| 2021 |
| 03/29 | （IR情報）15:00 当社株式の上場廃止のお知らせ |
| 03/29 | 3,970 | 3,980 | 3,915 | 3,920 | -1.01% | 8,700 | 65億6915万 | +3% |
| 03/26 | 3,995 | 4,045 | 3,920 | 3,960 | +1.54% | 5,200 | 66億3618万 | +4.43% |
| 03/25 | 3,860 | 3,930 | 3,860 | 3,900 | +1.04% | 2,900 | 65億3563万 | +3.17% |
| 03/24 | 3,910 | 3,910 | 3,845 | 3,860 | -1.66% | 3,600 | 64億6860万 | +2.36% |
| 03/23 | 4,055 | 4,055 | 3,925 | 3,925 | -1.88% | 4,100 | 65億7753万 | +4.22% |
| 03/22 | 4,105 | 4,105 | 3,990 | 4,000 | -3.85% | 3,900 | 67億322万 | +6.44% |
| 03/19 | 4,195 | 4,210 | 4,160 | 4,160 | -0.95% | 2,900 | 69億7134万 | +10.93% |
| 03/18 | 4,080 | 4,200 | 4,080 | 4,200 | +3.07% | 5,000 | 70億3838万 | +12.57% |
| 03/17 | 3,950 | 4,075 | 3,950 | 4,075 | +1.75% | 5,900 | 68億2890万 | +9.87% |
| 03/16 | 3,995 | 4,005 | 3,995 | 4,005 | +0.63% | 1,900 | 67億1159万 | +8.54% |
| 03/15 | 3,990 | 4,000 | 3,945 | 3,980 | +1.53% | 2,500 | 66億6970万 | +8.27% |
| 03/12 | （IR情報）15:00 自己株式の消却に関するお知らせ |
| 03/12 | 3,870 | 3,930 | 3,850 | 3,920 | +3.16% | 2,500 | 65億6915万 | +7.05% |
| 03/11 | 3,855 | 3,930 | 3,800 | 3,800 | +0.26% | 1,300 | 63億6805万 | +4.17% |
| 03/10 | 3,770 | 3,885 | 3,770 | 3,790 | +1.47% | 4,900 | 63億5130万 | +4.32% |
| 03/09 | 3,730 | 3,765 | 3,720 | 3,735 | +1.63% | 1,900 | 62億5913万 | +3.49% |
| 03/08 | 3,760 | 3,765 | 3,670 | 3,675 | +0.55% | 1,200 | 61億5858万 | +2.48% |
| 03/05 | 3,650 | 3,655 | 3,575 | 3,655 | +0.27% | 2,000 | 61億2506万 | +2.5% |
| 03/04 | 3,675 | 3,715 | 3,645 | 3,645 | -0.68% | 1,100 | 61億830万 | +2.7% |
| 03/03 | 3,680 | 3,680 | 3,640 | 3,670 | +2.95% | 5,100 | 61億5020万 | +3.88% |
| 03/02 | 3,600 | 3,640 | 3,565 | 3,565 | 0% | 900 | 59億7424万 | +1.42% |
| 03/01 | 3,480 | 3,595 | 3,480 | 3,565 | +2.89% | 1,900 | 59億7424万 | +1.77% |
| 02/26 | 3,495 | 3,515 | 3,465 | 3,465 | -3.88% | 1,800 | 58億666万 | -0.72% |
| 02/25 | 3,525 | 3,615 | 3,525 | 3,605 | +4.34% | 1,800 | 60億4127万 | +3.59% |
| 02/24 | 3,530 | 3,530 | 3,455 | 3,455 | -4.29% | 1,100 | 57億8990万 | -0.26% |
| 02/22 | 3,610 | 3,610 | 3,610 | 3,610 | +1.12% | 200 | 60億4965万 | +4.64% |
| 02/19 | 3,650 | 3,650 | 3,560 | 3,570 | -2.46% | 1,300 | 59億8262万 | +3.87% |
| 02/18 | 3,665 | 3,680 | 3,640 | 3,660 | -0.54% | 700 | 61億3344万 | +6.83% |
| 02/17 | 3,705 | 3,705 | 3,680 | 3,680 | -1.6% | 600 | 61億6696万 | +7.82% |
| 02/16 | 3,750 | 3,755 | 3,705 | 3,740 | +0.13% | 2,000 | 62億6751万 | +10.03% |
| 02/15 | 3,745 | 3,745 | 3,735 | 3,735 | -1.32% | 500 | 62億5913万 | +10.54% |
| 02/12 | （IR情報）15:00 業績予想の修正に関するお知らせ |
| 02/12 | （IR情報）15:00 2021年3月期第3四半期決算短信〔日本基準〕(連結) |
| 02/12 | 3,710 | 3,785 | 3,710 | 3,785 | +2.3% | 4,300 | 63億4292万 | +12.65% |
| 02/10 | 3,630 | 3,700 | 3,625 | 3,700 | +1.51% | 1,100 | 62億47万 | +10.68% |
| 02/09 | 3,610 | 3,675 | 3,610 | 3,645 | +1.25% | 2,200 | 61億830万 | +9.53% |
| 02/08 | 3,650 | 3,670 | 3,600 | 3,600 | -1.1% | 1,100 | 60億3289万 | +8.6% |
| 02/05 | 3,590 | 3,705 | 3,590 | 3,640 | +0.14% | 1,400 | 60億9993万 | +10.27% |
| 02/04 | 3,585 | 3,665 | 3,550 | 3,635 | +1.96% | 7,300 | 60億9155万 | +10.65% |
| 02/03 | 3,430 | 3,675 | 3,430 | 3,565 | +3.94% | 3,400 | 59億7424万 | +9.15% |
| 02/02 | 3,215 | 3,430 | 3,200 | 3,430 | +7.36% | 13,800 | 57億4801万 | +5.6% |
| 02/01 | 3,090 | 3,200 | 3,090 | 3,195 | +1.43% | 1,100 | 53億5419万 | -1.21% |
| 01/29 | 3,160 | 3,220 | 3,150 | 3,150 | -1.25% | 6,000 | 52億7878万 | -2.54% |
| 01/28 | 3,150 | 3,220 | 3,150 | 3,190 | -0.93% | 3,500 | 53億4581万 | -1.33% |
| 01/27 | 3,200 | 3,220 | 3,180 | 3,220 | -0.62% | 400 | 53億9609万 | -0.34% |
| 01/26 | 3,200 | 3,240 | 3,200 | 3,240 | 0% | 1,600 | 54億2960万 | +0.4% |
| 01/25 | 3,200 | 3,240 | 3,200 | 3,240 | -0.77% | 1,500 | 54億2960万 | +0.56% |
| 01/22 | 3,215 | 3,265 | 3,215 | 3,265 | +0.77% | 300 | 54億7150万 | +1.49% |
| 01/21 | 3,255 | 3,255 | 3,210 | 3,240 | +1.25% | 1,300 | 54億2960万 | +0.9% |
| 01/20 | 3,200 | 3,200 | 3,200 | 3,200 | 0% | 100 | 53億6257万 | -0.16% |
| 01/19 | 3,200 | 3,210 | 3,200 | 3,200 | +2.4% | 700 | 53億6257万 | -0.12% |
| 01/15 | 3,205 | 3,205 | 3,080 | 3,125 | -4.58% | 2,000 | 52億3689万 | -2.31% |
| 01/13 | 3,280 | 3,280 | 3,250 | 3,275 | -0.61% | 600 | 54億8826万 | +3.12% |
| 01/12 | 3,315 | 3,315 | 3,295 | 3,295 | -1.49% | 800 | 55億2177万 | +4.74% |
| 01/08 | 3,310 | 3,350 | 3,310 | 3,345 | +0.9% | 8,300 | 56億556万 | +7.59% |
| 01/07 | 3,285 | 3,340 | 3,280 | 3,315 | +2.16% | 3,100 | 55億5529万 | +7.98% |
| 01/06 | 3,280 | 3,280 | 3,245 | 3,245 | -0.76% | 1,300 | 54億3798万 | +7.06% |
| 01/05 | 3,280 | 3,340 | 3,270 | 3,270 | -2.39% | 2,100 | 54億7988万 | +9.18% |
| 01/04 | 3,295 | 3,350 | 3,240 | 3,350 | +0.6% | 900 | 56億1394万 | +13.33% |
| 2020 |
| 12/30 | 3,315 | 3,330 | 3,305 | 3,330 | +0.45% | 3,800 | 55億8043万 | +14.28% |
| 12/29 | 3,260 | 3,350 | 3,260 | 3,315 | +1.69% | 3,500 | 55億5529万 | +15.18% |
| 12/28 | 3,240 | 3,290 | 3,220 | 3,260 | +0.62% | 4,400 | 54億6312万 | +14.71% |
| 12/25 | 3,165 | 3,300 | 3,165 | 3,240 | +2.69% | 6,700 | 54億2960万 | +15.59% |
| 12/24 | 3,150 | 3,195 | 3,150 | 3,155 | +1.77% | 6,100 | 52億8716万 | +13.94% |
| 12/23 | 3,170 | 3,170 | 3,080 | 3,100 | 0% | 2,100 | 51億9499万 | +13.26% |
| 12/22 | 3,130 | 3,180 | 3,100 | 3,100 | -1.27% | 2,000 | 51億9499万 | +14.43% |
| 12/21 | 3,130 | 3,180 | 3,130 | 3,140 | -0.95% | 5,200 | 52億6202万 | +17.16% |
| 12/18 | 3,150 | 3,250 | 3,150 | 3,170 | +0.63% | 7,600 | 53億1230万 | +19.58% |
| 12/17 | 3,130 | 3,185 | 3,100 | 3,150 | +0.96% | 5,700 | 52億7878万 | +20.18% |
| 12/16 | 3,130 | 3,185 | 3,120 | 3,120 | +0.32% | 14,000 | 52億2851万 | +20.42% |
| 12/15 | （IR情報）15:00 臨時株主総会の招集及び剰余金の配当(無配)に関するお知らせ |
| 12/15 | 3,130 | 3,130 | 3,080 | 3,110 | -0.32% | 2,300 | 52億1175万 | +21.39% |
| 12/14 | 3,100 | 3,135 | 3,100 | 3,120 | +0.48% | 6,500 | 52億2851万 | +23.08% |
| 12/11 | 3,085 | 3,125 | 3,070 | 3,105 | +0.16% | 5,800 | 52億337万 | +23.95% |
| 12/10 | 3,130 | 3,155 | 3,065 | 3,100 | -2.05% | 8,300 | 51億9499万 | +25.05% |
| 12/09 | 3,095 | 3,180 | 3,050 | 3,165 | +3.26% | 67,600 | 53億392万 | +29.13% |
| 12/08 | 3,065 | 3,065 | 3,065 | 3,065 | +19.49% | 1,700 | 51億3634万 | +26.6% |
| 12/07 | （IR情報）15:30 株式会社デンソーによるジェコー株式会社の完全子会社化に関する株式交換契約締結のお知らせ |
| 12/07 | （IR情報）15:30 臨時株主総会招集のための基準日設定及び定款の一部変更に関するお知らせ |
| 12/07 | 2,545 | 2,700 | 2,545 | 2,565 | +2.11% | 9,100 | 42億9843万 | +7.1% |
| 12/04 | 2,420 | 2,513 | 2,420 | 2,512 | +5.55% | 2,200 | 42億962万 | +5.15% |
| 12/03 | 2,399 | 2,418 | 2,380 | 2,380 | +0.85% | 400 | 39億8841万 | -0.21% |
| 12/02 | 2,360 | 2,360 | 2,360 | 2,360 | 0% | 100 | 39億5489万 | -1.05% |
| 11/30 | 2,419 | 2,419 | 2,360 | 2,360 | +1.64% | 700 | 39億5489万 | -1.13% |
| 11/24 | 2,322 | 2,322 | 2,322 | 2,322 | +0.61% | 200 | 38億9121万 | -2.76% |
| 11/20 | 2,400 | 2,400 | 2,308 | 2,308 | +0.35% | 400 | 38億6775万 | -3.47% |
| 11/19 | 2,375 | 2,375 | 2,291 | 2,300 | -4.96% | 1,200 | 38億5435万 | -3.89% |
| 11/17 | 2,420 | 2,420 | 2,420 | 2,420 | 0% | 200 | 40億5544万 | +1.04% |
| 11/16 | 2,420 | 2,420 | 2,420 | 2,420 | +5.4% | 100 | 40億5544万 | +1.17% |
| 11/13 | 2,325 | 2,331 | 2,278 | 2,296 | -3.33% | 1,600 | 38億4764万 | -3.85% |
| 11/11 | 2,420 | 2,420 | 2,375 | 2,375 | +0.21% | 200 | 39億8003万 | -0.63% |
| 11/10 | 2,352 | 2,382 | 2,351 | 2,370 | -0.63% | 1,500 | 39億7165万 | -0.8% |
| 11/06 | （IR情報）15:00 業績予想の修正に関するお知らせ |
| 11/06 | （IR情報）15:00 剰余金の配当(中間配当)に関するお知らせ |
| 11/06 | （IR情報）15:00 2021年3月期第2四半期決算短信〔日本基準〕(連結) |
| 11/06 | 2,385 | 2,385 | 2,385 | 2,385 | -0.21% | 200 | 39億9679万 | -0.25% |
| 10/30 | 2,411 | 2,411 | 2,385 | 2,390 | -0.83% | 800 | 40億517万 | +0.04% |
| 10/21 | 2,372 | 2,410 | 2,372 | 2,410 | +0.21% | 200 | 40億3869万 | +1.01% |
| 10/20 | 2,405 | 2,405 | 2,405 | 2,405 | 0% | 100 | 40億3031万 | +0.97% |
| 10/16 | 2,410 | 2,410 | 2,405 | 2,405 | -0.25% | 1,000 | 40億3031万 | +1.22% |
| 10/15 | 2,416 | 2,416 | 2,411 | 2,411 | -0.21% | 1,300 | 40億4036万 | +1.77% |
| 10/13 | 2,437 | 2,449 | 2,376 | 2,416 | +1.21% | 800 | 40億4874万 | +2.2% |
| 10/09 | 2,387 | 2,387 | 2,387 | 2,387 | -2.05% | 100 | 40億14万 | +1.14% |
| 10/05 | 2,437 | 2,437 | 2,437 | 2,437 | +0.99% | 100 | 40億8393万 | +3.39% |
| 09/30 | 2,413 | 2,419 | 2,413 | 2,413 | 0% | 600 | 40億4371万 | +2.59% |
| 09/29 | 2,354 | 2,413 | 2,354 | 2,413 | -0.54% | 300 | 40億4371万 | +2.77% |
| 09/28 | 2,409 | 2,426 | 2,409 | 2,426 | +0.71% | 600 | 40億6550万 | +3.5% |
| 09/25 | 2,409 | 2,409 | 2,409 | 2,409 | +0.42% | 200 | 40億3701万 | +3.08% |
| 09/23 | 2,399 | 2,399 | 2,388 | 2,399 | 0% | 400 | 40億2025万 | +2.87% |
