| 2023 |
| 09/28 | （IR情報）16:00 自己株式の消却に関するお知らせ |
| 09/27 | 1,851 | 1,900 | 1,851 | 1,900 | +0.96% | 80,300 | 159億1089万 | +9.95% |
| 09/26 | 1,902 | 1,904 | 1,864 | 1,882 | -0.95% | 41,800 | 157億6016万 | +9.67% |
| 09/25 | 1,870 | 1,923 | 1,870 | 1,900 | +2.87% | 68,800 | 159億1089万 | +11.5% |
| 09/22 | 1,840 | 1,860 | 1,828 | 1,847 | +0.87% | 79,000 | 154億6706万 | +9.23% |
| 09/21 | 1,835 | 1,849 | 1,820 | 1,831 | +1.61% | 65,500 | 153億3308万 | +8.86% |
| 09/20 | 1,802 | 1,845 | 1,780 | 1,802 | +0.06% | 65,200 | 150億9023万 | +7.71% |
| 09/19 | 1,780 | 1,802 | 1,767 | 1,801 | +1.46% | 70,500 | 150億8185万 | +8.1% |
| 09/15 | 1,751 | 1,785 | 1,751 | 1,775 | +1.49% | 63,900 | 148億6412万 | +6.93% |
| 09/14 | 1,730 | 1,749 | 1,720 | 1,749 | +1.75% | 42,600 | 146億4640万 | +5.62% |
| 09/13 | 1,705 | 1,731 | 1,705 | 1,719 | +0.41% | 47,900 | 143億9517万 | +4.12% |
| 09/12 | 1,685 | 1,717 | 1,685 | 1,712 | +1.54% | 38,900 | 143億3655万 | +3.88% |
| 09/11 | 1,688 | 1,714 | 1,683 | 1,686 | -0.06% | 17,400 | 141億1882万 | +2.49% |
| 09/08 | 1,685 | 1,711 | 1,685 | 1,687 | -1.4% | 31,000 | 141億2720万 | +2.74% |
| 09/07 | 1,700 | 1,720 | 1,694 | 1,711 | +0.06% | 40,900 | 143億2818万 | +4.33% |
| 09/06 | 1,696 | 1,719 | 1,696 | 1,710 | +0.47% | 41,000 | 143億1980万 | +4.33% |
| 09/05 | 1,690 | 1,702 | 1,686 | 1,702 | +0.59% | 20,000 | 142億5281万 | +3.84% |
| 09/04 | 1,707 | 1,707 | 1,691 | 1,692 | -0.65% | 49,000 | 141億6907万 | +3.23% |
| 09/01 | （IR情報）16:00 リケンNPR株式会社の上場承認に関するお知らせ |
| 09/01 | 1,679 | 1,707 | 1,679 | 1,703 | +1.61% | 36,500 | 142億6118万 | +3.9% |
| 08/31 | 1,643 | 1,688 | 1,643 | 1,676 | +1.82% | 26,700 | 140億3508万 | +2.32% |
| 08/30 | 1,641 | 1,653 | 1,631 | 1,646 | +0.67% | 35,300 | 137億8386万 | +0.49% |
| 08/29 | （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及び自己株式の取得終了に関するお知らせ |
| 08/29 | 1,642 | 1,644 | 1,626 | 1,635 | +1.49% | 24,200 | 136億9174万 | -0.3% |
| 08/28 | （IR情報）16:30 信託型従業員持株インセンティブ・プラン(E-Ship)に係る信託期間の終了に関するお知らせ |
| 08/28 | （IR情報）16:30 自己株式の取得及び自己株式立会外買付取引(ToSTNeT-3)による自己株式の買付けに関するお知らせ |
| 08/28 | 1,602 | 1,618 | 1,602 | 1,611 | +0.56% | 17,300 | 134億9076万 | -1.95% |
| 08/25 | 1,601 | 1,605 | 1,598 | 1,602 | -0.93% | 17,800 | 134億1539万 | -2.61% |
| 08/24 | 1,620 | 1,631 | 1,614 | 1,617 | +0.06% | 20,700 | 135億4101万 | -1.88% |
| 08/23 | 1,586 | 1,618 | 1,582 | 1,616 | +1.89% | 13,100 | 135億3263万 | -2.06% |
| 08/22 | 1,581 | 1,597 | 1,577 | 1,586 | +0.76% | 9,800 | 132億8141万 | -3.94% |
| 08/21 | 1,572 | 1,606 | 1,572 | 1,574 | -1.13% | 16,100 | 131億8092万 | -4.72% |
| 08/18 | 1,589 | 1,607 | 1,585 | 1,592 | -0.75% | 19,500 | 133億3165万 | -3.75% |
| 08/17 | 1,605 | 1,611 | 1,570 | 1,604 | -0.62% | 24,700 | 134億3214万 | -3.14% |
| 08/16 | 1,635 | 1,643 | 1,614 | 1,614 | -1.71% | 33,300 | 135億1588万 | -2.71% |
| 08/15 | 1,660 | 1,664 | 1,642 | 1,642 | -0.12% | 15,500 | 137億5036万 | -1.2% |
| 08/14 | 1,698 | 1,698 | 1,634 | 1,644 | -1.14% | 52,100 | 137億6711万 | -1.26% |
| 08/10 | （IR情報）14:30 2024年3月期第2四半期(累計)連結業績予想の修正に関するお知らせ |
| 08/10 | （IR情報）14:30 2024年3月期第1四半期決算短信〔日本基準〕(連結) |
| 08/10 | 1,613 | 1,749 | 1,533 | 1,663 | +2.4% | 154,100 | 139億2622万 | -0.3% |
| 08/09 | 1,625 | 1,644 | 1,610 | 1,624 | -1.22% | 22,800 | 135億9963万 | -2.81% |
| 08/08 | 1,640 | 1,665 | 1,640 | 1,644 | +0.37% | 14,400 | 137億6711万 | -1.73% |
| 08/07 | 1,621 | 1,651 | 1,609 | 1,638 | +0.92% | 14,400 | 137億1686万 | -2.03% |
| 08/04 | 1,611 | 1,643 | 1,611 | 1,623 | -0.79% | 22,200 | 135億9125万 | -2.76% |
| 08/03 | 1,663 | 1,674 | 1,630 | 1,636 | -2.15% | 85,000 | 137億12万 | -1.92% |
| 08/02 | 1,696 | 1,711 | 1,662 | 1,672 | -2.22% | 51,600 | 140億159万 | +0.42% |
| 08/01 | 1,710 | 1,718 | 1,703 | 1,710 | 0% | 18,100 | 143億1980万 | +3.07% |
| 07/31 | 1,710 | 1,715 | 1,698 | 1,710 | +0.59% | 54,400 | 143億1980万 | +3.57% |
| 07/28 | 1,680 | 1,700 | 1,668 | 1,700 | +1.19% | 96,500 | 142億3606万 | +3.47% |
| 07/27 | 1,679 | 1,696 | 1,662 | 1,680 | +0.06% | 27,900 | 140億6858万 | +2.75% |
| 07/26 | 1,696 | 1,696 | 1,676 | 1,679 | -1% | 26,600 | 140億6020万 | +3.07% |
| 07/25 | 1,690 | 1,700 | 1,683 | 1,696 | +0.53% | 32,500 | 142億257万 | +4.63% |
| 07/24 | 1,678 | 1,700 | 1,678 | 1,687 | +0.6% | 26,900 | 141億2720万 | +4.59% |
| 07/21 | 1,666 | 1,682 | 1,658 | 1,677 | +0.6% | 15,700 | 140億4346万 | +4.49% |
| 07/20 | 1,693 | 1,707 | 1,667 | 1,667 | -1.01% | 44,800 | 139億5971万 | +4.45% |
| 07/19 | 1,628 | 1,684 | 1,628 | 1,684 | +3.57% | 42,000 | 141億208万 | +6.11% |
| 07/18 | 1,610 | 1,652 | 1,610 | 1,626 | +0.99% | 35,100 | 136億1637万 | +3.04% |
| 07/14 | 1,642 | 1,643 | 1,603 | 1,610 | -1.77% | 41,900 | 134億8239万 | +2.55% |
| 07/13 | （5%ルール）三菱UFJ国際投信（0.35%）三菱UFJ信託銀行（4.15%）三菱UFJモルガン・スタンレー証券（0.02%） |
| 07/13 | 1,621 | 1,647 | 1,604 | 1,639 | +0.49% | 39,400 | 137億2524万 | +4.93% |
| 07/12 | 1,688 | 1,700 | 1,631 | 1,631 | -2.63% | 68,600 | 136億5825万 | +5.09% |
| 07/11 | 1,704 | 1,728 | 1,672 | 1,675 | -1.06% | 72,900 | 140億2671万 | +8.63% |
| 07/10 | 1,696 | 1,721 | 1,692 | 1,693 | -1.57% | 72,800 | 141億7744万 | +10.58% |
| 07/07 | 1,720 | 1,737 | 1,685 | 1,720 | -0.29% | 64,400 | 144億355万 | +13.23% |
| 07/06 | 1,737 | 1,780 | 1,711 | 1,725 | -0.12% | 95,700 | 144億4542万 | +14.54% |
| 07/05 | 1,700 | 1,729 | 1,685 | 1,727 | +3.29% | 92,000 | 144億6216万 | +15.83% |
| 07/04 | 1,650 | 1,710 | 1,645 | 1,672 | +3.02% | 132,300 | 140億159万 | +13.28% |
| 07/03 | 1,600 | 1,625 | 1,589 | 1,623 | +3.11% | 91,700 | 135億9125万 | +10.78% |
| 06/30 | 1,580 | 1,599 | 1,570 | 1,574 | -0.38% | 91,800 | 131億8092万 | +8.03% |
| 06/29 | 1,580 | 1,585 | 1,568 | 1,580 | +1.15% | 72,500 | 132億3116万 | +8.89% |
| 06/28 | 1,533 | 1,568 | 1,533 | 1,562 | +1.89% | 81,200 | 130億8043万 | +8.1% |
| 06/27 | （IR情報）15:15 当社の上場維持基準の適合状況の推移について |
| 06/27 | 1,526 | 1,535 | 1,515 | 1,533 | +1.19% | 34,200 | 128億3758万 | +6.46% |
| 06/26 | 1,500 | 1,529 | 1,499 | 1,515 | +1.2% | 42,300 | 126億8684万 | +5.65% |
| 06/23 | 1,507 | 1,523 | 1,490 | 1,497 | -0.86% | 52,500 | 125億3611万 | +4.69% |
| 06/22 | 1,537 | 1,537 | 1,510 | 1,510 | -0.13% | 31,300 | 126億4497万 | +5.96% |
| 06/21 | 1,498 | 1,521 | 1,491 | 1,512 | +0.93% | 30,300 | 126億6172万 | +6.48% |
| 06/20 | 1,501 | 1,512 | 1,491 | 1,498 | +0.13% | 32,000 | 125億4448万 | +5.87% |
| 06/19 | 1,483 | 1,517 | 1,482 | 1,496 | +1.15% | 63,800 | 125億2773万 | +6.1% |
| 06/16 | 1,456 | 1,479 | 1,456 | 1,479 | +1.79% | 57,500 | 123億8537万 | +5.19% |
| 06/15 | 1,458 | 1,461 | 1,446 | 1,453 | 0% | 30,600 | 121億6765万 | +3.64% |
| 06/14 | 1,450 | 1,473 | 1,447 | 1,453 | +0.76% | 46,500 | 121億6765万 | +3.86% |
| 06/13 | 1,434 | 1,450 | 1,434 | 1,442 | +0.56% | 34,700 | 120億7553万 | +3.37% |
| 06/12 | 1,426 | 1,450 | 1,423 | 1,434 | +1.7% | 33,000 | 120億854万 | +2.94% |
| 06/09 | 1,404 | 1,415 | 1,399 | 1,410 | +1.73% | 33,100 | 118億756万 | +1.44% |
| 06/08 | 1,391 | 1,404 | 1,386 | 1,386 | -0.36% | 23,400 | 116億658万 | -0.07% |
| 06/07 | 1,401 | 1,418 | 1,391 | 1,391 | -0.07% | 34,000 | 116億4845万 | +0.36% |
| 06/06 | 1,396 | 1,407 | 1,392 | 1,392 | -0.22% | 30,800 | 116億5682万 | +0.58% |
| 06/05 | 1,385 | 1,413 | 1,385 | 1,395 | +1.16% | 53,100 | 116億8194万 | +0.94% |
| 06/02 | 1,366 | 1,386 | 1,366 | 1,379 | +0.8% | 19,100 | 115億4796万 | 0% |
| 06/01 | 1,356 | 1,372 | 1,356 | 1,368 | +0.88% | 13,500 | 114億5584万 | -0.73% |
| 05/31 | 1,388 | 1,398 | 1,356 | 1,356 | -2.73% | 40,200 | 113億5535万 | -1.53% |
| 05/30 | 1,409 | 1,417 | 1,388 | 1,394 | -1.27% | 41,100 | 116億7357万 | +1.23% |
| 05/29 | 1,423 | 1,440 | 1,412 | 1,412 | -1.05% | 51,500 | 118億2430万 | +2.62% |
| 05/26 | 1,430 | 1,445 | 1,426 | 1,427 | -0.07% | 37,000 | 119億4992万 | +3.93% |
| 05/25 | 1,433 | 1,438 | 1,428 | 1,428 | -0.35% | 29,000 | 119億5829万 | +4.23% |
| 05/24 | 1,408 | 1,433 | 1,400 | 1,433 | +3.47% | 136,500 | 120億16万 | +4.9% |
| 05/23 | （IR情報）15:00 日本ピストンリング株式会社と株式会社リケンとの共同持株会社設立(株式移転)による経営統合に関する最終契約締結について |
| 05/23 | 1,415 | 1,420 | 1,379 | 1,385 | -1.77% | 50,800 | 115億9820万 | +1.61% |
| 05/22 | 1,393 | 1,417 | 1,393 | 1,410 | +1.73% | 53,500 | 118億756万 | +3.6% |
| 05/19 | 1,383 | 1,405 | 1,380 | 1,386 | +0.22% | 43,100 | 116億658万 | +1.99% |
| 05/18 | 1,380 | 1,384 | 1,368 | 1,383 | +0.66% | 36,400 | 115億8145万 | +1.92% |
| 05/17 | 1,383 | 1,386 | 1,372 | 1,374 | -0.65% | 27,300 | 115億609万 | +1.4% |
| 05/16 | 1,398 | 1,401 | 1,383 | 1,383 | -1.07% | 45,800 | 115億8145万 | +2.29% |
| 05/15 | 1,396 | 1,411 | 1,384 | 1,398 | +0.65% | 51,400 | 117億707万 | +3.63% |
| 05/12 | （IR情報）14:30 2023年3月期決算短信〔日本基準〕(連結) |
| 05/12 | 1,360 | 1,410 | 1,359 | 1,389 | +2.06% | 70,800 | 116億3170万 | +3.19% |
| 05/11 | 1,371 | 1,371 | 1,361 | 1,361 | -0.73% | 22,500 | 113億9722万 | +1.19% |
| 05/10 | 1,377 | 1,382 | 1,371 | 1,371 | -0.36% | 22,700 | 114億8096万 | +2.01% |
| 05/09 | 1,358 | 1,377 | 1,358 | 1,376 | +1.33% | 19,800 | 115億2284万 | +2.46% |
| 05/08 | 1,348 | 1,360 | 1,348 | 1,358 | +0.97% | 12,200 | 113億7210万 | +1.27% |
