| 2018 |
| 12/14 | （5%ルール）光商（59.97%） |
| 12/14 | （5%ルール）光商（59.97%）光製作所（0%） |
| 12/14 | 6,640 | 6,650 | 6,640 | 6,650 | +0.15% | 300 | 248億7100万 | +17.24% |
| 12/13 | 6,650 | 6,660 | 6,640 | 6,640 | -0.15% | 2,500 | 248億3360万 | +18.28% |
| 12/12 | 6,650 | 6,680 | 6,650 | 6,650 | 0% | 1,300 | 248億7100万 | +19.65% |
| 12/11 | 6,660 | 6,670 | 6,650 | 6,650 | -0.15% | 2,000 | 248億7100万 | +20.89% |
| 12/10 | 6,660 | 6,660 | 6,650 | 6,660 | 0% | 7,300 | 249億840万 | +22.38% |
| 12/07 | （5%ルール）松栄（5.35%）久伸（11.47%）光商（59.97%）久光（11.53%） |
| 12/07 | 6,660 | 6,670 | 6,660 | 6,660 | 0% | 800 | 249億840万 | +23.81% |
| 12/06 | 6,660 | 6,660 | 6,660 | 6,660 | 0% | 2,600 | 249億840万 | +25.28% |
| 12/05 | 6,680 | 6,680 | 6,660 | 6,660 | -0.15% | 3,300 | 249億840万 | +26.71% |
| 12/04 | 6,670 | 6,730 | 6,660 | 6,670 | +11.17% | 19,000 | 249億4580万 | +28.44% |
| 12/03 | 6,000 | 6,000 | 6,000 | 6,000 | +20% | 400 | 224億4000万 | +17% |
| 11/30 | （IR情報）16:00 株式併合、単元株式数の定めの廃止及び定款の一部変更、並びに臨時株主総会招集のための基準日設定に関するお知らせ |
| 11/30 | 5,000 | 5,000 | 5,000 | 5,000 | +1.21% | 100 | 187億 | -1.77% |
| 11/29 | 4,890 | 4,950 | 4,890 | 4,940 | -0.4% | 500 | 184億7560万 | -2.99% |
| 11/27 | 4,960 | 4,960 | 4,960 | 4,960 | -0.6% | 100 | 185億5040万 | -2.67% |
| 11/21 | 4,900 | 4,990 | 4,900 | 4,990 | -0.2% | 300 | 186億6260万 | -2.16% |
| 11/15 | 5,000 | 5,000 | 5,000 | 5,000 | 0% | 100 | 187億 | -2% |
| 11/13 | （IR情報）15:30 平成31年3月期第2四半期決算短信〔日本基準〕(非連結) |
| 11/12 | 5,000 | 5,000 | 5,000 | 5,000 | -0.2% | 400 | 187億 | -2.04% |
| 11/09 | 5,060 | 5,060 | 5,010 | 5,010 | -0.99% | 1,300 | 187億3740万 | -1.84% |
| 11/08 | 5,070 | 5,100 | 5,060 | 5,060 | +0.2% | 300 | 189億2440万 | -0.88% |
| 11/07 | 5,050 | 5,050 | 5,050 | 5,050 | -0.79% | 100 | 188億8700万 | -1.1% |
| 11/06 | 5,140 | 5,250 | 5,090 | 5,090 | -0.97% | 600 | 190億3660万 | -0.33% |
| 11/02 | 5,140 | 5,140 | 5,140 | 5,140 | 0% | 100 | 192億2360万 | +0.67% |
| 11/01 | 5,090 | 5,140 | 5,090 | 5,140 | -0.96% | 300 | 192億2360万 | +0.71% |
| 10/31 | 5,190 | 5,190 | 5,190 | 5,190 | -0.38% | 200 | 194億1060万 | +1.72% |
| 10/30 | 5,210 | 5,210 | 5,210 | 5,210 | +1.56% | 100 | 194億8540万 | +2.18% |
| 10/22 | 5,080 | 5,130 | 5,080 | 5,130 | -0.97% | 200 | 191億8620万 | +0.75% |
| 10/18 | 5,180 | 5,180 | 5,180 | 5,180 | -1.15% | 100 | 193億7320万 | +1.77% |
| 10/16 | 5,140 | 5,240 | 5,140 | 5,240 | 0% | 700 | 195億9760万 | +3.05% |
| 10/15 | 5,240 | 5,240 | 5,240 | 5,240 | +1.16% | 100 | 195億9760万 | +3.21% |
| 10/12 | 5,180 | 5,180 | 5,180 | 5,180 | +1.97% | 400 | 193億7320万 | +2.13% |
| 10/11 | 5,080 | 5,080 | 5,080 | 5,080 | 0% | 100 | 189億9920万 | +0.22% |
| 10/09 | 5,080 | 5,080 | 5,070 | 5,080 | -1.36% | 300 | 189億9920万 | +0.2% |
| 10/03 | 5,090 | 5,150 | 5,090 | 5,150 | +1.18% | 200 | 192億6100万 | +1.54% |
| 10/02 | 5,080 | 5,090 | 5,030 | 5,090 | +0.99% | 500 | 190億3660万 | +0.32% |
| 10/01 | 5,020 | 5,040 | 5,020 | 5,040 | -0.2% | 200 | 188億4960万 | -0.69% |
| 09/28 | 5,050 | 5,060 | 5,050 | 5,050 | -0.2% | 300 | 188億8700万 | -0.53% |
| 09/27 | 5,060 | 5,060 | 5,060 | 5,060 | +0.4% | 100 | 189億2440万 | -0.39% |
| 09/26 | 5,040 | 5,080 | 5,040 | 5,040 | -0.2% | 400 | 188億4960万 | -0.85% |
| 09/25 | 4,975 | 5,100 | 4,975 | 5,050 | 0% | 400 | 188億8700万 | -0.75% |
| 09/21 | 5,050 | 5,050 | 5,050 | 5,050 | +0.2% | 100 | 188億8700万 | -0.86% |
| 09/20 | 5,090 | 5,090 | 5,040 | 5,040 | +0.8% | 400 | 188億4960万 | -1.22% |
| 09/19 | 5,050 | 5,050 | 5,000 | 5,000 | -0.99% | 700 | 187億 | -2.17% |
| 09/18 | 5,000 | 5,050 | 5,000 | 5,050 | -0.39% | 200 | 188億8700万 | -1.42% |
| 09/13 | 5,010 | 5,070 | 5,010 | 5,070 | -0.39% | 200 | 189億6180万 | -1.27% |
| 09/11 | 5,000 | 5,090 | 5,000 | 5,090 | +0.79% | 200 | 190億3660万 | -1.01% |
| 09/06 | 5,030 | 5,050 | 5,030 | 5,050 | -0.98% | 300 | 188億8700万 | -1.9% |
| 09/05 | 5,100 | 5,100 | 5,100 | 5,100 | 0% | 100 | 190億7400万 | -1.11% |
| 09/04 | 5,100 | 5,100 | 5,100 | 5,100 | 0% | 100 | 190億7400万 | -1.28% |
| 08/27 | 4,950 | 5,100 | 4,950 | 5,100 | +0.99% | 1,100 | 190億7400万 | -1.32% |
| 08/24 | 4,980 | 5,050 | 4,980 | 5,050 | -0.2% | 200 | 188億8700万 | -2.28% |
| 08/22 | 5,060 | 5,060 | 5,060 | 5,060 | 0% | 100 | 189億2440万 | -2.05% |
| 08/21 | 4,990 | 5,060 | 4,990 | 5,060 | +0.2% | 200 | 189億2440万 | -2.01% |
| 08/17 | 5,050 | 5,050 | 5,050 | 5,050 | -0.98% | 100 | 188億8700万 | -2.15% |
| 08/16 | 5,020 | 5,100 | 5,020 | 5,100 | -0.2% | 200 | 190億7400万 | -1.18% |
| 08/15 | 5,110 | 5,110 | 5,110 | 5,110 | -0.2% | 100 | 191億1140万 | -0.93% |
| 08/14 | 5,110 | 5,120 | 5,110 | 5,120 | 0% | 300 | 191億4880万 | -0.7% |
| 08/10 | 5,120 | 5,120 | 5,120 | 5,120 | -1.54% | 200 | 191億4880万 | -0.6% |
| 08/09 | （IR情報）15:30 平成31年3月期第1四半期決算短信〔日本基準〕(非連結) |
| 08/09 | 5,200 | 5,200 | 5,200 | 5,200 | +1.76% | 300 | 194億4800万 | +1.01% |
| 08/08 | 5,190 | 5,190 | 5,110 | 5,110 | +0.2% | 200 | 191億1140万 | -0.53% |
| 08/07 | 5,110 | 5,110 | 5,100 | 5,100 | -0.2% | 700 | 190億7400万 | -0.57% |
| 08/06 | 5,110 | 5,110 | 5,110 | 5,110 | -0.78% | 100 | 191億1140万 | -0.33% |
| 08/02 | 5,160 | 5,160 | 5,150 | 5,150 | 0% | 200 | 192億6100万 | +0.41% |
| 08/01 | 5,200 | 5,200 | 5,150 | 5,150 | -0.96% | 200 | 192億6100万 | +0.43% |
| 07/31 | 5,200 | 5,200 | 5,200 | 5,200 | -1.14% | 300 | 194億4800万 | +1.34% |
| 07/30 | 5,260 | 5,260 | 5,260 | 5,260 | 0% | 100 | 196億7240万 | +2.49% |
| 07/27 | 5,260 | 5,260 | 5,260 | 5,260 | -0.75% | 100 | 196億7240万 | +2.51% |
| 07/26 | 5,320 | 5,320 | 5,300 | 5,300 | -0.93% | 500 | 198億2200万 | +3.25% |
| 07/25 | 5,350 | 5,350 | 5,350 | 5,350 | +1.9% | 200 | 200億900万 | +4.29% |
| 07/24 | 5,250 | 5,250 | 5,250 | 5,250 | 0% | 100 | 196億3500万 | +2.44% |
| 07/23 | 5,220 | 5,250 | 5,220 | 5,250 | -0.19% | 400 | 196億3500万 | +2.44% |
| 07/20 | 5,380 | 5,380 | 5,180 | 5,260 | -1.31% | 600 | 196億7240万 | +2.67% |
| 07/19 | 5,300 | 5,400 | 5,300 | 5,330 | +3.5% | 600 | 199億3420万 | +4.06% |
| 07/18 | 5,150 | 5,250 | 5,150 | 5,150 | +0.98% | 400 | 192億6100万 | +0.64% |
| 07/13 | 5,100 | 5,100 | 5,100 | 5,100 | +2% | 100 | 190億7400万 | -0.45% |
| 07/12 | 5,010 | 5,010 | 5,000 | 5,000 | 0% | 200 | 187億 | -2.67% |
| 07/10 | 5,000 | 5,050 | 5,000 | 5,000 | +0.1% | 1,000 | 187億 | -2.95% |
| 07/09 | 5,000 | 5,000 | 4,995 | 4,995 | -0.89% | 200 | 186億8130万 | -3.29% |
| 06/27 | 5,050 | 5,050 | 5,040 | 5,040 | 0% | 200 | 188億4960万 | -2.65% |
| 06/26 | 5,040 | 5,040 | 5,040 | 5,040 | -0.2% | 100 | 188億4960万 | -2.85% |
| 06/25 | 5,050 | 5,050 | 5,050 | 5,050 | +1% | 100 | 188億8700万 | -2.85% |
| 06/22 | 5,040 | 5,040 | 5,000 | 5,000 | -0.79% | 200 | 187億 | -4.03% |
| 06/21 | 4,920 | 5,040 | 4,920 | 5,040 | +2.44% | 600 | 188億4960万 | -3.52% |
| 06/20 | 4,900 | 4,920 | 4,900 | 4,920 | -0.2% | 300 | 184億80万 | -6.05% |
| 06/19 | （IR情報）15:00 投資単位の引き下げに関する考え方及び方針について |
| 06/19 | （IR情報）15:00 支配株主等に関する事項について |
| 06/19 | （IR情報）15:00 公益財団法人財務会計基準機構への加入状況及び加入に関する考え方等に関するお知らせ |
| 06/19 | 5,030 | 5,030 | 4,930 | 4,930 | -1.99% | 1,400 | 184億3820万 | -6.17% |
| 06/18 | 5,100 | 5,100 | 5,030 | 5,030 | -2.52% | 300 | 188億1220万 | -4.75% |
| 06/14 | 5,160 | 5,170 | 5,160 | 5,160 | +0.58% | 500 | 192億9840万 | -2.75% |
| 06/12 | 5,230 | 5,230 | 5,130 | 5,130 | -1.72% | 1,900 | 191億8620万 | -3.82% |
| 06/11 | 5,250 | 5,250 | 5,220 | 5,220 | -0.19% | 500 | 195億2280万 | -2.7% |
| 06/08 | 5,230 | 5,230 | 5,230 | 5,230 | 0% | 200 | 195億6020万 | -3.02% |
| 06/07 | 5,330 | 5,330 | 5,230 | 5,230 | -1.88% | 200 | 195億6020万 | -3.51% |
| 06/01 | 5,330 | 5,330 | 5,330 | 5,330 | +2.11% | 200 | 199億3420万 | -2.04% |
| 05/25 | 5,220 | 5,220 | 5,220 | 5,220 | 0% | 700 | 195億2280万 | -4.43% |
| 05/24 | 5,220 | 5,220 | 5,220 | 5,220 | -0.38% | 300 | 195億2280万 | -4.81% |
| 05/22 | 5,240 | 5,240 | 5,240 | 5,240 | +0.38% | 100 | 195億9760万 | -4.85% |
| 05/21 | 5,220 | 5,220 | 5,220 | 5,220 | 0% | 400 | 195億2280万 | -5.61% |
| 05/10 | 5,130 | 5,220 | 5,130 | 5,220 | +0.38% | 300 | 195億2280万 | -6.01% |
| 05/09 | 5,210 | 5,220 | 5,200 | 5,200 | -1.89% | 1,000 | 194億4800万 | -6.83% |
| 05/08 | 5,400 | 5,400 | 5,300 | 5,300 | -2.75% | 800 | 198億2200万 | -5.46% |
| 05/07 | 5,450 | 5,450 | 5,450 | 5,450 | +1.11% | 100 | 203億8300万 | -3.13% |
| 05/01 | 5,390 | 5,390 | 5,390 | 5,390 | +1.32% | 100 | 201億5860万 | -4.57% |
| 04/27 | （IR情報）13:00 親会社等の決算に関するお知らせ |
| 04/27 | 5,330 | 5,330 | 5,320 | 5,320 | +0.57% | 300 | 198億9680万 | -6.21% |
| 04/25 | （IR情報）15:30 代表取締役の異動に関するお知らせ |
