| 2014 |
| 03/03 | 386 | 398 | 385 | 398 | +2.05% | 6,200 | 30億1922万 | +7.57% |
| 02/28 | 403 | 403 | 390 | 390 | -2.5% | 2,800 | 29億5854万 | +5.41% |
| 02/27 | 392 | 401 | 385 | 400 | +1.78% | 6,700 | 30億3440万 | +8.11% |
| 02/26 | 400 | 406 | 391 | 393 | -1.75% | 7,300 | 29億8129万 | +6.22% |
| 02/25 | 407 | 408 | 400 | 400 | 0% | 17,200 | 30億3440万 | +8.11% |
| 02/24 | 385 | 400 | 385 | 400 | +6.1% | 31,100 | 30億3440万 | +8.11% |
| 02/21 | 368 | 384 | 368 | 377 | +5.31% | 18,600 | 28億5992万 | +2.17% |
| 02/20 | 360 | 361 | 350 | 358 | -0.56% | 6,000 | 27億1578万 | -2.98% |
| 02/19 | 358 | 363 | 358 | 360 | -1.37% | 3,000 | 27億3096万 | -2.44% |
| 02/18 | 360 | 365 | 356 | 365 | +1.39% | 6,300 | 27億6889万 | -1.35% |
| 02/17 | (IR情報)15:00 減資に関するお知らせ |
| 02/17 | 352 | 360 | 332 | 360 | +2.27% | 5,700 | 27億3096万 | -2.7% |
| 02/14 | 365 | 365 | 350 | 352 | -3.83% | 3,500 | 26億7027万 | -4.86% |
| 02/13 | 366 | 366 | 366 | 366 | 0% | 200 | 27億7647万 | -1.35% |
| 02/12 | 366 | 366 | 366 | 366 | +1.95% | 2,000 | 27億7647万 | -1.61% |
| 02/10 | 359 | 360 | 352 | 359 | 0% | 7,000 | 27億2337万 | -3.49% |
| 02/07 | 355 | 360 | 350 | 359 | +2.28% | 7,200 | 27億2337万 | -3.49% |
| 02/06 | 349 | 352 | 349 | 351 | +0.29% | 4,400 | 26億6268万 | -5.9% |
| 02/05 | 354 | 354 | 350 | 350 | -1.41% | 200 | 26億5510万 | -6.17% |
| 02/04 | 343 | 375 | 343 | 355 | -3.27% | 1,700 | 26億9303万 | -4.83% |
| 02/03 | 354 | 370 | 354 | 367 | +1.66% | 2,800 | 27億8406万 | -1.61% |
| 01/31 | 365 | 369 | 360 | 361 | -1.37% | 9,700 | 27億3854万 | -2.7% |
| 01/30 | 369 | 369 | 360 | 366 | -1.35% | 2,300 | 27億7647万 | -1.08% |
| 01/29 | (IR情報)16:00 自己株式の消却に関するお知らせ |
| 01/29 | (IR情報)16:00 平成26年3月期第3四半期決算短信〔日本基準〕(非連結) |
| 01/29 | 367 | 378 | 357 | 371 | +2.49% | 5,900 | 28億1440万 | +0.82% |
| 01/28 | 363 | 363 | 361 | 362 | +0.28% | 1,700 | 27億4613万 | -1.36% |
| 01/27 | 361 | 361 | 361 | 361 | -7.91% | 1,900 | 27億3854万 | -1.37% |
| 01/23 | 393 | 397 | 392 | 392 | -1.26% | 4,300 | 29億7371万 | +7.4% |
| 01/22 | 399 | 399 | 397 | 397 | -0.5% | 300 | 30億1164万 | +9.37% |
| 01/21 | 399 | 399 | 399 | 399 | 0% | 12,700 | 30億2681万 | +10.83% |
| 01/20 | 388 | 400 | 388 | 399 | +3.37% | 10,200 | 30億2681万 | +11.45% |
| 01/17 | 383 | 386 | 383 | 386 | +0.78% | 3,300 | 29億2819万 | +8.43% |
| 01/16 | 380 | 387 | 379 | 383 | +2.41% | 8,400 | 29億543万 | +8.19% |
| 01/15 | 378 | 378 | 371 | 374 | +1.08% | 3,600 | 28億3716万 | +6.25% |
| 01/14 | 364 | 370 | 364 | 370 | +0.82% | 11,600 | 28億682万 | +5.41% |
| 01/10 | 365 | 367 | 365 | 367 | -0.27% | 1,800 | 27億8406万 | +5.16% |
| 01/09 | 365 | 369 | 365 | 368 | -0.54% | 600 | 27億9164万 | +5.75% |
| 01/08 | 367 | 370 | 367 | 370 | -1.33% | 900 | 28億682万 | +6.63% |
| 01/07 | 375 | 375 | 375 | 375 | -2.09% | 3,100 | 28億4475万 | +8.7% |
| 01/06 | 381 | 387 | 381 | 383 | +2.13% | 12,800 | 29億543万 | +11.34% |
| 2013 |
| 12/30 | 369 | 377 | 369 | 375 | +1.63% | 17,600 | 28億4475万 | +9.65% |
| 12/27 | 364 | 369 | 364 | 369 | +1.93% | 3,800 | 27億9923万 | +8.53% |
| 12/26 | 362 | 372 | 359 | 362 | +1.12% | 6,400 | 27億4613万 | +6.78% |
| 12/25 | 360 | 360 | 351 | 358 | -2.19% | 9,900 | 27億1578万 | +5.92% |
| 12/24 | 351 | 383 | 351 | 366 | +9.25% | 109,200 | 27億7647万 | +8.61% |
| 12/20 | (IR情報)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 |
| 12/20 | (IR情報)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 | 335 | 335 | 335 | 335 | +0.6% | 6,100 | 25億4131万 | 0% |
| 12/19 | 333 | 334 | 333 | 333 | +0.91% | 700 | 25億2613万 | -0.6% |
| 12/18 | 327 | 330 | 327 | 330 | +0.92% | 700 | 25億338万 | -1.49% |
| 12/17 | 327 | 328 | 327 | 327 | -0.91% | 300 | 24億8062万 | -2.1% |
| 12/16 | 325 | 330 | 325 | 330 | -1.49% | 4,900 | 25億338万 | -1.49% |
| 12/13 | 339 | 339 | 335 | 335 | -1.18% | 3,100 | 25億4131万 | 0% |
| 12/12 | 338 | 339 | 338 | 339 | +0.3% | 300 | 25億7165万 | +1.19% |
| 12/11 | 339 | 339 | 337 | 338 | -0.59% | 3,700 | 25億6406万 | +0.9% |
| 12/10 | 344 | 344 | 340 | 340 | +0.29% | 5,200 | 25億7924万 | +1.49% |
| 12/09 | 341 | 341 | 339 | 339 | 0% | 8,400 | 25億7165万 | +1.5% |
| 12/06 | 339 | 339 | 339 | 339 | 0% | 200 | 25億7165万 | +1.8% |
| 12/04 | 337 | 345 | 337 | 339 | -1.74% | 2,100 | 25億7165万 | +1.8% |
| 12/02 | 345 | 345 | 345 | 345 | +2.68% | 300 | 26億1717万 | +3.92% |
| 11/29 | 347 | 347 | 336 | 336 | -0.88% | 36,600 | 25億4889万 | +1.51% |
| 11/28 | 341 | 342 | 338 | 339 | 0% | 1,200 | 25億7165万 | +2.42% |
| 11/27 | 332 | 339 | 332 | 339 | +1.19% | 1,000 | 25億7165万 | +2.42% |
| 11/26 | 331 | 335 | 331 | 335 | +1.21% | 1,100 | 25億4131万 | +1.52% |
| 11/25 | 336 | 336 | 331 | 331 | 0% | 1,500 | 25億1096万 | +0.3% |
| 11/21 | 331 | 331 | 331 | 331 | -1.49% | 200 | 25億1096万 | +0.3% |
| 11/20 | 330 | 336 | 330 | 336 | +2.44% | 1,100 | 25億4889万 | +1.82% |
| 11/19 | 336 | 336 | 328 | 328 | -2.67% | 1,100 | 24億8820万 | -0.3% |
| 11/18 | 337 | 342 | 337 | 337 | +0.3% | 2,400 | 25億5648万 | +2.43% |
| 11/15 | 336 | 336 | 336 | 336 | +0.6% | 800 | 25億4889万 | +2.44% |
| 11/14 | 326 | 334 | 326 | 334 | +2.45% | 2,900 | 25億3372万 | +1.83% |
| 11/12 | 333 | 333 | 320 | 326 | -0.31% | 3,700 | 24億7303万 | -0.61% |
| 11/11 | 326 | 327 | 326 | 327 | -0.3% | 1,300 | 24億8062万 | -0.3% |
| 11/07 | 328 | 328 | 328 | 328 | 0% | 200 | 24億8820万 | +0.31% |
| 11/06 | 330 | 330 | 328 | 328 | -2.67% | 700 | 24億8820万 | +0.31% |
| 11/05 | 325 | 337 | 325 | 337 | 0% | 1,600 | 25億5648万 | +3.06% |
| 10/31 | 337 | 337 | 337 | 337 | +0.6% | 2,600 | 25億5648万 | +3.37% |
| 10/30 | (IR情報)15:00 平成26年3月期第2四半期決算短信〔日本基準〕(非連結) |
| 10/30 | 334 | 335 | 332 | 335 | +0.6% | 1,400 | 25億4131万 | +3.08% |
| 10/29 | 333 | 333 | 333 | 333 | +1.52% | 4,300 | 25億2613万 | +2.78% |
| 10/28 | (IR情報)15:00 業績予想の修正に関するお知らせ |
| 10/28 | 320 | 328 | 315 | 328 | +1.55% | 4,100 | 24億8820万 | +1.23% |
| 10/24 | 323 | 323 | 323 | 323 | 0% | 600 | 24億5027万 | -0.31% |
| 10/17 | 323 | 323 | 323 | 323 | 0% | 100 | 24億5027万 | 0% |
| 10/16 | 325 | 325 | 323 | 323 | -0.62% | 1,000 | 24億5027万 | 0% |
| 10/15 | 331 | 331 | 325 | 325 | -1.22% | 1,900 | 24億6545万 | +0.62% |
| 10/11 | 329 | 329 | 329 | 329 | +1.23% | 100 | 24億9579万 | +1.86% |
| 10/10 | 325 | 325 | 325 | 325 | -1.52% | 300 | 24億6545万 | +0.62% |
| 10/09 | 330 | 330 | 330 | 330 | 0% | 1,000 | 25億338万 | +2.48% |
| 10/08 | 323 | 330 | 323 | 330 | +0.61% | 600 | 25億338万 | +2.8% |
| 10/07 | 328 | 328 | 328 | 328 | -0.3% | 200 | 24億8820万 | +2.18% |
| 10/04 | 329 | 329 | 329 | 329 | +1.86% | 600 | 24億9579万 | +2.81% |
| 10/03 | 323 | 323 | 323 | 323 | 0% | 100 | 24億5027万 | +1.25% |
| 10/02 | 326 | 326 | 323 | 323 | -1.82% | 500 | 24億5027万 | +1.25% |
| 10/01 | 323 | 329 | 323 | 329 | +1.86% | 500 | 24億9579万 | +3.13% |
| 09/30 | 328 | 328 | 323 | 323 | -0.92% | 2,300 | 24億5027万 | +1.57% |
| 09/27 | 324 | 327 | 323 | 326 | +1.24% | 3,000 | 24億7303万 | +2.52% |
| 09/26 | 322 | 322 | 317 | 322 | -0.92% | 1,300 | 24億4269万 | +1.26% |
| 09/25 | 321 | 325 | 321 | 325 | +1.56% | 1,400 | 24億6545万 | +2.52% |
| 09/24 | 324 | 325 | 320 | 320 | -1.54% | 600 | 24億2752万 | +1.27% |
| 09/20 | 315 | 325 | 315 | 325 | +2.52% | 2,000 | 24億6545万 | +2.85% |
| 09/18 | 320 | 320 | 317 | 317 | -0.94% | 2,300 | 24億476万 | +0.63% |
| 09/17 | 320 | 320 | 320 | 320 | +1.91% | 100 | 24億2752万 | +1.59% |
| 09/13 | 327 | 327 | 314 | 314 | -0.32% | 1,800 | 23億8200万 | -0.32% |
| 09/12 | 315 | 315 | 315 | 315 | -1.56% | 1,000 | 23億8959万 | +0.32% |
| 09/11 | 323 | 323 | 320 | 320 | -0.93% | 1,200 | 24億2752万 | +1.91% |