| 2026 |
| 09/30 | 4,665 | 4,715 | 4,580 | 4,700 | +1.73% | 93,600 | - | +0.49% |
| 09/29 | 4,655 | 4,675 | 4,565 | 4,620 | -2.84% | 131,400 | - | -1.13% |
| 09/28 | 4,780 | 4,780 | 4,715 | 4,755 | +0.21% | 112,700 | - | +1.82% |
| 09/25 | 4,675 | 4,765 | 4,675 | 4,745 | +1.93% | 82,800 | - | +1.89% |
| 09/24 | 4,785 | 4,785 | 4,655 | 4,655 | -1.79% | 130,300 | - | +0.3% |
| 09/18 | (IR情報)16:30 2027年3月期中間配当(予定)に関するお知らせ |
| 09/18 | (IR情報)16:30 岩井コスモ証券株式会社 機構の改革並びに人事異動に関するお知らせ |
| 09/18 | 4,745 | 4,765 | 4,665 | 4,740 | -0.11% | 127,000 | - | +2.42% |
| 09/17 | 4,780 | 4,810 | 4,715 | 4,745 | +0.11% | 94,000 | - | +2.79% |
| 09/16 | 4,710 | 4,800 | 4,710 | 4,740 | +0.64% | 78,800 | - | +2.98% |
| 09/15 | 4,690 | 4,750 | 4,650 | 4,710 | +0.32% | 135,000 | - | +2.7% |
| 09/14 | 4,660 | 4,695 | 4,625 | 4,695 | +0.54% | 73,400 | - | +2.74% |
| 09/11 | 4,580 | 4,700 | 4,560 | 4,670 | +0.43% | 96,900 | - | +2.55% |
| 09/10 | 4,620 | 4,660 | 4,590 | 4,650 | +1.2% | 73,900 | - | +2.38% |
| 09/09 | 4,635 | 4,675 | 4,595 | 4,595 | -1.39% | 101,900 | - | +1.48% |
| 09/08 | 4,690 | 4,780 | 4,660 | 4,660 | -1.27% | 98,700 | - | +3.28% |
| 09/07 | 4,700 | 4,730 | 4,640 | 4,720 | +0.75% | 73,900 | - | +5.05% |
| 09/04 | 4,620 | 4,690 | 4,600 | 4,685 | +2.07% | 132,400 | - | +4.76% |
| 09/03 | 4,600 | 4,630 | 4,570 | 4,590 | +0.99% | 128,000 | - | +3.19% |
| 09/02 | 4,660 | 4,665 | 4,540 | 4,545 | -3.3% | 168,500 | - | +2.67% |
| 09/01 | 4,715 | 4,765 | 4,665 | 4,700 | -0.32% | 147,200 | - | +6.58% |
| 08/31 | 4,730 | 4,755 | 4,670 | 4,715 | -1.67% | 168,200 | - | +7.28% |
| 08/28 | 4,700 | 4,820 | 4,690 | 4,795 | +1.37% | 143,900 | - | +9.55% |
| 08/27 | 4,655 | 4,740 | 4,625 | 4,730 | +2.16% | 156,000 | - | +8.54% |
| 08/26 | 4,600 | 4,650 | 4,575 | 4,630 | +1.09% | 103,400 | - | +6.73% |
| 08/25 | 4,575 | 4,605 | 4,510 | 4,580 | +0.55% | 142,300 | - | +5.9% |
| 08/24 | 4,600 | 4,605 | 4,545 | 4,555 | -0.98% | 115,800 | - | +5.68% |
| 08/21 | (IR情報)16:30 「第45回全国豊かな海づくり大会」への協賛に関するお知らせ |
| 08/21 | 4,540 | 4,650 | 4,535 | 4,600 | +1.1% | 128,000 | - | +6.9% |
| 08/20 | 4,440 | 4,550 | 4,420 | 4,550 | +2.94% | 103,400 | - | +5.91% |
| 08/19 | 4,310 | 4,465 | 4,265 | 4,420 | +1.73% | 204,600 | - | +3.2% |
| 08/18 | 4,360 | 4,415 | 4,315 | 4,345 | +0.12% | 75,500 | - | +1.66% |
| 08/17 | 4,415 | 4,420 | 4,340 | 4,340 | -2.03% | 79,300 | - | +1.69% |
| 08/14 | 4,405 | 4,485 | 4,405 | 4,430 | +0.34% | 86,600 | - | +3.97% |
| 08/13 | 4,350 | 4,430 | 4,350 | 4,415 | +1.85% | 91,900 | - | +3.83% |
| 08/12 | 4,345 | 4,350 | 4,280 | 4,335 | +0.81% | 85,600 | - | +2.24% |
| 08/10 | (IR情報)16:30 岩井コスモ証券 『熱中症ゼロ』を目指して 会社による猛暑対策支援を実施 |
| 08/10 | 4,320 | 4,325 | 4,260 | 4,300 | -0.12% | 84,700 | - | +1.61% |
| 08/07 | 4,395 | 4,395 | 4,280 | 4,305 | -1.26% | 83,400 | - | +2.01% |
| 08/06 | (IR情報)15:00 2027年3月期第1四半期決算短信〔日本基準〕(連結)(公認会計士等による期中レビューの完了) |
| 08/06 | 4,290 | 4,410 | 4,280 | 4,360 | +1.63% | 132,000 | - | +3.61% |
| 08/05 | 4,250 | 4,310 | 4,245 | 4,290 | +1.9% | 93,500 | - | +2.26% |
| 08/04 | 4,175 | 4,230 | 4,160 | 4,210 | +0.48% | 114,100 | - | +0.65% |
| 08/03 | 4,220 | 4,225 | 4,090 | 4,190 | -0.12% | 119,700 | - | +0.36% |
| 07/31 | 4,125 | 4,225 | 4,050 | 4,195 | +2.94% | 153,900 | - | +0.72% |
| 07/30 | 4,010 | 4,110 | 3,950 | 4,075 | +0.49% | 171,200 | - | -1.97% |
| 07/29 | (IR情報)15:00 国連WFP イラン周辺国緊急食料支援への寄付に関するお知らせ |
| 07/29 | 4,195 | 4,200 | 4,010 | 4,055 | -1.93% | 201,100 | - | -2.34% |
| 07/28 | 4,260 | 4,280 | 4,125 | 4,135 | -4.28% | 172,800 | - | -0.31% |
| 07/27 | 4,260 | 4,320 | 4,185 | 4,320 | +1.05% | 153,100 | - | +4.25% |
| 07/24 | (IR情報)16:30 2027年3月期第1四半期決算短信[日本基準](連結) |
| 07/24 | 4,250 | 4,305 | 4,215 | 4,275 | -0.7% | 102,300 | - | +3.49% |
| 07/23 | 4,240 | 4,345 | 4,230 | 4,305 | +1.53% | 94,600 | - | +4.41% |
| 07/22 | 4,350 | 4,350 | 4,225 | 4,240 | -1.51% | 101,200 | - | +3.14% |
| 07/21 | 4,275 | 4,330 | 4,195 | 4,305 | +2.38% | 156,700 | - | +4.9% |
| 07/17 | (IR情報)16:30 2027年3月期第1四半期連結決算速報値に関するお知らせ |
| 07/17 | 4,300 | 4,365 | 4,105 | 4,205 | -3.78% | 181,600 | - | +2.79% |
| 07/16 | 4,400 | 4,405 | 4,335 | 4,370 | -1.24% | 137,200 | - | +7.08% |
| 07/15 | 4,275 | 4,435 | 4,275 | 4,425 | +4.49% | 130,300 | - | +8.99% |
| 07/14 | 4,195 | 4,260 | 4,180 | 4,235 | +0.83% | 72,800 | - | +4.88% |
| 07/13 | 4,220 | 4,280 | 4,200 | 4,200 | +0.36% | 87,900 | - | +4.43% |
| 07/10 | 4,210 | 4,260 | 4,170 | 4,185 | +0.6% | 80,500 | - | +4.52% |
| 07/09 | 4,155 | 4,190 | 4,140 | 4,160 | -1.07% | 60,900 | - | +4.26% |
| 07/08 | 4,115 | 4,250 | 4,110 | 4,205 | +1.94% | 138,800 | - | +5.76% |
| 07/07 | 4,145 | 4,210 | 4,105 | 4,125 | 0% | 87,300 | - | +4.09% |
| 07/06 | 4,035 | 4,130 | 4,035 | 4,125 | +2.74% | 111,900 | - | +4.43% |
| 07/03 | 4,010 | 4,020 | 3,950 | 4,015 | +0.25% | 91,200 | - | +1.98% |
| 07/02 | 4,050 | 4,070 | 3,985 | 4,005 | -0.74% | 81,300 | - | +1.88% |
| 07/01 | 4,000 | 4,070 | 4,000 | 4,035 | +1.25% | 73,300 | - | +2.83% |
| 06/30 | 3,980 | 4,030 | 3,965 | 3,985 | -0.25% | 88,200 | - | +1.74% |
| 06/29 | 3,980 | 3,995 | 3,935 | 3,995 | +0.88% | 89,900 | - | +2.12% |
| 06/26 | (IR情報)16:30 岩井コスモ証券株式会社 人事異動に関するお知らせ |
| 06/26 | 4,015 | 4,020 | 3,935 | 3,960 | -0.88% | 68,600 | - | +1.38% |
| 06/25 | 3,965 | 4,005 | 3,910 | 3,995 | +1.65% | 72,400 | - | +2.54% |
| 06/24 | 3,960 | 3,995 | 3,885 | 3,930 | -0.76% | 75,400 | - | +1.18% |
| 06/23 | 4,030 | 4,045 | 3,955 | 3,960 | -1.74% | 61,600 | - | +2.27% |
| 06/22 | 4,000 | 4,045 | 3,960 | 4,030 | +0.75% | 65,300 | - | +4.43% |
| 06/19 | 4,040 | 4,060 | 3,995 | 4,000 | -1.84% | 77,800 | - | +4.11% |
| 06/18 | 4,040 | 4,095 | 4,030 | 4,075 | +1.62% | 77,900 | - | +6.45% |
| 06/17 | 4,080 | 4,100 | 4,010 | 4,010 | -1.11% | 90,500 | - | +5.19% |
| 06/16 | 3,995 | 4,105 | 3,970 | 4,055 | +1.5% | 110,200 | - | +6.71% |
| 06/15 | 4,000 | 4,040 | 3,985 | 3,995 | +1.4% | 82,400 | - | +5.58% |
| 06/12 | 3,910 | 3,945 | 3,885 | 3,940 | +2.07% | 76,400 | - | +4.43% |
| 06/11 | 3,830 | 3,875 | 3,790 | 3,860 | 0% | 58,400 | - | +2.55% |
| 06/10 | 3,870 | 3,985 | 3,845 | 3,860 | +0.52% | 83,900 | - | +2.69% |
| 06/09 | 3,830 | 3,875 | 3,805 | 3,840 | +2.13% | 71,100 | - | +2.37% |
| 06/08 | 3,760 | 3,790 | 3,725 | 3,760 | -1.83% | 57,100 | - | +0.4% |
| 06/05 | 3,825 | 3,865 | 3,810 | 3,830 | +0.79% | 48,800 | - | +2.22% |
| 06/04 | 3,830 | 3,870 | 3,785 | 3,800 | -2.06% | 49,700 | - | +1.58% |
| 06/03 | 3,840 | 3,890 | 3,800 | 3,880 | +1.57% | 89,200 | - | +3.77% |
| 06/02 | 3,770 | 3,830 | 3,735 | 3,820 | +1.06% | 82,500 | - | +2.3% |
| 06/01 | 3,840 | 3,845 | 3,770 | 3,780 | -2.33% | 97,700 | - | +1.34% |
| 05/29 | 3,860 | 3,915 | 3,850 | 3,870 | +0.78% | 62,000 | - | +3.81% |
| 05/28 | 3,855 | 3,860 | 3,775 | 3,840 | -0.39% | 61,200 | - | +3.17% |
| 05/27 | 3,850 | 3,905 | 3,820 | 3,855 | +0.13% | 106,400 | - | +3.6% |
| 05/26 | 3,845 | 3,915 | 3,815 | 3,850 | -0.13% | 82,000 | - | +3.55% |
| 05/25 | 3,730 | 3,865 | 3,705 | 3,855 | +4.05% | 167,200 | - | +3.82% |
| 05/22 | (IR情報)16:30 剰余金の配当に関するお知らせ |
| 05/22 | (IR情報)16:30 役員人事に関するお知らせ |
| 05/22 | 3,730 | 3,730 | 3,655 | 3,705 | +0.27% | 64,700 | - | -0.03% |
| 05/21 | 3,685 | 3,745 | 3,665 | 3,695 | +1.51% | 80,100 | - | -0.24% |
| 05/20 | 3,630 | 3,655 | 3,570 | 3,640 | +0.28% | 99,200 | - | -1.7% |
| 05/19 | 3,630 | 3,685 | 3,610 | 3,630 | +0.69% | 99,700 | - | -2.02% |
| 05/18 | 3,635 | 3,645 | 3,600 | 3,605 | -0.96% | 90,300 | - | -2.83% |
| 05/15 | 3,715 | 3,760 | 3,630 | 3,640 | -1.36% | 104,600 | - | -1.99% |
| 05/14 | 3,715 | 3,715 | 3,670 | 3,690 | -0.54% | 27,900 | - | -0.65% |
| 05/13 | 3,690 | 3,720 | 3,665 | 3,710 | +1.5% | 46,700 | - | 0% |
| 05/12 | 3,740 | 3,755 | 3,655 | 3,655 | -1.88% | 69,100 | - | -1.32% |
| 05/12 | (空売り報告)モルガン・スタンレーMUFG証券 0株(0%)-0.56%義務消失 |
| 05/11 | 3,690 | 3,730 | 3,680 | 3,725 | +0.54% | 47,200 | - | +0.62% |
| 05/11 | (空売り報告)モルガン・スタンレーMUFG証券 141,294株(0.56%)再IN |
| 05/08 | 3,740 | 3,740 | 3,660 | 3,705 | -0.94% | 72,900 | - | +0.35% |
| 05/07 | 3,735 | 3,765 | 3,710 | 3,740 | +2.47% | 103,200 | - | +1.52% |
| 04/30 | (IR情報)15:00 特殊詐欺被害の未然防止により奈良警察署から感謝状を受領 |