| 2024 |
| 04/22 | 4,466 | 4,477 | 4,394 | 4,433 | +0.52% | 531,600 | 8903億4063万 | -0.14% |
| 04/19 | 4,485 | 4,485 | 4,316 | 4,410 | -1.98% | 792,100 | 8857億2122万 | -0.5% |
| 04/18 | 4,459 | 4,533 | 4,454 | 4,499 | +0.81% | 521,000 | 9035億9632万 | +1.65% |
| 04/17 | 4,511 | 4,525 | 4,446 | 4,463 | +0.16% | 626,400 | 8963億6594万 | +1.11% |
| 04/16 | 4,515 | 4,547 | 4,456 | 4,456 | -1.83% | 643,400 | 8949億6003万 | +1.23% |
| 04/15 | 4,485 | 4,554 | 4,464 | 4,539 | +0.4% | 392,400 | 9116億3007万 | +3.39% |
| 04/12 | 4,550 | 4,563 | 4,494 | 4,521 | -0.35% | 429,000 | 9080億1488万 | +3.24% |
| 04/11 | 4,480 | 4,538 | 4,452 | 4,537 | -0.04% | 556,800 | 9112億2838万 | +3.92% |
| 04/10 | 4,520 | 4,600 | 4,510 | 4,539 | +1.11% | 762,000 | 9116億3007万 | +4.23% |
| 04/09 | 4,490 | 4,545 | 4,486 | 4,489 | +0.58% | 650,600 | 9015億8788万 | +3.41% |
| 04/08 | 4,430 | 4,483 | 4,422 | 4,463 | +1.11% | 439,800 | 8963億6594万 | +3.05% |
| 04/05 | 4,344 | 4,422 | 4,323 | 4,414 | +0.59% | 721,300 | 8865億2459万 | +2.08% |
| 04/04 | 4,339 | 4,420 | 4,316 | 4,388 | +1.95% | 791,300 | 8813億266万 | +1.74% |
| 04/03 | 4,177 | 4,325 | 4,145 | 4,304 | +2.94% | 835,800 | 8644億3177万 | +0.02% |
| 04/02 | 4,159 | 4,181 | 4,106 | 4,181 | +0.7% | 1,240,200 | 8397億2799万 | -2.77% |
| 04/01 | 4,277 | 4,277 | 4,092 | 4,152 | -4.13% | 1,704,800 | 8339億351万 | -3.44% |
| 03/29 | 4,408 | 4,423 | 4,318 | 4,331 | -2.15% | 1,487,000 | 8698億5456万 | +0.74% |
| 03/28 | 4,508 | 4,558 | 4,411 | 4,426 | -2.34% | 995,900 | 8889億3472万 | +3.24% |
| 03/27 | （IR情報）13:30 「千葉地区エチレン装置集約による生産最適化」の検討開始について |
| 03/27 | 4,480 | 4,568 | 4,445 | 4,532 | +1.73% | 1,259,600 | 9102億2416万 | +6.09% |
| 03/26 | 4,450 | 4,477 | 4,419 | 4,455 | +0.16% | 575,000 | 8947億5919万 | +4.75% |
| 03/25 | 4,540 | 4,545 | 4,444 | 4,448 | -2.03% | 644,600 | 8933億5328万 | +5.05% |
| 03/22 | 4,535 | 4,597 | 4,520 | 4,540 | 0% | 758,400 | 9118億3092万 | +7.71% |
| 03/21 | 4,544 | 4,589 | 4,506 | 4,540 | +0.04% | 1,095,300 | 9118億3092万 | +8.3% |
| 03/19 | 4,452 | 4,549 | 4,429 | 4,538 | +3.56% | 1,066,100 | 9114億2923万 | +8.8% |
| 03/18 | 4,307 | 4,409 | 4,275 | 4,382 | +2.84% | 718,000 | 8800億9759万 | +5.64% |
| 03/15 | 4,217 | 4,292 | 4,210 | 4,261 | +0.09% | 840,900 | 8557億9549万 | +3.1% |
| 03/14 | 4,165 | 4,285 | 4,165 | 4,257 | +1.77% | 1,327,300 | 8549億9212万 | +3.1% |
| 03/13 | 4,195 | 4,249 | 4,145 | 4,183 | +0.02% | 1,098,300 | 8401億2967万 | +1.23% |
| 03/12 | 4,112 | 4,182 | 4,050 | 4,182 | +0.7% | 750,100 | 8399億2883万 | +1.01% |
| 03/11 | 4,245 | 4,245 | 4,113 | 4,153 | -2.63% | 686,700 | 8341億436万 | +0.17% |
| 03/08 | 4,189 | 4,295 | 4,188 | 4,265 | +1.67% | 791,100 | 8565億9887万 | +2.67% |
| 03/07 | 4,260 | 4,302 | 4,192 | 4,195 | -1.29% | 636,100 | 8425億3980万 | +0.87% |
| 03/06 | 4,164 | 4,258 | 4,154 | 4,250 | +1.58% | 712,800 | 8535億8621万 | +2.07% |
| 03/05 | （5%ルール）ブラックロック(ネザーランド)BV(BlackRock (Neth…（0.23%）ブラックロック・アセット・マネジメント・アイルラ…（0.78%）ブラックロック・アセット・マネジメント・カナダ・…（0.14%）ブラックロック・インスティテューショナル・トラス…（1.18%）ブラックロック・インベストメント・マネジメント(…（0.09%）ブラックロック・インベストメント・マネジメント・…（0.1%）ブラックロック・ジャパン（1.81%）ブラックロック・ファンド・アドバイザーズ(Black…（1.75%）ブラックロック・ファンド・マネジャーズ・リミテッ…（0.21%） |
| 03/05 | 4,220 | 4,232 | 4,174 | 4,184 | -1.65% | 635,200 | 8403億3052万 | +0.36% |
| 03/04 | 4,320 | 4,339 | 4,254 | 4,254 | -0.47% | 1,028,500 | 8543億8958万 | +1.92% |
| 03/01 | 4,200 | 4,305 | 4,182 | 4,274 | +3.04% | 1,249,600 | 8584億646万 | +2.25% |
| 02/29 | 4,119 | 4,179 | 4,090 | 4,148 | +0.1% | 1,135,000 | 8331億14万 | -0.84% |
| 02/28 | 4,214 | 4,219 | 4,108 | 4,144 | -1.78% | 843,600 | 8322億9676万 | -1.22% |
| 02/27 | 4,176 | 4,252 | 4,156 | 4,219 | +0.86% | 976,800 | 8473億6005万 | +0.26% |
| 02/26 | 4,199 | 4,213 | 4,147 | 4,183 | +1.55% | 1,003,600 | 8401億2967万 | -0.76% |
| 02/22 | 4,110 | 4,178 | 4,090 | 4,119 | +1.96% | 1,087,300 | 8272億7567万 | -2.42% |
| 02/21 | 4,045 | 4,073 | 4,018 | 4,040 | -0.27% | 512,500 | 8114億901万 | -4.47% |
| 02/20 | 4,060 | 4,072 | 4,025 | 4,051 | -0.39% | 705,500 | 8136億1829万 | -4.55% |
| 02/19 | 3,993 | 4,074 | 3,982 | 4,067 | +2.06% | 633,500 | 8168億3179万 | -4.51% |
| 02/16 | 3,980 | 4,021 | 3,962 | 3,985 | +0.5% | 850,100 | 8003億6260万 | -6.72% |
| 02/15 | 3,995 | 3,995 | 3,922 | 3,965 | +0.13% | 761,800 | 7963億4572万 | -7.55% |
| 02/14 | 4,010 | 4,014 | 3,924 | 3,960 | -1.54% | 883,800 | 7953億4150万 | -7.97% |
| 02/13 | 3,942 | 4,022 | 3,885 | 4,022 | +1.77% | 1,613,500 | 8077億9382万 | -6.86% |
| 02/09 | 3,970 | 4,033 | 3,916 | 3,952 | -1.74% | 2,446,500 | 7937億3475万 | -8.75% |
| 02/08 | （IR情報）15:00 当社連結子会社による株式の承継(孫会社化)及び特定子会社の異動に関するお知らせ |
| 02/08 | （IR情報）15:00 (訂正・数値データ訂正)「2024年3月期第3四半期決算短信[IFRS](連結)」の一部訂正について |
| 02/08 | 4,203 | 4,212 | 4,022 | 4,022 | -3.08% | 2,122,500 | 8077億9382万 | -7.43% |
| 02/07 | （IR情報）13:00 2023年度第3四半期決算の概要及び2023年度業績予想の概要 |
| 02/07 | （IR情報）13:00 通期業績予想の修正に関するお知らせ |
| 02/07 | （IR情報）13:00 2024年3月期第3四半期決算短信[IFRS](連結) |
| 02/07 | 4,311 | 4,429 | 4,081 | 4,150 | -4.2% | 2,888,000 | 8335億183万 | -4.64% |
| 02/06 | （5%ルール）ノムラインターナショナルピーエルシー(NOMURA IN…（0.02%）野村アセットマネジメント（6.29%）野村證券（0.14%） |
| 02/06 | 4,365 | 4,365 | 4,309 | 4,332 | -1.07% | 512,800 | 8700億5540万 | -0.53% |
| 02/05 | 4,395 | 4,395 | 4,333 | 4,379 | +0.81% | 472,300 | 8794億9506万 | +0.64% |
| 02/02 | 4,374 | 4,380 | 4,311 | 4,344 | -0.21% | 473,800 | 8724億6553万 | +0.02% |
| 02/01 | 4,327 | 4,359 | 4,305 | 4,353 | -0.48% | 460,900 | 8742億7312万 | +0.39% |
| 01/31 | 4,287 | 4,379 | 4,280 | 4,374 | +0.97% | 480,600 | 8784億9084万 | +0.97% |
| 01/30 | 4,355 | 4,364 | 4,329 | 4,332 | -1.01% | 318,300 | 8700億5540万 | +0.12% |
| 01/29 | 4,331 | 4,382 | 4,313 | 4,376 | +1.53% | 413,300 | 8788億9253万 | +1.16% |
| 01/26 | 4,368 | 4,372 | 4,296 | 4,310 | -2% | 624,500 | 8656億3684万 | -0.16% |
| 01/25 | 4,366 | 4,405 | 4,357 | 4,398 | +1.1% | 489,800 | 8833億1109万 | +2.04% |
| 01/24 | 4,419 | 4,438 | 4,343 | 4,350 | -2.09% | 575,200 | 8736億7059万 | +1.09% |
| 01/23 | 4,470 | 4,497 | 4,438 | 4,443 | -0.45% | 504,000 | 8923億4907万 | +3.45% |
| 01/22 | 4,450 | 4,468 | 4,441 | 4,463 | +1.36% | 625,100 | 8963億6594万 | +4.15% |
| 01/19 | 4,409 | 4,422 | 4,358 | 4,403 | +1.83% | 838,400 | 8843億1531万 | +3.02% |
| 01/18 | 4,301 | 4,339 | 4,289 | 4,324 | +0.05% | 568,000 | 8684億4865万 | +1.38% |
| 01/17 | 4,425 | 4,458 | 4,322 | 4,322 | -2.04% | 693,500 | 8680億4696万 | +1.48% |
| 01/16 | 4,422 | 4,441 | 4,399 | 4,412 | -0.65% | 385,600 | 8861億2291万 | +3.64% |
| 01/15 | 4,390 | 4,480 | 4,380 | 4,441 | +0.95% | 629,800 | 8919億4738万 | +4.42% |
| 01/12 | 4,493 | 4,493 | 4,363 | 4,399 | -0.18% | 562,700 | 8835億1194万 | +3.65% |
| 01/11 | 4,375 | 4,450 | 4,359 | 4,407 | +2.11% | 932,700 | 8851億1869万 | +3.99% |
| 01/10 | 4,321 | 4,348 | 4,283 | 4,316 | -0.12% | 583,200 | 8668億4190万 | +1.98% |
| 01/09 | 4,368 | 4,413 | 4,297 | 4,321 | -0.85% | 763,600 | 8678億4612万 | +2.1% |
| 01/05 | 4,295 | 4,379 | 4,295 | 4,358 | +1.18% | 782,400 | 8752億7734万 | +2.93% |
| 01/04 | 4,173 | 4,310 | 4,150 | 4,307 | +2.99% | 773,800 | 8650億3431万 | +1.77% |
| 2023 |
| 12/29 | 4,242 | 4,251 | 4,166 | 4,182 | -1.13% | 385,100 | 8399億2883万 | -1.18% |
| 12/28 | 4,224 | 4,256 | 4,207 | 4,230 | +0.09% | 279,000 | 8495億6933万 | -0.17% |
| 12/27 | 4,221 | 4,259 | 4,210 | 4,226 | +0.86% | 635,800 | 8487億6596万 | -0.26% |
| 12/26 | 4,238 | 4,250 | 4,183 | 4,190 | +0.38% | 518,300 | 8415億3558万 | -1.02% |
| 12/25 | 4,279 | 4,282 | 4,157 | 4,174 | -1.67% | 535,600 | 8383億2208万 | -1.3% |
| 12/22 | 4,250 | 4,296 | 4,218 | 4,245 | +0.26% | 700,800 | 8525億8199万 | +0.4% |
| 12/21 | （5%ルール）ノムラインターナショナルピーエルシー(NOMURA IN…（0%）野村アセットマネジメント（6.24%）野村證券（0.28%） |
| 12/21 | （5%ルール）三井住友トラスト・アセットマネジメント（2.66%）三井住友信託銀行（0.35%）日興アセットマネジメント（2.36%） |
| 12/21 | 4,270 | 4,293 | 4,218 | 4,234 | -1.76% | 616,300 | 8503億7271万 | +0.33% |
| 12/20 | 4,180 | 4,337 | 4,177 | 4,310 | +3.78% | 968,100 | 8656億3684万 | +2.28% |
| 12/19 | 4,127 | 4,153 | 4,075 | 4,153 | +0.12% | 513,500 | 8341億436万 | -1.19% |
| 12/18 | 4,205 | 4,205 | 4,110 | 4,148 | -1.57% | 587,600 | 8331億14万 | -1.17% |
| 12/15 | 4,138 | 4,249 | 4,134 | 4,214 | +1.27% | 725,200 | 8463億5583万 | +0.55% |
| 12/14 | 4,165 | 4,227 | 4,153 | 4,161 | -0.5% | 996,200 | 8357億1111万 | -0.41% |
| 12/13 | 4,217 | 4,217 | 4,161 | 4,182 | -0.02% | 715,600 | 8399億2883万 | +0.36% |
| 12/12 | 4,212 | 4,232 | 4,161 | 4,183 | -0.17% | 802,600 | 8401億2967万 | +0.65% |
| 12/11 | 4,190 | 4,230 | 4,166 | 4,190 | +0.77% | 562,500 | 8415億3558万 | +1.06% |
| 12/08 | 4,224 | 4,260 | 4,128 | 4,158 | -3.17% | 1,082,500 | 8351億858万 | +0.6% |
| 12/07 | 4,307 | 4,342 | 4,285 | 4,294 | -0.3% | 693,200 | 8624億2334万 | +4.22% |
| 12/06 | （5%ルール）三井住友トラスト・アセットマネジメント（2.65%）三井住友信託銀行（0.35%）日興アセットマネジメント（2.34%） |
| 12/06 | 4,241 | 4,315 | 4,237 | 4,307 | +2.04% | 632,900 | 8650億3431万 | +5.07% |
| 12/05 | 4,223 | 4,263 | 4,208 | 4,221 | -0.64% | 546,300 | 8477億6174万 | +3.58% |
| 12/04 | 4,251 | 4,265 | 4,208 | 4,248 | +0.07% | 549,500 | 8531億8452万 | +4.66% |
| 12/01 | 4,327 | 4,332 | 4,213 | 4,245 | -1.92% | 1,413,800 | 8525億8199万 | +5.2% |
| 11/30 | 4,301 | 4,349 | 4,300 | 4,328 | -0.53% | 1,217,900 | 8692億5203万 | +7.88% |
| 11/29 | 4,335 | 4,365 | 4,303 | 4,351 | +0.69% | 770,000 | 8738億7143万 | +9.21% |
| 11/28 | 4,321 | 4,362 | 4,302 | 4,321 | +0.35% | 751,700 | 8678億4612万 | +9.28% |
| 11/27 | 4,366 | 4,423 | 4,302 | 4,306 | +0.02% | 1,081,000 | 8648億3346万 | +9.62% |
| 11/24 | 4,280 | 4,345 | 4,239 | 4,305 | +1.6% | 1,224,500 | 8646億3262万 | +10.27% |
