| 2023 |
| 09/27 | （IR情報）15:00 自己株式の消却に関するお知らせ |
| 09/27 | 3,640 | 3,720 | 3,640 | 3,720 | +0.54% | 72,500 | 397億6258万 | +9.77% |
| 09/26 | 3,725 | 3,735 | 3,655 | 3,700 | -0.67% | 39,500 | 395億4880万 | +10.02% |
| 09/25 | 3,700 | 3,770 | 3,690 | 3,725 | +2.05% | 67,100 | 398億1602万 | +11.59% |
| 09/22 | 3,605 | 3,660 | 3,575 | 3,650 | +1.25% | 53,000 | 390億1436万 | +10.14% |
| 09/21 | 3,570 | 3,625 | 3,565 | 3,605 | +1.98% | 29,000 | 385億3336万 | +9.47% |
| 09/20 | 3,540 | 3,580 | 3,505 | 3,535 | -0.42% | 54,900 | 377億8514万 | +7.97% |
| 09/19 | 3,465 | 3,550 | 3,465 | 3,550 | +3.35% | 43,200 | 379億4547万 | +8.9% |
| 09/15 | 3,435 | 3,485 | 3,435 | 3,435 | +0.44% | 48,500 | 367億1625万 | +5.86% |
| 09/14 | 3,385 | 3,435 | 3,375 | 3,420 | +1.33% | 30,500 | 365億5592万 | +5.62% |
| 09/13 | 3,375 | 3,385 | 3,335 | 3,375 | 0% | 28,700 | 360億7492万 | +4.55% |
| 09/12 | 3,325 | 3,375 | 3,325 | 3,375 | +1.66% | 25,600 | 360億7492万 | +4.78% |
| 09/11 | 3,310 | 3,345 | 3,310 | 3,320 | +0.61% | 15,900 | 354億8703万 | +3.27% |
| 09/08 | 3,375 | 3,375 | 3,300 | 3,300 | -2.22% | 35,800 | 352億7325万 | +2.84% |
| 09/07 | 3,340 | 3,380 | 3,340 | 3,375 | +0.6% | 35,600 | 360億7492万 | +5.3% |
| 09/06 | 3,350 | 3,380 | 3,340 | 3,355 | +0.45% | 42,100 | 358億6114万 | +4.81% |
| 09/05 | 3,330 | 3,345 | 3,305 | 3,340 | -0.3% | 34,100 | 357億81万 | +4.34% |
| 09/04 | 3,320 | 3,350 | 3,320 | 3,350 | +0.9% | 24,000 | 358億770万 | +4.65% |
| 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 | 3,300 | 3,335 | 3,295 | 3,320 | +0.91% | 21,400 | 354億8703万 | +3.78% |
| 08/31 | 3,240 | 3,300 | 3,225 | 3,290 | +1.86% | 38,300 | 351億6636万 | +2.91% |
| 08/30 | 3,210 | 3,230 | 3,190 | 3,230 | +0.94% | 19,400 | 345億2503万 | +1.03% |
| 08/29 | 3,170 | 3,210 | 3,165 | 3,200 | +2.07% | 25,900 | 342億437万 | 0% |
| 08/28 | 3,130 | 3,165 | 3,130 | 3,135 | +0.32% | 17,600 | 335億959万 | -2.15% |
| 08/25 | 3,120 | 3,130 | 3,110 | 3,125 | -0.64% | 17,100 | 334億270万 | -2.68% |
| 08/24 | 3,150 | 3,180 | 3,145 | 3,145 | 0% | 15,900 | 336億1648万 | -2.24% |
| 08/23 | 3,090 | 3,145 | 3,080 | 3,145 | +2.28% | 17,200 | 336億1648万 | -2.42% |
| 08/22 | 3,085 | 3,105 | 3,070 | 3,075 | -0.32% | 17,400 | 328億6826万 | -4.65% |
| 08/21 | 3,095 | 3,135 | 3,085 | 3,085 | -0.8% | 15,800 | 329億7515万 | -4.46% |
| 08/18 | 3,100 | 3,130 | 3,090 | 3,110 | -0.64% | 20,200 | 332億4237万 | -3.83% |
| 08/17 | 3,130 | 3,135 | 3,070 | 3,130 | -0.32% | 27,600 | 334億5615万 | -3.34% |
| 08/16 | 3,165 | 3,190 | 3,140 | 3,140 | -1.41% | 30,200 | 335億6303万 | -3.21% |
| 08/15 | 3,180 | 3,210 | 3,165 | 3,185 | +0.31% | 20,600 | 340億4403万 | -2% |
| 08/14 | 3,255 | 3,265 | 3,165 | 3,175 | -2.16% | 45,600 | 339億3714万 | -2.49% |
| 08/10 | （IR情報）15:00 2024年3月期第1四半期決算短信〔日本基準〕(連結) |
| 08/10 | 3,150 | 3,245 | 3,135 | 3,245 | +2.37% | 57,800 | 346億8537万 | -0.61% |
| 08/09 | 3,210 | 3,210 | 3,160 | 3,170 | -1.4% | 25,200 | 338億8370万 | -3.06% |
| 08/08 | 3,220 | 3,245 | 3,215 | 3,215 | -0.16% | 20,200 | 343億6470万 | -1.86% |
| 08/07 | 3,170 | 3,230 | 3,165 | 3,220 | +1.58% | 25,400 | 344億1814万 | -1.71% |
| 08/04 | 3,190 | 3,220 | 3,170 | 3,170 | -0.78% | 22,200 | 338億8370万 | -3.12% |
| 08/03 | 3,245 | 3,250 | 3,190 | 3,195 | -2.74% | 40,000 | 341億5092万 | -2.29% |
| 08/02 | 3,315 | 3,345 | 3,275 | 3,285 | -1.94% | 34,100 | 351億1292万 | +0.55% |
| 08/01 | 3,360 | 3,360 | 3,330 | 3,350 | +0.45% | 13,400 | 358億770万 | +2.89% |
| 07/31 | 3,360 | 3,360 | 3,325 | 3,335 | +1.37% | 32,100 | 356億4736万 | +2.87% |
| 07/28 | 3,255 | 3,310 | 3,215 | 3,290 | +0.15% | 43,300 | 351億6636万 | +1.92% |
| 07/27 | 3,280 | 3,310 | 3,265 | 3,285 | +0.15% | 24,800 | 351億1292万 | +2.18% |
| 07/26 | 3,310 | 3,310 | 3,275 | 3,280 | -0.91% | 25,200 | 350億5948万 | +2.37% |
| 07/25 | 3,315 | 3,320 | 3,295 | 3,310 | 0% | 22,000 | 353億8014万 | +3.73% |
| 07/24 | 3,300 | 3,335 | 3,295 | 3,310 | +0.3% | 23,200 | 353億8014万 | +4.19% |
| 07/21 | 3,295 | 3,300 | 3,255 | 3,300 | +0.61% | 23,000 | 352億7325万 | +4.4% |
| 07/20 | 3,310 | 3,330 | 3,280 | 3,280 | -0.46% | 51,600 | 350億5948万 | +4.36% |
| 07/19 | 3,220 | 3,295 | 3,220 | 3,295 | +2.97% | 43,100 | 352億1981万 | +5.37% |
| 07/18 | 3,120 | 3,225 | 3,120 | 3,200 | +1.11% | 32,400 | 342億437万 | +2.93% |
| 07/14 | 3,225 | 3,225 | 3,145 | 3,165 | -1.71% | 37,200 | 338億3026万 | +2.29% |
| 07/13 | 3,195 | 3,230 | 3,145 | 3,220 | +0.47% | 38,800 | 344億1814万 | +4.58% |
| 07/12 | 3,280 | 3,280 | 3,205 | 3,205 | -2.29% | 46,400 | 342億5781万 | +4.74% |
| 07/11 | 3,300 | 3,355 | 3,265 | 3,280 | 0% | 40,100 | 350億5948万 | +7.82% |
| 07/10 | 3,330 | 3,345 | 3,280 | 3,280 | -2.09% | 52,600 | 350億5948万 | +8.57% |
| 07/07 | 3,350 | 3,375 | 3,295 | 3,350 | -0.89% | 47,100 | 358億770万 | +11.63% |
| 07/06 | 3,380 | 3,475 | 3,365 | 3,380 | -0.29% | 77,300 | 361億2836万 | +13.58% |
| 07/05 | 3,335 | 3,400 | 3,305 | 3,390 | +2.26% | 64,900 | 362億3525万 | +14.95% |
| 07/04 | 3,235 | 3,340 | 3,235 | 3,315 | +3.43% | 72,600 | 354億3359万 | +13.53% |
| 07/03 | 3,160 | 3,210 | 3,140 | 3,205 | +2.56% | 57,400 | 342億5781万 | +10.56% |
| 06/30 | 3,150 | 3,160 | 3,110 | 3,125 | -0.16% | 41,300 | 334億270万 | +8.39% |
| 06/29 | 3,100 | 3,145 | 3,100 | 3,130 | +0.97% | 39,000 | 334億5615万 | +9.06% |
| 06/28 | 3,050 | 3,100 | 3,025 | 3,100 | +2.31% | 59,000 | 331億3548万 | +8.47% |
| 06/27 | 3,015 | 3,030 | 2,984 | 3,030 | +1% | 32,500 | 323億8726万 | +6.43% |
| 06/26 | 3,015 | 3,025 | 2,960 | 3,000 | +1.21% | 37,300 | 320億6659万 | +5.63% |
| 06/23 | 2,980 | 3,005 | 2,944 | 2,964 | -0.77% | 42,800 | 316億8179万 | +4.55% |
| 06/22 | 2,991 | 3,010 | 2,964 | 2,987 | -0.13% | 36,100 | 319億2764万 | +5.51% |
| 06/21 | 2,931 | 3,005 | 2,931 | 2,991 | +1.15% | 45,000 | 319億7039万 | +5.99% |
| 06/20 | 2,963 | 2,966 | 2,927 | 2,957 | -0.27% | 42,800 | 316億697万 | +5.19% |
| 06/19 | 2,940 | 2,984 | 2,929 | 2,965 | +2.24% | 67,000 | 316億9248万 | +5.86% |
| 06/16 | 2,888 | 2,900 | 2,802 | 2,900 | +1.43% | 67,500 | 309億9771万 | +3.83% |
| 06/15 | 2,879 | 2,880 | 2,856 | 2,859 | -0.69% | 31,500 | 305億5946万 | +2.62% |
| 06/14 | 2,865 | 2,887 | 2,862 | 2,879 | +0.88% | 26,900 | 307億7324万 | +3.6% |
| 06/13 | 2,845 | 2,856 | 2,820 | 2,854 | +1.21% | 29,800 | 305億602万 | +2.92% |
| 06/12 | 2,810 | 2,830 | 2,810 | 2,820 | +0.79% | 18,000 | 301億4260万 | +1.92% |
| 06/09 | 2,775 | 2,798 | 2,770 | 2,798 | +1.97% | 29,500 | 299億744万 | +1.23% |
| 06/08 | 2,760 | 2,777 | 2,734 | 2,744 | -0.11% | 24,900 | 293億3024万 | -0.58% |
| 06/07 | 2,800 | 2,800 | 2,747 | 2,747 | -0.58% | 35,000 | 293億6231万 | -0.47% |
| 06/06 | （5%ルール）日興アセットマネジメント（1.44%）三井住友信託銀行（2.45%）三井住友トラスト・アセットマネジメント（1.81%） |
| 06/06 | 2,750 | 2,766 | 2,735 | 2,763 | -0.11% | 21,800 | 295億3333万 | +0.11% |
| 06/05 | 2,777 | 2,793 | 2,751 | 2,766 | +1.17% | 35,700 | 295億6540万 | +0.36% |
| 06/02 | 2,702 | 2,737 | 2,694 | 2,734 | +1.48% | 23,300 | 292億2335万 | -0.65% |
| 06/01 | 2,683 | 2,705 | 2,666 | 2,694 | +0.41% | 31,200 | 287億9580万 | -2.04% |
| 05/31 | 2,753 | 2,756 | 2,683 | 2,683 | -3.38% | 52,200 | 286億7822万 | -2.4% |
| 05/30 | 2,785 | 2,794 | 2,750 | 2,777 | -0.86% | 30,800 | 296億8298万 | +1.06% |
| 05/29 | 2,830 | 2,845 | 2,795 | 2,801 | -0.39% | 34,700 | 299億3951万 | +2.11% |
| 05/26 | 2,828 | 2,856 | 2,808 | 2,812 | -0.78% | 45,600 | 300億5709万 | +2.82% |
| 05/25 | 2,818 | 2,843 | 2,818 | 2,834 | +0.57% | 30,600 | 302億9224万 | +3.89% |
| 05/24 | 2,792 | 2,822 | 2,773 | 2,818 | -0.84% | 73,100 | 301億2122万 | +3.6% |
| 05/23 | （IR情報）15:00 株式会社リケンと日本ピストンリング株式会社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 | 2,895 | 2,895 | 2,834 | 2,842 | -1.86% | 46,900 | 303億7775万 | +4.79% |
| 05/22 | 2,848 | 2,910 | 2,846 | 2,896 | +1.69% | 64,500 | 309億5495万 | +7.18% |
| 05/19 | 2,799 | 2,849 | 2,785 | 2,848 | +2.82% | 83,800 | 304億4189万 | +5.83% |
| 05/18 | 2,724 | 2,770 | 2,724 | 2,770 | +1.91% | 41,800 | 296億815万 | +3.32% |
| 05/17 | 2,702 | 2,747 | 2,700 | 2,718 | +0.3% | 34,800 | 290億5233万 | +1.68% |
| 05/16 | 2,760 | 2,778 | 2,710 | 2,710 | -1.56% | 51,500 | 289億6682万 | +1.65% |
| 05/15 | （IR情報）15:00 2023年3月期決算短信〔日本基準〕(連結) |
| 05/15 | （IR情報）15:00 個別業績の前期実績値との差異に関するお知らせ |
| 05/15 | 2,726 | 2,754 | 2,712 | 2,753 | +0.99% | 40,400 | 294億2644万 | +3.54% |
| 05/12 | 2,696 | 2,736 | 2,692 | 2,726 | +1.11% | 31,600 | 291億3784万 | +2.83% |
| 05/11 | 2,715 | 2,723 | 2,694 | 2,696 | -0.7% | 15,900 | 288億1718万 | +1.81% |
| 05/10 | 2,721 | 2,726 | 2,709 | 2,715 | -0.26% | 18,600 | 290億2027万 | +2.65% |
| 05/09 | 2,726 | 2,744 | 2,717 | 2,722 | -0.44% | 17,700 | 290億9509万 | +3.11% |
| 05/08 | 2,707 | 2,742 | 2,707 | 2,734 | +1% | 18,400 | 292億2335万 | +3.8% |
