| 2026 |
| 06/25 | 1,279 | 1,281 | 1,204 | 1,210 | -1.87% | 4,715,400 | 1兆5593億 | -8.12% |
| 06/24 | 1,249 | 1,252 | 1,230 | 1,233 | -1.36% | 3,508,600 | 1兆5890億 | -6.8% |
| 06/23 | (IR情報)14:00 2026年度「SOMPOサステナビリティ・インデックス」構成銘柄に選定 |
| 06/23 | 1,268 | 1,272 | 1,245 | 1,250 | -0.32% | 4,558,800 | 1兆6109億 | -5.87% |
| 06/22 | 1,256 | 1,265 | 1,238 | 1,254 | -0.48% | 3,371,900 | 1兆6160億 | -5.93% |
| 06/19 | 1,237 | 1,260 | 1,217 | 1,260 | +1.12% | 10,404,900 | 1兆6238億 | -5.83% |
| 06/18 | (IR情報)15:00 JAXA「宇宙戦略基金」の補助金交付が決定 宇宙用CIGS太陽電池の量産技術開発を加速 |
| 06/18 | 1,294 | 1,295 | 1,244 | 1,246 | -3.04% | 4,125,300 | 1兆6057億 | -7.29% |
| 06/17 | 1,285 | 1,293 | 1,251 | 1,285 | -0.23% | 4,040,400 | 1兆6560億 | -4.89% |
| 06/16 | 1,309 | 1,320 | 1,288 | 1,288 | -3.3% | 3,618,200 | 1兆6599億 | -5.01% |
| 06/15 | 1,329 | 1,363 | 1,319 | 1,332 | +1.29% | 3,327,700 | 1兆7166億 | -2.06% |
| 06/12 | 1,359 | 1,365 | 1,301 | 1,315 | -2.16% | 5,523,600 | 1兆6947億 | -3.38% |
| 06/11 | (IR情報)10:30 自己株式の取得結果および取得終了並びに消却株式数に関するお知らせ |
| 06/11 | 1,346 | 1,370 | 1,333 | 1,344 | +0.9% | 3,531,900 | 1兆7320億 | -1.32% |
| 06/10 | 1,328 | 1,343 | 1,321 | 1,332 | -0.52% | 3,746,500 | 1兆7166億 | -2.27% |
| 06/09 | (5%ルール)MIパワー(1.03%)出光千惠子(0.39%)日章興産(8.95%)善(1.46%)縁(1.44%)正和興産(2.03%) |
| 06/09 | 1,361 | 1,378 | 1,339 | 1,339 | -0.74% | 5,626,100 | 1兆7256億 | -1.83% |
| 06/08 | 1,365 | 1,378 | 1,337 | 1,349 | -2.32% | 4,287,600 | 1兆7385億 | -1.17% |
| 06/05 | 1,407 | 1,413 | 1,373 | 1,381 | -1.15% | 3,641,300 | 1兆7797億 | +1.17% |
| 06/04 | 1,408 | 1,409 | 1,386 | 1,397 | -0.78% | 3,359,600 | 1兆8003億 | +2.57% |
| 06/03 | 1,382 | 1,415 | 1,361 | 1,408 | +3.91% | 5,315,700 | 1兆8145億 | +3.53% |
| 06/02 | 1,330 | 1,368 | 1,318 | 1,355 | -0.15% | 5,527,800 | 1兆7462億 | -0.15% |
| 06/01 | (IR情報)15:30 自己株式の取得状況に関するお知らせ |
| 06/01 | (IR情報)15:30 エス・ディー・エス バイオテックとアグロ カネショウを統合 新会社「出光クロップアーツ株式会社」を2027年4月に設立 |
| 06/01 | 1,385 | 1,391 | 1,333 | 1,357 | -3% | 4,699,300 | 1兆7488億 | -0.07% |
| 05/29 | 1,298 | 1,399 | 1,296 | 1,399 | +6.39% | 11,955,600 | 1兆8029億 | +2.79% |
| 05/28 | (5%ルール)出光千惠子(0.39%)日章興産(8.95%) |
| 05/28 | 1,301 | 1,322 | 1,300 | 1,315 | -0.9% | 8,683,900 | 1兆6947億 | -3.52% |
| 05/27 | 1,306 | 1,330 | 1,306 | 1,327 | +1.61% | 4,124,300 | 1兆7101億 | -3.07% |
| 05/26 | (IR情報)16:00 (訂正)「中期経営計画(2026-2030年度)」の一部訂正に関するお知らせ |
| 05/26 | 1,303 | 1,310 | 1,285 | 1,306 | -0.53% | 3,226,800 | 1兆6831億 | -5.16% |
| 05/25 | 1,332 | 1,342 | 1,303 | 1,313 | -1.43% | 3,597,500 | 1兆6921億 | -5.2% |
| 05/22 | 1,331 | 1,339 | 1,321 | 1,332 | -1.04% | 4,180,400 | 1兆7166億 | -4.45% |
| 05/21 | 1,357 | 1,372 | 1,337 | 1,346 | -2.11% | 3,702,000 | 1兆7346億 | -3.99% |
| 05/20 | (IR情報)15:00 固体電解質(全固体電池材料)大型パイロット装置の建設に向け、立柱式を実施 |
| 05/20 | 1,377 | 1,394 | 1,371 | 1,375 | -0.15% | 4,665,700 | 1兆7720億 | -2.48% |
| 05/19 | 1,388 | 1,395 | 1,353 | 1,377 | +0.81% | 4,699,300 | 1兆7746億 | -2.82% |
| 05/18 | 1,434 | 1,446 | 1,366 | 1,366 | -4.34% | 5,863,400 | 1兆7604億 | -4.14% |
| 05/15 | 1,418 | 1,448 | 1,405 | 1,428 | +0.71% | 6,853,600 | 1兆8403億 | -0.63% |
| 05/14 | 1,388 | 1,426 | 1,366 | 1,418 | +2.09% | 6,963,600 | 1兆8274億 | -1.87% |
| 05/13 | 1,320 | 1,406 | 1,319 | 1,389 | -0.36% | 8,769,600 | 1兆7900億 | -4.34% |
| 05/12 | (IR情報)15:30 代表取締役及び役員の異動内定に関するお知らせ |
| 05/12 | (IR情報)15:30 業績連動型株式報酬制度の継続及び改定に関するお知らせ |
| 05/12 | (IR情報)15:30 中期経営計画(2026-2030年度) |
| 05/12 | (IR情報)15:30 中期経営計画(2026-2030年度)の策定およびIFRS任意適用について |
| 05/12 | (IR情報)15:30 自己株式取得に係る事項の決定および自己株式の消却に関するお知らせ |
| 05/12 | (IR情報)15:30 業績予想値と決算値との差異に関するお知らせ |
| 05/12 | (IR情報)15:30 2025年度決算説明資料 |
| 05/12 | (IR情報)15:30 2026年3月期決算短信〔日本基準〕(連結) |
| 05/12 | 1,372 | 1,410 | 1,371 | 1,394 | +2.5% | 4,718,800 | 1兆7965億 | -4.39% |
| 05/11 | 1,329 | 1,366 | 1,323 | 1,360 | +1.42% | 3,701,300 | 1兆7526億 | -7.29% |
| 05/08 | 1,370 | 1,375 | 1,327 | 1,341 | -2.12% | 5,627,400 | 1兆7282億 | -9.02% |
| 05/07 | (IR情報)13:00 自己株式の取得状況に関するお知らせ |
| 05/07 | 1,349 | 1,385 | 1,340 | 1,370 | 0% | 6,407,600 | 1兆7655億 | -7.56% |
| 05/01 | 1,349 | 1,370 | 1,326 | 1,370 | +1.56% | 4,688,500 | 1兆7655億 | -8.05% |
| 04/30 | 1,374 | 1,380 | 1,336 | 1,349 | +0.07% | 8,432,600 | 1兆7385億 | -9.83% |
| 04/28 | 1,333 | 1,351 | 1,327 | 1,348 | +2.51% | 3,745,900 | 1兆7372億 | -10.25% |
| 04/27 | (IR情報)10:00 【個人投資家向け】ログミーファイナンスIRセミナー登壇のお知らせ |
| 04/27 | 1,322 | 1,335 | 1,300 | 1,315 | -1.57% | 3,600,600 | 1兆6947億 | -12.68% |
| 04/24 | (IR情報)16:30 国内ポリオレフィン事業の統合に関する公正取引委員会の審査結果について |
| 04/24 | (IR情報)15:30 財務上の特約が付された金銭消費貸借契約の締結について |
| 04/24 | 1,348 | 1,360 | 1,336 | 1,336 | -0.74% | 4,462,900 | 1兆7217億 | -11.52% |
| 04/23 | 1,325 | 1,353 | 1,324 | 1,346 | -2.82% | 5,735,900 | 1兆7346億 | -11.21% |
| 04/22 | 1,415 | 1,422 | 1,385 | 1,385 | -1.91% | 4,936,300 | 1兆7849億 | -9.06% |
| 04/21 | (IR情報)15:30 自己株式の消却に関するお知らせ |
| 04/21 | 1,447 | 1,450 | 1,412 | 1,412 | -2.28% | 4,973,500 | 1兆8197億 | -7.53% |
| 04/20 | 1,487 | 1,493 | 1,443 | 1,445 | -2.89% | 4,176,900 | 1兆8622億 | -5.43% |
| 04/17 | 1,511 | 1,517 | 1,488 | 1,488 | -1.13% | 3,527,000 | 1兆9176億 | -2.68% |
| 04/16 | 1,509 | 1,525 | 1,505 | 1,505 | -0.27% | 3,094,200 | 1兆9395億 | -1.44% |
| 04/15 | 1,524 | 1,539 | 1,498 | 1,509 | -1.76% | 4,061,100 | 1兆9447億 | -0.98% |
| 04/14 | 1,525 | 1,546 | 1,495 | 1,536 | -0.65% | 3,772,800 | 1兆9795億 | +0.99% |
| 04/13 | 1,562 | 1,581 | 1,538 | 1,546 | +0.13% | 2,946,500 | 1兆9924億 | +2.05% |
| 04/10 | (IR情報)11:00 5社共同で、使用済みプラスチックを用いた再生プラスチックの製造・建設資材への活用に成功 |
| 04/10 | 1,559 | 1,577 | 1,537 | 1,544 | -0.96% | 4,074,200 | 1兆9898億 | +2.18% |
| 04/09 | 1,571 | 1,603 | 1,522 | 1,559 | -0.19% | 7,882,100 | 2兆91億 | +3.45% |
| 04/08 | 1,659 | 1,669 | 1,562 | 1,562 | -5.85% | 9,112,900 | 2兆130億 | +4.13% |
| 04/07 | 1,634 | 1,671 | 1,634 | 1,659 | +1.97% | 5,616,800 | 2兆1380億 | +10.82% |
| 04/06 | 1,595 | 1,649 | 1,592 | 1,627 | +2.01% | 3,685,600 | 2兆967億 | +9.12% |
| 04/03 | 1,568 | 1,597 | 1,567 | 1,595 | +2.24% | 2,624,000 | 2兆555億 | +7.34% |
| 04/02 | 1,589 | 1,604 | 1,552 | 1,560 | -2.26% | 4,702,500 | 2兆104億 | +5.55% |
| 04/01 | (IR情報)11:00 自己株式の取得状況に関するお知らせ |
| 04/01 | 1,551 | 1,598 | 1,549 | 1,596 | +3.5% | 5,162,700 | 2兆568億 | +8.5% |
| 03/31 | 1,566 | 1,579 | 1,529 | 1,542 | -1.03% | 5,443,700 | 1兆9872億 | +5.33% |
| 03/30 | 1,500 | 1,562 | 1,495 | 1,558 | +0.26% | 5,656,900 | 2兆78億 | +6.79% |
| 03/27 | 1,535 | 1,558 | 1,517 | 1,554 | +1.7% | 4,338,200 | 2兆27億 | +6.95% |
| 03/26 | 1,509 | 1,528 | 1,504 | 1,528 | +2.62% | 3,660,300 | 1兆9692億 | +5.6% |
| 03/25 | 1,513 | 1,517 | 1,477 | 1,489 | +1.99% | 4,293,500 | 1兆9189億 | +3.33% |
| 03/24 | 1,450 | 1,476 | 1,440 | 1,460 | +3.69% | 3,748,100 | 1兆8815億 | +1.67% |
| 03/23 | 1,412 | 1,431 | 1,393 | 1,408 | -4.8% | 5,509,100 | 1兆8145億 | -1.74% |
| 03/19 | 1,510 | 1,525 | 1,475 | 1,479 | -3.77% | 5,338,900 | 1兆9060億 | +3.14% |
| 03/18 | 1,490 | 1,543 | 1,487 | 1,537 | +3.99% | 3,582,400 | 1兆9808億 | +7.33% |
| 03/17 | (IR情報)16:00 LNG事業への本格参入に向けMidOcean Energyへ出資を決定 |
| 03/17 | 1,440 | 1,487 | 1,438 | 1,478 | +2.5% | 3,236,900 | 1兆9047億 | +3.5% |
| 03/16 | (IR情報)11:00 一括取得型自己株式取得(ASR)における事後調整完了のお知らせ |
| 03/16 | 1,472 | 1,474 | 1,440 | 1,442 | -1.37% | 3,395,600 | 1兆8583億 | +1.12% |
| 03/13 | (IR情報)15:30 次期中期経営計画の公表日程の延期について |
| 03/13 | 1,427 | 1,483 | 1,423 | 1,462 | +1.46% | 4,383,600 | 1兆8841億 | +2.67% |
| 03/12 | 1,440 | 1,441 | 1,419 | 1,441 | +0.07% | 3,268,900 | 1兆8570億 | +1.41% |
| 03/11 | 1,439 | 1,454 | 1,434 | 1,440 | +0.56% | 2,863,100 | 1兆8557億 | +1.55% |
| 03/10 | 1,400 | 1,444 | 1,392 | 1,432 | +3.24% | 4,457,500 | 1兆8454億 | +1.42% |
| 03/09 | 1,401 | 1,422 | 1,377 | 1,387 | -2.8% | 5,324,600 | 1兆7874億 | -1.42% |
| 03/06 | 1,433 | 1,450 | 1,420 | 1,427 | -2.13% | 4,991,200 | 1兆8390億 | +1.71% |
| 03/05 | 1,418 | 1,462 | 1,399 | 1,458 | +5.04% | 5,896,700 | 1兆8789億 | +4.44% |
| 03/04 | 1,425 | 1,428 | 1,363 | 1,388 | -5.71% | 5,409,000 | 1兆7887億 | -0.07% |
| 03/03 | 1,510 | 1,514 | 1,448 | 1,472 | -3.09% | 5,923,500 | 1兆8970億 | +6.28% |
| 03/02 | 1,553 | 1,562 | 1,492 | 1,519 | +1.88% | 7,555,900 | 1兆9576億 | +10.23% |
| 02/27 | 1,434 | 1,495 | 1,419 | 1,491 | +6.2% | 6,645,900 | 1兆9215億 | +8.99% |
| 02/26 | 1,406 | 1,417 | 1,399 | 1,404 | +0.93% | 2,875,800 | 1兆8094億 | +3.31% |
| 02/25 | 1,430 | 1,430 | 1,375 | 1,391 | -1.14% | 4,802,000 | 1兆7926億 | +2.73% |
| 02/24 | 1,421 | 1,423 | 1,385 | 1,407 | -0.71% | 3,422,600 | 1兆8132億 | +4.3% |
| 02/20 | 1,425 | 1,426 | 1,402 | 1,417 | -0.49% | 3,292,900 | 1兆8261億 | +5.35% |
| 02/19 | 1,420 | 1,435 | 1,402 | 1,424 | +2.08% | 3,280,400 | 1兆8351億 | +6.35% |
| 02/18 | 1,376 | 1,396 | 1,371 | 1,395 | +1.38% | 2,608,600 | 1兆7978億 | +4.65% |
| 02/17 | 1,384 | 1,394 | 1,365 | 1,376 | +0.73% | 2,209,700 | 1兆7733億 | +3.69% |
| 02/16 | 1,394 | 1,394 | 1,366 | 1,366 | -1.3% | 3,124,900 | 1兆7604億 | +3.41% |
| 02/13 | 1,410 | 1,425 | 1,384 | 1,384 | -2.74% | 5,677,500 | 1兆7836億 | +5.41% |
| 02/12 | 1,497 | 1,497 | 1,423 | 1,423 | -1.79% | 7,213,000 | 1兆8338億 | +8.96% |
| 02/10 | (IR情報)15:30 2026年3月期第3四半期決算短信〔日本基準〕(連結) |
| 02/10 | (IR情報)15:30 2025年度第3四半期決算説明資料 |
| 02/10 | 1,438 | 1,457 | 1,434 | 1,449 | +1.61% | 4,484,200 | 1兆8673億 | +11.72% |
| 02/09 | 1,449 | 1,455 | 1,421 | 1,426 | +0.49% | 4,799,700 | 1兆8377億 | +10.8% |
| 02/06 | 1,379 | 1,424 | 1,378 | 1,419 | +2.01% | 3,728,000 | 1兆8287億 | +11.12% |
| 02/05 | 1,416 | 1,431 | 1,387 | 1,391 | -1.21% | 5,342,000 | 1兆7926億 | +9.7% |
| 02/04 | 1,354 | 1,422 | 1,345 | 1,408 | +4.68% | 4,579,500 | 1兆8145億 | +11.83% |
| 02/03 | 1,315 | 1,345 | 1,310 | 1,345 | +3.86% | 3,247,800 | 1兆7333億 | +7.6% |
| 02/02 | 1,325 | 1,332 | 1,290 | 1,295 | -0.92% | 3,396,900 | 1兆6689億 | +4.18% |
| 01/30 | 1,320 | 1,327 | 1,290 | 1,307 | +1.08% | 4,959,400 | 1兆6843億 | +5.57% |
| 01/29 | (IR情報)15:00 固体電解質(全固体電池材料)大型パイロット装置の最終投資決定および建設開始について |
| 01/29 | 1,258 | 1,310 | 1,239 | 1,293 | +2.7% | 4,992,200 | 1兆6663億 | +4.87% |
| 01/28 | 1,280 | 1,280 | 1,255 | 1,259 | -1.64% | 3,546,500 | 1兆6225億 | +2.61% |