| 2018 |
| 08/21 | 2,525 | 2,600 | 2,505 | 2,590 | +2.37% | 92,600 | 650億1469万 | -17.17% |
| 08/20 | 2,680 | 2,695 | 2,525 | 2,530 | -6.99% | 185,000 | 635億856万 | -19.61% |
| 08/17 | 2,700 | 2,735 | 2,630 | 2,720 | +1.49% | 139,600 | 682億7798万 | -14.2% |
| 08/16 | 2,790 | 2,790 | 2,645 | 2,680 | -5.3% | 204,200 | 672億7389万 | -15.83% |
| 08/15 | 3,045 | 3,055 | 2,810 | 2,830 | -6.6% | 160,800 | 710億3922万 | -11.53% |
| 08/14 | 3,085 | 3,175 | 2,965 | 3,030 | -2.42% | 123,400 | 760億5966万 | -5.43% |
| 08/13 | 3,225 | 3,225 | 3,065 | 3,105 | -3.87% | 129,200 | 779億4233万 | -2.91% |
| 08/10 | 15:00 平成30年12月期第2四半期決算短信[日本基準](連結) |
| 08/10 | 15:00 プライムシリコンウェーハ製造販売事業の新会社設立ならびに工場移設先決定に関するお知らせ |
| 08/10 | 15:00 平成30年12月期第2四半期決算説明資料 |
| 08/10 | 3,350 | 3,350 | 3,205 | 3,230 | -2.42% | 94,200 | 810億8010万 | +1.44% |
| 08/09 | 3,305 | 3,330 | 3,245 | 3,310 | +1.38% | 62,200 | 830億8828万 | +4.81% |
| 08/08 | 3,195 | 3,270 | 3,190 | 3,265 | +3.82% | 92,000 | 819億5868万 | +4.28% |
| 08/07 | 3,135 | 3,245 | 3,125 | 3,145 | -1.26% | 103,600 | 789億4641万 | +1.06% |
| 08/06 | 3,455 | 3,465 | 3,160 | 3,185 | -7.14% | 222,200 | 799億5050万 | +2.81% |
| 08/03 | 15:15 平成30年12月期第2四半期連結累計期間の業績予想の修正に関するお知らせ |
| 08/03 | 3,450 | 3,470 | 3,345 | 3,430 | +0.15% | 96,000 | 861億54万 | +11.18% |
| 08/02 | 3,415 | 3,460 | 3,395 | 3,425 | +0.44% | 94,800 | 859億7503万 | +12.04% |
| 08/01 | 3,385 | 3,420 | 3,315 | 3,410 | +1.49% | 94,800 | 855億9850万 | +12.47% |
| 07/31 | 3,285 | 3,375 | 3,250 | 3,360 | +2.91% | 89,000 | 843億4339万 | +11.81% |
| 07/30 | 3,260 | 3,330 | 3,240 | 3,265 | -1.36% | 120,200 | 819億5868万 | +9.6% |
| 07/27 | 3,350 | 3,365 | 3,255 | 3,310 | -0.45% | 68,000 | 830億8828万 | +11.75% |
| 07/26 | 3,255 | 3,340 | 3,240 | 3,325 | +3.74% | 141,400 | 834億6481万 | +12.94% |
| 07/25 | 3,285 | 3,285 | 3,185 | 3,205 | -3.03% | 70,400 | 804億5255万 | +9.57% |
| 07/24 | 3,245 | 3,330 | 3,215 | 3,305 | +4.26% | 148,400 | 829億6277万 | +13.46% |
| 07/23 | 3,070 | 3,200 | 3,070 | 3,170 | +1.6% | 99,400 | 795億2325万 | +9.27% |
| 07/20 | 3,165 | 3,165 | 3,085 | 3,120 | -1.42% | 59,800 | 782億6894万 | +7.62% |
| 07/19 | 3,070 | 3,200 | 3,070 | 3,165 | +3.26% | 111,600 | 793億9782万 | +9.03% |
| 07/18 | 16:30 SBI AI&Blockchainファンドへの出資に関するお知らせ |
| 07/18 | 3,080 | 3,180 | 3,030 | 3,065 | -0.49% | 86,000 | 768億8920万 | +5.36% |
| 07/17 | 3,135 | 3,135 | 3,040 | 3,080 | -0.81% | 83,200 | 772億6549万 | +5.7% |
| 07/13 | 3,125 | 3,160 | 3,090 | 3,105 | +0.49% | 93,600 | 778億9265万 | +6.55% |
| 07/12 | 3,035 | 3,110 | 2,955 | 3,090 | +1.48% | 139,600 | 775億1635万 | +5.89% |
| 07/11 | 2,945 | 3,105 | 2,860 | 3,045 | +3.4% | 190,000 | 763億8747万 | +4.32% |
| 07/10 | 2,895 | 2,975 | 2,865 | 2,945 | +2.08% | 157,200 | 738億7885万 | +0.79% |
| 07/09 | 2,770 | 2,900 | 2,715 | 2,885 | +4.72% | 103,800 | 723億7368万 | -1.6% |
| 07/06 | 2,650 | 2,755 | 2,615 | 2,755 | +6.17% | 113,200 | 691億1248万 | -6.45% |
| 07/05 | 2,650 | 2,685 | 2,580 | 2,595 | -1.33% | 156,200 | 650億9868万 | -12.42% |
| 07/04 | 2,730 | 2,745 | 2,615 | 2,630 | -5.4% | 147,400 | 659億7670万 | -12.04% |
| 07/03 | 2,845 | 2,895 | 2,755 | 2,780 | -0.54% | 60,200 | 697億3963万 | -7.7% |
| 07/02 | 2,850 | 2,935 | 2,785 | 2,795 | -2.1% | 100,000 | 701億1592万 | -7.82% |
| 06/29 | 2,785 | 2,880 | 2,780 | 2,855 | +4.39% | 144,600 | 716億2110万 | -6.55% |
| 06/28 | 2,800 | 2,800 | 2,660 | 2,735 | -2.67% | 126,800 | 686億1075万 | -11.06% |
| 06/27 | 2,730 | 2,845 | 2,730 | 2,810 | +2.93% | 99,800 | 704億9222万 | -9.35% |
| 06/26 | 2,650 | 2,750 | 2,650 | 2,730 | +0.37% | 175,800 | 684億8532万 | -12.61% |
| 06/25 | 2,770 | 2,820 | 2,715 | 2,720 | -3.55% | 90,000 | 682億3446万 | -13.79% |
| 06/22 | 2,810 | 2,890 | 2,780 | 2,820 | -1.91% | 138,200 | 707億4308万 | -11.4% |
| 06/21 | 2,810 | 2,955 | 2,780 | 2,875 | +1.41% | 162,600 | 721億2282万 | -10.32% |
| 06/20 | 2,865 | 2,890 | 2,665 | 2,835 | -2.74% | 355,400 | 711億1937万 | -12.07% |
| 06/19 | 2,970 | 3,040 | 2,820 | 2,915 | -2.67% | 324,200 | 731億2627万 | -10.06% |
| 06/18 | 3,125 | 3,155 | 2,960 | 2,995 | -4.62% | 231,600 | 751億3316万 | -8.1% |
| 06/15 | 3,200 | 3,230 | 3,130 | 3,140 | -2.48% | 183,800 | 787億7066万 | -4.3% |
| 06/14 | 3,270 | 3,320 | 3,210 | 3,220 | -2.87% | 131,800 | 807億7756万 | -2.34% |
| 06/13 | 3,235 | 3,320 | 3,220 | 3,315 | +4.08% | 228,000 | 831億6075万 | +0.27% |
| 06/12 | 3,085 | 3,195 | 3,085 | 3,185 | +3.24% | 103,000 | 798億9954万 | -3.81% |
| 06/11 | 3,150 | 3,180 | 3,020 | 3,085 | -3.29% | 245,000 | 773億9092万 | -7.08% |
| 06/08 | 3,115 | 3,240 | 3,100 | 3,190 | +2.24% | 198,200 | 800億2497万 | -4.35% |
| 06/07 | 3,145 | 3,175 | 3,100 | 3,120 | -0.32% | 107,200 | 782億6894万 | -6.87% |
| 06/06 | 3,175 | 3,200 | 3,120 | 3,130 | -1.88% | 97,600 | 785億1980万 | -6.93% |
| 06/05 | 3,220 | 3,245 | 3,160 | 3,190 | -0.31% | 89,200 | 800億2497万 | -5.54% |
| 06/04 | 3,285 | 3,285 | 3,160 | 3,200 | -0.31% | 126,600 | 802億7584万 | -5.49% |
| 06/01 | 3,250 | 3,275 | 3,195 | 3,210 | -1.83% | 115,000 | 805億2670万 | -5.42% |
| 05/31 | 3,220 | 3,295 | 3,205 | 3,270 | +3.15% | 358,800 | 820億3187万 | -3.8% |
| 05/30 | 3,220 | 3,250 | 3,150 | 3,170 | -3.5% | 204,800 | 795億2325万 | -6.82% |
| 05/29 | 3,360 | 3,380 | 3,245 | 3,285 | -2.38% | 198,800 | 824億816万 | -3.69% |
| 05/28 | 3,360 | 3,420 | 3,350 | 3,365 | +0.15% | 86,800 | 844億1506万 | -1.67% |
| 05/25 | 3,350 | 3,405 | 3,325 | 3,360 | +0.15% | 107,400 | 842億8963万 | -1.93% |
| 05/24 | 3,395 | 3,395 | 3,345 | 3,355 | -1.61% | 111,200 | 841億6420万 | -2.13% |
| 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% |
