| 2026 |
| 03/09 | 1,449 | 1,461 | 1,432 | 1,451 | -1.29% | 1,900 | 94億2859万 | -8.74% |
| 03/06 | 1,525 | 1,525 | 1,470 | 1,470 | -3.1% | 400 | 95億5206万 | -8.13% |
| 03/05 | 1,548 | 1,548 | 1,517 | 1,517 | -1.81% | 200 | 98億5746万 | -5.78% |
| 03/04 | （IR情報）10:00 システム ディ、青森県教育委員会に中高等学校向け校務支援クラウドサービス『School Engine』及び『School Engine Web出願システム』を導入 |
| 03/04 | 1,560 | 1,589 | 1,516 | 1,545 | -2.46% | 1,300 | 100億3941万 | -4.51% |
| 03/03 | 1,580 | 1,617 | 1,566 | 1,584 | +0.19% | 1,000 | 102億9283万 | -2.46% |
| 03/02 | 1,569 | 1,621 | 1,569 | 1,581 | -1.43% | 600 | 102億7333万 | -2.95% |
| 02/27 | 1,582 | 1,647 | 1,578 | 1,604 | -0.8% | 2,500 | 104億2279万 | -1.9% |
| 02/26 | 1,676 | 1,677 | 1,579 | 1,617 | +3.39% | 7,800 | 105億726万 | -1.4% |
| 02/25 | 1,547 | 1,584 | 1,544 | 1,564 | +1.3% | 3,000 | 101億6287万 | -4.87% |
| 02/24 | 1,529 | 1,544 | 1,521 | 1,544 | +0.39% | 1,300 | 100億3291万 | -6.48% |
| 02/20 | 1,516 | 1,547 | 1,516 | 1,538 | +1.99% | 1,200 | 99億9392万 | -7.24% |
| 02/19 | 1,504 | 1,513 | 1,432 | 1,508 | +0.13% | 5,700 | 97億9898万 | -9.54% |
| 02/18 | 1,508 | 1,508 | 1,506 | 1,506 | -0.07% | 700 | 97億8598万 | -10.14% |
| 02/17 | （IR情報）10:30 (訂正)「譲渡制限付株式報酬としての自己株式の処分に関するお知らせ」の一部訂正について |
| 02/17 | 1,532 | 1,572 | 1,507 | 1,507 | -1.82% | 1,100 | 97億9248万 | -10.62% |
| 02/16 | （IR情報）17:30 譲渡制限付株式報酬としての自己株式の処分に関するお知らせ |
| 02/16 | 1,600 | 1,600 | 1,531 | 1,535 | -4.72% | 5,600 | 99億7443万 | -9.44% |
| 02/13 | 1,602 | 1,611 | 1,602 | 1,611 | -0.06% | 700 | 104億6827万 | -5.4% |
| 02/12 | 1,614 | 1,629 | 1,611 | 1,612 | -1.16% | 2,500 | 104億7477万 | -5.68% |
| 02/10 | 1,632 | 1,632 | 1,625 | 1,631 | -1.09% | 3,100 | 105億9823万 | -4.84% |
| 02/09 | 1,664 | 1,664 | 1,617 | 1,649 | -1.9% | 1,900 | 107億1520万 | -4.18% |
| 02/06 | 1,721 | 1,721 | 1,681 | 1,681 | 0% | 400 | 109億2313万 | -2.72% |
| 02/05 | 1,681 | 1,681 | 1,681 | 1,681 | 0% | 200 | 109億2313万 | -3.11% |
| 02/04 | 1,681 | 1,681 | 1,681 | 1,681 | -1.93% | 500 | 109億2313万 | -3.56% |
| 02/02 | 1,705 | 1,714 | 1,705 | 1,714 | +0.76% | 900 | 111億3757万 | -2.17% |
| 01/30 | （IR情報）15:30 支配株主等に関する事項について |
| 01/30 | （IR情報）15:30 公益財団法人財務会計基準機構への加入状況及び加入に関する考え方等に関するお知らせ |
| 01/30 | 1,680 | 1,701 | 1,680 | 1,701 | -0.87% | 400 | 110億5309万 | -3.35% |
| 01/26 | 1,716 | 1,716 | 1,716 | 1,716 | +0.12% | 800 | 111億5056万 | -3% |
| 01/23 | 1,712 | 1,714 | 1,712 | 1,714 | +0.76% | 500 | 111億3757万 | -3.49% |
| 01/22 | 1,705 | 1,705 | 1,701 | 1,701 | -0.7% | 200 | 110億5309万 | -4.97% |
| 01/21 | 1,707 | 1,713 | 1,701 | 1,713 | +0.35% | 700 | 111億3107万 | -4.99% |
| 01/20 | 1,718 | 1,718 | 1,707 | 1,707 | -0.41% | 600 | 110億9208万 | -5.95% |
| 01/19 | 1,712 | 1,714 | 1,712 | 1,714 | -1.38% | 200 | 111億3757万 | -6.19% |
| 01/16 | 1,717 | 1,739 | 1,717 | 1,738 | +1.22% | 800 | 112億9352万 | -5.49% |
| 01/15 | 1,710 | 1,717 | 1,707 | 1,717 | -0.17% | 500 | 111億5706万 | -7.29% |
| 01/14 | 1,707 | 1,736 | 1,707 | 1,720 | -0.29% | 1,700 | 111億7656万 | -7.68% |
| 01/13 | （IR情報）15:30 システム ディ、公立大学法人奈良県立医科大学に学校事務トータルシステム『Campus Plan』を導入 |
| 01/13 | 1,737 | 1,753 | 1,725 | 1,725 | -0.86% | 1,600 | 112億905万 | -8.05% |
| 01/09 | 1,758 | 1,758 | 1,740 | 1,740 | -0.74% | 600 | 113億652万 | -7.84% |
| 01/08 | 1,730 | 1,753 | 1,730 | 1,753 | +0.75% | 1,100 | 113億9099万 | -7.74% |
| 01/07 | 1,759 | 1,759 | 1,740 | 1,740 | -0.68% | 1,000 | 113億652万 | -9% |
| 01/06 | 1,735 | 1,752 | 1,727 | 1,752 | +0.98% | 1,100 | 113億8449万 | -8.84% |
| 01/05 | 1,728 | 1,738 | 1,728 | 1,735 | -0.34% | 900 | 112億7403万 | -10.24% |
| 2025 |
| 12/30 | 1,723 | 1,760 | 1,723 | 1,741 | -0.17% | 1,900 | 113億1301万 | -10.4% |
| 12/29 | 1,744 | 1,758 | 1,744 | 1,744 | -0.34% | 1,700 | 113億3251万 | -10.75% |
| 12/26 | 1,773 | 1,773 | 1,750 | 1,750 | -3.31% | 6,400 | 113億7150万 | -10.85% |
| 12/25 | 1,810 | 1,810 | 1,796 | 1,810 | 0% | 2,700 | 117億6138万 | -8.22% |
| 12/24 | 1,851 | 1,868 | 1,792 | 1,810 | -2.32% | 4,400 | 117億6138万 | -8.49% |
| 12/23 | 1,880 | 1,886 | 1,853 | 1,853 | -1.44% | 3,500 | 120億4079万 | -6.6% |
| 12/22 | 1,900 | 1,900 | 1,880 | 1,880 | -1.36% | 2,300 | 122億1624万 | -5.43% |
| 12/19 | 1,950 | 1,950 | 1,906 | 1,906 | -1.24% | 1,100 | 123億8518万 | -4.22% |
| 12/18 | 1,905 | 1,953 | 1,886 | 1,930 | +1.31% | 4,300 | 125億4114万 | -3.16% |
| 12/17 | 1,923 | 1,923 | 1,905 | 1,905 | -0.21% | 600 | 123億7869万 | -4.51% |
| 12/16 | 1,991 | 2,043 | 1,885 | 1,909 | -7.01% | 12,700 | 124億468万 | -4.45% |
| 12/15 | （IR情報）15:30 2025年10月期決算短信〔日本基準〕(連結) |
| 12/15 | （IR情報）15:30 剰余金の配当に関するお知らせ |
| 12/15 | 2,039 | 2,060 | 2,034 | 2,053 | +0.88% | 7,300 | 133億4039万 | +2.65% |
| 12/12 | 2,028 | 2,040 | 2,003 | 2,035 | +1.24% | 2,900 | 132億2343万 | +1.9% |
| 12/11 | 2,006 | 2,010 | 2,006 | 2,010 | +0.5% | 400 | 130億6098万 | +0.8% |
| 12/10 | 2,030 | 2,030 | 2,000 | 2,000 | -1.48% | 600 | 129億9600万 | +0.35% |
| 12/09 | 2,048 | 2,048 | 1,981 | 2,030 | -0.93% | 3,200 | 131億9094万 | +1.96% |
| 12/08 | 2,004 | 2,049 | 1,962 | 2,049 | +2.3% | 1,600 | 133億1440万 | +2.96% |
| 12/05 | 2,019 | 2,037 | 2,002 | 2,003 | -1.72% | 1,100 | 130億1549万 | +0.5% |
| 12/04 | 2,039 | 2,039 | 2,016 | 2,038 | +1.14% | 700 | 132億4292万 | +2.05% |
| 12/03 | 2,034 | 2,034 | 2,015 | 2,015 | -1.61% | 300 | 130億9347万 | +0.8% |
| 12/02 | 2,043 | 2,051 | 2,002 | 2,048 | -0.24% | 1,100 | 133億790万 | +2.25% |
| 12/01 | 1,999 | 2,054 | 1,968 | 2,053 | +2.65% | 5,600 | 133億4039万 | +2.39% |
| 11/28 | 2,008 | 2,008 | 1,970 | 2,000 | -1.14% | 2,100 | 129億9600万 | -0.3% |
| 11/27 | 1,982 | 2,023 | 1,945 | 2,023 | +1.61% | 6,000 | 131億4545万 | +0.85% |
| 11/26 | 2,002 | 2,048 | 1,983 | 1,991 | -0.6% | 5,000 | 129億3751万 | -0.7% |
| 11/25 | 2,004 | 2,004 | 1,966 | 2,003 | +1.83% | 7,100 | 130億1549万 | -0.05% |
| 11/21 | 1,937 | 1,967 | 1,931 | 1,967 | -0.15% | 700 | 127億8156万 | -1.7% |
| 11/20 | 1,950 | 1,970 | 1,950 | 1,970 | 0% | 1,500 | 128億106万 | -1.4% |
| 11/19 | 1,935 | 1,970 | 1,935 | 1,970 | +1.03% | 300 | 128億106万 | -1.25% |
| 11/18 | 1,950 | 1,950 | 1,950 | 1,950 | 0% | 600 | 126億7110万 | -2.16% |
| 11/17 | 1,936 | 1,959 | 1,936 | 1,950 | +0.36% | 1,400 | 126億7110万 | -2.11% |
| 11/14 | 1,942 | 1,975 | 1,942 | 1,943 | -1.87% | 600 | 126億2561万 | -2.46% |
| 11/13 | 1,994 | 2,005 | 1,960 | 1,980 | 0% | 3,900 | 128億6604万 | -0.5% |
| 11/12 | 1,969 | 1,980 | 1,940 | 1,980 | +0.25% | 400 | 128億6604万 | -0.35% |
| 11/11 | 1,969 | 1,975 | 1,969 | 1,975 | +0.3% | 300 | 128億3355万 | -0.45% |
| 11/10 | 1,989 | 2,009 | 1,969 | 1,969 | -0.1% | 800 | 127億9456万 | -0.61% |
| 11/07 | 1,951 | 1,971 | 1,937 | 1,971 | 0% | 400 | 128億755万 | -0.5% |
| 11/05 | 1,977 | 1,981 | 1,971 | 1,971 | 0% | 800 | 128億755万 | -0.55% |
| 11/04 | 1,951 | 1,995 | 1,941 | 1,971 | +1.03% | 1,300 | 128億755万 | -0.61% |
| 10/31 | 2,001 | 2,020 | 1,951 | 1,951 | -2.45% | 3,000 | 126億7759万 | -1.61% |
| 10/30 | 2,098 | 2,098 | 1,980 | 2,000 | -6.32% | 1,600 | 129億9600万 | +0.76% |
| 10/29 | （5%ルール）ミリ・キャピタル・マネジメント・エルエルシー(M…（23.31%） |
| 10/29 | 2,100 | 2,138 | 2,100 | 2,135 | +1.72% | 3,400 | 138億7323万 | +7.61% |
| 10/28 | 2,081 | 2,104 | 2,050 | 2,099 | +0.33% | 1,400 | 136億3930万 | +6.01% |
| 10/27 | 2,114 | 2,130 | 2,082 | 2,092 | -1.04% | 1,600 | 135億9381万 | +5.82% |
| 10/24 | 2,106 | 2,118 | 2,053 | 2,114 | +0.33% | 8,100 | 137億3677万 | +6.88% |
| 10/23 | 2,055 | 2,111 | 2,022 | 2,107 | +2.48% | 2,000 | 136億9128万 | +6.31% |
| 10/22 | 2,004 | 2,144 | 2,000 | 2,056 | +2.54% | 5,800 | 133億5988万 | +3.06% |
| 10/21 | （5%ルール）堂山達子（4.71%）堂山遼（4.27%）トライ（13.85%） |
| 10/21 | 2,005 | 2,025 | 2,005 | 2,005 | 0% | 2,800 | 130億2849万 | +0.1% |
| 10/20 | 2,011 | 2,017 | 1,977 | 2,005 | +1.52% | 900 | 130億2849万 | -0.25% |
| 10/17 | 1,917 | 2,036 | 1,917 | 1,975 | +3.03% | 5,000 | 128億3355万 | -2.13% |
| 10/16 | 1,892 | 1,918 | 1,885 | 1,917 | +1.32% | 1,000 | 124億5666万 | -5.29% |
| 10/15 | 1,893 | 1,896 | 1,892 | 1,892 | +0.21% | 900 | 122億9421万 | -6.94% |
| 10/14 | 1,929 | 1,969 | 1,888 | 1,888 | -2.13% | 4,500 | 122億6822万 | -7.5% |
| 10/10 | 1,914 | 1,973 | 1,914 | 1,929 | +0.78% | 1,200 | 125億3464万 | -5.86% |
| 10/09 | 1,951 | 1,964 | 1,911 | 1,914 | -1.9% | 1,200 | 124億3717万 | -6.86% |
| 10/08 | （IR情報）10:00 システム ディ、アコム株式会社に新バージョン『規程管理システム』を提供 |
| 10/08 | 1,912 | 1,964 | 1,912 | 1,951 | +2.04% | 1,200 | 126億7759万 | -5.38% |
| 10/07 | 1,885 | 1,930 | 1,885 | 1,912 | +1.49% | 1,000 | 124億2417万 | -7.5% |
| 10/06 | 1,921 | 1,921 | 1,884 | 1,884 | -1.88% | 1,000 | 122億4223万 | -9.2% |
| 10/03 | 1,882 | 1,940 | 1,824 | 1,920 | +1.53% | 5,100 | 124億7616万 | -7.83% |
| 10/02 | 1,976 | 1,976 | 1,882 | 1,891 | -4.3% | 3,800 | 122億8771万 | -9.56% |
| 10/01 | 1,998 | 1,998 | 1,975 | 1,976 | -0.55% | 1,300 | 128億4004万 | -5.86% |
| 09/29 | （IR情報）10:00 システム ディ、学校デジタルプラットフォーム『School Engine One』を発表 |
10年以上蓄積したファイナンスデータとAIを掛け合わせて、投資の意思決定を加速させるポジションです。
