| 2017 |
| 12/13 | 510 | 510 | 510 | 510 | +0.59% | 300 | 100億5823万 | -0.2% |
| 12/11 | 507 | 507 | 507 | 507 | +0.4% | 100 | 99億9906万 | -0.78% |
| 12/08 | 519 | 520 | 505 | 505 | -2.88% | 32,000 | 99億5962万 | -1.17% |
| 12/06 | 520 | 520 | 520 | 520 | 0% | 1,200 | 102億5545万 | +1.76% |
| 12/05 | 520 | 520 | 520 | 520 | +1.96% | 5,500 | 102億5545万 | +1.96% |
| 12/04 | 510 | 510 | 510 | 510 | +0.99% | 1,000 | 100億5823万 | 0% |
| 12/01 | 505 | 505 | 505 | 505 | +0.8% | 500 | 99億5962万 | -0.98% |
| 11/29 | 501 | 501 | 501 | 501 | -1.57% | 1,100 | 98億8073万 | -1.76% |
| 11/28 | 509 | 509 | 509 | 509 | 0% | 700 | 100億3851万 | -0.59% |
| 11/27 | 511 | 511 | 509 | 509 | -0.2% | 2,600 | 100億3851万 | -0.59% |
| 11/24 | 510 | 510 | 510 | 510 | 0% | 1,000 | 100億5823万 | -0.58% |
| 11/22 | 510 | 510 | 510 | 510 | -1.16% | 2,000 | 100億5823万 | -0.78% |
| 11/21 | 516 | 517 | 516 | 516 | +0.19% | 1,100 | 101億7656万 | +0.39% |
| 11/20 | 515 | 515 | 515 | 515 | 0% | 600 | 101億5684万 | 0% |
| 11/17 | 515 | 515 | 515 | 515 | 0% | 300 | 101億5684万 | -0.19% |
| 11/16 | 515 | 515 | 515 | 515 | +1.18% | 100 | 101億5684万 | -0.19% |
| 11/15 | 516 | 516 | 506 | 509 | +0.59% | 2,200 | 100億3851万 | -1.36% |
| 11/13 | 515 | 515 | 506 | 506 | -3.25% | 2,900 | 99億7934万 | -1.94% |
| 11/09 | 522 | 523 | 522 | 523 | +0.19% | 400 | 103億1462万 | +1.16% |
| 11/08 | 520 | 522 | 520 | 522 | +2.35% | 500 | 102億9489万 | +1.16% |
| 11/07 | 510 | 515 | 510 | 510 | -0.58% | 300 | 100億5823万 | -0.78% |
| 11/02 | 514 | 514 | 507 | 513 | -0.39% | 6,100 | 101億1739万 | -0.19% |
| 11/01 | 506 | 515 | 506 | 515 | +1.98% | 200 | 101億5684万 | +0.19% |
| 10/31 | 505 | 505 | 505 | 505 | +0.8% | 100 | 99億5962万 | -1.75% |
| 10/30 | 511 | 511 | 501 | 501 | -0.99% | 3,100 | 98億8073万 | -2.91% |
| 10/27 | 500 | 506 | 500 | 506 | -0.78% | 3,300 | 99億7934万 | -2.13% |
| 10/25 | 510 | 510 | 510 | 510 | +2% | 100 | 100億5823万 | -1.73% |
| 10/24 | 16:30 平成30年3月期第2四半期決算短信〔日本基準〕(連結) |
| 10/24 | 504 | 505 | 500 | 500 | -0.6% | 5,500 | 98億6101万 | -3.85% |
| 10/23 | 527 | 540 | 502 | 503 | +0.6% | 10,800 | 99億2017万 | -3.45% |
| 10/20 | 518 | 518 | 500 | 500 | -2.15% | 2,100 | 98億6101万 | -4.58% |
| 10/17 | 514 | 514 | 501 | 511 | -2.48% | 5,200 | 100億7795万 | -2.85% |
| 10/16 | 530 | 530 | 524 | 524 | -2.6% | 800 | 103億3434万 | -0.57% |
| 10/13 | 538 | 538 | 538 | 538 | +2.67% | 1,000 | 106億1045万 | +1.89% |
| 10/06 | 520 | 524 | 520 | 524 | -1.13% | 800 | 103億3434万 | -0.76% |
| 10/05 | 532 | 532 | 530 | 530 | +1.53% | 6,200 | 104億5267万 | +0.38% |
| 10/04 | 522 | 522 | 522 | 522 | 0% | 200 | 102億9489万 | -1.14% |
| 10/03 | 522 | 522 | 505 | 522 | -1.88% | 3,200 | 102億9489万 | -1.14% |
| 09/28 | 532 | 532 | 532 | 532 | 0% | 800 | 104億9211万 | +0.76% |
| 09/22 | 532 | 532 | 532 | 532 | +1.92% | 6,600 | 104億9211万 | +0.57% |
| 09/21 | 529 | 529 | 512 | 522 | +0.19% | 1,600 | 102億9489万 | -1.32% |
| 09/20 | 521 | 521 | 521 | 521 | +2.16% | 100 | 102億7517万 | -1.51% |
| 09/15 | 530 | 530 | 510 | 510 | -1.92% | 1,900 | 100億5823万 | -3.59% |
| 09/14 | 501 | 520 | 501 | 520 | +4% | 2,600 | 102億5545万 | -1.89% |
| 09/13 | 500 | 501 | 500 | 500 | +2.04% | 2,400 | 98億6101万 | -6.02% |
| 09/12 | 503 | 503 | 490 | 490 | -1.01% | 1,100 | 96億6379万 | -8.41% |
| 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% |
