.,LTD092300 | KOSDAQ | 2025 | 237 | 11 | 8 |
| i-Components Co., Ltd059100 | KOSDAQ | 2025 | 35 | 6 | 6 |
| I&C Technology Co., Ltd.052860 | KOSDAQ | 2025 | 37 | 4 | 4 |
| i3system Inc.214430 | KOSDAQ | 2025 | 124 | 16 | 19 |
| iA, Inc.038880 | KOSDAQ | 2025 | — | — | — |
| ICH Co., Ltd.368600 | KOSDAQ | 2025 | 47 | -14 | -25 |
| ICTK Co., Ltd.456010 | KOSDAQ | 2025 | 4 | -9 | -7 |
| IDP Corp., Ltd.332370 | KOSDAQ | 2025 | 49 | 11 | 10 |
| ILJIN DISPLAY CO.,LTD.020760 | KOSPI | 2025 | 58 | -5 | -6 |
| IMAGIS Co., Ltd.115610 | KOSDAQ | 2025 | 13 | -2 | -2 |
| INNO INSTRUMENT INC.215790 | KOSDAQ | 2025 | 44 | -9 | -11 |
| INNOX Advanced Materials Co., Ltd.272290 | KOSDAQ | 2025 | 440 | 82 | 56 |
| INTELLIAN TECHNOLOGIES Inc.189300 | KOSDAQ | 2025 | 320 | 12 | 7 |
| INTELLIGENT DIGITAL INTEGRATED SECURITY CO., LTD.143160 | KOSDAQ | 2025 | 328 | 21 | 23 |
| INTERFLEX CO., LTD.051370 | KOSDAQ | 2025 | 468 | 29 | 33 |
| IntermCorporation017250 | KOSDAQ | 2025 | 60 | 4 | 2 |
| INTOPS CO., LTD.049070 | KOSDAQ | 2025 | 591 | -11 | 8 |
| INZI DISPLAY COMPANY LIMITED037330 | KOSDAQ | 2025 | 722 | 17 | 10 |
| Iron Device Corp.464500 | KOSDAQ | 2025 | 10 | -6 | -5 |
| ISTE Co.,Ltd.212710 | KOSDAQ | 2025 | 32 | -6 | -5 |
| ISUPETASYS CO.,LTD007660 | KOSPI | 2025 | 1,088 | 205 | 160 |
| ITM Semiconductor Co., Ltd084850 | KOSDAQ | 2025 | 603 | -7 | -94 |
| JAHWA ELECTRONICS CO.,LTD033240 | KOSPI | 2025 | 849 | 42 | 47 |
| Jeju Semiconductor Corp.080220 | KOSDAQ | 2025 | 302 | 36 | 39 |
| JMT CO.,Ltd.094970 | KOSDAQ | 2025 | 200 | 13 | 16 |
| JNTC CO.,LTD.204270 | KOSDAQ | 2025 | 186 | -78 | -92 |
| JOONGANG ADVANCED MATERIALS Co., Ltd051980 | KOSDAQ | 2025 | 20 | — | -6 |
| JOOSUNG CORPORATION109070 | KOSPI | 2025 | 85 | 3 | 2 |
| JOOYONTECH CO.,LTD.044380 | KOSPI | 2025 | 63 | -2 | -2 |
| KAON Group Co., Ltd.078890 | KOSDAQ | 2025 | 518 | 13 | 6 |
| KEC CORPORATION092220 | KOSPI | 2025 | 230 | -22 | -27 |
| KEM Tech Corp.106080 | KOSDAQ | 2025 | 8 | -9 | -13 |
| KESPION Co., Ltd.079190 | KOSDAQ | 2025 | 44 | -3 | -5 |
| KH VATEC Co., LTD060720 | KOSDAQ | 2025 | 425 | 32 | 20 |
| Kisan Telecom CO., Ltd.035460 | KOSDAQ | 2025 | 99 | 8 | 6 |
| KMW CO. LTD.032500 | KOSDAQ | 2025 | 98 | -24 | -27 |
| KnJ Co.,Ltd.272110 | KOSDAQ | 2025 | 84 | 22 | 26 |
| KOCOM CO., LTD015710 | KOSDAQ | 2025 | 96 | 3 | 6 |
| KORCHIP CORPORATION126730 | KOSDAQ | 2025 | 38 | 1 | 3 |
| KOREA ADVANCED MATERIALS Co.,Ltd.062970 | KOSDAQ | 2025 | 4 | -3 | -13 |
| KOREA CIRCUIT CO.,LTD007810 | KOSPI | 2025 | 1,510 | 54 | 54 |
| KOREA COMPUTER INC.054040 | KOSDAQ | 2025 | 418 | 23 | 21 |
| Korea Robot Manufacturing Co., Ltd.093640 | KOSDAQ | 2025 | 9 | -10 | -14 |
| KORTEK CORPORATION052330 | KOSDAQ | 2025 | 397 | 38 | 28 |
| KOSTECSYS. CO., LTD.355150 | KOSDAQ | 2025 | 15 | 0 | -1 |
| Kwangmu Co.,Ltd.029480 | KOSDAQ | 2025 | 8 | -4 | -29 |
| KYUNGIN ELECTRONICS CO.,LTD009140 | KOSPI | 2025 | 36 | 1 | 4 |
| LB SEMICON, INC.061970 | KOSDAQ | 2025 | 480 | -40 | -151 |
| LDTInc.096870 | KOSDAQ | 2025 | 11 | 0 | 1 |
| LEENO Industrial Inc058470 | KOSDAQ | 2025 | 373 | 177 | 152 |
| LG Display Co., Ltd.034220 | KOSPI | 2025 | 25,810 | 517 | 304 |
| LG ELECTRONICS INC.066570 | KOSPI | 2025 | 89,201 | 2,478 | 1,220 |
| LG INNOTEK CO., LTD.011070 | KOSPI | 2025 | 21,897 | 665 | 341 |
| LiComm Co., Ltd.388790 | KOSDAQ | 2025 | 18 | 1 | 0 |
| LIG Accuver Co.,Ltd.073490 | KOSDAQ | 2025 | 186 | -1 | -1 |
| LIGHTRON FIBER-OPTIC DEVICES INC.069540 | KOSDAQ | 2025 | 32 | — | -20 |
| Linked Inc.193250 | KOSDAQ | 2025 | 10 | — | -3 |
| LMS Co.,Ltd.073110 | KOSDAQ | 2025 | 70 | -10 | -12 |
| LOTTE ENERGY MATERIALS CORPORATION020150 | KOSPI | 2025 | 678 | — | -167 |
| LS Materials Co.,Ltd.417200 | KOSDAQ | 2025 | 154 | -0 | -1 |
| LUMENS CO., LTD.038060 | KOSDAQ | 2025 | 176 | -5 | -7 |
| LX Semicon Co., Ltd.108320 | KOSPI | 2025 | 1,639 | 109 | 83 |
| M2N Co.,Ltd033310 | KOSDAQ | 2025 | 87 | 3 | -1 |
| MCNEX CO.,LTD097520 | KOSPI | 2025 | 1,279 | 52 | 52 |
| Mdevice Co., Ltd226590 | KOSDAQ | 2025 | 96 | 12 | 11 |
| MECARO.CO.,LTD.241770 | KOSDAQ | 2025 | 95 | 15 | 13 |
| MERCURY CORPORATION100590 | KOSDAQ | 2025 | 124 | -1 | -2 |
| MiCo Ltd.059090 | KOSDAQ | 2025 | 977 | 101 | 75 |
| Micro Contact Solution Co.,Ltd.098120 | KOSDAQ | 2025 | 100 | 18 | 17 |
| MICRO2NANO, INC.424980 | KOSDAQ | 2025 | 22 | -3 | -5 |
| MKElectron033160 | KOSDAQ | 2025 | 1,404 | 14 | 14 |
| MOATECH CO., LTD.033200 | KOSDAQ | 2025 | 32 | -3 | -2 |
| MOBASE Co., Ltd.101330 | KOSDAQ | 2025 | 1,371 | 42 | 21 |
| MOTIVELINK CO.,LTD463480 | KOSDAQ | 2025 | 67 | -2 | -0 |
| N CITRON, INC.101400 | KOSDAQ | 2025 | 34 | -5 | -2 |
| Namuga Co.,Ltd190510 | KOSDAQ | 2025 | 460 | 28 | 25 |
| NANOCMS CO., LTD247660 | KOSDAQ | 2025 | 5 | -2 | -2 |
| NC& Co., Ltd.092600 | KOSDAQ | 2025 | 103 | -17 | 3 |
| NEPES Corporation033640 | KOSDAQ | 2025 | 521 | 24 | 20 |
| NEWFLEXTECHNOLGYCo.,LTD.085670 | KOSDAQ | 2025 | 154 | 9 | 9 |
| Nextchip Co., Ltd.396270 | KOSDAQ | 2025 | 40 | -13 | -16 |
| ODTech080520 | KOSDAQ | 2025 | 38 | -2 | 1 |
| OE Solutions Co., Ltd.138080 | KOSDAQ | 2025 | 57 | -16 | -27 |
| OKins Electronics Co.,Ltd.080580 | KOSDAQ | 2025 | 94 | 11 | 8 |
| ONEUL E&M co.,Ltd192410 | KOSDAQ | 2025 | 17 | -2 | -78 |
| OPTICIS CO., LTD.109080 | KOSDAQ | 2025 | 26 | 5 | 4 |
| OptiCore Inc.380540 | KOSDAQ | 2025 | 22 | -6 | -23 |
| PARTRONCO.,LTD091700 | KOSDAQ | 2025 | 1,350 | 45 | 33 |
| PAVONINE CO., LTD.177830 | KOSDAQ | 2025 | 133 | 3 | -4 |
| Pentastone Electronics, Inc.332570 | KOSDAQ | 2025 | 125 | 4 | 16 |
| Pharmicell Co.,Ltd.005690 | KOSPI | 2025 | 114 | 34 | 40 |
| PHOTON CO., LTD208710 | KOSDAQ | 2025 | 129 | -0 | -6 |
| PIMS Inc.347770 | KOSDAQ | 2025 | 63 | -6 | -8 |
| Piolink, Inc.170790 | KOSDAQ | 2025 | 66 | 5 | 8 |
| Pixelplus. Co., Ltd.087600 | KOSDAQ | 2025 | 43 | -6 | -3 |
| POINT MOBILE Co., Ltd.318020 | KOSDAQ | 2025 | 87 | 3 | 3 |
| POONGWON PRECISION Co.,Ltd.371950 | KOSDAQ | 2025 | 32 | -20 | -24 |
| PRO2000 CO.,LTD.321260 | KOSDAQ | 2025 | 32 | 3 | 4 |
| PULOON Robotics Inc.094940 | KOSDAQ | 2025 | 23 | -1 | -1 |
| Q.S.ICo.,Ltd.066310 | KOSDAQ | 2025 | 23 | 0 | 3 |
| QUALITAS SEMICONDUCTOR CO., LTD.432720 | KOSDAQ | 2025 | 5 | -24 | -23 |
| RANIX INC.317120 | KOSDAQ | 2025 | 7 | -6 | -8 |
| RAONTECH INC.418420 | KOSDAQ | 2025 | 9 | -6 | -7 |
| RF Materials Co., Ltd.327260 | KOSDAQ | 2025 | 64 | 7 | 10 |
| RFHIC CORPORATION218410 | KOSDAQ | 2025 | — | — | — |
| RFsemiTechnologies,Inc.096610 | KOSDAQ | 2025 | 24 | 2 | 2 |
| RFTECH CO., LTD061040 | KOSDAQ | 2025 | 266 | -25 | -30 |
| RN2 Technologies Co., Ltd.148250 | KOSDAQ | 2025 | 19 | -3 | -4 |
| RNT-X CO.,LTD.123010 | KOSDAQ | 2025 | 38 | 0 | -3 |
| RS AUTOMATION CO.,LTD.140670 | KOSDAQ | 2025 | 67 | -4 | -4 |
| RYUK-IL C&S., Ltd.191410 | KOSDAQ | 2025 | 45 | -2 | 2 |
| S Connect Co., LTD096630 | KOSDAQ | 2025 | 279 | 13 | 36 |
| S&KPOLYTECCO.,LTD.091340 | KOSDAQ | 2025 | 310 | 16 | 11 |
| S&S TECH CORPORATION101490 | KOSDAQ | 2025 | 244 | 50 | 58 |
| SAMJI ELECTRONICS CO., LTD.037460 | KOSDAQ | 2025 | 4,291 | 162 | 118 |
| Samjin032750 | KOSDAQ | 2025 | 148 | 6 | 4 |
| SAMSUNG ELECTRO-MECHANICS CO.,LTD009150 | KOSPI | 2025 | 11,314 | 913 | 731 |
| SAMSUNG ELECTRONICS CO,.LTD005930 | KOSPI | 2025 | 333,606 | 43,601 | 45,207 |
| SAMWHA CAPACITOR CO.,LTD001820 | KOSPI | 2025 | 294 | 13 | 13 |
| SAMWHA ELECTRIC CO.,LTD009470 | KOSPI | 2025 | 230 | 12 | 11 |
| SAMWHA ELECTRONICS CO.,LTD011230 | KOSPI | 2025 | 30 | -8 | -9 |
| SAMYOUNG ELECTRONICS CO.,LTD005680 | KOSPI | 2025 | 150 | 9 | 5 |
| SAMYOUNG S&C CO., LTD.361670 | KOSDAQ | 2025 | 11 | -2 | -1 |
| Samyung ENC Co., Ltd.065570 | KOSDAQ | 2025 | 33 | -0 | 1 |
| SANGSHIN ELECTRONICS CO., LTD.263810 | KOSDAQ | 2025 | 129 | 3 | 2 |
| Sapien Semiconductors Inc.452430 | KOSDAQ | 2025 | 17 | -5 | -5 |
| SAWNICS INC.088280 | KOSDAQ | 2025 | 18 | -7 | -7 |
| SD system Co., Ltd121890 | KOSDAQ | 2025 | 29 | 1 | 1 |
| Se Gyung Hi Tech Co., Ltd.148150 | KOSDAQ | 2025 | 278 | 2 | 48 |
| SEJIN T.S CO., LTD.067770 | KOSDAQ | 2025 | 12 | -0 | 1 |
| SEMCNS Co., Ltd.252990 | KOSDAQ | 2025 | 78 | 15 | 15 |
| Sena Technologies Co., Ltd.061090 | KOSDAQ | 2025 | 179 | 16 | 17 |
| SENSORVIEW CO., LTD.321370 | KOSDAQ | 2025 | 19 | -12 | -15 |
| SEOUL SEMICONDUCTOR CO., LTD.046890 | KOSDAQ | 2025 | 1,014 | -32 | -60 |
| SEOUL VIOSYS CO., LTD.092190 | KOSDAQ | 2025 | 764 | 0 | -14 |
| SEOWONINTECH.CO.,LTD093920 | KOSDAQ | 2025 | 195 | 3 | 6 |
| SERONICS. CO., LTD.042600 | KOSDAQ | 2025 | 165 | -3 | -32 |
| SFA Semicon Co., Ltd036540 | KOSDAQ | 2025 | 367 | -20 | -19 |
| SHINSUNG E&G Co.,LTD.011930 | KOSPI | 2025 | 567 | 1 | -8 |
| Sigetronics, Inc.429270 | KOSDAQ | 2025 | 13 | -8 | -8 |
| Signetics Corp.033170 | KOSDAQ | 2025 | 103 | -24 | -18 |
| SIMMTECH Co., Ltd.222800 | KOSDAQ | 2025 | 1,411 | 12 | -165 |
| SINDOH CO.,LTD029530 | KOSPI | 2025 | 317 | 6 | 20 |
| SK hynix Inc.000660 | KOSPI | 2025 | 97,147 | 47,206 | 42,948 |
| Solid, Inc.050890 | KOSDAQ | 2025 | 295 | 33 | 36 |
| SOLUM CO., LTD.248070 | KOSPI | 2025 | 1,700 | 47 | 14 |
| Solus Advanced Materials Co. Ltd.336370 | KOSPI | 2025 | 616 | — | -138 |
| SUNGHO ELECTRONICS CORP.043260 | KOSDAQ | 2025 | 232 | 8 | 91 |
| SUNGMOON ELECTRONICS CO.,LTD014910 | KOSPI | 2025 | 54 | 2 | 2 |
| SUNGWOO TECHRON COMPANY045300 | KOSDAQ | 2025 | 41 | 2 | 5 |
| SUNGWOOELECTRONICSCO.,LTD.081580 | KOSDAQ | 2025 | 183 | 4 | 12 |
| SUNNY ELECTRONICS CO.,LTD004770 | KOSPI | 2025 | 12 | 2 | 4 |
| Suprema HQ Inc.094840 | KOSDAQ | 2025 | 21 | 4 | 13 |
| Suprema Inc.236200 | KOSDAQ | 2025 | 137 | 33 | 32 |
| SYNIC SOLUTION CO., LTD.234030 | KOSDAQ | 2025 | 155 | 3 | 2 |
| Synopex Inc.025320 | KOSDAQ | 2025 | 262 | 7 | 7 |
| TechL Co., LTD.064520 | KOSDAQ | 2025 | 18 | -6 | -5 |
| TelechipsInc.054450 | KOSDAQ | 2025 | 193 | -6 | -62 |
| TFE Co., Ltd.425420 | KOSDAQ | 2025 | 112 | 19 | 18 |
| THE CODI Co., LTD.224060 | KOSDAQ | 2025 | 25 | -1 | -16 |
| ThinkwareSystemsCorporation084730 | KOSDAQ | 2025 | 537 | 16 | -21 |
| TJ MEDIA CO.,LTD032540 | KOSDAQ | 2025 | 94 | 3 | 4 |
| TLB Co., Ltd.356860 | KOSDAQ | 2025 | 258 | 26 | 19 |
| TOP RUN TOTAL SOLUTION CO.,LTD336680 | KOSDAQ | 2025 | 550 | 9 | 6 |
| TOVISCo.,LTD051360 | KOSDAQ | 2025 | 640 | 57 | 45 |
| TRUEN Co., Ltd417790 | KOSDAQ | 2025 | 49 | 13 | 12 |
| U.I.DISPLAY CO.,LTD.069330 | KOSDAQ | 2025 | 50 | 1 | 1 |
| Ubiquoss Inc.264450 | KOSDAQ | 2025 | 116 | 23 | 24 |
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| UTI INC.179900 | KOSDAQ | 2025 | 20 | -48 | -37 |
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| Wavice Inc.289930 | KOSDAQ | 2025 | 41 | 1 | 2 |
| WELKEEPS HITECH CO.,LTD043590 | KOSDAQ | 2025 | 21 | -2 | -3 |
| WINPAC INC.097800 | KOSDAQ | 2025 | 76 | -14 | -14 |
| WiSoL Co.,LTD.122990 | KOSDAQ | 2025 | 321 | -36 | -42 |
| WITS Co., Ltd.459100 | KOSDAQ | 2025 | 169 | 3 | 3 |
| WOOREE E&L Haroutine Co.,LTD.153490 | KOSDAQ | 2025 | 121 | 0 | -1 |
| Woori-Net Co., Ltd.115440 | KOSDAQ | 2025 | 76 | 2 | 4 |
| WORLDEXINDUSTRY&TRADINGCO.,LTD101160 | KOSDAQ | 2025 | 292 | 59 | 41 |
| Xperix Inc.317770 | KOSDAQ | 2025 | 21 | -1 | -20 |
| Y2 Solution CO.,LTD011690 | KOSPI | 2025 | 165 | -3 | -10 |
| YMC Co., Ltd.155650 | KOSDAQ | 2025 | 173 | 5 | 1 |
| Zaram Technology,Inc.389020 | KOSDAQ | 2025 | 11 | -7 | -7 |
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