| 2014 |
| 03/03 | 470 | 470 | 457 | 469 | -0.85% | 700 | 42億2100万 | +6.59% |
| 02/28 | 466 | 473 | 466 | 473 | -0.21% | 500 | 42億5700万 | +7.74% |
| 02/27 | 469 | 474 | 469 | 474 | -0.42% | 5,500 | 42億6600万 | +8.22% |
| 02/26 | 477 | 477 | 476 | 476 | -0.21% | 500 | 42億8400万 | +8.92% |
| 02/25 | 461 | 477 | 461 | 477 | +1.71% | 400 | 42億9300万 | +9.66% |
| 02/24 | 450 | 469 | 450 | 469 | +6.11% | 9,800 | 42億2100万 | +8.06% |
| 02/21 | 430 | 442 | 430 | 442 | +5.24% | 1,000 | 39億7800万 | +2.08% |
| 02/20 | 428 | 428 | 420 | 420 | -1.18% | 900 | 37億8000万 | -3% |
| 02/19 | 423 | 430 | 423 | 425 | -0.7% | 2,400 | 38億2500万 | -2.07% |
| 02/18 | 420 | 428 | 420 | 428 | +0.94% | 13,400 | 38億5200万 | -1.61% |
| 02/17 | 15:00 資本金の額の減少(「その他資本剰余金」の増加)についてのお知らせ |
| 02/17 | 418 | 424 | 396 | 424 | +1.44% | 10,000 | 38億1600万 | -2.3% |
| 02/14 | 416 | 422 | 413 | 418 | -1.42% | 1,700 | 37億6200万 | -3.69% |
| 02/13 | 431 | 431 | 420 | 424 | -1.62% | 1,200 | 38億1600万 | -2.53% |
| 02/12 | 423 | 431 | 423 | 431 | +2.13% | 600 | 38億7900万 | -0.69% |
| 02/10 | 423 | 424 | 420 | 422 | -0.24% | 2,200 | 37億9800万 | -2.54% |
| 02/07 | 419 | 423 | 419 | 423 | +0.48% | 1,000 | 38億700万 | -2.08% |
| 02/05 | 421 | 421 | 421 | 421 | +0.24% | 500 | 37億8900万 | -2.32% |
| 02/04 | 432 | 432 | 419 | 420 | -3.23% | 1,500 | 37億8000万 | -2.33% |
| 02/03 | 434 | 434 | 421 | 434 | 0% | 11,400 | 39億600万 | +1.17% |
| 01/31 | 431 | 434 | 431 | 434 | +0.23% | 500 | 39億600万 | +1.64% |
| 01/29 | 425 | 434 | 425 | 433 | +1.88% | 7,000 | 38億9700万 | +1.41% |
| 01/28 | 13:00 自己株式の消却に関するお知らせ |
| 01/28 | 13:00 平成26年3月期第3四半期決算短信〔日本基準〕(非連結) |
| 01/28 | 430 | 439 | 409 | 425 | +0.71% | 10,000 | 38億2500万 | -0.23% |
| 01/27 | 434 | 434 | 410 | 422 | -5.17% | 2,800 | 37億9800万 | -0.71% |
| 01/24 | 465 | 465 | 445 | 445 | -4.3% | 500 | 40億500万 | +4.95% |
| 01/20 | 460 | 465 | 460 | 465 | +2.2% | 700 | 41億8500万 | +9.93% |
| 01/17 | 450 | 457 | 449 | 455 | +1.11% | 2,100 | 40億9500万 | +8.33% |
| 01/16 | 447 | 455 | 447 | 450 | +1.81% | 700 | 40億5000万 | +7.66% |
| 01/14 | 447 | 447 | 442 | 442 | +2.55% | 300 | 39億7800万 | +6.25% |
| 01/10 | 437 | 437 | 431 | 431 | -1.37% | 1,300 | 38億7900万 | +4.11% |
| 01/09 | 439 | 447 | 437 | 437 | -2.67% | 500 | 39億3300万 | +6.07% |
| 01/07 | 449 | 449 | 449 | 449 | -2.18% | 500 | 40億4100万 | +9.51% |
| 01/06 | 448 | 459 | 448 | 459 | +3.85% | 2,100 | 41億3100万 | +12.78% |
| 2013 |
| 12/30 | 432 | 443 | 429 | 442 | +2.31% | 8,000 | 39億7800万 | +9.41% |
| 12/27 | 430 | 434 | 427 | 432 | +2.86% | 7,000 | 38億8800万 | +7.73% |
| 12/26 | 420 | 420 | 420 | 420 | 0% | 100 | 37億8000万 | +5% |
| 12/25 | 420 | 421 | 420 | 420 | -2.33% | 800 | 37億8000万 | +5.26% |
| 12/24 | 429 | 448 | 428 | 430 | +8.31% | 15,000 | 38億7000万 | +8.31% |
| 12/20 | 15:00 日本瓦斯株式会社による東彩ガス株式会社、東日本ガス株式会社、新日本瓦斯株式会社及び北日本ガス株式会社の株式交換による完全子会社化のお知らせ |
| 12/20 | 15:00 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 |
| 12/19 | 397 | 397 | 397 | 397 | -1.98% | 800 | 35億7300万 | +0.51% |
| 12/16 | 405 | 405 | 405 | 405 | 0% | 300 | 36億4500万 | +2.53% |
| 12/12 | 405 | 405 | 405 | 405 | 0% | 1,200 | 36億4500万 | +2.79% |
| 12/11 | 405 | 405 | 405 | 405 | +2.02% | 2,500 | 36億4500万 | +3.05% |
| 12/09 | 397 | 397 | 397 | 397 | +1.28% | 100 | 35億7300万 | +1.28% |
| 12/05 | 392 | 392 | 392 | 392 | 0% | 600 | 35億2800万 | 0% |
| 12/04 | 402 | 405 | 392 | 392 | -5.08% | 3,100 | 35億2800万 | +0.26% |
| 12/03 | 414 | 414 | 413 | 413 | +0.98% | 400 | 37億1700万 | +5.63% |
| 12/02 | 409 | 409 | 409 | 409 | 0% | 300 | 36億8100万 | +4.87% |
| 11/28 | 409 | 409 | 409 | 409 | 0% | 100 | 36億8100万 | +5.14% |
| 11/27 | 410 | 410 | 409 | 409 | +1.24% | 1,000 | 36億8100万 | +5.41% |
| 11/26 | 404 | 404 | 404 | 404 | 0% | 600 | 36億3600万 | +4.39% |
| 11/22 | 404 | 404 | 404 | 404 | 0% | 1,600 | 36億3600万 | +4.66% |
| 11/21 | 401 | 404 | 401 | 404 | +3.59% | 1,300 | 36億3600万 | +4.94% |
| 11/20 | 390 | 390 | 390 | 390 | 0% | 200 | 35億1000万 | +1.56% |
| 11/15 | 390 | 390 | 390 | 390 | +1.83% | 1,100 | 35億1000万 | +1.56% |
| 11/14 | 383 | 383 | 383 | 383 | +1.06% | 300 | 34億4700万 | -0.26% |
| 11/13 | 379 | 379 | 379 | 379 | 0% | 100 | 34億1100万 | -1.3% |
| 11/11 | 384 | 384 | 379 | 379 | -1.3% | 1,800 | 34億1100万 | -1.3% |
| 11/08 | 379 | 384 | 379 | 384 | +1.05% | 200 | 34億5600万 | 0% |
| 11/06 | 387 | 387 | 380 | 380 | -3.8% | 900 | 34億2000万 | -1.04% |
| 11/05 | 395 | 395 | 395 | 395 | +1.54% | 1,300 | 35億5500万 | +2.86% |
| 11/01 | 389 | 389 | 389 | 389 | 0% | 200 | 35億100万 | +1.3% |
| 10/31 | 389 | 389 | 389 | 389 | +3.73% | 1,000 | 35億100万 | +1.3% |
| 10/30 | 380 | 380 | 375 | 375 | -3.35% | 900 | 33億7500万 | -2.09% |
| 10/29 | 13:00 平成26年3月期第2四半期決算短信〔日本基準〕(非連結) |
| 10/29 | 388 | 388 | 388 | 388 | +1.84% | 900 | 34億9200万 | +1.31% |
| 10/28 | 15:00 業績予想の修正に関するお知らせ |
| 10/28 | 385 | 385 | 381 | 381 | -1.04% | 800 | 34億2900万 | -0.52% |
| 10/17 | 385 | 385 | 385 | 385 | 0% | 600 | 34億6500万 | +0.52% |
| 10/16 | 385 | 385 | 385 | 385 | +0.26% | 100 | 34億6500万 | +0.79% |
| 10/15 | 384 | 384 | 384 | 384 | 0% | 100 | 34億5600万 | +0.52% |
| 10/11 | 385 | 385 | 384 | 384 | 0% | 600 | 34億5600万 | +0.52% |
| 10/10 | 384 | 384 | 384 | 384 | 0% | 200 | 34億5600万 | +0.52% |
| 10/09 | 384 | 384 | 384 | 384 | +1.05% | 100 | 34億5600万 | +0.52% |
| 10/07 | 375 | 380 | 375 | 380 | -1.04% | 200 | 34億2000万 | -0.52% |
| 10/04 | 384 | 384 | 384 | 384 | 0% | 100 | 34億5600万 | +0.79% |
| 10/02 | 384 | 384 | 384 | 384 | +1.05% | 300 | 34億5600万 | +0.79% |
| 10/01 | 380 | 380 | 380 | 380 | 0% | 100 | 34億2000万 | -0.26% |
| 09/30 | 384 | 384 | 380 | 380 | -1.3% | 300 | 34億2000万 | -0.26% |
| 09/27 | 385 | 385 | 385 | 385 | -0.26% | 700 | 34億6500万 | +1.05% |
| 09/26 | 386 | 386 | 386 | 386 | -0.77% | 700 | 34億7400万 | +1.31% |
| 09/24 | 389 | 389 | 389 | 389 | +1.83% | 900 | 35億100万 | +2.1% |
| 09/20 | 384 | 384 | 382 | 382 | 0% | 1,300 | 34億3800万 | +0.53% |
| 09/11 | 377 | 382 | 377 | 382 | 0% | 200 | 34億3800万 | +0.79% |
| 09/10 | 383 | 383 | 382 | 382 | 0% | 2,600 | 34億3800万 | +0.79% |
| 09/09 | 385 | 385 | 382 | 382 | -0.78% | 4,600 | 34億3800万 | +0.79% |
| 09/06 | 385 | 385 | 385 | 385 | +0.26% | 200 | 34億6500万 | +1.58% |
| 09/05 | 384 | 384 | 384 | 384 | 0% | 2,800 | 34億5600万 | +1.32% |
| 09/03 | 384 | 384 | 384 | 384 | +0.79% | 4,000 | 34億5600万 | +1.59% |
| 09/02 | 372 | 381 | 372 | 381 | +2.42% | 1,200 | 34億2900万 | +0.79% |
| 08/30 | 373 | 373 | 372 | 372 | -2.87% | 200 | 33億4800万 | -1.33% |
| 08/27 | 383 | 383 | 383 | 383 | +0.26% | 1,300 | 34億4700万 | +1.32% |
| 08/26 | 372 | 382 | 372 | 382 | +3.24% | 300 | 34億3800万 | +1.33% |
| 08/20 | 370 | 370 | 370 | 370 | +0.54% | 200 | 33億3000万 | -1.86% |
| 08/19 | 368 | 368 | 368 | 368 | -4.17% | 200 | 33億1200万 | -2.39% |
| 08/16 | 384 | 384 | 384 | 384 | +0.26% | 100 | 34億5600万 | +2.13% |
| 08/15 | 383 | 383 | 383 | 383 | 0% | 100 | 34億4700万 | +2.13% |
| 08/14 | 383 | 383 | 383 | 383 | -0.26% | 200 | 34億4700万 | +2.68% |
| 08/13 | 384 | 384 | 384 | 384 | +2.4% | 400 | 34億5600万 | +3.23% |
| 08/12 | 375 | 375 | 375 | 375 | 0% | 1,500 | 33億7500万 | +1.08% |
| 08/09 | 375 | 375 | 375 | 375 | -1.32% | 200 | 33億7500万 | +1.08% |
| 08/07 | 382 | 382 | 380 | 380 | -1.04% | 200 | 34億2000万 | +2.43% |
| 08/02 | 384 | 384 | 384 | 384 | 0% | 200 | 34億5600万 | +3.5% |
| 08/01 | 384 | 384 | 384 | 384 | -0.26% | 200 | 34億5600万 | +3.5% |