| 2026 |
| 01/19 | (IR情報)15:30 当社株式の上場廃止のお知らせ |
| 01/19 | 478 | 479 | 478 | 478 | 0% | 218,300 | 373億7179万 | +0.21% |
| 01/16 | 478 | 479 | 478 | 478 | 0% | 47,200 | 373億7179万 | +0.21% |
| 01/15 | 477 | 479 | 477 | 478 | +0.21% | 350,200 | 373億7179万 | +0.21% |
| 01/14 | 478 | 478 | 477 | 477 | 0% | 757,400 | 372億9361万 | 0% |
| 01/13 | 478 | 478 | 477 | 477 | -0.21% | 134,900 | 372億9361万 | 0% |
| 01/09 | 478 | 479 | 478 | 478 | 0% | 58,200 | 373億7179万 | +0.21% |
| 01/08 | 478 | 479 | 478 | 478 | 0% | 113,700 | 373億7179万 | +0.21% |
| 01/07 | 478 | 479 | 477 | 478 | 0% | 218,800 | 373億7179万 | +0.21% |
| 01/06 | 477 | 478 | 477 | 478 | +0.21% | 161,500 | 373億7179万 | +0.21% |
| 01/05 | 476 | 477 | 476 | 477 | +0.21% | 226,500 | 372億9361万 | 0% |
| 2025 |
| 12/30 | 476 | 477 | 476 | 476 | 0% | 129,400 | 372億1543万 | -0.21% |
| 12/29 | 476 | 477 | 476 | 476 | 0% | 112,600 | 372億1543万 | -0.21% |
| 12/26 | 476 | 477 | 476 | 476 | 0% | 73,900 | 372億1543万 | -0.21% |
| 12/25 | 477 | 478 | 476 | 476 | -0.21% | 406,700 | 372億1543万 | -0.21% |
| 12/24 | 477 | 478 | 477 | 477 | 0% | 427,300 | 372億9361万 | 0% |
| 12/23 | 477 | 478 | 477 | 477 | -0.21% | 413,500 | 372億9361万 | 0% |
| 12/22 | (IR情報)15:30 株式併合並びに単元株式数の定めの廃止及び定款の一部変更に係る承認決議に関するお知らせ |
| 12/22 | 477 | 478 | 477 | 478 | +0.21% | 69,100 | 373億7179万 | +0.21% |
| 12/19 | 477 | 478 | 477 | 477 | 0% | 81,400 | 372億9361万 | 0% |
| 12/18 | 477 | 478 | 477 | 477 | 0% | 122,600 | 372億9361万 | 0% |
| 12/17 | 477 | 478 | 477 | 477 | 0% | 105,200 | 372億9361万 | 0% |
| 12/16 | 477 | 478 | 477 | 477 | 0% | 200,400 | 372億9361万 | 0% |
| 12/15 | 477 | 478 | 477 | 477 | 0% | 163,000 | 372億9361万 | 0% |
| 12/12 | 477 | 478 | 477 | 477 | 0% | 222,100 | 372億9361万 | 0% |
| 12/11 | 477 | 478 | 477 | 477 | 0% | 160,900 | 372億9361万 | +0.21% |
| 12/10 | 477 | 478 | 477 | 477 | 0% | 140,200 | 372億9361万 | +0.21% |
| 12/09 | 477 | 478 | 477 | 477 | 0% | 217,800 | 372億9361万 | +0.21% |
| 12/08 | 477 | 478 | 477 | 477 | 0% | 157,600 | 372億9361万 | +0.21% |
| 12/05 | 477 | 478 | 477 | 477 | 0% | 119,300 | 372億9361万 | +0.21% |
| 12/04 | 477 | 478 | 477 | 477 | 0% | 131,900 | 372億9361万 | +0.21% |
| 12/03 | 477 | 478 | 477 | 477 | 0% | 201,600 | 372億9361万 | +0.21% |
| 12/02 | 478 | 478 | 477 | 477 | 0% | 164,700 | 372億9361万 | +0.21% |
| 12/01 | 477 | 478 | 477 | 477 | 0% | 118,900 | 372億9361万 | +0.21% |
| 11/28 | 477 | 478 | 477 | 477 | +0.21% | 378,300 | 372億9361万 | +0.21% |
| 11/27 | 477 | 478 | 476 | 476 | -0.21% | 1,881,400 | 372億1543万 | -0.21% |
| 11/26 | 478 | 478 | 477 | 477 | 0% | 160,800 | 372億9361万 | 0% |
| 11/25 | 477 | 478 | 477 | 477 | +0.21% | 286,700 | 372億9361万 | 0% |
| 11/21 | 476 | 478 | 476 | 476 | 0% | 404,800 | 372億1543万 | -0.21% |
| 11/20 | 476 | 477 | 476 | 476 | 0% | 146,400 | 372億1543万 | -0.21% |
| 11/19 | 476 | 477 | 476 | 476 | 0% | 198,800 | 372億1543万 | -0.21% |
| 11/18 | 477 | 477 | 476 | 476 | 0% | 380,500 | 372億1543万 | -0.21% |
| 11/17 | 476 | 477 | 476 | 476 | 0% | 262,900 | 372億1543万 | -0.21% |
| 11/14 | 476 | 477 | 476 | 476 | 0% | 372,400 | 372億1543万 | -0.42% |
| 11/13 | 476 | 477 | 476 | 476 | 0% | 377,400 | 372億1543万 | -0.42% |
| 11/12 | 476 | 477 | 476 | 476 | 0% | 299,500 | 372億1543万 | -0.42% |
| 11/11 | 476 | 477 | 476 | 476 | 0% | 594,100 | 372億1543万 | -0.42% |
| 11/10 | (IR情報)18:15 自己株式の消却に関するお知らせ |
| 11/10 | (IR情報)18:15 株式併合並びに単元株式数の定めの廃止及び定款の一部変更に関するお知らせ |
| 11/10 | (IR情報)18:15 2026年3月期第2四半期決算補足資料 |
| 11/10 | (IR情報)18:15 2026年3月期第2四半期(中間期)決算短信〔日本基準〕(連結) |
| 11/10 | 476 | 477 | 476 | 476 | 0% | 155,600 | 372億1543万 | -0.42% |
| 11/07 | 477 | 477 | 476 | 476 | 0% | 281,100 | 372億1543万 | -0.42% |
| 11/06 | 476 | 477 | 476 | 476 | 0% | 181,500 | 372億1543万 | -0.63% |
| 11/05 | (5%ルール)クウェート石油公社(Kuwait Petroleum Corporation)(0%) |
| 11/05 | (5%ルール)出光興産(74.12%)サウジアラビア王国(Kingdom of Saudi Arabia)(7.43%) |
| 11/05 | 477 | 477 | 476 | 476 | 0% | 109,200 | 372億1543万 | -0.63% |
| 11/04 | 477 | 478 | 476 | 476 | 0% | 314,900 | 372億1543万 | -0.63% |
| 10/31 | 477 | 478 | 476 | 476 | 0% | 599,800 | 372億1543万 | -0.63% |
| 10/30 | 476 | 477 | 475 | 476 | 0% | 1,349,500 | 372億1543万 | -0.83% |
| 10/29 | (IR情報)11:30 出光興産株式会社による当社株式に対する公開買付けの結果並びに親会社及びその他の関係会社の異動に関するお知らせ |
| 10/29 | 477 | 478 | 475 | 476 | -0.21% | 1,106,600 | 372億1543万 | -0.83% |
| 10/28 | 478 | 479 | 477 | 477 | -0.21% | 951,500 | 372億9361万 | -0.83% |
| 10/27 | 478 | 479 | 478 | 478 | -0.21% | 236,300 | 373億7179万 | -0.83% |
| 10/24 | 479 | 480 | 478 | 479 | 0% | 1,816,400 | 374億4998万 | -0.83% |
| 10/23 | 479 | 479 | 478 | 479 | -0.21% | 1,097,200 | 374億4998万 | -1.03% |
| 10/23 | (空売り報告)J.P. MORGAN SECURITIES PLC 34,000株(0.04%)-0.46%義務消失 |
| 10/22 | 479 | 480 | 479 | 480 | 0% | 575,000 | 375億2816万 | -0.83% |
| 10/21 | 479 | 480 | 479 | 480 | +0.21% | 518,800 | 375億2816万 | -0.21% |
| 10/21 | (空売り報告)Morgan Stanley & Co. International plc 0株(0%)-0.55%義務消失 |
| 10/20 | 479 | 480 | 478 | 479 | -0.21% | 1,190,000 | 374億4998万 | +0.63% |
| 10/20 | (空売り報告)Morgan Stanley & Co. International plc 436,308株(0.55%)再IN |
| 10/17 | 479 | 480 | 478 | 480 | +0.42% | 660,000 | 375億2816万 | +2.13% |
| 10/16 | 479 | 480 | 478 | 478 | -0.21% | 1,011,900 | 373億7179万 | +3.02% |
| 10/15 | 479 | 480 | 478 | 479 | 0% | 2,127,800 | 374億4998万 | +4.59% |
| 10/15 | (空売り報告)モルガン・スタンレーMUFG証券 257,783株(0.32%)-0.59%義務消失 |
| 10/14 | 479 | 480 | 479 | 479 | 0% | 629,300 | 374億4998万 | +5.74% |
| 10/14 | (空売り報告)J.P. MORGAN SECURITIES PLC 392,400株(0.5%)新規 |
| 10/10 | (IR情報)15:30 臨時株主総会招集のための基準日設定に関するお知らせ |
| 10/10 | 479 | 480 | 479 | 479 | 0% | 445,000 | 374億4998万 | +7.16% |
| 10/09 | 480 | 481 | 479 | 479 | -0.21% | 1,089,100 | 374億4998万 | +8.37% |
| 10/08 | 480 | 481 | 479 | 480 | -0.21% | 762,200 | 375億2816万 | +10.09% |
| 10/08 | (空売り報告)モルガン・スタンレーMUFG証券 712,683株(0.91%)+0.05% |
| 10/07 | 481 | 482 | 480 | 481 | +0.21% | 818,200 | 376億634万 | +11.6% |
| 10/06 | 482 | 482 | 479 | 480 | -0.21% | 1,453,800 | 375億2816万 | +12.94% |
| 10/06 | (空売り報告)モルガン・スタンレーMUFG証券 673,783株(0.86%)+0.07% |
| 10/03 | 481 | 483 | 481 | 481 | 0% | 720,200 | 376億634万 | +14.8% |
| 10/03 | (空売り報告)モルガン・スタンレーMUFG証券 624,183株(0.79%)-0.06% |
| 10/02 | 481 | 483 | 480 | 481 | -0.41% | 597,200 | 376億634万 | +16.46% |
| 10/02 | (空売り報告)モルガン・スタンレーMUFG証券 667,383株(0.85%)+0.12% |
| 10/01 | 480 | 485 | 480 | 483 | +0.63% | 1,318,900 | 377億6271万 | +18.38% |
| 09/30 | 481 | 482 | 479 | 480 | -0.21% | 1,690,400 | 375億2816万 | +19.4% |
| 09/30 | (空売り報告)モルガン・スタンレーMUFG証券 573,083株(0.73%)+0.1% |
| 09/29 | 483 | 483 | 480 | 481 | -0.62% | 1,473,900 | 376億634万 | +21.16% |
| 09/26 | 485 | 487 | 482 | 484 | -0.62% | 1,590,900 | 378億4089万 | +23.79% |
| 09/25 | 486 | 490 | 485 | 487 | -0.41% | 902,300 | 380億7545万 | +26.82% |
| 09/24 | 489 | 494 | 483 | 489 | -0.81% | 1,726,400 | 382億3181万 | +29.71% |
| 09/22 | 494 | 495 | 491 | 493 | -0.8% | 886,200 | 385億4455万 | +32.88% |
| 09/19 | (5%ルール)出光興産(21.79%)サウジアラビア王国(Kingdom of Saudi Arabia)(7.43%) |
| 09/19 | 494 | 498 | 493 | 497 | 0% | 1,786,200 | 388億5728万 | +36.54% |
| 09/19 | (空売り報告)モルガン・スタンレーMUFG証券 499,683株(0.63%)+0.07% |
| 09/18 | 499 | 501 | 492 | 497 | -1% | 2,187,800 | 388億5728万 | +38.83% |
| 09/18 | (空売り報告)モルガン・スタンレーMUFG証券 440,983株(0.56%)再IN |
| 09/17 | 497 | 524 | 497 | 502 | +1.83% | 6,546,300 | 392億4820万 | +43.02% |
| 09/16 | 489 | 493 | 489 | 493 | +19.37% | 4,964,200 | 385億4455万 | +43.31% |
| 09/12 | 413 | 413 | 413 | 413 | +24.02% | 221,200 | 322億8985万 | +22.55% |
| 09/11 | (IR情報)16:00 その他の関係会社である出光興産株式会社による当社株式に対する公開買付けに関する賛同の意見表明及び応募推奨のお知らせ |
| 09/11 | (IR情報)16:00 2026年3月期配当予想の修正(無配)に関するお知らせ |
| 09/11 | 330 | 336 | 329 | 333 | +0.3% | 322,700 | 260億3516万 | -0.3% |
| 09/10 | 332 | 338 | 331 | 332 | -0.6% | 323,900 | 259億5698万 | -0.6% |
| 09/09 | 342 | 343 | 333 | 334 | -2.91% | 433,200 | 261億1334万 | 0% |
| 09/08 | 346 | 347 | 340 | 344 | +0.29% | 309,200 | 268億9518万 | +2.69% |
| 09/05 | 340 | 344 | 337 | 343 | +0.88% | 258,500 | 268億1700万 | +2.39% |
| 09/04 | 337 | 341 | 334 | 340 | 0% | 349,500 | 265億8245万 | +1.8% |
| 09/03 | 345 | 348 | 340 | 340 | -0.29% | 659,600 | 265億8245万 | +1.8% |
| 09/02 | 334 | 344 | 334 | 341 | +1.49% | 340,800 | 266億6063万 | +2.4% |
| 09/01 | 333 | 338 | 332 | 336 | +0.6% | 209,700 | 262億6971万 | +1.2% |
| 08/29 | 338 | 340 | 334 | 334 | -0.89% | 246,000 | 261億1334万 | +0.6% |
| 08/28 | 336 | 343 | 335 | 337 | -0.3% | 295,500 | 263億4789万 | +1.81% |
| 08/27 | 341 | 347 | 337 | 338 | -2.03% | 438,900 | 264億2608万 | +2.42% |
| 08/26 | 347 | 349 | 342 | 345 | -0.58% | 649,000 | 269億7336万 | +4.86% |
| 08/25 | 347 | 347 | 340 | 347 | +1.46% | 688,400 | 271億2973万 | +5.79% |
| 08/22 | 330 | 342 | 328 | 342 | +4.59% | 947,400 | 267億3881万 | +4.91% |
| 08/21 | 319 | 327 | 317 | 327 | +2.19% | 569,300 | 255億6606万 | +0.62% |
| 08/20 | 319 | 326 | 318 | 320 | +0.31% | 439,400 | 250億1877万 | -1.54% |