| 2017 |
| 09/11 | 530 | 530 | 487 | 495 | -4.81% | 24,200 | 97億6240万 | -7.82% |
| 09/08 | 520 | 520 | 520 | 520 | 0% | 100 | 102億5545万 | -3.53% |
| 09/07 | 536 | 536 | 520 | 520 | -2.99% | 3,100 | 102億5545万 | -3.53% |
| 09/06 | 536 | 536 | 536 | 536 | 0% | 1,000 | 105億7100万 | -0.74% |
| 09/05 | 559 | 559 | 536 | 536 | -2.55% | 5,600 | 105億7100万 | -0.74% |
| 09/04 | 563 | 565 | 550 | 550 | +1.29% | 1,700 | 108億4711万 | +2.23% |
| 09/01 | 540 | 543 | 540 | 543 | +1.69% | 200 | 107億906万 | +1.12% |
| 08/23 | 534 | 534 | 534 | 534 | -5.32% | 1,400 | 105億3156万 | -0.37% |
| 08/22 | 565 | 565 | 564 | 564 | +1.62% | 14,800 | 111億2322万 | +5.22% |
| 08/21 | 545 | 555 | 545 | 555 | +2.59% | 200 | 109億4572万 | +3.93% |
| 08/18 | 541 | 541 | 541 | 541 | +0.19% | 100 | 106億6961万 | +1.69% |
| 08/17 | 540 | 540 | 535 | 540 | 0% | 1,300 | 106億4989万 | +1.89% |
| 08/15 | 540 | 540 | 540 | 540 | +2.86% | 800 | 106億4989万 | +2.08% |
| 08/10 | 525 | 525 | 525 | 525 | +0.96% | 100 | 103億5406万 | -0.57% |
| 08/07 | 520 | 520 | 520 | 520 | -0.95% | 3,000 | 102億5545万 | -1.33% |
| 08/04 | 540 | 540 | 511 | 525 | -2.78% | 13,900 | 103億5406万 | -0.19% |
| 08/03 | 540 | 540 | 540 | 540 | -0.92% | 200 | 106億4989万 | +2.66% |
| 08/02 | 537 | 545 | 537 | 545 | +3.61% | 700 | 107億4850万 | +4.01% |
| 08/01 | 526 | 526 | 526 | 526 | +1.15% | 100 | 103億7378万 | +0.57% |
| 07/31 | 521 | 524 | 520 | 520 | -1.89% | 6,400 | 102億5545万 | -0.38% |
| 07/28 | 16:00 平成30年3月期第1四半期決算短信〔日本基準〕(連結) |
| 07/28 | 15:00 ほくでんグループの再編(配電事業の統合)に向けた検討開始に関するお知らせ |
| 07/28 | 533 | 533 | 524 | 530 | +1.34% | 500 | 104億5267万 | +1.73% |
| 07/27 | 527 | 539 | 513 | 523 | -10.9% | 11,200 | 103億1462万 | +0.58% |
| 07/26 | 587 | 590 | 587 | 587 | +2.98% | 13,700 | 115億7682万 | +13.1% |
| 07/25 | 566 | 580 | 566 | 570 | +3.64% | 8,100 | 112億4155万 | +10.47% |
| 07/24 | 545 | 550 | 545 | 550 | +3.77% | 7,800 | 108億4711万 | +7.21% |
| 07/21 | 530 | 530 | 530 | 530 | -0.75% | 100 | 104億5267万 | +3.92% |
| 07/20 | 534 | 534 | 534 | 534 | -0.19% | 1,000 | 105億3156万 | +4.91% |
| 07/19 | 535 | 535 | 535 | 535 | +1.9% | 100 | 105億5128万 | +5.52% |
| 07/14 | 525 | 525 | 525 | 525 | +2.94% | 1,100 | 103億5406万 | +3.96% |
| 07/11 | 510 | 510 | 510 | 510 | -0.2% | 3,000 | 100億5823万 | +1.19% |
| 07/10 | 511 | 511 | 511 | 511 | -3.77% | 100 | 100億7795万 | +1.59% |
| 07/05 | 531 | 531 | 531 | 531 | +1.92% | 20,200 | 104億7239万 | +5.78% |
| 07/04 | 521 | 521 | 521 | 521 | +0.19% | 100 | 102億7517万 | +4.2% |
| 07/03 | 510 | 520 | 510 | 520 | +3.38% | 6,100 | 102億5545万 | +4% |
| 06/29 | 16:00 役員人事に関するお知らせ |
| 06/28 | 510 | 510 | 503 | 503 | +0.6% | 4,400 | 99億2017万 | +0.8% |
| 06/27 | 500 | 500 | 500 | 500 | +0.4% | 1,000 | 98億6101万 | +0.2% |
| 06/26 | 498 | 498 | 498 | 498 | -2.35% | 5,000 | 98億2156万 | -0.2% |
| 06/22 | 510 | 510 | 510 | 510 | +0.99% | 6,800 | 100億5823万 | +2.2% |
| 06/20 | 505 | 505 | 505 | 505 | 0% | 500 | 99億5962万 | +1.41% |
| 06/19 | 505 | 505 | 505 | 505 | -0.98% | 1,100 | 99億5962万 | +1.41% |
| 06/16 | 510 | 510 | 510 | 510 | +2% | 100 | 100億5823万 | +2.62% |
| 06/15 | 518 | 518 | 500 | 500 | -1.77% | 1,600 | 98億6101万 | +0.81% |
| 06/14 | 16:00 執行役員の任用および委嘱業務ならびに関連人事に関するお知らせ |
| 06/14 | 509 | 509 | 509 | 509 | +0.59% | 300 | 100億3851万 | +3.04% |
| 06/12 | 506 | 506 | 506 | 506 | 0% | 600 | 99億7934万 | +2.64% |
| 06/09 | 516 | 516 | 506 | 506 | 0% | 14,700 | 99億7934万 | +2.85% |
| 06/08 | 501 | 510 | 501 | 506 | +1.2% | 3,800 | 99億7934万 | +3.27% |
| 06/07 | 496 | 500 | 496 | 500 | +0.81% | 2,300 | 98億6101万 | +2.25% |
| 06/06 | 496 | 496 | 496 | 496 | +0.2% | 1,000 | 97億8212万 | +1.64% |
| 06/05 | 504 | 504 | 495 | 495 | +1.02% | 11,300 | 97億6240万 | +1.64% |
| 06/02 | 490 | 490 | 490 | 490 | 0% | 4,000 | 96億6379万 | +0.62% |
| 06/01 | 485 | 490 | 485 | 490 | -0.41% | 6,100 | 96億6379万 | +0.82% |
| 05/29 | 492 | 492 | 492 | 492 | -1.01% | 2,000 | 97億323万 | +1.44% |
| 05/25 | 16:30 支配株主等に関する事項について |
| 05/25 | 16:30 定款一部変更に関するお知らせ |
| 05/22 | 504 | 504 | 497 | 497 | +1.43% | 7,900 | 98億184万 | +2.47% |
| 05/19 | 490 | 490 | 490 | 490 | +1.03% | 1,000 | 96億6379万 | +1.24% |
| 05/16 | 485 | 485 | 485 | 485 | +1.89% | 100 | 95億6518万 | +0.41% |
| 05/15 | 492 | 492 | 476 | 476 | -4.8% | 6,300 | 93億8768万 | -1.45% |
| 05/11 | 500 | 500 | 499 | 500 | 0% | 2,100 | 98億6101万 | +3.52% |
| 05/10 | 500 | 500 | 500 | 500 | -1.57% | 500 | 98億6101万 | +3.73% |
| 05/02 | 510 | 510 | 508 | 508 | +1.6% | 5,300 | 100億1878万 | +5.83% |
| 05/01 | 500 | 510 | 500 | 500 | +0.4% | 4,500 | 98億6101万 | +4.38% |
| 04/28 | 19:15 (訂正)「代表取締役等の役員人事に関するお知らせ」の一部訂正について |
| 04/28 | 17:00 代表取締役等の役員人事に関するお知らせ |
| 04/28 | 17:00 平成29年3月期決算短信〔日本基準〕(連結) |
| 04/28 | 498 | 498 | 498 | 498 | +1.63% | 500 | 98億2156万 | +4.4% |
| 04/26 | 498 | 498 | 490 | 490 | -1.01% | 1,100 | 96億6379万 | +3.16% |
| 04/25 | 495 | 495 | 495 | 495 | -0.4% | 300 | 97億6240万 | +4.43% |
| 04/24 | 497 | 497 | 497 | 497 | +2.9% | 7,400 | 98億184万 | +5.3% |
| 04/21 | 483 | 483 | 483 | 483 | +0.63% | 100 | 95億2573万 | +2.55% |
| 04/20 | 480 | 480 | 480 | 480 | +1.91% | 900 | 94億6657万 | +2.13% |
| 04/18 | 480 | 480 | 471 | 471 | -1.67% | 2,000 | 92億8907万 | +0.21% |
| 04/14 | 479 | 479 | 479 | 479 | +1.7% | 2,700 | 94億4685万 | +1.91% |
| 04/12 | 471 | 471 | 471 | 471 | +0.21% | 900 | 92億8907万 | +0.43% |
| 04/07 | 470 | 470 | 470 | 470 | -2.29% | 3,000 | 92億6935万 | +0.43% |
| 04/05 | 481 | 481 | 481 | 481 | +1.26% | 6,300 | 94億8629万 | +2.78% |
| 04/03 | 473 | 475 | 473 | 475 | +0.64% | 300 | 93億6796万 | +1.71% |
| 03/24 | 473 | 473 | 472 | 472 | -0.21% | 2,000 | 93億879万 | +1.07% |
| 03/22 | 481 | 481 | 473 | 473 | -1.66% | 10,000 | 93億2851万 | +1.28% |
| 03/21 | 481 | 481 | 481 | 481 | +1.91% | 2,000 | 94億8629万 | +3% |
| 03/17 | 16:00 組織改正、役付取締役および取締役の委嘱業務・担務の変更、人事発令に関するお知らせ |
| 03/17 | 472 | 472 | 472 | 472 | 0% | 1,000 | 93億879万 | +1.29% |
| 03/16 | 472 | 472 | 472 | 472 | -1.67% | 5,000 | 93億879万 | +1.29% |
| 03/14 | 480 | 480 | 480 | 480 | +1.27% | 3,000 | 94億6657万 | +3% |
| 03/10 | 480 | 480 | 474 | 474 | -2.27% | 2,000 | 93億4824万 | +1.72% |
| 03/03 | 485 | 485 | 485 | 485 | +2.97% | 4,000 | 95億6518万 | +4.3% |
| 02/22 | 471 | 471 | 471 | 471 | +1.07% | 7,000 | 92億8907万 | +1.51% |
| 02/20 | 467 | 467 | 466 | 466 | -0.21% | 3,000 | 91億9046万 | +0.43% |
| 02/16 | 467 | 467 | 467 | 467 | +0.65% | 2,000 | 92億1018万 | +0.86% |
| 02/15 | 464 | 464 | 464 | 464 | +1.75% | 1,000 | 91億5102万 | +0.43% |
| 02/13 | 456 | 456 | 456 | 456 | -0.87% | 4,000 | 89億9324万 | -0.87% |
| 02/03 | 460 | 460 | 460 | 460 | +1.55% | 6,000 | 90億7213万 | +0.22% |
| 02/02 | 453 | 453 | 453 | 453 | -0.44% | 1,000 | 89億3407万 | -1.09% |
| 01/30 | 17:00 単元株式数の変更および定款の一部変更に関するお知らせ |
| 01/30 | 17:00 平成29年3月期第3四半期決算短信〔日本基準〕(連結) |
| 01/30 | 455 | 455 | 455 | 455 | -2.57% | 2,000 | 89億7352万 | -0.44% |
| 01/23 | 467 | 467 | 467 | 467 | +1.52% | 7,000 | 92億1018万 | +2.41% |
| 01/16 | 460 | 460 | 460 | 460 | -1.5% | 1,000 | 90億7213万 | +1.1% |
| 01/13 | 467 | 467 | 467 | 467 | 0% | 1,000 | 92億1018万 | +2.86% |
| 01/11 | 467 | 467 | 467 | 467 | +2.64% | 1,000 | 92億1018万 | +3.09% |
| 01/06 | 455 | 455 | 455 | 455 | -1.3% | 1,000 | 89億7352万 | +0.89% |
| 01/05 | 461 | 461 | 461 | 461 | 0% | 4,000 | 90億9185万 | +2.44% |
| 01/04 | 461 | 461 | 461 | 461 | +0.22% | 3,000 | 90億9185万 | +2.67% |
| 2016 |
| 12/28 | 460 | 460 | 460 | 460 | -3.56% | 4,000 | 90億7213万 | +2.68% |
| 12/22 | 16:00 執行役員の委嘱業務の変更に関するお知らせ |
| 12/22 | 477 | 477 | 477 | 477 | +1.71% | 8,000 | 94億740万 | +6.47% |
| 12/21 | 466 | 469 | 466 | 469 | -1.26% | 2,000 | 92億4963万 | +4.92% |
| 12/20 | 475 | 475 | 475 | 475 | +1.5% | 2,000 | 93億6796万 | +6.5% |
| 12/19 | 468 | 468 | 468 | 468 | 0% | 1,000 | 92億2990万 | +5.17% |
