| 2018 |
| 07/04 | 1,311 | 1,311 | 1,230 | 1,230 | -7.24% | 11,500 | 55億6575万 | +6.96% |
| 07/03 | 1,400 | 1,400 | 1,310 | 1,326 | -7.27% | 22,900 | 60億15万 | +16.32% |
| 07/02 | 1,500 | 1,500 | 1,420 | 1,430 | -5.74% | 17,900 | 64億7075万 | +26.89% |
| 06/29 | 1,500 | 1,525 | 1,462 | 1,517 | +3.76% | 26,400 | 68億6442万 | +36.67% |
| 06/28 | 17:00 支配株主等に関する事項について |
| 06/28 | 1,442 | 1,465 | 1,419 | 1,462 | +3.25% | 19,200 | 66億1555万 | +34.25% |
| 06/27 | 1,400 | 1,455 | 1,400 | 1,416 | -0.28% | 13,200 | 64億740万 | +32.21% |
| 06/26 | 13:30 地球惑星科学連合2018年大会での研究成果発表と新型計測震度計の販売開始について |
| 06/26 | 1,289 | 1,579 | 1,275 | 1,420 | +10.16% | 80,200 | 64億2550万 | +34.34% |
| 06/25 | 1,265 | 1,317 | 1,251 | 1,289 | +3.53% | 16,700 | 58億3272万 | +23.7% |
| 06/22 | 1,235 | 1,282 | 1,234 | 1,245 | +0.89% | 20,500 | 56億3362万 | +20.52% |
| 06/21 | 1,145 | 1,261 | 1,120 | 1,234 | +2.83% | 46,100 | 55億8385万 | +20.39% |
| 06/20 | 1,150 | 1,200 | 1,150 | 1,200 | +6.38% | 26,300 | 54億3000万 | +17.99% |
| 06/19 | 1,058 | 1,134 | 1,053 | 1,128 | +3.68% | 13,000 | 51億420万 | +11.46% |
| 06/18 | 1,085 | 1,095 | 1,040 | 1,088 | -0.09% | 4,100 | 49億2320万 | +7.51% |
| 06/15 | 968 | 1,099 | 968 | 1,089 | +12.5% | 11,800 | 49億2772万 | +7.29% |
| 06/14 | 17:30 (訂正・数値データの修正)「平成30年3月期決算短信〔日本基準〕(連結)」の一部訂正について |
| 06/13 | 960 | 968 | 950 | 968 | +0.41% | 3,400 | 43億8020万 | -4.72% |
| 06/12 | 964 | 964 | 960 | 964 | -0.62% | 1,700 | 43億6210万 | -5.77% |
| 06/11 | 968 | 970 | 965 | 970 | -0.72% | 1,100 | 43億8925万 | -5.73% |
| 06/08 | 984 | 984 | 975 | 977 | -0.71% | 2,000 | 44億2092万 | -5.79% |
| 06/07 | 984 | 984 | 970 | 984 | +0.72% | 900 | 44億5260万 | -5.75% |
| 06/06 | 950 | 977 | 950 | 977 | +1.35% | 2,800 | 44億2092万 | -6.95% |
| 06/05 | 989 | 990 | 964 | 964 | -1.13% | 2,000 | 43億6210万 | -8.63% |
| 06/04 | 982 | 990 | 969 | 975 | +0.1% | 6,900 | 44億1187万 | -8.19% |
| 06/01 | 986 | 986 | 969 | 974 | +2.2% | 1,400 | 44億735万 | -8.89% |
| 05/31 | 965 | 965 | 951 | 953 | -1.24% | 700 | 43億1232万 | -11.6% |
| 05/30 | 980 | 980 | 965 | 965 | -3.02% | 4,700 | 43億6662万 | -11.06% |
| 05/29 | 1,011 | 1,029 | 990 | 995 | -0.1% | 4,400 | 45億237万 | -8.97% |
| 05/28 | 998 | 998 | 994 | 996 | -0.1% | 4,200 | 45億690万 | -9.54% |
| 05/25 | 1,004 | 1,005 | 996 | 997 | -0.89% | 6,200 | 45億1142万 | -9.94% |
| 05/24 | 1,006 | 1,013 | 998 | 1,006 | -0.69% | 5,900 | 45億5215万 | -9.45% |
| 05/23 | 1,040 | 1,054 | 1,011 | 1,013 | -4.25% | 4,100 | 45億8382万 | -9.07% |
| 05/22 | 1,053 | 1,060 | 1,040 | 1,058 | +0.47% | 2,500 | 47億8745万 | -5.2% |
| 05/21 | 1,051 | 1,060 | 1,030 | 1,053 | +0.19% | 2,900 | 47億6482万 | -5.56% |
| 05/18 | 1,038 | 1,083 | 1,018 | 1,051 | +1.15% | 11,600 | 47億5577万 | -5.74% |
| 05/17 | 1,026 | 1,039 | 1,021 | 1,039 | -0.1% | 2,400 | 47億147万 | -6.9% |
| 05/16 | 1,098 | 1,098 | 1,002 | 1,040 | -4.06% | 9,100 | 47億600万 | -7.06% |
| 05/15 | 1,150 | 1,150 | 984 | 1,084 | -3.9% | 45,100 | 49億510万 | -3.47% |
| 05/14 | 16:00 役員の異動に関するお知らせ |
| 05/14 | 16:00 平成30年3月期決算短信〔日本基準〕(連結) |
| 05/14 | 1,149 | 1,150 | 1,121 | 1,128 | -1.74% | 2,900 | 51億420万 | +0.09% |
| 05/11 | 16:00 業績予想の修正に関するお知らせ |
| 05/11 | 1,130 | 1,173 | 1,122 | 1,148 | +2.41% | 4,600 | 51億9470万 | +1.77% |
| 05/10 | 1,140 | 1,140 | 1,121 | 1,121 | -2.18% | 900 | 50億7252万 | -0.71% |
| 05/09 | 1,147 | 1,148 | 1,121 | 1,146 | +2.6% | 2,500 | 51億8565万 | +1.33% |
| 05/08 | 1,168 | 1,168 | 1,090 | 1,117 | -3.29% | 3,400 | 50億5442万 | -1.41% |
| 05/07 | 1,169 | 1,169 | 1,135 | 1,155 | -1.2% | 1,800 | 52億2637万 | +1.58% |
| 05/02 | 1,128 | 1,173 | 1,128 | 1,169 | +3.91% | 2,800 | 52億8972万 | +2.54% |
| 05/01 | 1,115 | 1,135 | 1,115 | 1,125 | +0.9% | 1,100 | 50億9062万 | -1.57% |
| 04/27 | 1,159 | 1,159 | 1,062 | 1,115 | -1.59% | 12,400 | 50億4537万 | -2.62% |
| 04/26 | 1,122 | 1,147 | 1,110 | 1,133 | -1.05% | 3,400 | 51億2682万 | -1.22% |
| 04/25 | 1,177 | 1,177 | 1,122 | 1,145 | -3.54% | 1,600 | 51億8112万 | -0.26% |
| 04/24 | 16:00 「内部統制システムの構築に関する基本方針」の一部改定に関するお知らせ |
| 04/24 | 1,120 | 1,194 | 1,120 | 1,187 | +4.31% | 3,000 | 53億7117万 | +3.31% |
| 04/23 | 1,156 | 1,156 | 1,120 | 1,138 | -2.9% | 1,300 | 51億4945万 | -0.78% |
| 04/20 | 1,157 | 1,175 | 1,127 | 1,172 | -1.26% | 2,400 | 53億330万 | +1.91% |
| 04/19 | 1,151 | 1,194 | 1,151 | 1,187 | +3.31% | 8,200 | 53億7117万 | +3.04% |
| 04/18 | 1,091 | 1,149 | 1,091 | 1,149 | +5.32% | 8,300 | 51億9922万 | -0.17% |
| 04/17 | 1,084 | 1,094 | 1,081 | 1,091 | +0.65% | 6,400 | 49億3677万 | -5.54% |
| 04/16 | 1,079 | 1,100 | 1,061 | 1,084 | +1.5% | 10,800 | 49億510万 | -6.71% |
| 04/13 | 1,038 | 1,070 | 1,037 | 1,068 | +2.89% | 4,900 | 48億3270万 | -8.95% |
| 04/12 | 1,037 | 1,038 | 1,013 | 1,038 | 0% | 14,600 | 46億9695万 | -12.55% |
| 04/11 | 1,080 | 1,083 | 1,037 | 1,038 | -4.24% | 12,700 | 46億9695万 | -12.77% |
| 04/10 | 1,104 | 1,104 | 1,080 | 1,084 | -3.21% | 5,500 | 49億510万 | -8.68% |
| 04/09 | 1,142 | 1,142 | 1,104 | 1,120 | -1.93% | 6,500 | 50億6800万 | -5.17% |
| 04/06 | 1,199 | 1,199 | 1,142 | 1,142 | -2.31% | 2,500 | 51億6755万 | -2.89% |
| 04/05 | 1,159 | 1,192 | 1,159 | 1,169 | +0.86% | 2,200 | 52億8972万 | -0.09% |
| 04/04 | 1,153 | 1,165 | 1,153 | 1,159 | -1.45% | 2,200 | 52億4447万 | -0.26% |
| 04/03 | 1,130 | 1,176 | 1,126 | 1,176 | +1.55% | 3,600 | 53億2140万 | +1.91% |
| 04/02 | 1,195 | 1,195 | 1,157 | 1,158 | -3.1% | 6,400 | 52億3995万 | +1.14% |
| 03/30 | 1,231 | 1,235 | 1,184 | 1,195 | -2.92% | 6,900 | 54億737万 | +5.01% |
| 03/29 | 1,228 | 1,244 | 1,223 | 1,231 | +0.24% | 2,800 | 55億7027万 | +9.13% |
| 03/28 | 1,271 | 1,271 | 1,210 | 1,228 | -0.97% | 16,100 | 55億5670万 | +9.94% |
| 03/27 | 1,190 | 1,266 | 1,175 | 1,240 | +5.08% | 9,900 | 56億1100万 | +12.22% |
| 03/26 | 1,121 | 1,193 | 1,121 | 1,180 | +2.52% | 12,400 | 53億3950万 | +8.06% |
| 03/23 | 11:55 東京メトロ様向け新型券売機納入のお知らせ |
| 03/23 | 1,109 | 1,169 | 1,081 | 1,151 | -1.54% | 28,100 | 52億827万 | +6.38% |
| 03/22 | 1,161 | 1,187 | 1,158 | 1,169 | -0.34% | 7,800 | 52億8972万 | +9.15% |
| 03/20 | 1,121 | 1,173 | 1,117 | 1,173 | +3.44% | 13,500 | 53億782万 | +10.76% |
| 03/19 | 1,215 | 1,230 | 1,125 | 1,134 | -5.89% | 30,900 | 51億3135万 | +8.31% |
| 03/16 | 1,194 | 1,213 | 1,189 | 1,205 | -1.15% | 20,400 | 54億5262万 | +15.98% |
| 03/15 | 16:00 大型受注に関するお知らせ |
| 03/15 | 16:00 組織変更、役員人事異動及び人事異動に関するお知らせ |
| 03/15 | 16:00 取締役の辞任に関するお知らせ |
| 03/15 | 16:00 業績予想の修正に関するお知らせ |
| 03/15 | 1,193 | 1,219 | 1,182 | 1,219 | +3.13% | 25,700 | 55億1597万 | +18.58% |
| 03/14 | 1,220 | 1,223 | 1,182 | 1,182 | -4.06% | 25,200 | 53億4855万 | +16.34% |
| 03/13 | 1,280 | 1,280 | 1,213 | 1,232 | -3.98% | 41,500 | 55億7480万 | +22.34% |
| 03/12 | 1,461 | 1,461 | 1,264 | 1,283 | -4.33% | 91,200 | 58億557万 | +28.69% |
| 03/09 | 1,586 | 1,650 | 1,286 | 1,341 | -5.3% | 440,400 | 60億6802万 | +36.28% |
| 03/08 | 1,416 | 1,416 | 1,416 | 1,416 | +26.88% | 21,200 | 64億740万 | +45.98% |
| 03/07 | 1,116 | 1,116 | 1,116 | 1,116 | +15.53% | 37,400 | 50億4990万 | +17.1% |
| 03/06 | 952 | 996 | 952 | 966 | +1.68% | 1,100 | 43億7115万 | +1.9% |
| 03/05 | 990 | 990 | 946 | 950 | -3.94% | 1,400 | 42億9875万 | +0.21% |
| 03/02 | 996 | 996 | 989 | 989 | -0.7% | 1,200 | 44億7522万 | +4.11% |
| 03/01 | 961 | 996 | 960 | 996 | +3.64% | 6,900 | 45億690万 | +4.73% |
| 02/28 | 950 | 963 | 950 | 961 | +1.16% | 600 | 43億4852万 | +1.05% |
| 02/27 | 940 | 970 | 940 | 950 | -2.06% | 2,000 | 42億9875万 | -0.31% |
| 02/26 | 970 | 970 | 970 | 970 | -0.41% | 700 | 43億8925万 | +1.57% |
| 02/23 | 931 | 974 | 931 | 974 | +2.96% | 3,500 | 44億735万 | +1.78% |
| 02/21 | 946 | 974 | 946 | 946 | +0.11% | 3,400 | 42億8065万 | -1.25% |
| 02/20 | 940 | 945 | 940 | 945 | +0.75% | 700 | 42億7612万 | -1.66% |
| 02/19 | 917 | 940 | 916 | 938 | +2.07% | 1,500 | 42億4445万 | -2.7% |
| 02/16 | 933 | 940 | 919 | 919 | -0.33% | 2,100 | 41億5847万 | -5.06% |
| 02/15 | 863 | 924 | 863 | 922 | +5.25% | 3,300 | 41億7205万 | -5.14% |
| 02/14 | 16:00 平成30年3月期第3四半期決算短信〔日本基準〕(連結) |
| 02/14 | 908 | 908 | 863 | 876 | -0.23% | 1,400 | 39億6390万 | -10.25% |
| 02/13 | 872 | 889 | 872 | 878 | +0.92% | 1,500 | 39億7295万 | -10.59% |
| 02/09 | 891 | 891 | 850 | 870 | -5.54% | 4,500 | 39億3675万 | -11.94% |
| 02/08 | 929 | 929 | 920 | 921 | -0.86% | 3,400 | 41億6752万 | -7.25% |
| 02/07 | 959 | 959 | 923 | 929 | +0.65% | 4,200 | 42億372万 | -6.73% |
| 02/06 | 941 | 941 | 920 | 923 | -3.85% | 4,100 | 41億7657万 | -7.52% |
