| 2018 |
| 02/09 | （IR情報）14:00 業績予想の修正、営業外収益および特別損失の計上に関するお知らせ |
| 02/09 | （IR情報）14:00 2018年3月期第3四半期(4-12月)決算補足説明資料 |
| 02/09 | （IR情報）14:00 平成30年3月期第3四半期決算短信〔日本基準〕(連結) |
| 02/08 | 2,748 | 2,824 | 2,723 | 2,799 | +0.61% | 393,400 | 1599億7621万 | -10.32% |
| 02/07 | 2,862 | 2,888 | 2,777 | 2,782 | -1.38% | 460,700 | 1590億458万 | -11.06% |
| 02/06 | 2,752 | 2,834 | 2,727 | 2,821 | -4.15% | 485,900 | 1612億3362万 | -10.1% |
| 02/05 | 3,015 | 3,030 | 2,911 | 2,943 | -6.12% | 504,200 | 1682億650万 | -6.42% |
| 02/02 | 3,125 | 3,145 | 3,085 | 3,135 | +0.32% | 193,500 | 1791億8022万 | -0.25% |
| 02/01 | 3,025 | 3,130 | 3,025 | 3,125 | +3.82% | 255,800 | 1786億867万 | -0.32% |
| 01/31 | 3,050 | 3,095 | 3,010 | 3,010 | -2.9% | 408,200 | 1720億3587万 | -3.71% |
| 01/30 | 3,235 | 3,240 | 3,080 | 3,100 | -6.06% | 471,000 | 1771億7980万 | -0.64% |
| 01/29 | 3,130 | 3,340 | 3,130 | 3,300 | +3.13% | 739,500 | 1886億1076万 | +6.18% |
| 01/26 | （IR情報）15:00 減損損失(連結)および関係会社株式評価損等(個別)の計上に関するお知らせ |
| 01/26 | 3,270 | 3,270 | 3,100 | 3,200 | -2.14% | 817,800 | 1828億9528万 | +3.66% |
| 01/25 | 3,250 | 3,280 | 3,220 | 3,270 | +2.03% | 237,800 | 1868億9611万 | +6.51% |
| 01/24 | 3,200 | 3,220 | 3,175 | 3,205 | +0.47% | 160,400 | 1831億8105万 | +5.01% |
| 01/23 | 3,200 | 3,210 | 3,175 | 3,190 | +1.11% | 193,300 | 1823億2373万 | +5.04% |
| 01/22 | 3,200 | 3,205 | 3,135 | 3,155 | -1.71% | 230,000 | 1803億2331万 | +4.44% |
| 01/19 | 3,205 | 3,220 | 3,185 | 3,210 | +0.47% | 283,100 | 1834億6683万 | +6.75% |
| 01/18 | 3,200 | 3,295 | 3,190 | 3,195 | +1.27% | 376,000 | 1826億950万 | +7% |
| 01/17 | 3,190 | 3,205 | 3,140 | 3,155 | -3.22% | 275,400 | 1803億2331万 | +6.3% |
| 01/16 | 3,220 | 3,265 | 3,200 | 3,260 | +0.62% | 232,600 | 1863億2456万 | +10.58% |
| 01/15 | 3,265 | 3,290 | 3,215 | 3,240 | +0.78% | 186,700 | 1851億8147万 | +10.77% |
| 01/12 | 3,255 | 3,270 | 3,195 | 3,215 | -1.23% | 305,200 | 1837億5260万 | +10.71% |
| 01/11 | 3,160 | 3,315 | 3,160 | 3,255 | +3.17% | 527,600 | 1860億3879万 | +12.9% |
| 01/10 | 3,150 | 3,195 | 3,145 | 3,155 | +0.64% | 275,800 | 1803億2331万 | +10.35% |
| 01/09 | 3,145 | 3,175 | 3,130 | 3,135 | +0.64% | 259,200 | 1791億8022万 | +10.54% |
| 01/05 | 3,055 | 3,125 | 3,035 | 3,115 | +2.13% | 370,600 | 1780億3712万 | +10.81% |
| 01/04 | 3,070 | 3,085 | 3,035 | 3,050 | +2.07% | 306,800 | 1743億2206万 | +9.4% |
| 01/04 | （空売り報告）GOLDMAN SACHS INTERNATIONAL 277,075株（0.48%）-0.1%義務消失 |
| 2017 |
| 12/29 | 2,992 | 3,015 | 2,974 | 2,988 | -0.9% | 281,100 | 1707億7847万 | +7.91% |
| 12/28 | 3,000 | 3,055 | 2,989 | 3,015 | +0.53% | 280,700 | 1723億2164万 | +9.56% |
| 12/27 | 2,940 | 3,030 | 2,932 | 2,999 | +3.31% | 518,400 | 1714億717万 | +9.73% |
| 12/26 | 2,929 | 2,933 | 2,902 | 2,903 | -0.58% | 172,100 | 1659億2031万 | +7% |
| 12/25 | 2,915 | 2,930 | 2,898 | 2,920 | +0.52% | 158,600 | 1668億9194万 | +8.39% |
| 12/22 | 2,892 | 2,927 | 2,884 | 2,905 | +1.08% | 338,400 | 1660億3462万 | +8.68% |
| 12/21 | 2,830 | 2,882 | 2,830 | 2,874 | +2.75% | 452,800 | 1642億6282万 | +8.33% |
| 12/20 | 2,767 | 2,805 | 2,754 | 2,797 | +1.08% | 243,500 | 1598億6190万 | +6.15% |
| 12/19 | 2,788 | 2,798 | 2,757 | 2,767 | -0.57% | 265,200 | 1581億4726万 | +5.45% |
| 12/18 | 2,828 | 2,828 | 2,765 | 2,783 | -1.49% | 367,600 | 1590億6174万 | +6.42% |
| 12/15 | 2,817 | 2,836 | 2,797 | 2,825 | +0.36% | 438,200 | 1614億6224万 | +8.4% |
| 12/14 | 2,767 | 2,830 | 2,750 | 2,815 | +0.82% | 406,900 | 1608億9069万 | +8.39% |
| 12/13 | 2,796 | 2,797 | 2,751 | 2,792 | -0.14% | 320,500 | 1595億7613万 | +7.84% |
| 12/12 | 2,724 | 2,796 | 2,720 | 2,796 | +3.52% | 420,900 | 1598億475万 | +8.33% |
| 12/11 | 2,739 | 2,751 | 2,693 | 2,701 | -1.17% | 287,100 | 1543億7504万 | +5.22% |
| 12/08 | 2,652 | 2,750 | 2,651 | 2,733 | +2.9% | 648,000 | 1562億400万 | +7.01% |
| 12/07 | 2,689 | 2,693 | 2,624 | 2,656 | -1.48% | 635,400 | 1518億308万 | +4.57% |
| 12/07 | （空売り報告）GOLDMAN SACHS INTERNATIONAL 336,175株（0.58%）-0.02% |
| 12/06 | 2,727 | 2,782 | 2,692 | 2,696 | -0.74% | 886,600 | 1540億8927万 | +6.69% |
| 12/05 | 2,650 | 2,719 | 2,638 | 2,716 | +1.04% | 645,200 | 1552億3237万 | +8.12% |
| 12/04 | （IR情報）13:00 相馬LNG基地の試運転開始について |
| 12/04 | 2,667 | 2,697 | 2,659 | 2,688 | +1.59% | 502,500 | 1536億3203万 | +7.69% |
| 12/01 | 2,597 | 2,668 | 2,597 | 2,646 | +2.84% | 685,000 | 1512億3153万 | +6.65% |
| 12/01 | （空売り報告）GOLDMAN SACHS INTERNATIONAL 343,175株（0.6%）+0.1% |
| 11/30 | 2,549 | 2,573 | 2,535 | 2,573 | +1.58% | 535,000 | 1470億5923万 | +4.3% |
| 11/29 | 2,546 | 2,567 | 2,527 | 2,533 | +0.12% | 368,600 | 1447億7304万 | +3.09% |
| 11/28 | 2,532 | 2,552 | 2,493 | 2,530 | -1.63% | 356,200 | 1446億158万 | +3.35% |
| 11/27 | 2,581 | 2,592 | 2,564 | 2,572 | +0.63% | 292,400 | 1470億208万 | +5.5% |
| 11/24 | 2,575 | 2,583 | 2,524 | 2,556 | +0.08% | 473,600 | 1460億8760万 | +5.27% |
| 11/22 | 2,529 | 2,565 | 2,514 | 2,554 | +2.57% | 497,100 | 1459億7329万 | +5.62% |
| 11/21 | 2,452 | 2,494 | 2,430 | 2,490 | +2.68% | 336,300 | 1423億1539万 | +3.41% |
| 11/20 | 2,398 | 2,428 | 2,398 | 2,425 | +1.17% | 404,300 | 1386億33万 | +0.96% |
| 11/17 | 2,410 | 2,424 | 2,386 | 2,397 | -0.17% | 402,700 | 1369億9999万 | 0% |
| 11/16 | 2,405 | 2,420 | 2,390 | 2,401 | -0.87% | 352,100 | 1372億2861万 | +0.29% |
| 11/15 | 2,463 | 2,468 | 2,411 | 2,422 | -4.23% | 502,700 | 1384億2886万 | +1.3% |
| 11/14 | 2,507 | 2,542 | 2,489 | 2,529 | -0.43% | 293,400 | 1445億4442万 | +5.95% |
| 11/13 | 2,578 | 2,579 | 2,501 | 2,540 | -0.78% | 442,200 | 1451億7313万 | +6.63% |
| 11/13 | （空売り報告）GOLDMAN SACHS INTERNATIONAL 287,127株（0.5%）再IN |
| 11/10 | （IR情報）14:00 2018年3月期第2四半期(4-9月)決算補足説明資料 |
| 11/10 | （IR情報）14:00 業績予想の修正に関するお知らせ |
| 11/10 | （IR情報）14:00 平成30年3月期第2四半期決算短信〔日本基準〕(連結) |
| 11/10 | 2,554 | 2,598 | 2,526 | 2,560 | -1.69% | 551,700 | 1463億1622万 | +7.74% |
| 11/09 | 2,590 | 2,629 | 2,570 | 2,604 | -0.23% | 447,300 | 1488億3103万 | +9.97% |
| 11/08 | 2,575 | 2,612 | 2,546 | 2,610 | +0.81% | 336,600 | 1491億7396万 | +10.59% |
| 11/07 | 2,471 | 2,592 | 2,471 | 2,589 | +6.02% | 691,800 | 1479億7371万 | +10.03% |
| 11/06 | 2,419 | 2,462 | 2,419 | 2,442 | +2.05% | 434,600 | 1395億7196万 | +4.09% |
| 11/02 | 2,377 | 2,402 | 2,361 | 2,393 | +0.8% | 280,300 | 1367億7137万 | +1.96% |
| 11/01 | （IR情報）15:00 相馬・岩沼間ガスパイプラインの供用開始について |
| 11/01 | 2,357 | 2,415 | 2,351 | 2,374 | +1.93% | 362,300 | 1356億8543万 | +1.11% |
| 10/31 | 2,325 | 2,336 | 2,312 | 2,329 | +0.39% | 234,500 | 1331億1347万 | -0.85% |
| 10/30 | 2,345 | 2,354 | 2,317 | 2,320 | -0.6% | 329,800 | 1325億9908万 | -1.19% |
| 10/27 | 2,311 | 2,341 | 2,308 | 2,334 | +1.26% | 198,500 | 1333億9924万 | -0.6% |
| 10/26 | 2,290 | 2,308 | 2,279 | 2,305 | +0.22% | 235,500 | 1317億4175万 | -1.75% |
| 10/25 | 2,326 | 2,326 | 2,293 | 2,300 | -0.82% | 227,600 | 1314億5598万 | -1.84% |
| 10/24 | 2,299 | 2,339 | 2,295 | 2,319 | +0.87% | 309,800 | 1325億4192万 | -0.86% |
| 10/23 | 2,309 | 2,313 | 2,283 | 2,299 | +0.35% | 266,500 | 1313億9883万 | -1.42% |
| 10/20 | 2,295 | 2,298 | 2,271 | 2,291 | -0.87% | 260,200 | 1309億4159万 | -1.46% |
| 10/19 | 2,307 | 2,320 | 2,301 | 2,311 | -0.17% | 135,000 | 1320億8468万 | -0.3% |
| 10/18 | 2,314 | 2,327 | 2,300 | 2,315 | +0.22% | 161,100 | 1323億1330万 | +0.26% |
| 10/17 | 2,333 | 2,333 | 2,287 | 2,310 | -1.11% | 247,400 | 1320億2753万 | +0.48% |
| 10/16 | 2,330 | 2,355 | 2,329 | 2,336 | +1.48% | 250,200 | 1335億1355万 | +2.01% |
| 10/13 | 2,300 | 2,317 | 2,280 | 2,302 | -0.35% | 271,500 | 1315億7029万 | +0.92% |
| 10/12 | 2,335 | 2,342 | 2,306 | 2,310 | -0.99% | 192,900 | 1320億2753万 | +1.67% |
| 10/11 | 2,340 | 2,355 | 2,321 | 2,333 | +0.13% | 229,000 | 1333億4209万 | +3.05% |
| 10/10 | 2,362 | 2,375 | 2,327 | 2,330 | -2.75% | 328,700 | 1331億7062万 | +3.28% |
| 10/06 | 2,396 | 2,419 | 2,389 | 2,396 | +0.29% | 206,600 | 1369億4284万 | +6.58% |
| 10/05 | 2,360 | 2,395 | 2,349 | 2,389 | +0.84% | 251,800 | 1365億4275万 | +6.84% |
| 10/04 | 2,375 | 2,389 | 2,367 | 2,369 | -1.09% | 218,300 | 1353億9966万 | +6.42% |
| 10/03 | 2,396 | 2,404 | 2,358 | 2,395 | -1.28% | 397,900 | 1368億8568万 | +8.03% |
| 10/02 | 2,399 | 2,428 | 2,379 | 2,426 | -0.21% | 364,500 | 1386億5748万 | +9.87% |
| 09/29 | 2,445 | 2,447 | 2,415 | 2,431 | -1.18% | 320,600 | 1389億4326万 | +10.5% |
| 09/28 | 2,434 | 2,463 | 2,430 | 2,460 | +2.03% | 382,200 | 1406億74万 | +12.28% |
| 09/27 | 2,377 | 2,428 | 2,355 | 2,411 | +0.71% | 316,600 | 1378億16万 | +10.65% |
| 09/26 | 2,364 | 2,410 | 2,363 | 2,394 | +3.15% | 718,900 | 1368億2853万 | +10.27% |
| 09/25 | 2,328 | 2,346 | 2,316 | 2,321 | +0.56% | 455,100 | 1326億5623万 | +7.3% |
| 09/22 | 2,268 | 2,312 | 2,265 | 2,308 | +1.14% | 459,100 | 1319億1322万 | +7% |
| 09/21 | 2,250 | 2,308 | 2,249 | 2,282 | +2.42% | 427,500 | 1304億2719万 | +5.99% |
| 09/20 | 2,210 | 2,240 | 2,210 | 2,228 | +0.81% | 235,300 | 1273億4084万 | +3.58% |
| 09/19 | 2,152 | 2,213 | 2,151 | 2,210 | +3.17% | 422,400 | 1263億1205万 | +2.74% |
| 09/15 | 2,126 | 2,146 | 2,126 | 2,142 | +0.52% | 262,100 | 1224億2553万 | -0.46% |
| 09/14 | 2,136 | 2,151 | 2,126 | 2,131 | +1% | 305,300 | 1217億9682万 | -1.21% |
| 09/13 | 2,088 | 2,114 | 2,088 | 2,110 | +1.64% | 243,200 | 1205億9657万 | -2.36% |
| 09/12 | 2,096 | 2,100 | 2,071 | 2,076 | +0.14% | 282,500 | 1186億5331万 | -4.16% |
| 09/06 | （空売り報告）GOLDMAN SACHS INTERNATIONAL 285,275株（0.49%）-0.02%義務消失 |
