| 2026 |
| 03/09 | 2,261 | 2,269 | 2,217 | 2,240 | -1.58% | 1,273,000 | 2279億7532万 | +4.62% |
| 03/06 | (IR情報)15:30 (訂正)ビーシーピーイーメタケイマンエルピーによる公開買付届出書の訂正届出書の提出に伴う公開買付開始公告の訂正に関するお知らせ |
| 03/06 | (5%ルール)バークレイズ・キャピタル・セキュリティーズ・リミ…(5.03%) |
| 03/06 | 2,266 | 2,281 | 2,254 | 2,276 | +0.4% | 441,700 | 2316億3921万 | +7.66% |
| 03/05 | 2,290 | 2,311 | 2,259 | 2,267 | -0.57% | 430,600 | 2307億2324万 | +8.68% |
| 03/04 | 2,290 | 2,302 | 2,254 | 2,280 | -1% | 1,007,000 | 2320億4631万 | +10.63% |
| 03/03 | 2,334 | 2,344 | 2,290 | 2,303 | -0.69% | 573,500 | 2343億8713万 | +13.23% |
| 03/02 | 2,292 | 2,332 | 2,287 | 2,319 | +1.18% | 984,500 | 2360億1552万 | +15.49% |
| 02/27 | (IR情報)17:30 (訂正)ビーシーピーイーメタケイマンエルピーによる公開買付届出書の訂正届出書の提出に伴う公開買付開始公告の訂正に関するお知らせ |
| 02/27 | 2,303 | 2,346 | 2,290 | 2,292 | -2.39% | 1,051,800 | 2332億6761万 | +15.7% |
| 02/26 | 2,349 | 2,362 | 2,342 | 2,348 | -0.04% | 695,900 | 2389億6699万 | +20.16% |
| 02/25 | 2,346 | 2,350 | 2,334 | 2,349 | +0.17% | 808,500 | 2390億6877万 | +22.03% |
| 02/25 | (空売り報告)Barclays Capital Securities Ltd 0株(0%)-1.32%義務消失 |
| 02/24 | 2,351 | 2,357 | 2,336 | 2,345 | -0.51% | 1,054,900 | 2386億6167万 | +23.55% |
| 02/24 | (空売り報告)Barclays Capital Securities Ltd 1,351,208株(1.32%)新規 |
| 02/20 | (IR情報)15:30 (訂正)ビーシーピーイーメタケイマンエルピーによる公開買付届出書の訂正届出書の提出に伴う公開買付開始公告の訂正に関するお知らせ |
| 02/20 | (5%ルール)エフエムアールエルエルシー(FMR LLC)(1.33%) |
| 02/20 | 2,327 | 2,377 | 2,327 | 2,357 | +0.3% | 897,400 | 2398億8296万 | +25.98% |
| 02/19 | 2,300 | 2,366 | 2,299 | 2,350 | +1.95% | 1,561,800 | 2391億7054万 | +27.58% |
| 02/18 | 2,270 | 2,320 | 2,265 | 2,305 | +1.36% | 1,577,700 | 2345億9068万 | +27.07% |
| 02/17 | 2,270 | 2,275 | 2,255 | 2,274 | -0.35% | 1,085,900 | 2314億3566万 | +27.39% |
| 02/16 | 2,270 | 2,283 | 2,262 | 2,282 | +0.71% | 1,653,600 | 2322億4986万 | +29.81% |
| 02/13 | (5%ルール)髙島勇二(31.9%) |
| 02/13 | 2,258 | 2,272 | 2,245 | 2,266 | -0.61% | 1,551,200 | 2306億2147万 | +30.98% |
| 02/12 | 2,280 | 2,288 | 2,273 | 2,280 | 0% | 1,617,400 | 2320億4631万 | +33.88% |
| 02/10 | 2,270 | 2,299 | 2,269 | 2,280 | -0.83% | 3,176,500 | 2320億4631万 | +36.04% |
| 02/09 | 2,210 | 2,335 | 2,209 | 2,299 | +18.63% | 10,489,500 | 2339億8003万 | +39.42% |
| 02/06 | 1,938 | 1,938 | 1,938 | 1,938 | +26.01% | 72,300 | 1972億3936万 | +19.56% |
| 02/06 | (IR情報)8:00 ビーシーピーイーメタケイマンエルピーによる株式会社MCJ(証券コード:6670)の普通株式に対する公開買付けの開始に関するお知らせ |
| 02/05 | (IR情報)22:30 2026年3月期配当予想の修正(無配)及び株主優待制度の廃止に関するお知らせ |
| 02/05 | (IR情報)22:30 MBOの実施に関する賛同の意見表明及び応募の推奨に関するお知らせ |
| 02/05 | (IR情報)15:30 2026年3月期第3四半期決算説明資料 |
| 02/05 | (IR情報)15:30 2026年3月期第3四半期決算短信〔日本基準〕(連結) |
| 02/05 | 1,556 | 1,572 | 1,538 | 1,538 | -3.21% | 473,100 | 1565億2948万 | -4.41% |
| 02/04 | 1,585 | 1,597 | 1,567 | 1,589 | -0.13% | 212,300 | 1617億1999万 | -1.49% |
| 02/03 | 1,585 | 1,613 | 1,581 | 1,591 | +0.89% | 237,700 | 1619億2354万 | -1.3% |
| 02/02 | 1,576 | 1,594 | 1,569 | 1,577 | +0.25% | 327,500 | 1604億9870万 | -2.11% |
| 01/30 | 1,565 | 1,582 | 1,547 | 1,573 | -0.06% | 306,900 | 1600億9160万 | -2.42% |
| 01/29 | 1,585 | 1,585 | 1,563 | 1,574 | -0.76% | 236,600 | 1601億9337万 | -2.36% |
| 01/28 | 1,616 | 1,616 | 1,584 | 1,586 | -2.28% | 201,700 | 1614億1467万 | -1.61% |
| 01/27 | 1,609 | 1,627 | 1,601 | 1,623 | +0.43% | 148,200 | 1651億8033万 | +0.68% |
| 01/26 | 1,638 | 1,640 | 1,616 | 1,616 | -2.3% | 148,100 | 1644億6791万 | +0.31% |
| 01/23 | 1,640 | 1,667 | 1,634 | 1,654 | +0.43% | 156,100 | 1683億3535万 | +2.73% |
| 01/22 | 1,638 | 1,653 | 1,633 | 1,647 | +1.98% | 222,100 | 1676億2293万 | +2.36% |
| 01/21 | 1,583 | 1,622 | 1,580 | 1,615 | -0.12% | 234,200 | 1643億6614万 | +0.56% |
| 01/20 | 1,655 | 1,660 | 1,611 | 1,617 | -3.23% | 296,600 | 1645億6968万 | +0.75% |
| 01/19 | 1,677 | 1,700 | 1,658 | 1,671 | +0.42% | 326,700 | 1700億6552万 | +4.31% |
| 01/16 | 1,644 | 1,666 | 1,622 | 1,664 | +1.03% | 343,300 | 1693億5310万 | +4.13% |
| 01/15 | 1,625 | 1,648 | 1,619 | 1,647 | +0.73% | 241,300 | 1676億2293万 | +3.26% |
| 01/14 | (自社株買い)取締役会(2025年5月14日)での決議状況(取得期間2025年7月1日~2025年12月23日) |
| 01/14 | 1,603 | 1,637 | 1,600 | 1,635 | +2.19% | 297,900 | 1664億163万 | +2.83% |
| 01/13 | 1,600 | 1,611 | 1,573 | 1,600 | +0.82% | 268,300 | 1628億3952万 | +0.88% |
| 01/09 | 1,580 | 1,587 | 1,551 | 1,587 | +0.19% | 224,700 | 1615億1644万 | +0.25% |
| 01/08 | 1,575 | 1,586 | 1,565 | 1,584 | -0.13% | 341,900 | 1612億1112万 | +0.19% |
| 01/07 | 1,587 | 1,603 | 1,575 | 1,586 | -0.88% | 404,000 | 1614億1467万 | +0.44% |
| 01/06 | 1,600 | 1,600 | 1,565 | 1,600 | -0.19% | 502,500 | 1628億3952万 | +1.46% |
| 01/05 | 1,619 | 1,635 | 1,595 | 1,603 | -0.56% | 291,000 | 1631億4484万 | +1.84% |
| 2025 |
| 12/30 | 1,625 | 1,637 | 1,563 | 1,612 | -0.74% | 267,300 | 1640億6081万 | +2.68% |
| 12/29 | 1,660 | 1,673 | 1,615 | 1,624 | -1.22% | 409,500 | 1652億8211万 | +3.64% |
| 12/26 | 1,615 | 1,649 | 1,601 | 1,644 | +5.18% | 673,400 | 1673億1760万 | +5.32% |
| 12/25 | 1,566 | 1,574 | 1,546 | 1,563 | -1.14% | 215,600 | 1590億7385万 | +0.51% |
| 12/24 | (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 |
| 12/24 | 1,596 | 1,596 | 1,572 | 1,581 | -0.75% | 147,900 | 1609億580万 | +1.93% |
| 12/23 | 1,582 | 1,595 | 1,578 | 1,593 | +0.7% | 147,600 | 1621億2709万 | +2.97% |
| 12/22 | 1,583 | 1,593 | 1,560 | 1,582 | +0.89% | 281,300 | 1610億757万 | +2.46% |
| 12/19 | 1,575 | 1,581 | 1,563 | 1,568 | -0.38% | 224,200 | 1595億8272万 | +1.75% |
| 12/18 | (IR情報)17:00 連結子会社からの配当金受領に関するお知らせ |
| 12/18 | 1,596 | 1,605 | 1,574 | 1,574 | -1.38% | 242,100 | 1601億9337万 | +2.27% |
| 12/17 | 1,622 | 1,625 | 1,586 | 1,596 | -0.5% | 397,700 | 1624億3242万 | +3.84% |
| 12/16 | (IR情報)18:00 マウスコンピューター 令和7年青森県東方沖を震源とする地震に伴う災害にかかる被災者生活再建支援について |
| 12/16 | 1,620 | 1,631 | 1,602 | 1,604 | -0.93% | 208,600 | 1632億4661万 | +4.63% |
| 12/15 | 1,608 | 1,636 | 1,601 | 1,619 | +1.7% | 253,900 | 1647億7323万 | +5.96% |
| 12/12 | (自社株買い)取締役会(2025年5月14日)での決議状況(取得期間2025年7月1日~2025年12月23日) |
| 12/12 | 1,587 | 1,595 | 1,571 | 1,592 | +1.53% | 165,400 | 1620億2532万 | +4.74% |
| 12/11 | 1,573 | 1,608 | 1,563 | 1,568 | +0.58% | 343,400 | 1595億8272万 | +3.57% |
| 12/10 | 1,577 | 1,584 | 1,555 | 1,559 | -1.02% | 232,500 | 1586億6675万 | +3.38% |
| 12/09 | 1,575 | 1,583 | 1,559 | 1,575 | 0% | 170,200 | 1602億9515万 | +4.79% |
| 12/08 | 1,562 | 1,577 | 1,553 | 1,575 | +2.81% | 276,900 | 1602億9515万 | +5.14% |
| 12/05 | 1,530 | 1,536 | 1,513 | 1,532 | +0.46% | 234,100 | 1559億1884万 | +2.61% |
| 12/04 | (IR情報)15:30 自己株式の取得状況に関するお知らせ |
| 12/04 | 1,533 | 1,539 | 1,514 | 1,525 | -0.52% | 245,200 | 1552億641万 | +2.35% |
| 12/03 | 1,531 | 1,542 | 1,526 | 1,533 | +0.66% | 205,400 | 1560億2061万 | +3.09% |
| 12/02 | 1,545 | 1,546 | 1,507 | 1,523 | -1.42% | 194,900 | 1550億286万 | +2.56% |
| 12/01 | (IR情報)12:00 連結子会社の一部事業譲渡に関するお知らせ |
| 12/01 | 1,550 | 1,554 | 1,544 | 1,545 | -0.06% | 160,200 | 1572億4191万 | +4.11% |
| 11/28 | 1,540 | 1,555 | 1,532 | 1,546 | +1.84% | 217,800 | 1573億4368万 | +4.46% |
| 11/27 | 1,509 | 1,534 | 1,509 | 1,518 | +0.6% | 196,400 | 1544億9399万 | +2.78% |
| 11/26 | (IR情報)12:00 マウスコンピューター「くるみん認定」(2回目) 取得のお知らせ |
| 11/26 | 1,523 | 1,534 | 1,506 | 1,509 | -0.92% | 184,600 | 1535億7802万 | +2.37% |
| 11/25 | 1,500 | 1,539 | 1,500 | 1,523 | +2.63% | 213,200 | 1550億286万 | +3.46% |
| 11/21 | 1,471 | 1,491 | 1,466 | 1,484 | +0.34% | 192,700 | 1510億3365万 | +1.09% |
| 11/20 | 1,487 | 1,487 | 1,465 | 1,479 | +1.23% | 249,400 | 1505億2478万 | +0.96% |
| 11/19 | 1,477 | 1,491 | 1,456 | 1,461 | -1.55% | 268,300 | 1486億9283万 | -0.14% |
| 11/18 | 1,514 | 1,524 | 1,480 | 1,484 | -1.98% | 157,200 | 1510億3365万 | +1.64% |
| 11/17 | 1,520 | 1,534 | 1,507 | 1,514 | -0.39% | 134,500 | 1540億8689万 | +3.91% |
| 11/14 | 1,522 | 1,534 | 1,513 | 1,520 | -0.39% | 175,900 | 1546億9754万 | +4.61% |
| 11/13 | 1,525 | 1,536 | 1,519 | 1,526 | +0.93% | 221,000 | 1553億819万 | +5.31% |
| 11/12 | 1,500 | 1,522 | 1,500 | 1,512 | +1% | 218,600 | 1538億8334万 | +4.78% |
| 11/11 | (自社株買い)取締役会(2025年5月14日)での決議状況(取得期間2025年7月1日~2025年12月23日) |
| 11/11 | 1,500 | 1,502 | 1,473 | 1,497 | +0.4% | 256,000 | 1523億5672万 | +4.03% |
| 11/10 | 1,425 | 1,499 | 1,423 | 1,491 | +4.93% | 304,700 | 1517億4607万 | +4.05% |
| 11/07 | (IR情報)12:00 マウスコンピューター 子どもたちの教育支援として「信州キッズクリエイトITコンテスト」に協賛 |
| 11/07 | 1,428 | 1,436 | 1,403 | 1,421 | -0.49% | 231,000 | 1446億2184万 | -0.42% |
| 11/06 | 1,410 | 1,442 | 1,400 | 1,428 | +1.42% | 245,100 | 1453億3427万 | +0.21% |
| 11/05 | (IR情報)15:30 2026年3月期第2四半期(中間期)決算説明資料 |
| 11/05 | (IR情報)15:30 2026年3月期第2四半期(中間期)決算短信〔日本基準〕(連結) |
| 11/05 | 1,436 | 1,444 | 1,381 | 1,408 | -2.96% | 362,100 | 1432億9877万 | -1.05% |
| 11/04 | (IR情報)15:30 自己株式の取得状況に関するお知らせ |
| 11/04 | 1,443 | 1,479 | 1,439 | 1,451 | -0.34% | 333,200 | 1476億7508万 | +2.04% |
| 10/31 | 1,450 | 1,474 | 1,448 | 1,456 | +0.97% | 287,300 | 1481億8396万 | +2.54% |
| 10/30 | (IR情報)15:30 2026年3月期第2四半期(中間期)および通期連結業績予想の修正に関するお知らせ |
| 10/30 | 1,443 | 1,455 | 1,436 | 1,442 | -0.07% | 112,800 | 1467億5911万 | +1.76% |
| 10/29 | 1,460 | 1,460 | 1,439 | 1,443 | -0.96% | 187,400 | 1468億6089万 | +1.98% |
| 10/28 | 1,495 | 1,496 | 1,454 | 1,457 | -2.61% | 297,800 | 1482億8573万 | +3.11% |
| 10/27 | 1,485 | 1,506 | 1,480 | 1,496 | +1.22% | 180,300 | 1522億5495万 | +6.02% |
| 10/24 | 1,467 | 1,488 | 1,467 | 1,478 | +0.75% | 137,300 | 1504億2300万 | +5.05% |
| 10/23 | 1,450 | 1,467 | 1,446 | 1,467 | +1.17% | 151,800 | 1493億348万 | +4.41% |
| 10/22 | 1,446 | 1,459 | 1,439 | 1,450 | +0.21% | 151,500 | 1475億7331万 | +3.35% |
| 10/21 | 1,461 | 1,466 | 1,444 | 1,447 | -0.96% | 158,000 | 1472億6799万 | +3.14% |
| 10/20 | 1,450 | 1,463 | 1,441 | 1,461 | +2.53% | 283,800 | 1486億9283万 | +4.21% |
| 10/17 | 1,427 | 1,434 | 1,420 | 1,425 | +0.21% | 145,200 | 1450億2894万 | +1.71% |
| 10/16 | 1,425 | 1,439 | 1,419 | 1,422 | +0.64% | 156,100 | 1447億2362万 | +1.5% |
| 10/15 | 1,397 | 1,418 | 1,396 | 1,413 | +2.24% | 145,800 | 1438億765万 | +0.86% |
| 10/14 | 1,388 | 1,401 | 1,377 | 1,382 | -1.99% | 254,200 | 1406億5263万 | -1.36% |
| 10/10 | (自社株買い)取締役会(2025年5月14日)での決議状況(取得期間2025年7月1日~2025年12月23日) |
| 10/10 | 1,434 | 1,434 | 1,410 | 1,410 | -1.67% | 198,300 | 1435億232万 | +0.5% |
| 10/09 | 1,409 | 1,441 | 1,402 | 1,434 | +2.28% | 256,300 | 1459億4491万 | +2.21% |
| 10/08 | 1,387 | 1,409 | 1,387 | 1,402 | +1.01% | 127,500 | 1426億8812万 | -0.07% |
| 10/01 | (IR情報)15:30 自己株式の取得状況に関するお知らせ |