| 2026 |
| 06/03 | 4,405 | 4,570 | 4,390 | 4,520 | +4.27% | 183,300 | 1705億6574万 | +18.05% |
| 06/02 | 4,345 | 4,390 | 4,175 | 4,335 | -1.03% | 179,000 | 1635億8462万 | +15.29% |
| 06/01 | 4,245 | 4,450 | 4,215 | 4,380 | +2.82% | 193,000 | 1652億8273万 | +18.44% |
| 05/29 | 4,195 | 4,425 | 4,160 | 4,260 | +1.31% | 222,900 | 1607億5443万 | +17.1% |
| 05/28 | 4,145 | 4,240 | 4,070 | 4,205 | +0.36% | 197,300 | 1586億7897万 | +17.33% |
| 05/27 | 4,445 | 4,535 | 4,185 | 4,190 | -4.56% | 173,500 | 1581億1293万 | +18.53% |
| 05/26 | 4,525 | 4,525 | 4,355 | 4,390 | -2.98% | 189,000 | 1656億6009万 | +25.97% |
| 05/25 | 4,520 | 4,755 | 4,470 | 4,525 | +2.61% | 327,900 | 1707億5442万 | +32.16% |
| 05/22 | 4,365 | 4,550 | 4,350 | 4,410 | +2.68% | 406,200 | 1664億1480万 | +31.29% |
| 05/21 | (IR情報)14:00 「ログミー IR Meet 2026夏」企業紹介ブース出展のご案内 |
| 05/21 | 4,520 | 4,565 | 4,295 | 4,295 | -3.48% | 325,000 | 1620億7519万 | +30.23% |
| 05/20 | (IR情報)11:00 ナノメートル単位の微細な欠陥に有効な検査ソリューションを拡充 |
| 05/20 | 4,455 | 4,460 | 4,310 | 4,450 | -0.11% | 238,900 | 1679億2423万 | +37.26% |
| 05/19 | 4,545 | 4,560 | 4,415 | 4,455 | -1.87% | 303,000 | 1681億1291万 | +40.14% |
| 05/18 | 4,400 | 4,610 | 4,375 | 4,540 | +3.18% | 604,200 | 1713億2045万 | +45.75% |
| 05/15 | 4,145 | 4,455 | 4,075 | 4,400 | +13.84% | 921,500 | 1660億3744万 | +44.59% |
| 05/14 | 3,865 | 3,865 | 3,865 | 3,865 | +22.12% | 320,100 | 1458億4880万 | +29.96% |
| 05/13 | (IR情報)15:30 2026年12月期第1四半期決算説明資料 |
| 05/13 | (IR情報)15:30 2026年12月期第1四半期決算短信[日本基準](連結) |
| 05/13 | 3,150 | 3,170 | 3,115 | 3,165 | -0.31% | 120,300 | 1194億3375万 | +8.13% |
| 05/12 | 3,210 | 3,225 | 3,165 | 3,175 | -1.09% | 103,700 | 1198億1111万 | +9.22% |
| 05/11 | 3,230 | 3,275 | 3,185 | 3,210 | +1.42% | 207,300 | 1211億3186万 | +11.07% |
| 05/08 | 3,190 | 3,190 | 3,080 | 3,165 | 0% | 258,500 | 1194億3375万 | +10.47% |
| 05/07 | 3,035 | 3,195 | 3,035 | 3,165 | +6.03% | 229,300 | 1194億3375万 | +11.25% |
| 05/01 | 2,950 | 2,999 | 2,881 | 2,985 | +2.09% | 140,300 | 1126億4131万 | +5.51% |
| 04/30 | 2,892 | 2,937 | 2,892 | 2,924 | -0.61% | 90,000 | 1103億3943万 | +3.65% |
| 04/28 | 2,923 | 2,943 | 2,915 | 2,942 | +1.06% | 98,100 | 1110億1867万 | +4.51% |
| 04/27 | 2,892 | 2,941 | 2,849 | 2,911 | +1.75% | 106,600 | 1098億4886万 | +3.82% |
| 04/24 | (IR情報)17:45 譲渡制限付株式報酬としての自己株式の処分の払込完了に関するお知らせ |
| 04/24 | (IR情報)17:45 株式報酬型ストック・オプションの発行内容の確定に関するお知らせ |
| 04/24 | 2,835 | 2,884 | 2,823 | 2,861 | +2.73% | 122,800 | 1079億6207万 | +2.47% |
| 04/23 | 2,794 | 2,829 | 2,742 | 2,785 | -0.85% | 116,100 | 1050億9415万 | -0.04% |
| 04/22 | 2,856 | 2,866 | 2,796 | 2,809 | -1.92% | 88,200 | 1059億9981万 | +0.72% |
| 04/21 | 2,880 | 2,910 | 2,862 | 2,864 | -1.48% | 130,800 | 1080億7528万 | +2.73% |
| 04/20 | 2,959 | 2,959 | 2,856 | 2,907 | -2.78% | 159,300 | 1096億9792万 | +4.38% |
| 04/17 | 2,917 | 2,990 | 2,862 | 2,990 | +2.05% | 106,200 | 1128億2999万 | +7.55% |
| 04/16 | 2,916 | 2,942 | 2,905 | 2,930 | +1.6% | 92,200 | 1105億6584万 | +5.66% |
| 04/15 | 2,930 | 2,950 | 2,856 | 2,884 | +0.03% | 94,800 | 1088億3000万 | +4.04% |
| 04/14 | 2,905 | 2,926 | 2,855 | 2,883 | +0.03% | 145,800 | 1087億9226万 | +4.04% |
| 04/13 | 2,894 | 2,911 | 2,858 | 2,882 | -0.48% | 120,500 | 1087億5452万 | +4.27% |
| 04/10 | 2,892 | 2,919 | 2,879 | 2,896 | +0.77% | 90,700 | 1092億8283万 | +4.62% |
| 04/09 | (IR情報)11:30 マイクロメートルオーダーの繰返精度を実現。業界初、リニアリティを保証した光電センサ「ZA-Bシリーズ」発売 |
| 04/09 | 2,858 | 2,877 | 2,820 | 2,874 | -0.03% | 120,800 | 1084億5264万 | +3.79% |
| 04/08 | (IR情報)15:00 譲渡制限付株式報酬としての自己株式の処分に関するお知らせ |
| 04/08 | (IR情報)15:00 株式報酬型ストック・オプション(新株予約権)の発行について |
| 04/08 | 2,827 | 2,875 | 2,794 | 2,875 | +5.7% | 181,100 | 1084億9037万 | +3.87% |
| 04/07 | 2,695 | 2,724 | 2,691 | 2,720 | +1.15% | 100,300 | 1026億4133万 | -1.88% |
| 04/06 | (IR情報)11:00 シーシーエスが自動車・半導体検査ソリューションの展示会を東海地方のお客様向けに開催 |
| 04/06 | 2,670 | 2,706 | 2,670 | 2,689 | +0.37% | 81,700 | 1014億7152万 | -3.62% |
| 04/03 | 2,672 | 2,697 | 2,670 | 2,679 | +0.56% | 102,400 | 1010億9416万 | -4.7% |
| 04/02 | 2,755 | 2,778 | 2,664 | 2,664 | -3.09% | 115,200 | 1005億2812万 | -5.8% |
| 04/01 | 2,703 | 2,749 | 2,680 | 2,749 | +5.61% | 86,400 | 1037億3567万 | -3.44% |
| 03/31 | (IR情報)11:00 オプテックスグループ子会社2社が「健康経営優良法人2026」に認定されました |
| 03/31 | 2,600 | 2,644 | 2,575 | 2,603 | -2.33% | 132,300 | 982億2624万 | -8.89% |
| 03/30 | 2,602 | 2,677 | 2,583 | 2,665 | -3.16% | 152,400 | 1005億6586万 | -7.11% |
| 03/27 | (IR情報)15:00 オプテックス(株)、経団連推薦社内報審査で「審査委員特別賞」を受賞 |
| 03/27 | 2,753 | 2,772 | 2,697 | 2,752 | -1.08% | 144,600 | 1038億4887万 | -4.48% |
| 03/26 | 2,773 | 2,814 | 2,747 | 2,782 | +0.11% | 101,300 | 1049億8095万 | -3.67% |
| 03/25 | 2,745 | 2,813 | 2,733 | 2,779 | +4.4% | 157,400 | 1048億6774万 | -3.97% |
| 03/24 | 2,679 | 2,694 | 2,631 | 2,662 | +2.23% | 92,700 | 1004億5265万 | -7.92% |
| 03/23 | (5%ルール)野村證券(0.17%)野村アセットマネジメント(5.05%) |
| 03/23 | 2,650 | 2,674 | 2,582 | 2,604 | -4.69% | 182,800 | 982億6398万 | -9.71% |
| 03/19 | 2,747 | 2,750 | 2,682 | 2,732 | -4.04% | 539,800 | 1030億9416万 | -5.17% |
| 03/19 | (空売り報告)Nomura International plc 67,864株(0.17%)-0.33%義務消失 |
| 03/18 | 2,783 | 2,847 | 2,773 | 2,847 | +2.3% | 112,900 | 1074億3377万 | -0.87% |
| 03/18 | (空売り報告)Nomura International plc 191,044株(0.5%)再IN |
| 03/17 | 2,834 | 2,845 | 2,777 | 2,783 | -0.04% | 89,600 | 1050億1868万 | -2.59% |
| 03/16 | 2,750 | 2,821 | 2,728 | 2,784 | -0.18% | 131,000 | 1050億5642万 | -2.08% |
| 03/13 | 2,752 | 2,817 | 2,742 | 2,789 | -1.38% | 158,200 | 1052億4510万 | -1.41% |
| 03/12 | 2,870 | 2,877 | 2,804 | 2,828 | -2.31% | 124,300 | 1067億1679万 | +0.46% |
| 03/11 | 2,901 | 2,944 | 2,872 | 2,895 | +1.54% | 192,600 | 1092億4509万 | +3.43% |
| 03/10 | 2,772 | 2,894 | 2,770 | 2,851 | +4.89% | 154,700 | 1075億8472万 | +2.63% |
| 03/09 | 2,720 | 2,779 | 2,660 | 2,718 | -8.48% | 235,600 | 1025億6586万 | -1.52% |
| 03/06 | 2,893 | 2,979 | 2,874 | 2,970 | +1.05% | 161,600 | 1120億7527万 | +8.16% |
| 03/05 | 2,917 | 2,982 | 2,900 | 2,939 | +3.52% | 150,600 | 1109億546万 | +7.97% |
| 03/04 | 2,900 | 2,941 | 2,770 | 2,839 | -4.67% | 202,000 | 1071億3189万 | +5.07% |
| 03/04 | (空売り報告)Societe Generale 139,122株(0.36%)-0.31%義務消失 |
| 03/03 | (IR情報)11:00 「第12回 現場川柳」結果発表 |
| 03/03 | 3,175 | 3,195 | 2,962 | 2,978 | -6.35% | 254,000 | 1123億7716万 | +10.87% |
| 03/02 | 3,100 | 3,195 | 3,055 | 3,180 | -0.63% | 158,600 | 1199億9979万 | +19.19% |
| 02/27 | 3,095 | 3,200 | 3,040 | 3,200 | +3.39% | 180,900 | 1207億5450万 | +21.12% |
| 02/26 | 3,150 | 3,200 | 3,075 | 3,095 | -1.43% | 208,600 | 1167億9225万 | +18.45% |
| 02/25 | (5%ルール)Grantham, Mayo, Van Otterloo&Co.LLC(5%) |
| 02/25 | 3,030 | 3,190 | 2,981 | 3,140 | +3.97% | 268,800 | 1184億9036万 | +21.33% |
| 02/24 | 2,951 | 3,050 | 2,932 | 3,020 | +3.99% | 236,500 | 1139億6206万 | +17.69% |
| 02/20 | 2,906 | 2,909 | 2,841 | 2,904 | -1.46% | 169,100 | 1095億8471万 | +13.88% |
| 02/19 | 2,937 | 2,975 | 2,913 | 2,947 | +0.65% | 123,400 | 1112億735万 | +16.16% |
| 02/18 | 2,950 | 2,970 | 2,906 | 2,928 | -0.1% | 249,100 | 1104億9037万 | +16.14% |
| 02/17 | (5%ルール)野村證券(0.38%)野村アセットマネジメント(4.76%)ノムラインターナショナルピーエルシー(NOMURA IN…(0%) |
| 02/17 | 2,730 | 2,943 | 2,727 | 2,931 | +7.64% | 445,100 | 1106億358万 | +17.05% |
| 02/17 | (空売り報告)Societe Generale 253,122株(0.67%)-0.08% |
| 02/16 | 2,510 | 2,729 | 2,499 | 2,723 | +10.29% | 483,200 | 1027億5453万 | +9.53% |
| 02/16 | (空売り報告)Societe Generale 285,922株(0.75%)-0.37% |
| 02/13 | (IR情報)15:30 2025年12月期決算説明資料 |
| 02/13 | (IR情報)15:30 通期連結業績予想と実績との差異及び剰余金の配当(増配)並びに配当方針の変更に関するお知らせ |
| 02/13 | (IR情報)15:30 2025年12月期決算短信[日本基準](連結) |
| 02/13 | 2,525 | 2,525 | 2,447 | 2,469 | -2.8% | 210,500 | 931億6965万 | -0.28% |
| 02/12 | 2,522 | 2,540 | 2,504 | 2,540 | +1.11% | 263,200 | 958億4889万 | +2.46% |
| 02/10 | 2,476 | 2,514 | 2,466 | 2,512 | +1.87% | 127,800 | 947億9228万 | +1.33% |
| 02/09 | 2,495 | 2,495 | 2,455 | 2,466 | +1.57% | 126,700 | 930億5644万 | -0.6% |
| 02/06 | 2,437 | 2,445 | 2,406 | 2,428 | -0.45% | 107,300 | 916億2248万 | -2.29% |
| 02/05 | 2,450 | 2,462 | 2,428 | 2,439 | -0.16% | 118,500 | 920億3757万 | -2.09% |
| 02/04 | 2,401 | 2,443 | 2,392 | 2,443 | +0.78% | 128,900 | 921億8852万 | -2.16% |
| 02/03 | 2,404 | 2,435 | 2,395 | 2,424 | +2.02% | 114,900 | 914億7154万 | -3.19% |
| 02/02 | 2,420 | 2,454 | 2,369 | 2,376 | -0.71% | 150,400 | 896億6022万 | -5.38% |
| 01/30 | 2,377 | 2,395 | 2,351 | 2,393 | +1.61% | 130,500 | 903億173万 | -5.15% |
| 01/29 | 2,372 | 2,377 | 2,338 | 2,355 | -1.22% | 166,000 | 888億6777万 | -7.14% |
| 01/28 | 2,411 | 2,432 | 2,377 | 2,384 | -2.05% | 166,200 | 899億6210万 | -6.51% |
| 01/27 | 2,419 | 2,455 | 2,406 | 2,434 | -0.21% | 106,100 | 918億4889万 | -5.07% |
| 01/26 | 2,472 | 2,480 | 2,430 | 2,439 | -3.29% | 122,800 | 920億3757万 | -5.28% |
| 01/23 | (IR情報)13:00 オプテックスグループ、日興アイ・アール「2025年度 全上場企業ホームページ充実度ランキング」 で「総合部門 優良サイト」に初選出 |
| 01/23 | 2,528 | 2,541 | 2,505 | 2,522 | -0.36% | 128,800 | 951億6964万 | -2.44% |
| 01/22 | 2,500 | 2,538 | 2,488 | 2,531 | +2.14% | 167,300 | 955億926万 | -2.39% |
| 01/21 | 2,415 | 2,487 | 2,411 | 2,478 | +0.04% | 161,800 | 935億927万 | -4.77% |
| 01/20 | 2,555 | 2,556 | 2,477 | 2,477 | -4.4% | 165,100 | 934億7153万 | -5.1% |
| 01/19 | (IR情報)15:30 グループ内組織再編(連結子会社間の吸収分割及び吸収合併)に関するお知らせ |
| 01/19 | 2,612 | 2,612 | 2,556 | 2,591 | -0.8% | 117,800 | 977億7341万 | -0.99% |
| 01/16 | 2,580 | 2,614 | 2,568 | 2,612 | +1.36% | 187,100 | 985億6586万 | -0.19% |
| 01/15 | 2,547 | 2,586 | 2,540 | 2,577 | +1.18% | 212,600 | 972億4511万 | -1.42% |
| 01/14 | 2,538 | 2,592 | 2,517 | 2,547 | +1.19% | 181,800 | 961億1304万 | -2.41% |
| 01/13 | 2,523 | 2,540 | 2,490 | 2,517 | +1.78% | 257,600 | 949億8096万 | -3.45% |
| 01/13 | (空売り報告)Nomura International plc 142,218株(0.37%)-0.21%義務消失 |
| 01/09 | 2,499 | 2,513 | 2,454 | 2,473 | +0.28% | 138,700 | 933億2059万 | -4.96% |
| 01/08 | 2,526 | 2,530 | 2,465 | 2,466 | -3.1% | 185,100 | 930億5644万 | -5.12% |
| 01/08 | (空売り報告)モルガン・スタンレーMUFG証券 187,905株(0.49%)-0.04%義務消失 |
| 01/07 | 2,572 | 2,600 | 2,545 | 2,545 | -0.16% | 229,900 | 960億3757万 | -2% |
| 01/06 | 2,570 | 2,572 | 2,525 | 2,549 | -0.7% | 209,700 | 961億8851万 | -1.7% |
| 01/06 | (空売り報告)モルガン・スタンレーMUFG証券 203,605株(0.53%)-0.15% |
| 01/05 | 2,560 | 2,575 | 2,532 | 2,567 | +0.47% | 143,000 | 968億6775万 | -0.77% |
| 12/30 | (空売り報告)モルガン・スタンレーMUFG証券 257,705株(0.68%)-0.08% |