| 2026 |
| 09/09 | 5,560 | 5,670 | 5,530 | 5,550 | +0.36% | 143,600 | 1474億3631万 | -7.44% |
| 09/08 | 5,840 | 5,960 | 5,530 | 5,530 | -5.95% | 166,000 | 1469億501万 | -8.5% |
| 09/08 | (空売り報告)Nomura International plc 165,769株(0.62%)+0.06% |
| 09/07 | 5,800 | 5,950 | 5,720 | 5,880 | +4.81% | 203,200 | 1562億279万 | -3.26% |
| 09/07 | (空売り報告)Nomura International plc 149,698株(0.56%)新規 |
| 09/04 | (IR情報)16:30 (開示事項の経過)連結子会社(中国プライムウェーハ事業)の組織再編検討開始のお知らせ |
| 09/04 | 5,550 | 5,730 | 5,540 | 5,610 | +0.18% | 107,400 | 1490億3022万 | -7.96% |
| 09/03 | 5,600 | 5,780 | 5,490 | 5,600 | +0.36% | 160,000 | 1487億6457万 | -8.11% |
| 09/02 | 5,550 | 5,770 | 5,540 | 5,580 | -1.24% | 195,800 | 1482億3326万 | -8.49% |
| 09/01 | 5,760 | 5,800 | 5,570 | 5,650 | -3.91% | 240,000 | 1500億9282万 | -7.74% |
| 08/31 | 5,520 | 5,940 | 5,470 | 5,880 | +4.63% | 265,600 | 1562億279万 | -4.89% |
| 08/31 | (IR情報)8:00 連結子会社(中国プライムウェーハ事業)の組織再編検討開始のお知らせ |
| 08/28 | 5,770 | 5,840 | 5,580 | 5,620 | -2.43% | 186,700 | 1492億9587万 | -9.33% |
| 08/27 | 5,820 | 5,940 | 5,740 | 5,760 | +2.49% | 291,300 | 1530億1498万 | -7.68% |
| 08/26 | 5,500 | 5,650 | 5,450 | 5,620 | +0.9% | 242,700 | 1492億9587万 | -10.34% |
| 08/25 | 5,350 | 5,590 | 5,240 | 5,570 | +2.58% | 335,500 | 1479億6761万 | -11.67% |
| 08/24 | 5,500 | 5,610 | 5,350 | 5,430 | -1.27% | 370,100 | 1442億4850万 | -14.38% |
| 08/24 | (空売り報告)Barclays Capital Securities Ltd 118,600株(0.44%)-0.09%義務消失 |
| 08/21 | 5,440 | 5,520 | 5,310 | 5,500 | -1.26% | 258,700 | 1461億806万 | -14.21% |
| 08/20 | 5,540 | 5,650 | 5,500 | 5,570 | -1.07% | 192,900 | 1479億6761万 | -14.32% |
| 08/20 | (空売り報告)Barclays Capital Securities Ltd 141,300株(0.53%)再IN |
| 08/19 | 5,750 | 5,860 | 5,600 | 5,630 | -5.38% | 275,000 | 1495億6152万 | -14.39% |
| 08/19 | (空売り報告)Barclays Capital Securities Ltd 131,400株(0.49%)-0.02%義務消失 |
| 08/18 | 6,420 | 6,450 | 5,930 | 5,950 | -6.3% | 353,400 | 1580億6235万 | -10.59% |
| 08/18 | (空売り報告)Barclays Capital Securities Ltd 136,300株(0.51%)新規 |
| 08/17 | 6,330 | 6,400 | 6,180 | 6,350 | +1.93% | 304,100 | 1686億8839万 | -5.7% |
| 08/17 | (IR情報)8:55 2026年12月期第2四半期決算説明会書き起こし公開のお知らせ |
| 08/14 | 6,350 | 6,380 | 6,060 | 6,230 | -12.25% | 767,300 | 1655億58万 | -8.17% |
| 08/13 | (IR情報)16:30 2026年12月期第2四半期決算説明資料 |
| 08/13 | (IR情報)16:30 2026年12月期第2四半期(中間期)決算短信〔日本基準〕(連結) |
| 08/13 | 6,900 | 7,210 | 6,880 | 7,100 | +4.41% | 239,200 | 1886億1222万 | +3.38% |
| 08/12 | 6,830 | 6,880 | 6,650 | 6,800 | -0.58% | 193,800 | 1806億4269万 | -1.68% |
| 08/10 | 6,730 | 6,900 | 6,640 | 6,840 | +2.86% | 194,900 | 1817億529万 | -1.77% |
| 08/07 | 6,890 | 7,030 | 6,460 | 6,650 | -2.64% | 283,300 | 1766億5792万 | -5.37% |
| 08/06 | 7,030 | 7,300 | 6,650 | 6,830 | -4.87% | 274,500 | 1814億3964万 | -3.31% |
| 08/05 | 6,950 | 7,230 | 6,870 | 7,180 | +6.69% | 313,900 | 1907億3743万 | +0.96% |
| 08/04 | 6,580 | 6,830 | 6,510 | 6,730 | +5.49% | 335,800 | 1787億8313万 | -5.42% |
| 08/03 | 6,360 | 6,560 | 6,250 | 6,380 | +1.11% | 379,500 | 1694億8535万 | -10.47% |
| 07/31 | 6,330 | 6,500 | 6,140 | 6,310 | +12.88% | 354,800 | 1676億2579万 | -11.75% |
| 07/30 | 5,740 | 6,000 | 5,440 | 5,590 | -2.1% | 310,600 | 1484億9892万 | -22.16% |
| 07/29 | 6,200 | 6,230 | 5,570 | 5,710 | -8.2% | 298,500 | 1516億8673万 | -21.03% |
| 07/28 | 6,750 | 6,780 | 6,200 | 6,220 | -12.39% | 408,300 | 1652億3493万 | -14.64% |
| 07/27 | 6,370 | 7,180 | 6,250 | 7,100 | +13.24% | 498,700 | 1886億1222万 | -3.14% |
| 07/24 | (IR情報)16:00 江西盛泰精密光学有限公司との資本提携に関する協議終了のお知らせ |
| 07/24 | 6,560 | 6,600 | 6,180 | 6,270 | -5.86% | 214,800 | 1665億6318万 | -14.52% |
| 07/23 | 6,770 | 6,790 | 6,580 | 6,660 | +2.78% | 141,800 | 1769億2357万 | -9.6% |
| 07/22 | 6,880 | 6,880 | 6,460 | 6,480 | -1.52% | 260,200 | 1721億4186万 | -12.15% |
| 07/21 | 6,550 | 6,630 | 6,340 | 6,580 | +2.02% | 240,400 | 1747億9837万 | -11.03% |
| 07/17 | 6,660 | 6,690 | 6,230 | 6,450 | -9.92% | 282,200 | 1713億4490万 | -12.99% |
| 07/16 | 7,500 | 7,600 | 7,120 | 7,160 | -7.61% | 173,700 | 1902億613万 | -3.49% |
| 07/15 | 7,610 | 7,820 | 7,510 | 7,750 | +3.89% | 178,300 | 2058億7954万 | +4.83% |
| 07/14 | 7,370 | 7,510 | 7,110 | 7,460 | -1.84% | 350,800 | 1981億7566万 | +1.58% |
| 07/13 | 7,900 | 8,300 | 7,440 | 7,600 | -4.16% | 287,200 | 2018億9477万 | +3.7% |
| 07/10 | 7,950 | 8,240 | 7,820 | 7,930 | +4.48% | 383,500 | 2106億6125万 | +8.54% |
| 07/09 | 8,450 | 8,480 | 7,430 | 7,590 | -8.77% | 377,500 | 2016億2912万 | +4.04% |
| 07/08 | 8,020 | 8,650 | 8,000 | 8,320 | 0% | 418,300 | 2210億2164万 | +14.04% |
| 07/07 | (IR情報)16:30 (訂正)「当社連結子会社「有研半導体硅材料株式会社」による「安徽晶隆半導体科技有限公司」の株式取得(子会社化)に関するお知らせ」の一部訂正について |
| 07/07 | 7,830 | 8,420 | 7,750 | 8,320 | +4.52% | 554,900 | 2210億2164万 | +14.71% |
| 07/07 | (IR情報)8:55 当社連結子会社「有研半導体硅材料株式会社」による「安徽晶隆半導体科技有限公司」の株式取得(子会社化)に関するお知らせ |
| 07/06 | 8,450 | 8,620 | 7,750 | 7,960 | -5.8% | 339,300 | 2114億5821万 | +10.51% |
| 07/03 | 7,170 | 8,450 | 7,150 | 8,450 | +11.77% | 454,400 | 2244億7511万 | +17.82% |
| 07/02 | 7,430 | 7,740 | 7,320 | 7,560 | -5.85% | 234,200 | 2008億3217万 | +6% |
| 07/01 | 7,580 | 8,170 | 7,580 | 8,030 | +10.3% | 311,900 | 2133億1776万 | +12.7% |
| 06/30 | 7,200 | 7,400 | 7,090 | 7,280 | +4% | 145,000 | 1933億9394万 | +2.85% |
| 06/29 | 6,930 | 7,030 | 6,650 | 7,000 | +0.43% | 118,500 | 1859億5571万 | -0.77% |
| 06/26 | 6,930 | 7,120 | 6,750 | 6,970 | -1.55% | 160,500 | 1851億5876万 | -1.15% |
| 06/25 | 7,140 | 7,230 | 7,030 | 7,080 | +3.36% | 160,800 | 1880億8092万 | +0.65% |
| 06/24 | 6,950 | 7,300 | 6,770 | 6,850 | -3.52% | 123,800 | 1819億7094万 | -2.42% |
| 06/23 | 7,310 | 7,510 | 7,080 | 7,100 | -2.74% | 164,400 | 1886億1222万 | +1.34% |
| 06/22 | 7,110 | 7,490 | 7,070 | 7,300 | +0.97% | 177,600 | 1939億2524万 | +4.51% |
| 06/19 | (IR情報)16:30 系統用蓄電事業への出資参画に関するお知らせ |
| 06/19 | 7,360 | 7,490 | 7,130 | 7,230 | +2.41% | 168,400 | 1920億6568万 | +3.88% |
| 06/18 | 7,000 | 7,450 | 7,000 | 7,060 | +2.32% | 167,600 | 1875億4962万 | +1.79% |
| 06/17 | 6,780 | 7,040 | 6,690 | 6,900 | -1.15% | 185,400 | 1832億9920万 | -0.42% |
| 06/16 | 7,090 | 7,200 | 6,940 | 6,980 | -0.14% | 232,700 | 1854億2441万 | +0.85% |
| 06/15 | 7,000 | 7,040 | 6,800 | 6,990 | +5.91% | 254,900 | 1856億9006万 | +1.07% |
| 06/12 | 6,630 | 6,830 | 6,550 | 6,600 | +1.38% | 238,900 | 1753億2967万 | -4.39% |
| 06/11 | 6,340 | 6,540 | 6,190 | 6,510 | -0.46% | 148,700 | 1729億3881万 | -5.92% |
| 06/10 | 6,850 | 7,070 | 6,500 | 6,540 | -7.63% | 243,600 | 1737億3576万 | -5.64% |
| 06/09 | 7,070 | 7,240 | 6,920 | 7,080 | +0.71% | 202,600 | 1880億8092万 | +2.42% |
| 06/08 | 6,700 | 7,150 | 6,570 | 7,030 | -8.1% | 272,100 | 1867億5266万 | +2.34% |
| 06/05 | 7,480 | 7,680 | 7,300 | 7,650 | +0.53% | 206,900 | 2032億2303万 | +12.5% |
| 06/04 | 7,180 | 7,690 | 7,110 | 7,610 | +4.97% | 283,300 | 2021億6042万 | +13.41% |
| 06/03 | 7,370 | 7,500 | 7,210 | 7,250 | +2.55% | 194,600 | 1925億9698万 | +9.75% |
| 06/02 | 7,050 | 7,120 | 6,670 | 7,070 | -1.67% | 194,100 | 1878億1527万 | +8.6% |
| 06/01 | 7,470 | 7,610 | 7,040 | 7,190 | -3.36% | 221,400 | 1910億308万 | +12.03% |
| 05/29 | 7,520 | 7,700 | 7,300 | 7,440 | +0.68% | 413,200 | 1976億4435万 | +17.8% |
| 05/28 | 6,700 | 7,520 | 6,540 | 7,390 | +7.88% | 418,900 | 1963億1610万 | +19.17% |
| 05/27 | 6,870 | 7,190 | 6,770 | 6,850 | +2.7% | 280,900 | 1819億7094万 | +12.63% |
| 05/26 | 7,000 | 7,000 | 6,660 | 6,670 | -3.75% | 180,900 | 1771億8923万 | +11.43% |
| 05/25 | 7,000 | 7,090 | 6,890 | 6,930 | +5.96% | 207,200 | 1840億9615万 | +17.62% |
| 05/22 | 6,840 | 6,930 | 6,500 | 6,540 | -2.97% | 171,200 | 1737億3576万 | +12.82% |
| 05/21 | 6,600 | 6,880 | 6,570 | 6,740 | +3.69% | 204,900 | 1790億4878万 | +17.96% |
| 05/20 | 6,670 | 6,670 | 6,270 | 6,500 | -1.07% | 299,200 | 1726億7316万 | +15.74% |
| 05/19 | 6,730 | 6,730 | 6,430 | 6,570 | -1.65% | 245,100 | 1745億3272万 | +19.04% |
| 05/18 | 6,740 | 6,930 | 6,560 | 6,680 | +0.6% | 295,700 | 1774億5488万 | +23.27% |
| 05/15 | 6,670 | 6,730 | 6,420 | 6,640 | -3.35% | 365,000 | 1763億9227万 | +25.26% |
| 05/14 | (IR情報)16:00 2026年12月期第1四半期決算説明質疑応答集 |
| 05/14 | (IR情報)16:00 2026年12月期第1四半期決算説明資料 |
| 05/14 | (IR情報)16:00 2026年12月期第1四半期決算短信〔日本基準〕(連結) |
| 05/14 | (IR情報)16:00 個人投資家向けIRセミナー「Kabu Berry」参加のお知らせ |
| 05/14 | 6,910 | 7,180 | 6,850 | 6,870 | +2.38% | 330,300 | 1825億225万 | +32.57% |
| 05/13 | 6,440 | 6,740 | 6,440 | 6,710 | -1.9% | 296,000 | 1782億5183万 | +32.82% |
| 05/12 | 6,700 | 7,040 | 6,680 | 6,840 | +2.4% | 286,900 | 1817億529万 | +38.83% |
| 05/12 | (空売り報告)野村證券 27,614株(0.1%)-0.58%義務消失 |
| 05/11 | (IR情報)15:30 LEシステムの手掛けるパワーコンディショナーが ドイツVDEプロトタイプ確認認証を取得 |
| 05/11 | 7,100 | 7,190 | 6,680 | 6,680 | -4.98% | 409,500 | 1774億5488万 | +39.08% |
| 05/08 | 6,710 | 7,090 | 6,650 | 7,030 | +3.69% | 404,900 | 1867億5266万 | +50.28% |
| 05/07 | 6,500 | 7,050 | 6,410 | 6,780 | +11.51% | 862,100 | 1801億1139万 | +49.14% |
| 05/01 | 5,930 | 6,150 | 5,830 | 6,080 | +1.5% | 524,500 | 1615億1582万 | +37.25% |
| 04/30 | 5,260 | 6,100 | 5,230 | 5,990 | +13.02% | 808,800 | 1591億2496万 | +38.02% |
| 04/30 | (空売り報告)野村證券 182,072株(0.68%)新規 |
| 04/28 | 5,300 | 5,340 | 5,180 | 5,300 | -1.85% | 269,500 | 1407億9504万 | +24.5% |
| 04/27 | 5,170 | 5,440 | 5,100 | 5,400 | +8% | 318,200 | 1434億5155万 | +28.69% |
| 04/24 | (IR情報)17:00 譲渡制限付株式報酬としての新株式発行に関するお知らせ |
| 04/24 | 4,870 | 5,040 | 4,835 | 5,000 | +2.88% | 206,700 | 1328億2551万 | +21.12% |
| 04/23 | 4,910 | 4,945 | 4,735 | 4,860 | +1.78% | 308,800 | 1291億639万 | +19% |
| 04/22 | 4,640 | 4,775 | 4,575 | 4,775 | +2.91% | 147,100 | 1268億4836万 | +17.67% |
| 04/21 | 4,620 | 4,705 | 4,585 | 4,640 | +1.98% | 115,200 | 1232億6207万 | +15.22% |
| 04/21 | (空売り報告)JPM Securities Japan Co Ltd. 55,603株(0.2%)-0.43%義務消失 |
| 04/20 | 4,435 | 4,590 | 4,410 | 4,550 | +2.94% | 129,100 | 1208億7121万 | +13.58% |
| 04/17 | 4,445 | 4,445 | 4,355 | 4,420 | -0.56% | 73,500 | 1174億1775万 | +10.75% |
| 04/17 | (空売り報告)JPM Securities Japan Co Ltd. 168,103株(0.63%)+0.12% |
| 04/16 | 4,400 | 4,445 | 4,330 | 4,445 | +2.66% | 133,500 | 1180億8187万 | +11.68% |
| 04/15 | 4,620 | 4,620 | 4,300 | 4,330 | -4.84% | 156,400 | 1150億2689万 | +9.01% |
| 04/13 | (空売り報告)JPM Securities Japan Co Ltd. 137,803株(0.51%)再IN |
| 04/10 | (IR情報)18:00 中国連結子会社有研半導体硅材料有限公司 2025年度報告書 一部抜粋(日本語)開示のお知らせ |
| 04/10 | (空売り報告)JPM Securities Japan Co Ltd. 123,103株(0.46%)-0.32%義務消失 |
| 04/10 | (空売り報告)モルガン・スタンレーMUFG証券 8,598株(0.03%)-0.7%義務消失 |
| 04/09 | (空売り報告)JPM Securities Japan Co Ltd. 207,403株(0.78%)-0.03% |