| 2024 |
| 04/05 | （IR情報）15:30 2023年12月期決算補足資料 |
| 04/02 | 1,152 | 1,168 | 1,145 | 1,167 | +2.73% | 49,400 | 249億2712万 | +6.09% |
| 04/01 | 1,179 | 1,179 | 1,134 | 1,136 | -1.65% | 65,300 | 242億6496万 | +3.46% |
| 03/29 | （IR情報）15:30 財務報告に係る内部統制の開示すべき重要な不備に関するお知らせ |
| 03/29 | （IR情報）15:30 第23回定時株主総会の継続会の開催日時等に関するお知らせ |
| 03/29 | （IR情報）12:00 2023年12月期決算発表の遅延及び今後の決算開示に関するお知らせ |
| 03/29 | （IR情報）12:00 2023年12月期決算短信〔日本基準〕(連結) |
| 03/29 | 1,128 | 1,188 | 1,122 | 1,155 | +3.31% | 161,000 | 246億7080万 | +5.38% |
| 03/28 | 1,119 | 1,126 | 1,107 | 1,118 | -0.18% | 45,800 | 238億8048万 | +2.29% |
| 03/27 | 1,111 | 1,121 | 1,103 | 1,120 | +1.27% | 50,300 | 239億2320万 | +2.56% |
| 03/26 | （IR情報）16:30 特別調査委員会の調査報告書受領及び当社の対応に関するお知らせ |
| 03/26 | 1,100 | 1,107 | 1,094 | 1,106 | +0.64% | 29,000 | 236億2416万 | +1.37% |
| 03/25 | 1,100 | 1,102 | 1,092 | 1,099 | +0.73% | 48,500 | 234億7464万 | +0.92% |
| 03/22 | 1,089 | 1,092 | 1,086 | 1,091 | +0.37% | 13,600 | 233億376万 | +0.28% |
| 03/21 | 1,085 | 1,087 | 1,078 | 1,087 | +0.46% | 27,200 | 232億1832万 | 0% |
| 03/19 | 1,080 | 1,082 | 1,077 | 1,082 | +0.19% | 13,300 | 231億1152万 | -0.37% |
| 03/18 | 1,086 | 1,086 | 1,050 | 1,080 | -0.55% | 39,900 | 230億6880万 | -0.46% |
| 03/15 | 1,084 | 1,088 | 1,081 | 1,086 | +0.46% | 11,500 | 231億9696万 | +0.09% |
| 03/14 | 1,081 | 1,081 | 1,076 | 1,081 | +0.09% | 10,400 | 230億9016万 | -0.37% |
| 03/13 | 1,089 | 1,089 | 1,077 | 1,080 | -0.37% | 5,600 | 230億6880万 | -0.37% |
| 03/12 | 1,080 | 1,084 | 1,069 | 1,084 | +0.84% | 15,300 | 231億5424万 | -0.09% |
| 03/11 | 1,080 | 1,089 | 1,071 | 1,075 | -0.65% | 42,400 | 229億6200万 | -1.01% |
| 03/08 | 1,085 | 1,090 | 1,082 | 1,082 | -0.46% | 18,200 | 231億1152万 | -0.46% |
| 03/07 | 1,094 | 1,100 | 1,085 | 1,087 | -1.18% | 32,400 | 232億1832万 | -0.09% |
| 03/06 | （IR情報）17:00 第23回定時株主総会の継続会の開催方針に関するお知らせ |
| 03/06 | 1,099 | 1,103 | 1,095 | 1,100 | +0.09% | 8,500 | 234億9600万 | +1.01% |
| 03/05 | 1,100 | 1,102 | 1,090 | 1,099 | +0.73% | 15,200 | 234億7464万 | +0.92% |
| 03/04 | 1,103 | 1,103 | 1,090 | 1,091 | -0.46% | 17,600 | 233億376万 | +0.09% |
| 03/01 | 1,105 | 1,105 | 1,096 | 1,096 | -0.27% | 6,900 | 234億1056万 | +0.55% |
| 02/29 | 1,106 | 1,110 | 1,095 | 1,099 | -0.18% | 27,000 | 234億7464万 | +0.73% |
| 02/28 | 1,101 | 1,111 | 1,101 | 1,101 | 0% | 17,500 | 235億1736万 | +0.92% |
| 02/27 | 1,104 | 1,118 | 1,096 | 1,101 | -0.18% | 51,600 | 235億1736万 | +0.92% |
| 02/26 | （IR情報）15:00 支配株主等に関する事項について |
| 02/26 | 1,097 | 1,107 | 1,097 | 1,103 | +1.19% | 34,200 | 235億6008万 | +1.1% |
| 02/22 | 1,090 | 1,098 | 1,089 | 1,090 | +0.18% | 19,600 | 232億8240万 | -0.09% |
| 02/21 | 1,095 | 1,095 | 1,080 | 1,088 | -1% | 21,400 | 232億3968万 | -0.27% |
| 02/20 | 1,089 | 1,100 | 1,085 | 1,099 | +1.76% | 59,200 | 234億7464万 | +0.64% |
| 02/19 | 1,074 | 1,080 | 1,068 | 1,080 | +0.56% | 16,800 | 230億6880万 | -1.1% |
| 02/16 | 1,068 | 1,074 | 1,052 | 1,074 | +0.94% | 59,700 | 229億4064万 | -1.74% |
| 02/15 | 1,078 | 1,078 | 1,058 | 1,064 | -0.47% | 48,800 | 227億2704万 | -2.74% |
| 02/14 | 1,068 | 1,077 | 1,065 | 1,069 | +0.38% | 18,200 | 228億3384万 | -2.37% |
| 02/13 | 1,069 | 1,072 | 1,061 | 1,065 | +0.47% | 25,400 | 227億4840万 | -2.83% |
| 02/09 | （IR情報）15:00 剰余金の配当に関するお知らせ |
| 02/09 | 1,066 | 1,067 | 1,058 | 1,060 | -0.56% | 27,600 | 226億4160万 | -3.46% |
| 02/08 | 1,082 | 1,083 | 1,058 | 1,066 | -1.48% | 45,400 | 227億6976万 | -3% |
| 02/07 | 1,060 | 1,082 | 1,058 | 1,082 | +2.56% | 48,400 | 231億1152万 | -1.64% |
| 02/06 | 1,017 | 1,068 | 985 | 1,055 | -4.7% | 281,700 | 225億3480万 | -4.09% |
| 02/06 | （IR情報）8:50 特別調査委員会の設置及び2023年12月期決算発表の延期に関するお知らせ |
| 02/05 | 1,105 | 1,110 | 1,103 | 1,107 | +0.18% | 19,600 | 236億4552万 | +0.45% |
| 02/02 | 1,109 | 1,110 | 1,099 | 1,105 | +0.09% | 12,500 | 236億280万 | +0.27% |
| 02/01 | 1,113 | 1,120 | 1,094 | 1,104 | -1.78% | 62,800 | 235億8144万 | +0.18% |
| 01/31 | 1,109 | 1,124 | 1,109 | 1,124 | +1.44% | 53,000 | 240億864万 | +1.9% |
| 01/30 | 1,109 | 1,109 | 1,103 | 1,108 | +0.09% | 10,600 | 236億6688万 | +0.45% |
| 01/29 | 1,105 | 1,108 | 1,100 | 1,107 | +0.27% | 24,500 | 236億4552万 | +0.36% |
| 01/26 | 1,107 | 1,108 | 1,104 | 1,104 | -0.27% | 10,800 | 235億8144万 | +0.09% |
| 01/25 | 1,104 | 1,107 | 1,102 | 1,107 | +0.18% | 14,800 | 236億4552万 | +0.36% |
| 01/24 | 1,102 | 1,106 | 1,100 | 1,105 | +0.27% | 29,800 | 236億280万 | +0.18% |
| 01/23 | 1,100 | 1,104 | 1,100 | 1,102 | +0.27% | 20,600 | 235億3872万 | -0.18% |
| 01/22 | 1,100 | 1,101 | 1,095 | 1,099 | -0.09% | 24,100 | 234億7464万 | -0.45% |
| 01/19 | 1,100 | 1,101 | 1,096 | 1,100 | 0% | 25,600 | 234億9600万 | -0.45% |
| 01/18 | 1,102 | 1,105 | 1,100 | 1,100 | -0.18% | 8,400 | 234億9600万 | -0.54% |
| 01/17 | 1,105 | 1,106 | 1,101 | 1,102 | 0% | 13,200 | 235億3872万 | -0.36% |
| 01/16 | 1,107 | 1,107 | 1,102 | 1,102 | -0.09% | 9,200 | 235億3872万 | -0.45% |
| 01/15 | 1,102 | 1,106 | 1,099 | 1,103 | +0.27% | 24,600 | 235億6008万 | -0.45% |
| 01/12 | 1,092 | 1,100 | 1,092 | 1,100 | 0% | 25,700 | 234億9600万 | -0.81% |
| 01/11 | 1,101 | 1,102 | 1,097 | 1,100 | +0.18% | 25,100 | 234億9600万 | -0.9% |
| 01/10 | 1,097 | 1,101 | 1,096 | 1,098 | -0.18% | 29,800 | 234億5328万 | -1.17% |
| 01/09 | 1,095 | 1,105 | 1,095 | 1,100 | +0.18% | 31,000 | 234億9600万 | -0.99% |
| 01/05 | 1,097 | 1,104 | 1,094 | 1,098 | +0.09% | 32,200 | 234億5328万 | -1.26% |
| 01/04 | 1,090 | 1,097 | 1,084 | 1,097 | +0.73% | 34,700 | 234億3192万 | -1.35% |
| 2023 |
| 12/29 | 1,090 | 1,090 | 1,084 | 1,089 | +0.46% | 18,500 | 232億6104万 | -2.16% |
| 12/28 | 1,075 | 1,091 | 1,075 | 1,084 | -2.17% | 42,100 | 231億5424万 | -2.69% |
| 12/27 | 1,108 | 1,116 | 1,107 | 1,108 | -0.18% | 68,300 | 236億6688万 | -0.63% |
| 12/26 | 1,107 | 1,120 | 1,105 | 1,110 | 0% | 34,200 | 237億960万 | -0.45% |
| 12/25 | 1,117 | 1,119 | 1,108 | 1,110 | -0.63% | 37,900 | 237億960万 | -0.45% |
| 12/22 | 1,115 | 1,124 | 1,115 | 1,117 | 0% | 12,900 | 238億5912万 | +0.27% |
| 12/21 | 1,114 | 1,123 | 1,113 | 1,117 | +0.27% | 18,400 | 238億5912万 | +0.36% |
| 12/20 | 1,113 | 1,119 | 1,112 | 1,114 | +0.63% | 12,100 | 237億9504万 | +0.18% |
| 12/19 | 1,107 | 1,115 | 1,106 | 1,107 | -0.27% | 12,900 | 236億4552万 | -0.36% |
| 12/18 | 1,110 | 1,112 | 1,100 | 1,110 | 0% | 26,700 | 237億960万 | 0% |
| 12/15 | （IR情報）17:00 半導体関連工場(北海道苫小牧市)の建設について |
| 12/15 | 1,120 | 1,120 | 1,110 | 1,110 | -0.09% | 11,600 | 237億960万 | +0.09% |
| 12/14 | 1,122 | 1,122 | 1,109 | 1,111 | -0.71% | 13,100 | 237億3096万 | +0.27% |
| 12/13 | 1,118 | 1,125 | 1,112 | 1,119 | +0.09% | 20,200 | 239億184万 | +0.99% |
| 12/12 | 1,120 | 1,122 | 1,117 | 1,118 | -0.18% | 12,600 | 238億8048万 | +0.99% |
| 12/11 | 1,120 | 1,120 | 1,117 | 1,120 | +0.27% | 10,900 | 239億2320万 | +1.27% |
| 12/08 | 1,122 | 1,125 | 1,115 | 1,117 | -0.53% | 16,300 | 238億5912万 | +1.09% |
| 12/07 | 1,128 | 1,128 | 1,123 | 1,123 | -0.18% | 7,800 | 239億8728万 | +1.63% |
| 12/06 | 1,128 | 1,130 | 1,125 | 1,125 | -0.27% | 13,600 | 240億3000万 | +1.99% |
| 12/05 | 1,123 | 1,128 | 1,122 | 1,128 | +0.53% | 18,300 | 240億9408万 | +2.36% |
| 12/04 | 1,119 | 1,122 | 1,113 | 1,122 | +0.72% | 16,000 | 239億6592万 | +2% |
| 12/01 | 1,117 | 1,117 | 1,110 | 1,114 | +0.18% | 11,500 | 237億9504万 | +1.46% |
| 11/30 | 1,116 | 1,118 | 1,110 | 1,112 | -0.36% | 12,400 | 237億5232万 | +1.37% |
| 11/29 | 1,119 | 1,119 | 1,107 | 1,116 | +0.36% | 14,700 | 238億3776万 | +1.82% |
| 11/28 | 1,118 | 1,118 | 1,100 | 1,112 | -0.36% | 28,400 | 237億5232万 | +1.46% |
| 11/27 | 1,119 | 1,120 | 1,109 | 1,116 | +0.36% | 17,200 | 238億3776万 | +1.92% |
| 11/24 | 1,120 | 1,120 | 1,110 | 1,112 | -0.09% | 15,600 | 237億5232万 | +1.55% |
| 11/22 | 1,106 | 1,113 | 1,100 | 1,113 | +1% | 15,500 | 237億7368万 | +1.74% |
| 11/21 | 1,103 | 1,107 | 1,100 | 1,102 | 0% | 7,700 | 235億3872万 | +0.82% |
| 11/20 | 1,100 | 1,104 | 1,094 | 1,102 | +0.64% | 8,000 | 235億3872万 | +0.82% |
| 11/17 | 1,096 | 1,098 | 1,092 | 1,095 | +0.27% | 6,100 | 233億8920万 | +0.09% |
| 11/16 | 1,095 | 1,095 | 1,088 | 1,092 | +0.18% | 6,900 | 233億2512万 | -0.18% |
| 11/15 | 1,091 | 1,091 | 1,085 | 1,090 | +0.28% | 11,000 | 232億8240万 | -0.46% |
| 11/14 | （IR情報）15:00 業績連動型株式報酬制度(従業員向け)導入に関するお知らせ |
| 11/14 | 1,091 | 1,091 | 1,087 | 1,087 | -0.37% | 6,700 | 232億1832万 | -0.82% |
| 11/13 | 1,084 | 1,094 | 1,084 | 1,091 | +0.37% | 12,800 | 233億376万 | -0.46% |
| 11/10 | 1,087 | 1,089 | 1,083 | 1,087 | 0% | 9,800 | 232億1832万 | -0.91% |
| 11/09 | 1,080 | 1,087 | 1,075 | 1,087 | -0.18% | 36,000 | 232億1832万 | -0.91% |
| 11/08 | （IR情報）15:00 2023年12月期第3四半期決算補足資料 |
| 11/08 | （IR情報）15:00 2023年12月期第3四半期決算短信〔日本基準〕(連結) |
| 11/08 | 1,095 | 1,098 | 1,089 | 1,089 | -0.73% | 19,600 | 232億6104万 | -0.82% |
| 11/07 | 1,108 | 1,108 | 1,097 | 1,097 | -0.72% | 18,100 | 234億3192万 | -0.18% |
| 11/06 | 1,103 | 1,110 | 1,103 | 1,105 | +0.27% | 18,300 | 236億280万 | +0.36% |
| 11/02 | 1,102 | 1,102 | 1,095 | 1,102 | +0.64% | 10,700 | 235億3872万 | 0% |
