| 2026 |
| 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% |
| 01/27 | 1,262 | 1,281 | 1,251 | 1,280 | 0% | 2,599,800 | 1兆6495億 | +4.58% |
| 01/26 | 1,273 | 1,288 | 1,270 | 1,280 | -0.85% | 3,326,500 | 1兆6495億 | +5% |
| 01/23 | 1,294 | 1,305 | 1,289 | 1,291 | +0.16% | 2,388,300 | 1兆6637億 | +6.26% |
| 01/22 | 1,280 | 1,300 | 1,276 | 1,289 | +1.74% | 2,896,000 | 1兆6611億 | +6.44% |
| 01/21 | 1,256 | 1,267 | 1,251 | 1,267 | +0.24% | 2,961,000 | 1兆6328億 | +5.06% |
| 01/20 | 1,275 | 1,279 | 1,264 | 1,264 | -1.4% | 2,626,100 | 1兆6289億 | +5.16% |
| 01/19 | （IR情報）13:00 プラスチックの資源循環実現に貢献する油化ケミカルリサイクル設備が完工 |
| 01/19 | 1,285 | 1,288 | 1,263 | 1,282 | -0.62% | 2,226,700 | 1兆6521億 | +6.92% |
| 01/16 | 1,276 | 1,300 | 1,275 | 1,290 | +1.1% | 4,149,400 | 1兆6624億 | +8.04% |
| 01/15 | 1,268 | 1,284 | 1,263 | 1,276 | 0% | 3,281,700 | 1兆6444億 | +7.32% |
| 01/14 | 1,260 | 1,276 | 1,252 | 1,276 | +2.82% | 3,450,400 | 1兆6444億 | +7.77% |
| 01/13 | 1,233 | 1,244 | 1,229 | 1,241 | +2.39% | 3,310,600 | 1兆5993億 | +5.26% |
| 01/09 | 1,204 | 1,219 | 1,200 | 1,212 | +2.02% | 3,552,300 | 1兆5619億 | +3.15% |
| 01/08 | （5%ルール）MIパワー（0.97%）日章興産（8.5%）善（1.38%）縁（1.37%）正和興産（1.93%） |
| 01/08 | 1,187 | 1,195 | 1,179 | 1,188 | -0.08% | 3,297,100 | 1兆5310億 | +1.28% |
| 01/07 | 1,210 | 1,217 | 1,183 | 1,189 | -2.54% | 3,153,400 | 1兆5323億 | +1.54% |
| 01/07 | （空売り報告）大和証券 5,377,472株（0.41%）-0.11%義務消失 |
| 01/06 | 1,188 | 1,222 | 1,187 | 1,220 | +3.39% | 4,000,400 | 1兆5722億 | +4.27% |
| 01/05 | 1,190 | 1,196 | 1,174 | 1,180 | -0.25% | 3,950,100 | 1兆5207億 | +1.11% |
| 2025 |
| 12/30 | 1,181 | 1,198 | 1,176 | 1,183 | 0% | 2,360,700 | 1兆5245億 | +1.55% |
| 12/29 | 1,173 | 1,184 | 1,172 | 1,183 | +0.94% | 1,808,800 | 1兆5245億 | +1.63% |
| 12/26 | 1,178 | 1,184 | 1,172 | 1,172 | -0.51% | 1,449,700 | 1兆5104億 | +0.77% |
| 12/26 | （空売り報告）大和証券 6,772,764株（0.52%）-0.1% |
| 12/25 | 1,173 | 1,181 | 1,170 | 1,178 | +0.26% | 1,548,700 | 1兆5181億 | +1.46% |
| 12/24 | 1,173 | 1,183 | 1,171 | 1,175 | +0.17% | 1,661,200 | 1兆5142億 | +1.38% |
| 12/23 | 1,175 | 1,183 | 1,167 | 1,173 | +0.09% | 1,878,300 | 1兆5117億 | +1.38% |
| 12/22 | （5%ルール）MIパワー（0.97%）日章興産（8.5%）善（1.38%）縁（1.37%）正和興産（1.93%） |
| 12/22 | （5%ルール）MIパワー（0.97%）日章興産（9.9%）善（0.72%）縁（0.62%）正和興産（1.93%） |
| 12/22 | 1,173 | 1,178 | 1,168 | 1,172 | +1.03% | 2,254,500 | 1兆5104億 | +1.38% |
| 12/19 | （IR情報）11:00 「千葉地区エチレン装置集約による生産最適化」の最終合意 について |
| 12/19 | 1,172 | 1,176 | 1,160 | 1,160 | -0.77% | 6,653,500 | 1兆4949億 | +0.52% |
| 12/18 | 1,184 | 1,185 | 1,165 | 1,169 | +0.43% | 2,011,200 | 1兆5065億 | +1.48% |
| 12/18 | （空売り報告）大和証券 8,117,463株（0.62%）-0.11% |
| 12/17 | 1,164 | 1,170 | 1,146 | 1,164 | -0.94% | 2,993,300 | 1兆5001億 | +1.22% |
| 12/16 | 1,182 | 1,188 | 1,169 | 1,175 | -0.93% | 3,446,400 | 1兆5142億 | +2.44% |
| 12/15 | 1,183 | 1,191 | 1,178 | 1,186 | +0.51% | 2,245,600 | 1兆5284億 | +3.67% |
| 12/12 | 1,171 | 1,180 | 1,164 | 1,180 | +1.11% | 3,616,000 | 1兆5207億 | +3.6% |
| 12/11 | 1,184 | 1,187 | 1,159 | 1,167 | -0.6% | 2,926,000 | 1兆5039億 | +2.91% |
| 12/11 | （空売り報告）大和証券 9,508,840株（0.73%）-0.11% |
| 12/10 | 1,171 | 1,183 | 1,165 | 1,174 | +1.21% | 3,844,000 | 1兆5129億 | +3.89% |
| 12/09 | 1,157 | 1,169 | 1,155 | 1,160 | -0.34% | 2,589,000 | 1兆4949億 | +2.93% |
| 12/08 | 1,165 | 1,168 | 1,154 | 1,164 | +1.13% | 2,715,400 | 1兆5001億 | +3.65% |
| 12/05 | 1,170 | 1,172 | 1,151 | 1,151 | -0.86% | 4,322,700 | 1兆4833億 | +2.77% |
| 12/04 | 1,145 | 1,164 | 1,143 | 1,161 | +1.22% | 2,781,100 | 1兆4962億 | +3.94% |
| 12/03 | 1,145 | 1,153 | 1,136 | 1,147 | +0.44% | 3,721,400 | 1兆4781億 | +3.05% |
| 12/02 | 1,147 | 1,160 | 1,138 | 1,142 | -0.61% | 3,263,900 | 1兆4717億 | +2.79% |
| 12/02 | （空売り報告）大和証券 10,839,826株（0.84%）-0.11% |
| 12/01 | 1,160 | 1,165 | 1,142 | 1,149 | -0.69% | 3,799,600 | 1兆4807億 | +3.79% |
| 11/28 | 1,151 | 1,160 | 1,150 | 1,157 | +0.87% | 2,589,800 | 1兆4910億 | +4.9% |
| 11/27 | 1,155 | 1,161 | 1,144 | 1,147 | 0% | 2,147,600 | 1兆4781億 | +4.46% |
| 11/26 | 1,146 | 1,153 | 1,133 | 1,147 | +0.09% | 4,088,200 | 1兆4781億 | +4.94% |
| 11/25 | 1,156 | 1,156 | 1,140 | 1,146 | -0.09% | 2,671,600 | 1兆4769億 | +5.33% |
| 11/21 | （IR情報）17:30 主要株主の異動に関するお知らせ |
| 11/21 | （5%ルール）MIパワー（0.97%）日章興産（9.9%）善（0.72%）縁（0.62%）正和興産（1.93%） |
10年以上蓄積したファイナンスデータとAIを掛け合わせて、投資の意思決定を加速させるポジションです。
