| 2026 |
| 08/04 | 2,905 | 2,925 | 2,864 | 2,894 | +0.38% | 133,100 | 1544億8996万 | +2.48% |
| 08/03 | 2,924 | 2,940 | 2,830 | 2,883 | -1.94% | 230,300 | 1539億275万 | +2.45% |
| 07/31 | 2,916 | 2,971 | 2,870 | 2,940 | +1.34% | 201,200 | 1569億4557万 | +4.85% |
| 07/30 | 2,881 | 2,918 | 2,822 | 2,901 | +0.48% | 234,600 | 1548億6364万 | +3.98% |
| 07/29 | 2,940 | 2,944 | 2,864 | 2,887 | -0.62% | 227,900 | 1541億1628万 | +4% |
| 07/28 | 2,954 | 2,954 | 2,870 | 2,905 | -1.12% | 177,500 | 1550億7717万 | +5.18% |
| 07/27 | 2,912 | 2,946 | 2,894 | 2,938 | +2.66% | 138,300 | 1568億3881万 | +6.91% |
| 07/24 | 2,820 | 2,870 | 2,820 | 2,862 | +0.56% | 96,900 | 1527億8171万 | +4.76% |
| 07/23 | 2,823 | 2,855 | 2,814 | 2,846 | -0.35% | 183,700 | 1519億2759万 | +4.75% |
| 07/22 | (IR情報)13:00 イトーキ、アサヒ飲料の「CO2を食べる自販機」で回収したCO2吸収材を活用したスツールを製作 |
| 07/22 | 2,858 | 2,887 | 2,845 | 2,856 | -0.07% | 136,300 | 1524億6141万 | +5.78% |
| 07/21 | 2,670 | 2,878 | 2,663 | 2,858 | +5.07% | 416,100 | 1525億6818万 | +6.48% |
| 07/17 | 2,810 | 2,810 | 2,672 | 2,720 | -2.89% | 215,400 | 1452億135万 | +1.95% |
| 07/16 | 2,848 | 2,851 | 2,798 | 2,801 | -1.72% | 128,600 | 1495億2536万 | +5.46% |
| 07/15 | 2,870 | 2,876 | 2,808 | 2,850 | +0.49% | 203,900 | 1521億4112万 | +7.91% |
| 07/14 | 2,778 | 2,850 | 2,754 | 2,836 | +2.75% | 236,200 | 1513億9376万 | +8.12% |
| 07/13 | 2,820 | 2,832 | 2,749 | 2,760 | -1.78% | 149,000 | 1473億3666万 | +5.91% |
| 07/10 | 2,860 | 2,875 | 2,797 | 2,810 | -1.37% | 154,200 | 1500億580万 | +8.41% |
| 07/09 | 2,830 | 2,865 | 2,791 | 2,849 | -0.28% | 149,900 | 1520億8773万 | +10.55% |
| 07/08 | 2,875 | 2,955 | 2,853 | 2,857 | +0.14% | 413,900 | 1525億1480万 | +11.69% |
| 07/07 | 2,840 | 2,892 | 2,833 | 2,853 | +0.67% | 278,300 | 1523億127万 | +12.28% |
| 07/06 | 2,772 | 2,863 | 2,751 | 2,834 | +3.81% | 260,700 | 1512億8699万 | +12.24% |
| 07/03 | (IR情報)13:00 イトーキと松尾研究所、ABWオフィスにおける移動の目的と生産性の関係を職種別に分析 |
| 07/03 | 2,690 | 2,740 | 2,670 | 2,730 | +2.86% | 234,200 | 1457億3518万 | +8.64% |
| 07/02 | 2,642 | 2,656 | 2,627 | 2,654 | +1.18% | 211,600 | 1416億7808万 | +5.91% |
| 07/01 | (IR情報)13:00 イトーキ、AIを経営の中核に据え最高AI責任者「CAIO」を新設 |
| 07/01 | 2,643 | 2,655 | 2,596 | 2,623 | -0.76% | 198,500 | 1400億2321万 | +4.71% |
| 06/30 | (IR情報)10:00 イトーキ、中国市場におけるオフィスデザイン提案の強化に向け上海拠点を10月に移転 |
| 06/30 | 2,675 | 2,687 | 2,635 | 2,643 | -0.86% | 210,400 | 1410億9087万 | +5.38% |
| 06/29 | 2,640 | 2,666 | 2,620 | 2,666 | +1.33% | 416,300 | 1423億1867万 | +6.22% |
| 06/26 | 2,621 | 2,638 | 2,570 | 2,631 | +2.33% | 920,400 | 1404億5027万 | +4.9% |
| 06/25 | 2,588 | 2,605 | 2,556 | 2,571 | +0.47% | 579,100 | 1372億4730万 | +2.51% |
| 06/24 | 2,525 | 2,581 | 2,525 | 2,559 | +0.99% | 302,400 | 1366億671万 | +2.03% |
| 06/23 | 2,584 | 2,585 | 2,534 | 2,534 | -1.44% | 265,200 | 1352億7214万 | +0.92% |
| 06/22 | 2,499 | 2,599 | 2,499 | 2,571 | +2.23% | 262,800 | 1372億4730万 | +2.1% |
| 06/19 | 2,486 | 2,530 | 2,476 | 2,515 | +1.17% | 229,900 | 1342億5786万 | -0.32% |
| 06/18 | 2,438 | 2,494 | 2,421 | 2,486 | +2.26% | 279,900 | 1327億976万 | -1.78% |
| 06/17 | 2,455 | 2,470 | 2,429 | 2,431 | -0.98% | 146,300 | 1297億7370万 | -4.4% |
| 06/16 | 2,446 | 2,477 | 2,417 | 2,455 | +0.24% | 203,100 | 1310億5489万 | -4.03% |
| 06/15 | 2,480 | 2,485 | 2,445 | 2,449 | +0.45% | 196,900 | 1307億3459万 | -4.75% |
| 06/12 | (IR情報)15:30 執行役員人事に関するお知らせ |
| 06/12 | 2,416 | 2,454 | 2,409 | 2,438 | +0.91% | 207,300 | 1301億4738万 | -5.65% |
| 06/11 | (IR情報)10:00 イトーキ、AIエージェントとの連携でオフィス運用を最適化する「ITOKI OFFICE DEVICES 」を開発 |
| 06/11 | (IR情報)10:00 イトーキ、従業員数1.5倍、1人あたり面積35%減でも成果につながる本社オフィスへ刷新 |
| 06/11 | 2,396 | 2,429 | 2,386 | 2,416 | +0.33% | 187,200 | 1289億7296万 | -7.15% |
| 06/10 | 2,403 | 2,430 | 2,392 | 2,408 | +0.21% | 154,800 | 1285億4590万 | -8.61% |
| 06/09 | 2,444 | 2,469 | 2,403 | 2,403 | -0.91% | 170,500 | 1282億7898万 | -9.83% |
| 06/08 | 2,381 | 2,428 | 2,381 | 2,425 | +0.12% | 191,400 | 1294億5341万 | -10.05% |
| 06/05 | 2,411 | 2,460 | 2,389 | 2,422 | +2.24% | 189,300 | 1292億9326万 | -11.31% |
| 06/04 | 2,396 | 2,434 | 2,355 | 2,369 | -3.15% | 339,600 | 1264億6397万 | -14.23% |
| 06/03 | 2,405 | 2,477 | 2,389 | 2,446 | -0.37% | 437,100 | 1305億7445万 | -12.49% |
| 06/02 | (IR情報)11:00 イトーキ、未利用資源を企業価値に転換するサステナブルデザインソリューション「Econifa UPCYCLE」を2026年6月より提供開始 |
| 06/02 | 2,480 | 2,486 | 2,412 | 2,455 | -2.66% | 378,200 | 1310億5489万 | -13.16% |
| 06/01 | 2,550 | 2,573 | 2,491 | 2,522 | -1.75% | 335,900 | 1346億3154万 | -11.79% |
| 05/29 | 2,619 | 2,620 | 2,544 | 2,567 | -1.84% | 447,200 | 1370億3377万 | -11.18% |
| 05/28 | (IR情報)15:30 株主優待制度内容に関するお知らせ |
| 05/28 | 2,699 | 2,700 | 2,551 | 2,615 | -3.61% | 377,800 | 1395億9615万 | -10.41% |
| 05/27 | 2,700 | 2,757 | 2,677 | 2,713 | +1.57% | 384,500 | 1448億2767万 | -7.91% |
| 05/26 | 2,660 | 2,730 | 2,615 | 2,671 | +1.87% | 236,200 | 1425億8559万 | -10.13% |
| 05/25 | 2,624 | 2,639 | 2,581 | 2,622 | -0.11% | 169,400 | 1399億6983万 | -12.57% |
| 05/22 | 2,611 | 2,649 | 2,580 | 2,625 | +2.02% | 262,100 | 1401億2998万 | -13.54% |
| 05/21 | 2,699 | 2,699 | 2,573 | 2,573 | -3.02% | 241,200 | 1373億5407万 | -16.24% |
| 05/20 | 2,718 | 2,719 | 2,619 | 2,653 | -1.89% | 201,800 | 1416億2470万 | -14.67% |
| 05/19 | 2,737 | 2,813 | 2,684 | 2,704 | +0.22% | 202,400 | 1443億4722万 | -13.91% |
| 05/18 | 2,722 | 2,725 | 2,652 | 2,698 | -0.63% | 212,400 | 1440億2692万 | -14.97% |
| 05/15 | 2,789 | 2,801 | 2,690 | 2,715 | -2.65% | 255,100 | 1449億3443万 | -15.16% |
| 05/14 | 2,805 | 2,827 | 2,789 | 2,789 | -0.36% | 222,600 | 1488億8476万 | -13.49% |
| 05/13 | 2,799 | 2,833 | 2,791 | 2,799 | +0.43% | 335,100 | 1494億1859万 | -13.72% |
| 05/12 | (IR情報)15:30 譲渡制限付株式報酬としての自己株式の処分の払込完了に関するお知らせ |
| 05/12 | 2,799 | 2,837 | 2,783 | 2,787 | +0.98% | 441,500 | 1487億7800万 | -14.56% |
| 05/11 | 2,894 | 2,922 | 2,760 | 2,760 | -4.6% | 487,600 | 1473億3666万 | -15.85% |
| 05/08 | 2,920 | 2,964 | 2,775 | 2,893 | -10.98% | 1,111,000 | 1544億3658万 | -12.09% |
| 05/08 | (IR情報)8:30 2026年12月期 第1四半期決算報告 質疑応答要旨掲載のお知らせ |
| 05/07 | (IR情報)15:30 2026年12月期第1四半期決算補足説明資料 |
| 05/07 | (IR情報)15:30 2026年12月期第1四半期決算短信〔日本基準〕(連結) |
| 05/07 | 3,225 | 3,295 | 3,160 | 3,250 | +2.85% | 363,000 | 1734億9426万 | -1.52% |
| 05/01 | 3,145 | 3,160 | 3,120 | 3,160 | -0.16% | 132,100 | 1686億8980万 | -4.24% |
| 04/30 | 3,220 | 3,220 | 3,080 | 3,165 | -3.8% | 277,900 | 1689億5672万 | -4.21% |
| 04/28 | 3,215 | 3,300 | 3,210 | 3,290 | +2.33% | 124,400 | 1756億2957万 | -0.66% |
| 04/27 | 3,175 | 3,270 | 3,170 | 3,215 | +0.78% | 218,600 | 1716億2586万 | -2.96% |
| 04/24 | 3,195 | 3,225 | 3,160 | 3,190 | -1.39% | 135,600 | 1702億9129万 | -3.65% |
| 04/23 | 3,210 | 3,240 | 3,185 | 3,235 | -0.92% | 108,200 | 1726億9351万 | -2.41% |
| 04/22 | 3,295 | 3,325 | 3,250 | 3,265 | -1.06% | 102,300 | 1742億9500万 | -1.77% |
| 04/22 | (空売り報告)モルガン・スタンレーMUFG証券 138,396株(0.25%)-0.39%義務消失 |
| 04/21 | 3,325 | 3,370 | 3,285 | 3,300 | +0.46% | 111,200 | 1761億6340万 | -0.93% |
| 04/21 | (空売り報告)モルガン・スタンレーMUFG証券 346,296株(0.64%)-0.23% |
| 04/20 | 3,315 | 3,355 | 3,275 | 3,285 | -0.3% | 176,300 | 1753億6266万 | -1.5% |
| 04/20 | (空売り報告)Morgan Stanley & Co. International plc 11,171株(0.02%)-0.9%義務消失 |
| 04/20 | (空売り報告)モルガン・スタンレーMUFG証券 467,396株(0.87%)再IN |
| 04/17 | 3,335 | 3,335 | 3,265 | 3,295 | -1.64% | 135,500 | 1758億9649万 | -1.32% |
| 04/17 | (空売り報告)Morgan Stanley & Co. International plc 491,677株(0.92%)+0.65% |
| 04/16 | 3,365 | 3,380 | 3,330 | 3,350 | -0.45% | 144,900 | 1788億3254万 | +0.18% |
| 04/15 | 3,590 | 3,600 | 3,355 | 3,365 | -4.81% | 199,400 | 1796億3329万 | +0.39% |
| 04/14 | 3,600 | 3,620 | 3,530 | 3,535 | 0% | 132,300 | 1887億837万 | +5.3% |
| 04/13 | (IR情報)15:30 譲渡制限付株式報酬としての自己株式処分に関するお知らせ |
| 04/13 | 3,505 | 3,585 | 3,490 | 3,535 | +1.58% | 143,600 | 1887億837万 | +5.62% |
| 04/10 | 3,500 | 3,535 | 3,465 | 3,480 | +0.58% | 113,800 | 1857億7231万 | +4.1% |
| 04/09 | 3,480 | 3,525 | 3,435 | 3,460 | -1.7% | 152,000 | 1847億466万 | +3.56% |
| 04/08 | 3,500 | 3,540 | 3,450 | 3,520 | +4.61% | 148,800 | 1879億763万 | +5.61% |
| 04/07 | (5%ルール)みずほ銀行(2.1%)みずほ信託銀行(0.66%)みずほ証券(0.12%)アセットマネジメントOne(4.19%) |
| 04/07 | 3,315 | 3,365 | 3,295 | 3,365 | +1.51% | 132,400 | 1796億3329万 | +0.93% |
| 04/06 | 3,305 | 3,325 | 3,260 | 3,315 | +0.91% | 106,600 | 1769億6414万 | -0.93% |
| 04/03 | 3,280 | 3,305 | 3,240 | 3,285 | +1.39% | 109,200 | 1753億6266万 | -2.17% |
| 04/02 | 3,285 | 3,375 | 3,230 | 3,240 | -0.15% | 284,900 | 1729億6043万 | -3.74% |
| 04/01 | 3,200 | 3,245 | 3,170 | 3,245 | +7.27% | 197,100 | 1732億2734万 | -3.77% |
| 04/01 | (IR情報)8:45 執行役員人事に関するお知らせ |
| 03/31 | 3,025 | 3,110 | 3,000 | 3,025 | -3.2% | 172,300 | 1614億8312万 | -10.37% |
| 03/30 | (IR情報)17:00 執行役員人事に関するお知らせ |
| 03/30 | 3,110 | 3,135 | 3,060 | 3,125 | -3.85% | 181,300 | 1668億2140万 | -7.6% |
| 03/27 | 3,255 | 3,295 | 3,240 | 3,250 | -0.46% | 140,700 | 1734億9426万 | -4.04% |
| 03/26 | 3,375 | 3,390 | 3,240 | 3,265 | -3.12% | 192,700 | 1742億9500万 | -3.55% |
| 03/25 | 3,370 | 3,415 | 3,355 | 3,370 | +2.12% | 129,700 | 1799億20万 | -0.27% |
| 03/24 | 3,300 | 3,335 | 3,265 | 3,300 | +4.1% | 152,800 | 1761億6340万 | -1.96% |
| 03/23 | 3,205 | 3,235 | 3,150 | 3,170 | -3.79% | 183,400 | 1692億2363万 | -5.06% |
| 03/19 | (5%ルール)三井住友トラスト・アセットマネジメント(3.22%)アモーヴァ・アセットマネジメント(1.9%) |
| 03/19 | 3,380 | 3,380 | 3,280 | 3,295 | -4.63% | 190,300 | 1758億9649万 | -0.93% |
| 03/18 | 3,455 | 3,480 | 3,410 | 3,455 | +0.44% | 118,800 | 1844億3774万 | +4.48% |
| 03/17 | 3,500 | 3,515 | 3,440 | 3,440 | +0.73% | 172,100 | 1836億3700万 | +4.94% |
| 03/16 | 3,405 | 3,480 | 3,395 | 3,415 | +1.04% | 201,500 | 1823億243万 | +5.21% |
| 03/13 | (IR情報)15:30 (訂正)「2025年12月期決算短信〔日本基準〕(連結)」の一部訂正について |
| 03/13 | 3,380 | 3,435 | 3,370 | 3,380 | -1.31% | 131,800 | 1804億3403万 | +5.13% |
| 03/12 | 3,525 | 3,540 | 3,400 | 3,425 | -3.39% | 145,100 | 1828億3626万 | +7.54% |
| 03/11 | 3,550 | 3,610 | 3,525 | 3,545 | +1.87% | 293,500 | 1892億4220万 | +12.43% |
| 03/10 | 3,410 | 3,565 | 3,405 | 3,480 | +5.94% | 346,200 | 1857億7231万 | +11.72% |
| 03/06 | (IR情報)13:00 2025年12月期決算説明会動画および書き起こし(質疑応答含む)掲載のお知らせ |
| 03/06 | (IR情報)10:00 Omega Investment株式会社のレポートに当社掲載のお知らせ |