| 2024 |
| 04/24 | 3,475 | 3,540 | 3,425 | 3,505 | +0.86% | 15,500 | 315億3906万 | -5.88% |
| 04/23 | 3,525 | 3,525 | 3,455 | 3,475 | -0.29% | 4,700 | 312億6912万 | -6.91% |
| 04/22 | 3,505 | 3,520 | 3,430 | 3,485 | +0.58% | 11,800 | 313億5910万 | -6.84% |
| 04/19 | 3,585 | 3,585 | 3,420 | 3,465 | -3.21% | 20,400 | 311億7913万 | -7.58% |
| 04/18 | 3,505 | 3,580 | 3,505 | 3,580 | +1.99% | 7,500 | 322億1394万 | -4.74% |
| 04/17 | 3,605 | 3,630 | 3,495 | 3,510 | -2.64% | 11,800 | 315億8406万 | -6.6% |
| 04/16 | （IR情報）15:00 定款一部変更に関するお知らせ |
| 04/16 | （IR情報）15:00 監査等委員会設置会社移行後の役員人事に関するお知らせ |
| 04/16 | 3,770 | 3,770 | 3,535 | 3,605 | -4.76% | 23,300 | 324億3890万 | -4.17% |
| 04/15 | 3,785 | 3,810 | 3,765 | 3,785 | -1.82% | 7,400 | 340億5859万 | +0.64% |
| 04/12 | 3,880 | 3,900 | 3,830 | 3,855 | -0.64% | 5,400 | 346億8847万 | +2.64% |
| 04/11 | 3,870 | 3,900 | 3,840 | 3,880 | 0% | 4,500 | 349億1343万 | +3.6% |
| 04/10 | 3,835 | 3,895 | 3,835 | 3,880 | +1.17% | 5,500 | 349億1343万 | +3.85% |
| 04/09 | 3,840 | 3,915 | 3,825 | 3,835 | 0% | 7,400 | 345億851万 | +2.93% |
| 04/08 | 3,815 | 3,835 | 3,765 | 3,835 | +0.52% | 6,800 | 345億851万 | +3.2% |
| 04/05 | 3,770 | 3,835 | 3,745 | 3,815 | -0.78% | 7,400 | 343億2854万 | +2.86% |
| 04/04 | 3,815 | 3,850 | 3,815 | 3,845 | +2.26% | 8,000 | 345億9849万 | +3.95% |
| 04/03 | 3,750 | 3,805 | 3,725 | 3,760 | -0.66% | 9,400 | 338億3363万 | +1.9% |
| 04/02 | 3,790 | 3,820 | 3,745 | 3,785 | +0.13% | 12,800 | 340億5859万 | +2.74% |
| 04/01 | 3,850 | 3,850 | 3,780 | 3,780 | -1.82% | 10,300 | 340億1360万 | +2.86% |
| 03/29 | 3,765 | 3,850 | 3,765 | 3,850 | +2.53% | 12,400 | 346億4348万 | +4.99% |
| 03/28 | 3,830 | 3,830 | 3,745 | 3,755 | -2.09% | 9,500 | 337億8864万 | +2.74% |
| 03/27 | 3,765 | 3,855 | 3,765 | 3,835 | +1.86% | 21,600 | 345億851万 | +5.07% |
| 03/26 | 3,755 | 3,785 | 3,700 | 3,765 | +0.27% | 6,900 | 338億7862万 | +3.35% |
| 03/25 | 3,740 | 3,800 | 3,725 | 3,755 | +0.94% | 16,400 | 337億8864万 | +3.22% |
| 03/22 | 3,750 | 3,760 | 3,720 | 3,720 | -0.8% | 8,400 | 334億7370万 | +2.56% |
| 03/21 | 3,735 | 3,770 | 3,715 | 3,750 | +0.94% | 13,800 | 337億4365万 | +3.65% |
| 03/19 | 3,685 | 3,715 | 3,660 | 3,715 | +1.09% | 5,100 | 334億2871万 | +2.91% |
| 03/18 | （IR情報）15:00 監査等委員会設置会社への移行に関するお知らせ |
| 03/18 | 3,715 | 3,720 | 3,665 | 3,675 | -0.41% | 6,600 | 330億6878万 | +2.11% |
| 03/15 | 3,665 | 3,695 | 3,650 | 3,690 | +0.14% | 6,400 | 332億375万 | +2.73% |
| 03/14 | 3,595 | 3,685 | 3,595 | 3,685 | +2.5% | 14,800 | 331億5876万 | +2.82% |
| 03/13 | 3,600 | 3,665 | 3,590 | 3,595 | -0.14% | 18,500 | 323億4891万 | +0.48% |
| 03/12 | 3,570 | 3,600 | 3,530 | 3,600 | +0.56% | 6,100 | 323億9390万 | +0.61% |
| 03/11 | 3,640 | 3,650 | 3,560 | 3,580 | -2.05% | 19,300 | 322億1394万 | +0.11% |
| 03/08 | 3,610 | 3,700 | 3,610 | 3,655 | +1.67% | 28,000 | 328億8881万 | +2.15% |
| 03/07 | 3,695 | 3,695 | 3,590 | 3,595 | -1.51% | 11,200 | 323億4891万 | +0.45% |
| 03/06 | 3,580 | 3,650 | 3,580 | 3,650 | +0.83% | 9,900 | 328億4382万 | +2.18% |
| 03/05 | 3,560 | 3,645 | 3,560 | 3,620 | +0.98% | 10,800 | 325億7387万 | +1.57% |
| 03/04 | 3,655 | 3,675 | 3,555 | 3,585 | -1.92% | 16,300 | 322億5893万 | +0.96% |
| 03/01 | 3,580 | 3,670 | 3,580 | 3,655 | +2.09% | 13,100 | 328億8881万 | +3.25% |
| 02/29 | 3,585 | 3,620 | 3,580 | 3,580 | -1.1% | 4,800 | 322億1394万 | +1.56% |
| 02/28 | 3,570 | 3,640 | 3,570 | 3,620 | +0.56% | 6,800 | 325億7387万 | +3.02% |
| 02/27 | 3,550 | 3,640 | 3,530 | 3,600 | +0.84% | 20,700 | 323億9390万 | +2.86% |
| 02/26 | 3,575 | 3,600 | 3,530 | 3,570 | 0% | 13,700 | 321億2395万 | +2.41% |
| 02/22 | 3,600 | 3,600 | 3,550 | 3,570 | +0.14% | 13,100 | 321億2395万 | +2.79% |
| 02/21 | 3,570 | 3,610 | 3,560 | 3,565 | -1.38% | 11,300 | 320億7896万 | +3.03% |
| 02/20 | 3,660 | 3,660 | 3,595 | 3,615 | -1.23% | 13,800 | 325億2888万 | +4.84% |
| 02/19 | 3,585 | 3,665 | 3,580 | 3,660 | +0.41% | 14,500 | 329億3380万 | +6.58% |
| 02/16 | 3,720 | 3,750 | 3,620 | 3,645 | +4.44% | 78,700 | 327億9883万 | +6.67% |
| 02/15 | （IR情報）15:00 連結業績予想及び配当予想の修正に関するお知らせ |
| 02/15 | （IR情報）9:25 2024年3月期第3四半期報告書の提出完了に関するお知らせ |
| 02/15 | 3,555 | 3,555 | 3,465 | 3,490 | -0.14% | 17,900 | 314億409万 | +2.65% |
| 02/14 | （IR情報）20:10 2024年3月期第3四半期報告書の提出に関するお知らせ |
| 02/14 | 3,550 | 3,570 | 3,490 | 3,495 | -1.55% | 14,100 | 314億4908万 | +3.04% |
| 02/13 | 3,470 | 3,585 | 3,470 | 3,550 | +3.2% | 22,100 | 319億4399万 | +4.97% |
| 02/09 | 3,455 | 3,520 | 3,440 | 3,440 | -1.15% | 12,500 | 309億5417万 | +2.17% |
| 02/08 | 3,485 | 3,530 | 3,455 | 3,480 | -0.57% | 10,800 | 313億1411万 | +3.73% |
| 02/07 | 3,530 | 3,575 | 3,500 | 3,500 | -0.85% | 9,500 | 314億9407万 | +4.79% |
| 02/06 | 3,590 | 3,590 | 3,515 | 3,530 | -2.08% | 18,600 | 317億6402万 | +6.13% |
| 02/05 | 3,525 | 3,640 | 3,525 | 3,605 | +1.69% | 16,000 | 324億3890万 | +8.98% |
| 02/02 | 3,610 | 3,680 | 3,540 | 3,545 | -2.07% | 24,500 | 318億9900万 | +7.91% |
| 02/01 | 3,620 | 3,650 | 3,510 | 3,620 | -1.9% | 57,500 | 325億7387万 | +10.84% |
| 01/31 | （IR情報）11:30 2024年3月期第3四半期決算短信〔日本基準〕(連結) |
| 01/31 | 3,430 | 3,715 | 3,415 | 3,690 | +7.58% | 100,200 | 332億375万 | +13.89% |
| 01/30 | 3,430 | 3,490 | 3,425 | 3,430 | 0% | 16,200 | 308億6419万 | +6.79% |
| 01/29 | 3,300 | 3,435 | 3,300 | 3,430 | +4.1% | 13,100 | 308億6419万 | +7.39% |
| 01/26 | 3,325 | 3,325 | 3,280 | 3,295 | -0.9% | 10,000 | 296億4942万 | +3.78% |
| 01/25 | 3,300 | 3,340 | 3,295 | 3,325 | +1.84% | 11,900 | 299億1937万 | +5.22% |
| 01/24 | 3,330 | 3,330 | 3,265 | 3,265 | -1.21% | 7,900 | 293億7947万 | +3.85% |
| 01/23 | 3,325 | 3,325 | 3,285 | 3,305 | +0.61% | 6,200 | 297億3940万 | +5.59% |
| 01/22 | 3,260 | 3,315 | 3,260 | 3,285 | +1.08% | 8,500 | 295億5944万 | +5.39% |
| 01/19 | 3,240 | 3,295 | 3,235 | 3,250 | +0.31% | 11,100 | 292億4450万 | +4.67% |
| 01/18 | 3,225 | 3,285 | 3,220 | 3,240 | 0% | 10,500 | 291億5451万 | +4.72% |
| 01/17 | 3,280 | 3,355 | 3,240 | 3,240 | -1.22% | 18,000 | 291億5451万 | +5.09% |
| 01/16 | 3,240 | 3,280 | 3,235 | 3,280 | +0.92% | 13,600 | 295億1445万 | +6.67% |
| 01/15 | 3,230 | 3,280 | 3,215 | 3,250 | +0.62% | 15,000 | 292億4450万 | +5.93% |
| 01/12 | （5%ルール）三井化学（6.43%） |
| 01/12 | 3,250 | 3,260 | 3,185 | 3,230 | +0.16% | 11,300 | 290億6453万 | +5.62% |
| 01/11 | 3,310 | 3,330 | 3,225 | 3,225 | -1.98% | 24,600 | 290億1954万 | +5.67% |
| 01/10 | 3,265 | 3,300 | 3,235 | 3,290 | +1.23% | 20,600 | 296億443万 | +8.01% |
| 01/09 | 3,210 | 3,250 | 3,190 | 3,250 | +2.04% | 11,900 | 292億4450万 | +6.98% |
| 01/05 | 3,145 | 3,185 | 3,140 | 3,185 | +1.59% | 10,000 | 286億5961万 | +5.08% |
| 01/04 | 3,085 | 3,145 | 3,055 | 3,135 | +0.97% | 9,100 | 282億969万 | +3.53% |
| 2023 |
| 12/29 | 3,125 | 3,130 | 3,090 | 3,105 | -0.96% | 6,300 | 279億3974万 | +2.61% |
| 12/28 | 3,085 | 3,135 | 3,085 | 3,135 | +1.46% | 6,800 | 282億969万 | +3.53% |
| 12/27 | 3,040 | 3,090 | 3,040 | 3,090 | +1.81% | 12,800 | 278億477万 | +2.12% |
| 12/26 | 3,070 | 3,070 | 3,000 | 3,035 | -0.82% | 14,500 | 273億986万 | +0.26% |
| 12/25 | 3,025 | 3,065 | 3,025 | 3,060 | +2.48% | 8,200 | 275億3482万 | +1.02% |
| 12/22 | 2,995 | 3,035 | 2,981 | 2,986 | +0.2% | 15,500 | 268億6894万 | -1.55% |
| 12/21 | 2,991 | 3,010 | 2,962 | 2,980 | -0.37% | 5,600 | 268億1495万 | -1.91% |
| 12/20 | 2,930 | 3,015 | 2,930 | 2,991 | +1.73% | 6,300 | 269億1393万 | -1.74% |
| 12/19 | 2,927 | 2,940 | 2,902 | 2,940 | +0.48% | 5,100 | 264億5502万 | -3.61% |
| 12/18 | 2,917 | 2,926 | 2,879 | 2,926 | +0.03% | 7,600 | 263億2904万 | -4.29% |
| 12/15 | 2,934 | 2,945 | 2,914 | 2,925 | +0.07% | 8,400 | 263億2005万 | -4.57% |
| 12/14 | 2,964 | 2,964 | 2,900 | 2,923 | -1.18% | 13,600 | 263億205万 | -4.88% |
| 12/13 | 2,982 | 2,982 | 2,951 | 2,958 | -1.24% | 9,400 | 266億1699万 | -3.99% |
| 12/12 | 3,010 | 3,010 | 2,982 | 2,995 | +0.3% | 5,000 | 269億4993万 | -3.14% |
| 12/11 | 2,990 | 3,025 | 2,986 | 2,986 | +0.71% | 7,500 | 268億6894万 | -3.74% |
| 12/08 | 3,040 | 3,055 | 2,965 | 2,965 | -2.47% | 17,400 | 266億7998万 | -4.66% |
| 12/07 | 3,085 | 3,085 | 3,040 | 3,040 | -1.62% | 4,600 | 273億5485万 | -2.56% |
| 12/06 | 3,025 | 3,095 | 3,025 | 3,090 | +2.49% | 6,500 | 278億477万 | -1.09% |
| 12/05 | 3,070 | 3,070 | 3,015 | 3,015 | -1.79% | 8,800 | 271億2989万 | -3.58% |
| 12/04 | 3,080 | 3,105 | 3,070 | 3,070 | -0.32% | 3,800 | 276億2480万 | -2.04% |
| 12/01 | 3,100 | 3,100 | 3,080 | 3,080 | -0.16% | 5,700 | 277億1478万 | -1.79% |
| 11/30 | 3,075 | 3,100 | 3,025 | 3,085 | +0.33% | 6,100 | 277億5978万 | -1.72% |
| 11/29 | 3,085 | 3,090 | 3,075 | 3,075 | -1.13% | 4,300 | 276億6979万 | -2.04% |
| 11/28 | 3,090 | 3,110 | 3,085 | 3,110 | +0.48% | 7,700 | 279億8473万 | -0.99% |
