| 2026 |
| 06/24 | 1,915 | 1,932 | 1,899 | 1,922 | +1.69% | 52,100 | 1096億7167万 | +5.9% |
| 06/23 | 1,855 | 1,897 | 1,855 | 1,890 | +1.29% | 52,500 | 1078億4571万 | +4.3% |
| 06/22 | 1,850 | 1,882 | 1,833 | 1,866 | +1.25% | 59,600 | 1064億7624万 | +2.98% |
| 06/19 | 1,852 | 1,885 | 1,831 | 1,843 | -0.49% | 82,200 | 1051億6383万 | +1.82% |
| 06/18 | 1,856 | 1,910 | 1,850 | 1,852 | -1.33% | 80,100 | 1056億7738万 | +2.26% |
| 06/17 | 1,870 | 1,899 | 1,870 | 1,877 | +0.81% | 48,700 | 1071億391万 | +3.64% |
| 06/16 | 1,865 | 1,865 | 1,838 | 1,862 | -0.16% | 40,300 | 1062億4799万 | +2.99% |
| 06/15 | 1,886 | 1,908 | 1,864 | 1,865 | +1.03% | 56,300 | 1064億1918万 | +3.5% |
| 06/12 | 1,802 | 1,852 | 1,779 | 1,846 | +0.27% | 72,400 | 1053億3501万 | +2.67% |
| 06/11 | 1,829 | 1,846 | 1,801 | 1,841 | +1.49% | 50,400 | 1050億4971万 | +2.05% |
| 06/10 | 1,787 | 1,828 | 1,785 | 1,814 | +1.51% | 49,400 | 1035億905万 | +0.17% |
| 06/09 | 1,820 | 1,849 | 1,787 | 1,787 | -1.11% | 68,400 | 1019億6840万 | -1.76% |
| 06/08 | 1,802 | 1,836 | 1,788 | 1,807 | +0.22% | 57,000 | 1031億962万 | -1.09% |
| 06/05 | 1,784 | 1,819 | 1,750 | 1,803 | +2.27% | 41,000 | 1028億8138万 | -1.8% |
| 06/04 | (IR情報)20:00 Siamgas and Petrochemicals Public Company Limitedの持分法適用関連会社化に関するお知らせ |
| 06/04 | 1,756 | 1,797 | 1,748 | 1,763 | -0.62% | 49,400 | 1005億9893万 | -4.39% |
| 06/03 | 1,737 | 1,777 | 1,724 | 1,774 | +1.78% | 40,800 | 1012億2660万 | -4.31% |
| 06/02 | 1,722 | 1,756 | 1,695 | 1,743 | +1.22% | 52,100 | 994億5771万 | -6.59% |
| 06/01 | 1,760 | 1,760 | 1,700 | 1,722 | -2.16% | 77,900 | 982億5942万 | -8.4% |
| 05/29 | 1,768 | 1,805 | 1,760 | 1,760 | -1.46% | 50,900 | 1004億2775万 | -7.12% |
| 05/28 | 1,781 | 1,795 | 1,750 | 1,786 | +0.28% | 47,700 | 1019億1134万 | -6.44% |
| 05/27 | 1,768 | 1,784 | 1,750 | 1,781 | +0.74% | 50,600 | 1016億2603万 | -7.48% |
| 05/26 | 1,727 | 1,791 | 1,727 | 1,768 | +1.32% | 63,400 | 1008億8424万 | -8.96% |
| 05/25 | 1,800 | 1,802 | 1,728 | 1,745 | -3.43% | 67,700 | 995億7183万 | -11.01% |
| 05/22 | 1,860 | 1,860 | 1,776 | 1,807 | -2.64% | 62,800 | 1031億962万 | -8.78% |
| 05/21 | 1,854 | 1,895 | 1,850 | 1,856 | +0.32% | 50,500 | 1059億562万 | -7.15% |
| 05/20 | 1,882 | 1,916 | 1,825 | 1,850 | -1.18% | 78,400 | 1055億6326万 | -8.19% |
| 05/19 | 1,865 | 1,888 | 1,857 | 1,872 | +2.02% | 88,300 | 1068億1860万 | -8.01% |
| 05/18 | 1,870 | 1,899 | 1,812 | 1,835 | -1.87% | 81,600 | 1047億734万 | -10.75% |
| 05/15 | 1,820 | 1,870 | 1,816 | 1,870 | +1.96% | 95,100 | 1067億448万 | -10.14% |
| 05/14 | 1,798 | 1,869 | 1,798 | 1,834 | +2% | 139,800 | 1046億5028万 | -12.87% |
| 05/13 | 1,739 | 1,803 | 1,739 | 1,798 | +4.47% | 144,600 | 1025億9607万 | -15.59% |
| 05/12 | 1,772 | 1,780 | 1,720 | 1,721 | -2.71% | 62,500 | 982億236万 | -20.21% |
| 05/11 | 1,891 | 1,940 | 1,752 | 1,769 | -11.19% | 154,700 | 1009億4130万 | -19.08% |
| 05/08 | (IR情報)16:00 新任取締役候補者の選任および取締役の退任に関するお知らせ |
| 05/08 | (IR情報)16:00 2026年3月期決算短信〔日本基準〕(連結) |
| 05/08 | 2,005 | 2,020 | 1,968 | 1,992 | -0.9% | 72,400 | 1136億6595万 | -9.91% |
| 05/07 | 2,023 | 2,042 | 2,002 | 2,010 | -0.1% | 49,800 | 1146億9305万 | -9.78% |
| 05/01 | (IR情報)15:00 人事異動に関するお知らせ |
| 05/01 | 2,008 | 2,020 | 1,987 | 2,012 | +0.85% | 51,200 | 1148億718万 | -10.3% |
| 04/30 | 2,008 | 2,017 | 1,962 | 1,995 | -2.11% | 82,200 | 1138億3713万 | -11.61% |
| 04/28 | 1,988 | 2,038 | 1,988 | 2,038 | +2.26% | 56,400 | 1162億9077万 | -10.3% |
| 04/27 | 2,030 | 2,030 | 1,988 | 1,993 | -1.82% | 50,900 | 1137億2301万 | -12.63% |
| 04/24 | 2,071 | 2,080 | 2,027 | 2,030 | -1.98% | 40,000 | 1158億3428万 | -11.39% |
| 04/23 | 2,062 | 2,078 | 2,048 | 2,071 | -0.29% | 47,500 | 1181億7379万 | -9.96% |
| 04/22 | (5%ルール)みずほ信託銀行(1.2%)みずほ証券(2.37%)アセットマネジメントOne(0.83%)みずほ銀行(4.63%) |
| 04/22 | 2,112 | 2,117 | 2,077 | 2,077 | -1.89% | 44,200 | 1185億1616万 | -10.09% |
| 04/21 | 2,132 | 2,138 | 2,107 | 2,117 | +0.43% | 33,800 | 1207億9860万 | -8.67% |
| 04/20 | 2,200 | 2,200 | 2,108 | 2,108 | -2.95% | 41,600 | 1202億8505万 | -9.22% |
| 04/17 | 2,209 | 2,226 | 2,171 | 2,172 | -1.81% | 28,100 | 1239億3697万 | -6.66% |
| 04/16 | 2,257 | 2,257 | 2,211 | 2,212 | -1.03% | 28,100 | 1262億1942万 | -5.02% |
| 04/15 | 2,241 | 2,268 | 2,229 | 2,235 | -0.27% | 31,600 | 1275億3183万 | -4.04% |
| 04/14 | 2,262 | 2,273 | 2,222 | 2,241 | -0.75% | 35,600 | 1278億7420万 | -3.74% |
| 04/13 | 2,309 | 2,309 | 2,245 | 2,258 | -0.22% | 50,100 | 1288億4424万 | -2.88% |
| 04/10 | 2,370 | 2,382 | 2,253 | 2,263 | -3.5% | 47,300 | 1291億2954万 | -2.54% |
| 04/09 | 2,406 | 2,427 | 2,323 | 2,345 | -2.41% | 43,600 | 1338億856万 | +1.03% |
| 04/08 | 2,497 | 2,501 | 2,403 | 2,403 | -2.28% | 50,400 | 1371億1811万 | +3.8% |
| 04/07 | 2,492 | 2,492 | 2,453 | 2,459 | -0.04% | 22,500 | 1403億1354万 | +6.45% |
| 04/06 | 2,479 | 2,497 | 2,460 | 2,460 | -0.77% | 27,500 | 1403億7060万 | +6.68% |
| 04/03 | 2,454 | 2,479 | 2,439 | 2,479 | +1.02% | 24,200 | 1414億5477万 | +7.74% |
| 04/02 | 2,454 | 2,487 | 2,440 | 2,454 | -0.49% | 33,100 | 1400億2824万 | +6.93% |
| 04/01 | 2,430 | 2,466 | 2,426 | 2,466 | +3.05% | 67,300 | 1407億1297万 | +7.73% |
| 03/31 | 2,381 | 2,447 | 2,381 | 2,393 | -0.25% | 51,000 | 1365億4750万 | +4.82% |
| 03/30 | 2,251 | 2,402 | 2,251 | 2,399 | -0.21% | 82,400 | 1368億8987万 | +5.22% |
| 03/27 | 2,362 | 2,411 | 2,362 | 2,404 | +1.82% | 101,300 | 1371億7518万 | +5.53% |
| 03/26 | (IR情報)16:00 組織変更および人事異動に関するお知らせ |
| 03/26 | 2,356 | 2,375 | 2,313 | 2,361 | +0.25% | 49,000 | 1347億2154万 | +3.73% |
| 03/25 | 2,356 | 2,370 | 2,342 | 2,355 | +3.56% | 79,600 | 1343億7918万 | +3.61% |
| 03/24 | 2,282 | 2,292 | 2,248 | 2,274 | +1.56% | 44,500 | 1297億5722万 | +0.18% |
| 03/23 | 2,217 | 2,243 | 2,205 | 2,239 | -1.24% | 63,400 | 1277億6007万 | -1.37% |
| 03/19 | (IR情報)17:00 株主優待制度の内容一部変更に関するお知らせ |
| 03/19 | 2,284 | 2,316 | 2,267 | 2,267 | -2.2% | 87,200 | 1293億5779万 | -0.31% |
| 03/18 | 2,289 | 2,330 | 2,289 | 2,318 | +2.39% | 48,100 | 1322億6791万 | +1.71% |
| 03/17 | 2,238 | 2,281 | 2,238 | 2,264 | +1.48% | 37,700 | 1291億8660万 | -0.57% |
| 03/16 | 2,215 | 2,260 | 2,201 | 2,231 | +0.72% | 56,600 | 1273億358万 | -1.98% |
| 03/13 | 2,189 | 2,239 | 2,189 | 2,215 | -0.36% | 49,000 | 1263億9060万 | -2.68% |
| 03/12 | 2,227 | 2,234 | 2,195 | 2,223 | +0.14% | 46,000 | 1268億4709万 | -2.29% |
| 03/11 | 2,223 | 2,258 | 2,215 | 2,220 | 0% | 32,300 | 1266億7591万 | -2.33% |
| 03/10 | 2,186 | 2,251 | 2,160 | 2,220 | +2.78% | 53,100 | 1266億7591万 | -2.2% |
| 03/09 | 2,069 | 2,169 | 2,062 | 2,160 | -0.41% | 59,400 | 1232億5224万 | -4.76% |
| 03/06 | 2,206 | 2,223 | 2,148 | 2,169 | -3.26% | 54,100 | 1237億6579万 | -4.37% |
| 03/05 | 2,237 | 2,292 | 2,224 | 2,242 | +1.68% | 56,900 | 1279億3126万 | -1.15% |
| 03/04 | 2,234 | 2,271 | 2,162 | 2,205 | -3.46% | 62,000 | 1258億1999万 | -2.69% |
| 03/03 | 2,312 | 2,330 | 2,270 | 2,284 | -2.68% | 70,400 | 1303億2783万 | +0.75% |
| 03/02 | 2,345 | 2,365 | 2,280 | 2,347 | 0% | 51,200 | 1339億2269万 | +3.62% |
| 02/27 | 2,339 | 2,362 | 2,301 | 2,347 | +1.73% | 72,300 | 1339億2269万 | +3.85% |
| 02/26 | 2,343 | 2,343 | 2,301 | 2,307 | -0.17% | 46,900 | 1316億4024万 | +2.26% |
| 02/25 | (IR情報)18:00 人事異動に関するお知らせ |
| 02/25 | 2,354 | 2,354 | 2,291 | 2,311 | -0.9% | 50,600 | 1318億6848万 | +2.62% |
| 02/24 | 2,327 | 2,362 | 2,262 | 2,332 | +1.61% | 53,900 | 1330億6677万 | +3.69% |
| 02/20 | (5%ルール)みずほ信託銀行(1.2%)みずほ証券(2.35%)アセットマネジメントOne(0.87%)みずほ銀行(4.63%) |
| 02/20 | 2,334 | 2,335 | 2,276 | 2,295 | -3.16% | 44,200 | 1309億5550万 | +2.27% |
| 02/19 | 2,344 | 2,371 | 2,327 | 2,370 | +1.11% | 38,200 | 1352億3509万 | +5.71% |
| 02/18 | 2,331 | 2,376 | 2,322 | 2,344 | +2.27% | 42,700 | 1337億5150万 | +4.83% |
| 02/17 | 2,289 | 2,331 | 2,264 | 2,292 | +0.97% | 33,000 | 1307億8432万 | +2.73% |
| 02/16 | 2,274 | 2,323 | 2,251 | 2,270 | +0.18% | 44,500 | 1295億2897万 | +1.93% |
| 02/13 | 2,365 | 2,385 | 2,251 | 2,266 | -4.02% | 37,000 | 1293億73万 | +1.84% |
| 02/12 | 2,230 | 2,397 | 2,230 | 2,361 | -0.8% | 70,700 | 1347億2154万 | +6.21% |
| 02/10 | (IR情報)16:00 配当予想の修正(設立100周年記念配当を含む期末配当)に関するお知らせ |
| 02/10 | 2,299 | 2,380 | 2,299 | 2,380 | +4.52% | 55,000 | 1358億571万 | +7.21% |
| 02/09 | 2,281 | 2,285 | 2,247 | 2,277 | +2.06% | 44,600 | 1299億2840万 | +2.89% |
| 02/06 | 2,221 | 2,265 | 2,205 | 2,231 | +0.27% | 41,500 | 1273億358万 | +0.95% |
| 02/05 | 2,219 | 2,250 | 2,215 | 2,225 | +1.18% | 42,500 | 1269億6122万 | +0.68% |
| 02/04 | 2,186 | 2,216 | 2,169 | 2,199 | +1.01% | 31,300 | 1254億7762万 | -0.41% |
| 02/03 | 2,141 | 2,200 | 2,140 | 2,177 | +2.25% | 34,600 | 1242億2228万 | -1.31% |
| 02/02 | 2,198 | 2,207 | 2,129 | 2,129 | -1.93% | 34,500 | 1214億8334万 | -3.49% |
| 01/30 | 2,163 | 2,194 | 2,159 | 2,171 | -0.18% | 30,700 | 1238億7991万 | -1.68% |
| 01/29 | 2,167 | 2,193 | 2,130 | 2,175 | +0.09% | 35,100 | 1241億816万 | -1.41% |
| 01/28 | 2,189 | 2,197 | 2,152 | 2,173 | -0.73% | 26,800 | 1239億9403万 | -1.41% |
| 01/27 | 2,194 | 2,194 | 2,161 | 2,189 | -1% | 34,900 | 1249億701万 | -0.68% |
| 01/26 | (IR情報)13:00 組織変更および人事異動に関するお知らせ |