| 2026 |
| 03/06 | (自社株買い)取締役会(2026年1月29日)での決議状況(取得期間2026年1月30日~2026年5月31日) |
| 03/06 | 807 | 838 | 806 | 831 | +3.49% | 643,200 | 1965億2094万 | -1.77% |
| 03/05 | 811 | 814 | 794 | 803 | +1.52% | 538,800 | 1898億9930万 | -5.64% |
| 03/04 | (IR情報)15:30 シンプレクス、SBI証券の資産管理アプリ「SBI証券Plus」を構築 |
| 03/04 | 798 | 802 | 780 | 791 | -0.75% | 692,100 | 1870億6145万 | -7.7% |
| 03/03 | 808 | 815 | 792 | 797 | -2.09% | 725,100 | 1884億8037万 | -7.65% |
| 03/02 | 803 | 817 | 788 | 814 | -5.68% | 1,320,300 | 1925億66万 | -6.33% |
| 02/27 | 862 | 873 | 849 | 863 | +3.73% | 1,192,100 | 2040億8853万 | -1.37% |
| 02/26 | 800 | 836 | 793 | 832 | +5.32% | 1,544,500 | 1967億5743万 | -5.24% |
| 02/25 | 773 | 793 | 767 | 790 | +3.4% | 1,624,200 | 1868億2496万 | -10.53% |
| 02/24 | 807 | 809 | 758 | 764 | -8.39% | 3,001,600 | 1806億7629万 | -14.25% |
| 02/20 | (IR情報)15:30 自己株式の取得状況及び取得終了に関するお知らせ |
| 02/20 | 855 | 858 | 827 | 834 | -3.02% | 837,000 | 1969億6819万 | -7.33% |
| 02/19 | 860 | 866 | 850 | 860 | -0.12% | 674,200 | 2031億869万 | -5.18% |
| 02/18 | 836 | 863 | 830 | 861 | +4.87% | 1,173,100 | 2033億4486万 | -5.7% |
| 02/17 | 819 | 827 | 807 | 821 | +0.37% | 1,152,800 | 1938億9795万 | -10.76% |
| 02/16 | 809 | 827 | 804 | 818 | +2.25% | 798,400 | 1931億8943万 | -11.85% |
| 02/13 | 825 | 832 | 798 | 800 | -4.76% | 1,542,900 | 1889億3832万 | -14.53% |
| 02/12 | 863 | 865 | 840 | 840 | -3.89% | 1,236,400 | 1983億8523万 | -11.11% |
| 02/10 | 846 | 881 | 842 | 874 | +4.17% | 1,272,300 | 2064億1511万 | -8.29% |
| 02/09 | 855 | 868 | 834 | 839 | -1.53% | 1,037,800 | 1981億4906万 | -12.51% |
| 02/06 | (自社株買い)取締役会(2026年1月29日)での決議状況(取得期間2026年1月30日~2026年5月31日) |
| 02/06 | 861 | 867 | 848 | 852 | -2.63% | 1,087,500 | 2012億1931万 | -11.98% |
| 02/05 | 832 | 897 | 831 | 875 | +5.68% | 1,674,500 | 2066億5128万 | -10.35% |
| 02/04 | 859 | 866 | 827 | 828 | -9.9% | 2,570,200 | 1955億5116万 | -15.77% |
| 02/03 | 941 | 944 | 918 | 919 | -3.36% | 1,348,600 | 2170億4289万 | -7.36% |
| 02/02 | 969 | 976 | 940 | 951 | -0.83% | 1,894,500 | 2246億42万 | -4.61% |
| 01/30 | (IR情報)10:00 自己株式立会外買付取引(ToSTNeT-3)による自己株式の取得結果のお知らせ |
| 01/30 | 950 | 984 | 942 | 959 | +1.37% | 1,973,900 | 2264億8981万 | -4.2% |
| 01/29 | (IR情報)16:30 自己株式立会外買付取引(ToSTNeT-3)による自己株式の買付に関するお知らせ |
| 01/29 | (IR情報)15:30 自己株式取得に係る事項の決定に関するお知らせ |
| 01/29 | (IR情報)15:30 連結業績予想の修正に関するお知らせ |
| 01/29 | (IR情報)15:30 2026年3月期第3四半期決算短信〔IFRS〕(連結) |
| 01/29 | 937 | 959 | 898 | 946 | +1.18% | 1,563,600 | 2234億1956万 | -5.87% |
| 01/28 | (IR情報)15:30 東京金融取引所の次期取引プラットフォーム開発について |
| 01/28 | 942 | 958 | 932 | 935 | -1.79% | 1,097,400 | 2208億2166万 | -7.43% |
| 01/27 | (IR情報)16:00 株式会社シェアードリサーチによるアナリストレポート公開のお知らせ |
| 01/27 | 950 | 961 | 941 | 952 | -0.73% | 857,000 | 2248億3660万 | -6.21% |
| 01/26 | 964 | 983 | 959 | 959 | +1.05% | 848,600 | 2264億8981万 | -5.98% |
| 01/23 | 950 | 956 | 942 | 949 | +0.21% | 795,700 | 2241億2808万 | -7.23% |
| 01/22 | 951 | 955 | 940 | 947 | +0.32% | 931,400 | 2236億5573万 | -7.97% |
| 01/21 | 956 | 959 | 938 | 944 | -2.48% | 654,200 | 2227億9230万 | -8.62% |
| 01/20 | 982 | 990 | 968 | 968 | -1.22% | 339,900 | 2284億5651万 | -6.74% |
| 01/19 | 995 | 1,001 | 980 | 980 | -0.81% | 477,500 | 2312億8862万 | -5.86% |
| 01/16 | 1,005 | 1,013 | 980 | 988 | -2.47% | 752,500 | 2331億7669万 | -5.45% |
| 01/15 | 1,014 | 1,021 | 1,006 | 1,013 | -0.49% | 348,500 | 2390億7691万 | -3.43% |
| 01/14 | 1,031 | 1,034 | 1,007 | 1,018 | -1.26% | 481,100 | 2402億5695万 | -3.14% |
| 01/13 | 1,029 | 1,034 | 1,015 | 1,031 | +1.68% | 465,800 | 2433億2507万 | -2.18% |
| 01/09 | 1,015 | 1,026 | 997 | 1,014 | -0.2% | 447,600 | 2393億1292万 | -4.07% |
| 01/08 | 1,029 | 1,031 | 1,013 | 1,016 | 0% | 494,000 | 2397億8494万 | -4.15% |
| 01/07 | 1,036 | 1,048 | 1,008 | 1,016 | -3.33% | 1,021,900 | 2397億8494万 | -4.42% |
| 01/06 | 1,038 | 1,058 | 1,033 | 1,051 | +2.44% | 323,400 | 2480億4524万 | -1.41% |
| 01/05 | 1,044 | 1,058 | 1,019 | 1,026 | -2.38% | 421,200 | 2421億4502万 | -3.93% |
| 2025 |
| 12/30 | 1,060 | 1,065 | 1,050 | 1,051 | -0.66% | 228,800 | 2480億4524万 | -1.96% |
| 12/29 | 1,048 | 1,059 | 1,042 | 1,058 | +0.47% | 345,600 | 2496億9731万 | -1.4% |
| 12/26 | 1,056 | 1,062 | 1,048 | 1,053 | +0.19% | 305,800 | 2485億1726万 | -2.05% |
| 12/25 | 1,066 | 1,066 | 1,044 | 1,051 | -0.94% | 322,800 | 2480億4524万 | -2.32% |
| 12/24 | 1,049 | 1,066 | 1,044 | 1,061 | +1.05% | 447,300 | 2504億533万 | -1.49% |
| 12/23 | 1,042 | 1,051 | 1,038 | 1,050 | +0.57% | 568,000 | 2478億924万 | -2.51% |
| 12/22 | 1,080 | 1,080 | 1,030 | 1,044 | -3.6% | 590,500 | 2462億3418万 | -3.42% |
| 12/19 | 1,080 | 1,086 | 1,070 | 1,083 | +1.79% | 906,600 | 2554億3258万 | 0% |
| 12/18 | 1,060 | 1,069 | 1,055 | 1,064 | +0.85% | 281,500 | 2509億5131万 | -1.94% |
| 12/17 | 1,062 | 1,064 | 1,045 | 1,055 | +0.29% | 294,500 | 2488億2860万 | -2.94% |
| 12/16 | 1,073 | 1,080 | 1,043 | 1,052 | -2.59% | 477,400 | 2481億2103万 | -3.4% |
| 12/15 | 1,063 | 1,080 | 1,060 | 1,080 | +1.31% | 404,100 | 2547億2502万 | -0.92% |
| 12/12 | 1,057 | 1,066 | 1,048 | 1,066 | +1.62% | 436,300 | 2514億2302万 | -2.02% |
| 12/11 | 1,072 | 1,075 | 1,038 | 1,049 | -1.04% | 436,700 | 2474億1346万 | -3.41% |
| 12/10 | 1,083 | 1,085 | 1,060 | 1,060 | -1.4% | 387,400 | 2500億789万 | -2.21% |
| 12/09 | 1,086 | 1,088 | 1,067 | 1,075 | -0.83% | 275,700 | 2535億4573万 | -0.74% |
| 12/08 | 1,076 | 1,089 | 1,070 | 1,084 | +0.74% | 474,400 | 2556億6844万 | +0.09% |
| 12/05 | 1,067 | 1,079 | 1,060 | 1,076 | -0.74% | 316,100 | 2537億8159万 | -0.37% |
| 12/04 | 1,080 | 1,095 | 1,079 | 1,084 | -0.91% | 411,400 | 2556億6844万 | +0.74% |
| 12/03 | 1,112 | 1,117 | 1,094 | 1,094 | -0.18% | 505,100 | 2580億2701万 | +2.15% |
| 12/02 | 1,099 | 1,112 | 1,082 | 1,096 | +0.09% | 415,800 | 2584億9872万 | +2.72% |
| 12/01 | 1,114 | 1,128 | 1,092 | 1,095 | -0.45% | 459,800 | 2582億6286万 | +3.11% |
| 12/01 | 株式分割 1→4 |
| 11/28 | 1,096 | 1,114 | 1,083 | 1,100 | -0.36% | 553,700 | 2594億4215万 | +3.97% |
| 11/27 | 1,102 | 1,117 | 1,095 | 1,104 | +0.14% | 592,700 | 2603億8557万 | +4.64% |
| 11/26 | (5%ルール)五十嵐充(8.01%) |
| 11/26 | 1,108 | 1,111 | 1,099 | 1,103 | +0.8% | 556,000 | 2600億3179万 | +5% |
| 11/25 | 1,116 | 1,120 | 1,094 | 1,094 | -1.24% | 355,200 | 2579億6804万 | +4.57% |
| 11/21 | 1,084 | 1,109 | 1,073 | 1,108 | +2.19% | 596,400 | 2612億1107万 | +6.29% |
| 11/20 | 1,078 | 1,086 | 1,070 | 1,084 | +2.12% | 640,000 | 2555億7913万 | +4.51% |
| 11/19 | 1,074 | 1,076 | 1,055 | 1,061 | -1.28% | 641,600 | 2502億7299万 | +2.64% |
| 11/18 | 1,123 | 1,130 | 1,075 | 1,075 | -5.18% | 750,800 | 2535億1563万 | +4.17% |
| 11/17 | 1,105 | 1,136 | 1,100 | 1,134 | +2.95% | 801,600 | 2673億7056万 | +9.97% |
| 11/14 | 1,108 | 1,111 | 1,100 | 1,101 | -2.11% | 739,200 | 2597億613万 | +7.13% |
| 11/13 | 1,140 | 1,146 | 1,120 | 1,125 | 0% | 735,200 | 2653億706万 | +9.54% |
| 11/12 | 1,138 | 1,144 | 1,124 | 1,125 | +1.93% | 978,000 | 2653億706万 | +9.76% |
| 11/11 | 1,103 | 1,121 | 1,095 | 1,104 | +1.73% | 1,151,600 | 2602億9570万 | +8% |
| 11/10 | 1,079 | 1,088 | 1,065 | 1,085 | +5.72% | 939,200 | 2558億7392万 | +6.48% |
| 11/07 | 1,010 | 1,040 | 1,005 | 1,026 | +2.11% | 886,800 | 2420億1899万 | +1.01% |
| 11/06 | (IR情報)15:30 シンプレクス、DMM.com証券の新サービス「ウルトラ投資アプリ TOSSY」のサービス開発を支援 |
| 11/06 | 1,031 | 1,039 | 994 | 1,005 | -0.99% | 673,200 | 2370億764万 | -1.18% |
| 11/05 | 1,011 | 1,021 | 986 | 1,015 | +0.12% | 820,000 | 2393億6592万 | -0.49% |
| 11/04 | (IR情報)16:30 シンプレクスグループ「統合報告書2025」公開のお知らせ |
| 11/04 | 1,059 | 1,064 | 1,014 | 1,014 | -5.7% | 1,245,200 | 2390億7114万 | -0.9% |
| 10/31 | 1,013 | 1,104 | 1,000 | 1,075 | +5.65% | 3,367,600 | 2535億1563万 | +4.78% |
| 10/30 | (IR情報)15:30 株式分割及び定款の一部変更に関するお知らせ |
| 10/30 | (IR情報)15:30 業績予想の修正及び配当予想の修正(増配)に関するお知らせ |
| 10/30 | (IR情報)15:30 2026年3月期第2四半期(中間期)決算短信〔IFRS〕(連結) |
| 10/30 | 970 | 1,025 | 970 | 1,018 | +5.3% | 1,802,400 | 2399億5549万 | -0.83% |
| 10/29 | 981 | 981 | 963 | 966 | +0.26% | 858,800 | 2278億6928万 | -6.1% |
| 10/28 | 983 | 986 | 960 | 964 | -3.02% | 943,200 | 2272億7971万 | -6.79% |
| 10/27 | 993 | 1,006 | 989 | 994 | +1.27% | 564,800 | 2343億5457万 | -4.45% |
| 10/24 | (IR情報)15:30 シンプレクス、ユー・エス・エスの主要事業であるオートオークション事業に関わる基幹業務システム刷新の支援を決定 |
| 10/24 | 990 | 994 | 973 | 981 | -1.63% | 657,200 | 2314億671万 | -6.01% |
| 10/23 | 1,006 | 1,013 | 993 | 998 | -0.87% | 427,200 | 2352億3892万 | -4.91% |
| 10/22 | 1,003 | 1,013 | 998 | 1,006 | +0.75% | 767,600 | 2373億242万 | -4.53% |
| 10/21 | 991 | 1,005 | 985 | 999 | +0.25% | 515,600 | 2352億6834万 | -5.69% |
| 10/20 | 1,000 | 1,009 | 995 | 996 | +1.4% | 746,800 | 2346億7943万 | -6.37% |
| 10/17 | 991 | 995 | 974 | 983 | -1.63% | 525,600 | 2314億4045万 | -8.09% |
| 10/16 | 1,001 | 1,019 | 990 | 999 | -0.87% | 551,200 | 2352億6834万 | -7.09% |
| 10/15 | 1,005 | 1,016 | 1,005 | 1,008 | -0.74% | 550,000 | 2373億2952万 | -6.54% |
| 10/14 | 1,024 | 1,034 | 1,011 | 1,015 | -2.75% | 364,800 | 2390億9624万 | -6.11% |
| 10/10 | 1,038 | 1,051 | 1,036 | 1,044 | -0.36% | 414,000 | 2458億6867万 | -3.62% |
| 10/09 | 1,070 | 1,074 | 1,029 | 1,048 | -3.34% | 849,600 | 2467億5203万 | -3.37% |
| 10/08 | 1,068 | 1,094 | 1,064 | 1,084 | +1.76% | 814,400 | 2552億9118万 | -0.21% |
| 10/07 | 1,050 | 1,071 | 1,048 | 1,065 | +0.47% | 456,400 | 2508億7438万 | -2.11% |