| 2018 |
| 05/23 | 3,510 | 3,510 | 3,385 | 3,410 | -2.85% | 131,200 | 855億4394万 | -0.58% |
| 05/22 | 3,430 | 3,520 | 3,410 | 3,510 | +2.78% | 288,800 | 880億5256万 | +2.15% |
| 05/21 | 3,370 | 3,450 | 3,365 | 3,415 | +0.29% | 160,400 | 856億6937万 | -0.41% |
| 05/18 | 3,315 | 3,455 | 3,315 | 3,405 | +2.1% | 191,200 | 854億1851万 | -0.84% |
| 05/17 | 3,245 | 3,345 | 3,215 | 3,335 | +2.77% | 128,000 | 836億6247万 | -3.08% |
| 05/16 | 3,370 | 3,370 | 3,240 | 3,245 | -3.42% | 258,600 | 814億471万 | -5.91% |
| 05/15 | 3,550 | 3,550 | 3,320 | 3,360 | -5.35% | 459,000 | 842億8963万 | -2.86% |
| 05/14 | 15:00 平成30年12月期第1四半期決算説明資料 |
| 05/14 | 15:00 平成30年12月期第1四半期決算短信[日本基準](連結) |
| 05/14 | 3,520 | 3,570 | 3,480 | 3,550 | 0% | 231,800 | 890億5601万 | +2.45% |
| 05/11 | 3,445 | 3,560 | 3,445 | 3,550 | +3.05% | 209,000 | 890億5601万 | +2.63% |
| 05/10 | 3,485 | 3,500 | 3,415 | 3,445 | +0.44% | 56,800 | 864億2195万 | -0.29% |
| 05/09 | 3,410 | 3,500 | 3,385 | 3,430 | +0.73% | 114,200 | 860億4566万 | -0.75% |
| 05/08 | 3,455 | 3,480 | 3,405 | 3,405 | -2.01% | 174,000 | 854億1851万 | -1.3% |
| 05/07 | 3,575 | 3,575 | 3,475 | 3,475 | -2.39% | 106,800 | 871億7454万 | +0.81% |
| 05/02 | 3,535 | 3,590 | 3,505 | 3,560 | +3.04% | 243,800 | 893億687万 | +3.52% |
| 05/01 | 3,500 | 3,570 | 3,455 | 3,455 | -0.43% | 157,000 | 866億7282万 | +0.67% |
| 04/27 | 3,470 | 3,570 | 3,435 | 3,470 | +1.91% | 261,600 | 870億4911万 | +1.23% |
| 04/26 | 15:00 株式の取得に関するお知らせ(開示事項の経過報告) |
| 04/26 | 3,420 | 3,460 | 3,375 | 3,405 | -0.44% | 133,200 | 854億1851万 | -0.44% |
| 04/25 | 3,315 | 3,460 | 3,290 | 3,420 | +3.17% | 178,200 | 857億9480万 | -0.23% |
| 04/24 | 3,350 | 3,360 | 3,300 | 3,315 | -1.04% | 116,800 | 831億6075万 | -3.61% |
| 04/23 | 3,365 | 3,410 | 3,340 | 3,350 | -1.18% | 136,000 | 840億3877万 | -2.9% |
| 04/20 | 3,470 | 3,470 | 3,365 | 3,390 | -4.78% | 307,400 | 850億4221万 | -2.16% |
| 04/19 | 3,570 | 3,620 | 3,500 | 3,560 | +2.3% | 436,000 | 883億3784万 | +2.39% |
| 04/18 | 3,415 | 3,510 | 3,395 | 3,480 | +2.5% | 144,000 | 863億5272万 | +0.03% |
| 04/17 | 3,455 | 3,555 | 3,370 | 3,395 | -0.88% | 248,200 | 842億4353万 | -2.75% |
| 04/16 | 3,510 | 3,530 | 3,395 | 3,425 | -3.66% | 132,600 | 849億8795万 | -2.17% |
| 04/13 | 17:00 第三者割当増資における発行株式数の確定に関するお知らせ |
| 04/13 | 17:00 資金の返済に関するお知らせ |
| 04/13 | 3,430 | 3,590 | 3,375 | 3,555 | +6.76% | 262,800 | 882億1377万 | +1.34% |
| 04/12 | 3,485 | 3,485 | 3,330 | 3,330 | -6.06% | 225,800 | 826億3062万 | -5.18% |
| 04/11 | 3,575 | 3,615 | 3,515 | 3,545 | -0.7% | 308,800 | 879億6563万 | +0.82% |
| 04/10 | 3,565 | 3,600 | 3,530 | 3,570 | +0.56% | 309,600 | 885億8598万 | +0.9% |
| 04/09 | 3,470 | 3,575 | 3,450 | 3,550 | +2.16% | 195,000 | 880億8970万 | -0.08% |
| 04/06 | 3,480 | 3,515 | 3,415 | 3,475 | -1.42% | 180,000 | 862億2865万 | -2.74% |
| 04/05 | 3,450 | 3,565 | 3,430 | 3,525 | +3.83% | 287,600 | 874億6935万 | -2.35% |
| 04/04 | 3,485 | 3,485 | 3,365 | 3,395 | -1.31% | 131,600 | 842億4353万 | -6.65% |
| 04/03 | 3,380 | 3,480 | 3,350 | 3,440 | -1.15% | 202,000 | 853億6016万 | -6.09% |
| 04/02 | 17:10 新任取締役の選任及び退任取締役に関するお知らせ |
| 04/02 | 3,295 | 3,525 | 3,290 | 3,480 | +5.94% | 404,800 | 863億5272万 | -5.61% |
| 03/30 | 3,300 | 3,330 | 3,270 | 3,285 | -1.5% | 165,800 | 815億1399万 | -11.36% |
| 03/29 | 16:00 投資単位の引下げに関する考え方および方針等について |
| 03/29 | 3,275 | 3,375 | 3,260 | 3,335 | +2.3% | 225,800 | 827億5469万 | -10.4% |
| 03/28 | 3,295 | 3,370 | 3,240 | 3,260 | -3.55% | 241,200 | 808億9364万 | -12.67% |
| 03/27 | 3,415 | 3,465 | 3,335 | 3,380 | +0.45% | 170,200 | 838億7132万 | -9.6% |
| 03/26 | 3,225 | 3,365 | 3,175 | 3,365 | +3.06% | 240,000 | 834億9911万 | -10.07% |
| 03/23 | 3,355 | 3,430 | 3,255 | 3,265 | -9.43% | 671,200 | 810億1771万 | -12.82% |
| 03/22 | 3,690 | 3,700 | 3,605 | 3,605 | -2.3% | 215,600 | 806億5827万 | -3.87% |
| 03/20 | 3,525 | 3,715 | 3,525 | 3,690 | +2.5% | 139,400 | 825億6006万 | -1.13% |
| 03/19 | 3,665 | 3,680 | 3,505 | 3,600 | -3.1% | 149,400 | 805億4640万 | -2.86% |
| 03/16 | 3,705 | 3,790 | 3,655 | 3,715 | +0.68% | 361,800 | 831億1941万 | +0.81% |
| 03/15 | 3,630 | 3,730 | 3,615 | 3,690 | +1.65% | 188,800 | 825億6006万 | +0.63% |
| 03/14 | 3,685 | 3,690 | 3,615 | 3,630 | -3.46% | 211,800 | 812億1762万 | -0.49% |
| 03/13 | 17:30 発行価格及び売出価格等の決定に関するお知らせ |
| 03/13 | 3,615 | 3,810 | 3,575 | 3,760 | +3.01% | 168,400 | 841億2624万 | +3.67% |
| 03/12 | 3,720 | 3,740 | 3,595 | 3,650 | +1.39% | 127,400 | 816億6510万 | +1% |
| 03/09 | 3,665 | 3,795 | 3,545 | 3,600 | -1.37% | 276,800 | 805億4640万 | -0.19% |
| 03/08 | 3,490 | 3,710 | 3,475 | 3,650 | +6.1% | 389,000 | 816億6510万 | +1.19% |
| 03/07 | 3,865 | 3,885 | 3,390 | 3,440 | -15.79% | 614,000 | 769億6656万 | -4.58% |
| 03/06 | 15:00 2017年12月期決算・中期経営計画説明資料 |
| 03/06 | 15:00 新株式発行及び株式売出しに関するお知らせ |
| 03/06 | 4,105 | 4,145 | 4,005 | 4,085 | +3.55% | 184,000 | 913億9779万 | +13.03% |
| 03/05 | 4,095 | 4,135 | 3,880 | 3,945 | -2.71% | 233,200 | 882億6543万 | +9.58% |
| 03/02 | 3,965 | 4,175 | 3,805 | 4,055 | -8.15% | 523,000 | 907億2657万 | +13.02% |
| 03/01 | 4,200 | 4,425 | 4,150 | 4,415 | +5.24% | 273,400 | 987億8121万 | +23.74% |
| 02/28 | 4,025 | 4,350 | 4,010 | 4,195 | +4.09% | 275,200 | 938億5893万 | +18.7% |
| 02/27 | 4,010 | 4,090 | 3,905 | 4,030 | -0.25% | 157,400 | 901億6722万 | +15.11% |
| 02/26 | 4,150 | 4,225 | 3,955 | 4,040 | +1.64% | 315,800 | 903億9096万 | +16.16% |
| 02/23 | 3,725 | 3,995 | 3,695 | 3,975 | +8.31% | 454,200 | 889億3665万 | +15.25% |
| 02/22 | 3,695 | 3,725 | 3,570 | 3,670 | +1.8% | 172,800 | 821億1258万 | +7.22% |
| 02/21 | 3,515 | 3,680 | 3,505 | 3,605 | +5.56% | 325,600 | 805億6454万 | +5.78% |
| 02/20 | 3,470 | 3,470 | 3,330 | 3,415 | -1.59% | 106,800 | 763億1842万 | +0.62% |
| 02/19 | 3,445 | 3,485 | 3,355 | 3,470 | +0.87% | 93,400 | 775億4756万 | +2.42% |
| 02/16 | 3,540 | 3,600 | 3,410 | 3,440 | +2.08% | 233,000 | 768億7712万 | +1.65% |
| 02/15 | 3,165 | 3,390 | 3,115 | 3,370 | +6.48% | 207,600 | 753億1276万 | -0.27% |
| 02/14 | 3,165 | 3,300 | 3,025 | 3,165 | +4.11% | 267,800 | 707億3142万 | -6.55% |
| 02/13 | 15:00 平成29年12月期決算短信[日本基準](連結) |
| 02/13 | 3,145 | 3,180 | 3,020 | 3,040 | -1.3% | 225,200 | 679億3792万 | -10.14% |
| 02/09 | 2,950 | 3,080 | 2,930 | 3,080 | -5.23% | 248,600 | 688億3184万 | -8.98% |
| 02/08 | 3,275 | 3,355 | 3,215 | 3,250 | +0.93% | 158,200 | 726億3100万 | -3.87% |
| 02/07 | 3,345 | 3,385 | 3,205 | 3,220 | +3.54% | 198,200 | 719億6056万 | -4.48% |
| 02/06 | 3,125 | 3,215 | 2,925 | 3,110 | -9.2% | 333,400 | 695億228万 | -7.47% |
| 02/05 | 3,445 | 3,515 | 3,400 | 3,425 | -2% | 225,800 | 765億4190万 | +1.87% |
| 02/02 | 3,545 | 3,580 | 3,475 | 3,495 | -2.65% | 174,600 | 781億626万 | +4.33% |
| 02/01 | 3,635 | 3,645 | 3,490 | 3,590 | -0.42% | 192,000 | 802億2932万 | +7.58% |
| 01/31 | 3,775 | 3,875 | 3,600 | 3,605 | -1.64% | 331,600 | 805億6454万 | +8.49% |
| 01/30 | 15:00 合弁会社設立に関するお知らせ(開示事項の経過報告) |
| 01/30 | 3,695 | 3,750 | 3,575 | 3,665 | -1.48% | 184,000 | 819億542万 | +10.56% |
| 01/29 | 3,700 | 3,845 | 3,655 | 3,720 | +1.92% | 302,800 | 831億3456万 | +12.62% |
| 01/26 | 3,625 | 3,725 | 3,535 | 3,650 | +2.24% | 337,800 | 815億7020万 | +11.69% |
| 01/25 | 3,475 | 3,620 | 3,410 | 3,570 | +0.56% | 216,200 | 797億8236万 | +10.29% |
| 01/24 | 3,445 | 3,625 | 3,430 | 3,550 | +4.87% | 436,400 | 793億3540万 | +10.56% |
| 01/23 | 3,405 | 3,460 | 3,360 | 3,385 | -1.74% | 148,800 | 756億4798万 | +6.48% |
| 01/22 | 3,450 | 3,535 | 3,330 | 3,445 | +3.61% | 496,200 | 767億1326万 | +9.37% |
| 01/19 | 15:30 通期業績予想の修正に関するお知らせ |
| 01/19 | 15:30 株式の取得予定に関するお知らせ |
| 01/19 | 3,325 | 3,425 | 3,280 | 3,325 | +0.15% | 132,400 | 740億4110万 | +6.88% |
| 01/18 | 3,385 | 3,450 | 3,300 | 3,320 | +0.61% | 123,600 | 739億2976万 | +8.18% |
| 01/17 | 3,230 | 3,315 | 3,180 | 3,300 | +2.01% | 134,200 | 734億8440万 | +9.16% |
| 01/16 | 3,265 | 3,355 | 3,145 | 3,235 | -1.37% | 210,000 | 720億3698万 | +8.92% |
| 01/15 | 3,400 | 3,405 | 3,230 | 3,280 | -2.24% | 179,000 | 730億3904万 | +12.41% |
| 01/12 | 3,350 | 3,465 | 3,320 | 3,355 | +1.21% | 228,000 | 747億914万 | +17.1% |
| 01/11 | 3,525 | 3,670 | 3,195 | 3,315 | -7.27% | 624,600 | 738億1842万 | +17.8% |
| 01/10 | 3,090 | 3,575 | 3,090 | 3,575 | +16.26% | 785,200 | 796億810万 | +29.58% |
| 01/09 | 3,070 | 3,110 | 3,010 | 3,075 | +0.82% | 209,800 | 684億7410万 | +14.1% |
| 01/05 | 3,015 | 3,070 | 2,960 | 3,050 | +0.99% | 109,400 | 679億1740万 | +15.01% |
| 01/04 | 3,040 | 3,040 | 2,960 | 3,020 | +1% | 114,600 | 672億4936万 | +15.71% |
| 2017 |
| 12/29 | 2,990 | 3,240 | 2,980 | 2,990 | +0.5% | 271,400 | 665億8132万 | +16.3% |
| 12/28 | 18:10 300mm再生シリコンウェーハ生産能力増強に関するお知らせ |
| 12/28 | 3,095 | 3,160 | 2,910 | 2,975 | -5.1% | 225,400 | 662億4730万 | +17.36% |
| 12/27 | 3,065 | 3,165 | 3,040 | 3,135 | +0.64% | 255,000 | 698億1018万 | +25.4% |
| 12/26 | 3,200 | 3,275 | 3,105 | 3,115 | -2.04% | 196,000 | 693億6482万 | +26.63% |
| 12/25 | 3,225 | 3,355 | 3,180 | 3,180 | -1.7% | 205,200 | 708億1224万 | +31.4% |
| 12/22 | 3,320 | 3,375 | 3,180 | 3,235 | -4.99% | 380,200 | 720億3698万 | +36.04% |
