| 2026 |
| 01/27 | 406 | 411 | 405 | 408 | -0.97% | 276,400 | 132億7346万 | -2.39% |
| 01/26 | 410 | 413 | 406 | 412 | -0.48% | 81,600 | 134億359万 | -1.67% |
| 01/23 | 416 | 421 | 413 | 414 | +0.24% | 84,600 | 134億6866万 | -1.19% |
| 01/22 | 409 | 417 | 409 | 413 | +0.98% | 89,300 | 134億3612万 | -1.43% |
| 01/21 | 406 | 410 | 399 | 409 | 0% | 145,300 | 133億599万 | -2.39% |
| 01/20 | (IR情報)15:00 自己株式の消却に関するお知らせ |
| 01/20 | 419 | 419 | 409 | 409 | -1.92% | 167,400 | 133億599万 | -2.39% |
| 01/19 | 433 | 433 | 408 | 417 | -4.36% | 204,700 | 135億6626万 | -0.71% |
| 01/16 | (IR情報)18:45 (開示事項の経過)住友化学株式会社と株式会社田中化学研究所の簡易株式交換における株式交換比率の決定に関するお知らせ |
| 01/16 | 431 | 438 | 430 | 436 | +1.16% | 241,200 | 141億8438万 | +3.81% |
| 01/15 | 425 | 431 | 424 | 431 | +1.65% | 267,200 | 140億2172万 | +2.86% |
| 01/14 | 422 | 425 | 422 | 424 | +0.47% | 973,500 | 137億9399万 | +1.44% |
| 01/13 | 423 | 423 | 422 | 422 | 0% | 163,300 | 137億2892万 | +0.96% |
| 01/09 | 422 | 423 | 422 | 422 | 0% | 427,800 | 137億2892万 | +0.96% |
| 01/08 | 421 | 422 | 421 | 422 | 0% | 84,500 | 137億2892万 | +1.2% |
| 01/07 | 421 | 422 | 421 | 422 | +0.24% | 96,200 | 137億2892万 | +1.2% |
| 01/06 | 421 | 422 | 420 | 421 | +0.24% | 105,500 | 136億9639万 | +0.96% |
| 01/05 | 421 | 422 | 420 | 420 | -0.24% | 370,600 | 136億6386万 | +0.96% |
| 2025 |
| 12/30 | 420 | 421 | 420 | 421 | +0.24% | 57,400 | 136億9639万 | +1.2% |
| 12/29 | 419 | 420 | 419 | 420 | +0.24% | 112,900 | 136億6386万 | +0.96% |
| 12/26 | 418 | 419 | 418 | 419 | +0.24% | 129,100 | 136億3132万 | +0.72% |
| 12/25 | 417 | 419 | 417 | 418 | +0.24% | 172,900 | 135億9879万 | +0.72% |
| 12/24 | 416 | 417 | 416 | 417 | 0% | 116,600 | 135億6626万 | +0.48% |
| 12/23 | 416 | 417 | 416 | 417 | +0.24% | 182,600 | 135億6626万 | +0.48% |
| 12/22 | 416 | 417 | 416 | 416 | 0% | 97,400 | 135億3372万 | +0.24% |
| 12/19 | 416 | 417 | 416 | 416 | 0% | 100,200 | 135億3372万 | +0.24% |
| 12/18 | 416 | 417 | 416 | 416 | 0% | 90,000 | 135億3372万 | +0.24% |
| 12/17 | 416 | 417 | 416 | 416 | 0% | 30,400 | 135億3372万 | +0.24% |
| 12/16 | 416 | 417 | 416 | 416 | 0% | 205,200 | 135億3372万 | +0.24% |
| 12/15 | 416 | 417 | 416 | 416 | 0% | 102,300 | 135億3372万 | +0.24% |
| 12/12 | 416 | 417 | 416 | 416 | 0% | 84,900 | 135億3372万 | +0.24% |
| 12/11 | 416 | 417 | 416 | 416 | 0% | 98,900 | 135億3372万 | +0.24% |
| 12/10 | 416 | 417 | 416 | 416 | +0.24% | 45,800 | 135億3372万 | +0.24% |
| 12/09 | 417 | 417 | 415 | 415 | 0% | 92,300 | 135億119万 | 0% |
| 12/08 | 416 | 417 | 415 | 415 | 0% | 86,300 | 135億119万 | 0% |
| 12/05 | 415 | 417 | 415 | 415 | 0% | 74,000 | 135億119万 | -0.24% |
| 12/04 | 415 | 416 | 415 | 415 | 0% | 39,900 | 135億119万 | -0.24% |
| 12/03 | 415 | 416 | 415 | 415 | -0.24% | 132,900 | 135億119万 | -0.24% |
| 12/02 | 416 | 416 | 414 | 416 | +0.24% | 79,600 | 135億3372万 | 0% |
| 12/01 | 416 | 416 | 414 | 415 | +0.24% | 61,600 | 135億119万 | -0.24% |
| 11/28 | 414 | 416 | 414 | 414 | 0% | 178,800 | 134億6866万 | -0.48% |
| 11/27 | 414 | 415 | 414 | 414 | 0% | 48,400 | 134億6866万 | -0.48% |
| 11/26 | 414 | 415 | 414 | 414 | 0% | 64,300 | 134億6866万 | -0.24% |
| 11/25 | 415 | 415 | 414 | 414 | 0% | 83,200 | 134億6866万 | 0% |
| 11/21 | 414 | 415 | 414 | 414 | 0% | 27,400 | 134億6866万 | +0.24% |
| 11/20 | 414 | 415 | 414 | 414 | +0.24% | 162,800 | 134億6866万 | +0.49% |
| 11/19 | 413 | 414 | 413 | 413 | 0% | 54,300 | 134億3612万 | +0.49% |
| 11/18 | 414 | 415 | 413 | 413 | -0.24% | 220,300 | 134億3612万 | +0.98% |
| 11/18 | (空売り報告)Barclays Capital Securities Ltd 154,411株(0.47%)-0.03%義務消失 |
| 11/17 | 415 | 417 | 414 | 414 | -0.72% | 125,500 | 134億6866万 | +1.47% |
| 11/17 | (空売り報告)Barclays Capital Securities Ltd 163,011株(0.5%)再IN |
| 11/14 | 415 | 417 | 415 | 417 | +0.48% | 53,200 | 135億6626万 | +2.46% |
| 11/13 | 417 | 418 | 415 | 415 | -0.48% | 271,400 | 135億119万 | +1.97% |
| 11/12 | 416 | 417 | 416 | 417 | +0.24% | 129,200 | 135億6626万 | +2.71% |
| 11/11 | 417 | 417 | 416 | 416 | 0% | 93,900 | 135億3372万 | +2.72% |
| 11/10 | 417 | 418 | 416 | 416 | 0% | 210,200 | 135億3372万 | +2.97% |
| 11/07 | 416 | 418 | 416 | 416 | -0.24% | 77,400 | 135億3372万 | +3.23% |
| 11/06 | 419 | 419 | 416 | 417 | 0% | 125,500 | 135億6626万 | +3.47% |
| 11/05 | 418 | 420 | 416 | 417 | -0.24% | 119,100 | 135億6626万 | +3.73% |
| 11/04 | 417 | 420 | 417 | 418 | -0.24% | 187,200 | 135億9879万 | +4.24% |
| 11/04 | (空売り報告)GOLDMAN SACHS INTERNATIONAL 155,835株(0.47%)-0.13%義務消失 |
| 10/31 | 420 | 423 | 417 | 419 | -0.24% | 225,500 | 136億3132万 | +4.49% |
| 10/31 | (空売り報告)Nomura International plc 155,066株(0.47%)-0.1%義務消失 |
| 10/31 | (空売り報告)GOLDMAN SACHS INTERNATIONAL 196,035株(0.6%)-0.12% |
| 10/30 | 417 | 424 | 417 | 420 | +0.72% | 389,700 | 136億6386万 | +5% |
| 10/30 | (空売り報告)GOLDMAN SACHS INTERNATIONAL 237,435株(0.72%)-0.12% |
| 10/29 | 410 | 419 | 407 | 417 | -2.11% | 741,000 | 135億6626万 | +4.51% |
| 10/29 | (空売り報告)Nomura International plc 188,533株(0.57%)-0.33% |
| 10/29 | (空売り報告)GOLDMAN SACHS INTERNATIONAL 275,635株(0.84%)-0.11% |
| 10/28 | (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 |
| 10/28 | (IR情報)15:30 住友化学株式会社による株式会社田中化学研究所の完全子会社化に関する株式交換契約締結(簡易株式交換)のお知らせの開示の件 |
| 10/28 | (IR情報)15:30 業績予想の修正に関するお知らせ |
| 10/28 | (IR情報)15:30 2026年3月期第2四半期(中間期)決算短信〔日本基準〕(非連結) |
| 10/28 | 422 | 447 | 415 | 426 | +0.47% | 343,600 | 138億5905万 | +7.04% |
| 10/27 | 415 | 428 | 415 | 424 | +2.17% | 103,700 | 137億9399万 | +6.8% |
| 10/24 | 415 | 419 | 411 | 415 | 0% | 73,200 | 135億119万 | +4.8% |
| 10/24 | (空売り報告)Nomura International plc 293,447株(0.9%)+0.01% |
| 10/23 | 404 | 418 | 402 | 415 | +3.75% | 233,300 | 135億119万 | +4.8% |
| 10/23 | (空売り報告)GOLDMAN SACHS INTERNATIONAL 310,135株(0.95%)-0.14% |
| 10/22 | 395 | 405 | 392 | 400 | +1.27% | 92,100 | 130億1320万 | +1.27% |
| 10/22 | (空売り報告)Nomura International plc 291,594株(0.89%)-0.04% |
| 10/21 | 396 | 396 | 391 | 395 | +1.28% | 24,900 | 128億5053万 | 0% |
| 10/20 | 385 | 393 | 385 | 390 | +0.78% | 47,700 | 126億8787万 | -1.52% |
| 10/17 | 384 | 389 | 383 | 387 | +0.52% | 25,000 | 125億9027万 | -2.27% |
| 10/17 | (空売り報告)Barclays Capital Securities Ltd 161,611株(0.49%)-0.02%義務消失 |
| 10/16 | 388 | 389 | 384 | 385 | +0.26% | 25,400 | 125億2520万 | -2.78% |
| 10/16 | (空売り報告)GOLDMAN SACHS INTERNATIONAL 356,835株(1.09%)-0.1% |
| 10/15 | 384 | 388 | 384 | 384 | +0.79% | 42,700 | 124億9267万 | -3.27% |
| 10/14 | 380 | 383 | 377 | 381 | -1.04% | 72,900 | 123億9507万 | -4.03% |
| 10/10 | 395 | 395 | 382 | 385 | -2.28% | 153,700 | 125億2520万 | -3.27% |
| 10/10 | (空売り報告)Nomura International plc 304,133株(0.93%)+0.13% |
| 10/10 | (空売り報告)Barclays Capital Securities Ltd 168,911株(0.51%)再IN |
| 10/09 | 394 | 397 | 393 | 394 | 0% | 31,100 | 128億1800万 | -1.01% |
| 10/08 | 394 | 397 | 394 | 394 | -0.51% | 25,900 | 128億1800万 | -1.25% |
| 10/07 | 396 | 397 | 392 | 396 | 0% | 37,800 | 128億8306万 | -0.75% |
| 10/06 | 397 | 397 | 391 | 396 | -0.25% | 59,800 | 128億8306万 | -0.75% |
| 10/03 | 392 | 399 | 392 | 397 | +0.51% | 40,600 | 129億1560万 | -0.5% |
| 10/02 | 395 | 398 | 394 | 395 | -0.25% | 23,100 | 128億5053万 | -1.25% |
| 10/02 | (空売り報告)GOLDMAN SACHS INTERNATIONAL 390,135株(1.19%)-0.01% |
| 10/01 | 399 | 399 | 395 | 396 | -0.75% | 31,300 | 128億8306万 | -1% |
| 09/30 | 401 | 401 | 397 | 399 | -0.5% | 44,900 | 129億8066万 | -0.25% |
| 09/30 | (空売り報告)Nomura International plc 262,435株(0.8%)+0.1% |
| 09/29 | 405 | 405 | 401 | 401 | -0.5% | 11,600 | 130億4573万 | +0.25% |
| 09/26 | 399 | 405 | 398 | 403 | +1% | 50,100 | 131億1079万 | +0.5% |
| 09/25 | 400 | 401 | 398 | 399 | -0.25% | 49,000 | 129億8066万 | -0.5% |
| 09/24 | 400 | 404 | 399 | 400 | -0.5% | 26,300 | 130億1320万 | -0.25% |
| 09/22 | 402 | 406 | 401 | 402 | +0.5% | 61,500 | 130億7826万 | 0% |
| 09/19 | 404 | 404 | 397 | 400 | -0.25% | 49,900 | 130億1320万 | -0.5% |
| 09/18 | 401 | 407 | 401 | 401 | -0.5% | 64,400 | 130億4573万 | -0.5% |
| 09/17 | 400 | 404 | 400 | 403 | +0.25% | 20,600 | 131億1079万 | 0% |
| 09/16 | 400 | 403 | 399 | 402 | +0.75% | 30,800 | 130億7826万 | -0.25% |
| 09/12 | 400 | 401 | 398 | 399 | -0.25% | 27,300 | 129億8066万 | -0.99% |
| 09/11 | 399 | 402 | 397 | 400 | +0.25% | 31,500 | 130億1320万 | -0.74% |
| 09/10 | 396 | 399 | 396 | 399 | +0.76% | 20,600 | 129億8066万 | -0.99% |
| 09/09 | 400 | 401 | 396 | 396 | -0.75% | 41,600 | 128億8306万 | -1.74% |
| 09/08 | 396 | 403 | 393 | 399 | +1.79% | 61,800 | 129億8066万 | -0.99% |
| 09/05 | 396 | 397 | 391 | 392 | -1.01% | 59,600 | 127億5293万 | -2.97% |
| 09/04 | 400 | 400 | 395 | 396 | -0.5% | 44,100 | 128億8306万 | -1.98% |
| 09/03 | 403 | 403 | 397 | 398 | -0.5% | 49,000 | 129億4813万 | -1.73% |
| 09/02 | 404 | 404 | 400 | 400 | -0.5% | 32,400 | 130億1320万 | -1.23% |
| 09/01 | 403 | 408 | 399 | 402 | -0.74% | 93,600 | 130億7826万 | -0.99% |
| 08/29 | 403 | 409 | 403 | 405 | +0.5% | 35,100 | 131億7586万 | -0.25% |
| 08/28 | 401 | 405 | 401 | 403 | +0.25% | 23,400 | 131億1079万 | -0.74% |