| 2023 |
| 04/26 | （IR情報）15:00 当社株式の上場廃止に関するお知らせ |
| 04/26 | 1,696 | 1,698 | 1,696 | 1,696 | -0.06% | 28,000 | 1828億8382万 | -0.06% |
| 04/25 | 1,696 | 1,699 | 1,696 | 1,697 | +0.06% | 4,500 | 1829億9165万 | 0% |
| 04/24 | 1,696 | 1,699 | 1,696 | 1,696 | -0.18% | 28,000 | 1828億8382万 | -0.06% |
| 04/21 | 1,697 | 1,700 | 1,696 | 1,699 | +0.12% | 19,500 | 1832億732万 | +0.12% |
| 04/20 | 1,697 | 1,699 | 1,697 | 1,697 | -0.12% | 6,300 | 1829億9165万 | 0% |
| 04/19 | 1,699 | 1,700 | 1,699 | 1,699 | 0% | 12,200 | 1832億732万 | +0.12% |
| 04/18 | 1,700 | 1,700 | 1,699 | 1,699 | 0% | 24,700 | 1832億732万 | +0.12% |
| 04/17 | 1,699 | 1,700 | 1,699 | 1,699 | 0% | 22,400 | 1832億732万 | +0.12% |
| 04/14 | 1,700 | 1,700 | 1,699 | 1,699 | 0% | 48,600 | 1832億732万 | +0.18% |
| 04/13 | 1,696 | 1,700 | 1,696 | 1,699 | +0.18% | 159,700 | 1832億732万 | +0.18% |
| 04/12 | 1,696 | 1,697 | 1,696 | 1,696 | 0% | 31,700 | 1828億8382万 | 0% |
| 04/11 | 1,697 | 1,699 | 1,695 | 1,696 | 0% | 45,500 | 1828億8382万 | 0% |
| 04/10 | 1,696 | 1,697 | 1,695 | 1,696 | +0.06% | 124,300 | 1828億8382万 | 0% |
| 04/07 | （5%ルール）住友電気工業（99.11%） |
| 04/07 | 1,696 | 1,696 | 1,695 | 1,695 | 0% | 297,700 | 1827億7599万 | -0.06% |
| 04/06 | 1,695 | 1,697 | 1,695 | 1,695 | 0% | 245,300 | 1827億7599万 | -0.06% |
| 04/05 | 1,695 | 1,696 | 1,694 | 1,695 | 0% | 421,500 | 1827億7599万 | -0.06% |
| 04/04 | 1,694 | 1,697 | 1,694 | 1,695 | +0.06% | 471,600 | 1827億7599万 | -0.06% |
| 04/03 | 1,697 | 1,698 | 1,694 | 1,694 | -0.18% | 690,600 | 1826億6816万 | -0.12% |
| 03/31 | （IR情報）15:00 住友電気工業株式会社による当社株式に係る株式売渡請求を行うことの決定、当該株式売渡請求に係る承認及び当社株式の上場廃止に関するお知らせ |
| 03/31 | 1,701 | 1,704 | 1,697 | 1,697 | -0.06% | 74,700 | 1829億9165万 | 0% |
| 03/30 | 1,698 | 1,700 | 1,696 | 1,698 | 0% | 111,600 | 1830億9949万 | +0.12% |
| 03/29 | （5%ルール）住友電気工業（92.58%） |
| 03/29 | 1,696 | 1,698 | 1,695 | 1,698 | +0.18% | 135,600 | 1830億9949万 | +0.12% |
| 03/28 | 1,698 | 1,700 | 1,695 | 1,695 | -0.12% | 251,800 | 1827億7599万 | -0.06% |
| 03/27 | 1,698 | 1,701 | 1,697 | 1,697 | -0.06% | 139,000 | 1829億9165万 | +0.06% |
| 03/24 | 1,698 | 1,700 | 1,697 | 1,698 | -0.18% | 56,700 | 1830億9949万 | +0.12% |
| 03/23 | （IR情報）15:00 支配株主である住友電気工業株式会社による当社株式に対する公開買付けの結果に関するお知らせ |
| 03/23 | （IR情報）15:00 (開示事項の経過)臨時株主総会の不開催及び基準日の取消しに関するお知らせ |
| 03/23 | 1,698 | 1,730 | 1,696 | 1,701 | +0.29% | 141,800 | 1834億2298万 | +0.29% |
| 03/22 | 1,697 | 1,699 | 1,696 | 1,696 | +0.12% | 145,700 | 1828億8382万 | 0% |
| 03/20 | 1,695 | 1,696 | 1,694 | 1,694 | -0.12% | 170,200 | 1826億6816万 | -0.12% |
| 03/17 | 1,697 | 1,698 | 1,696 | 1,696 | 0% | 296,400 | 1828億8382万 | -0.06% |
| 03/16 | 1,696 | 1,699 | 1,696 | 1,696 | -0.06% | 195,500 | 1828億8382万 | -0.06% |
| 03/15 | （IR情報）15:00 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 |
| 03/15 | 1,697 | 1,698 | 1,696 | 1,697 | +0.06% | 292,400 | 1829億9165万 | -0.06% |
| 03/14 | 1,697 | 1,697 | 1,696 | 1,696 | -0.06% | 300,300 | 1828億8382万 | -0.12% |
| 03/13 | 1,696 | 1,697 | 1,696 | 1,697 | +0.06% | 256,400 | 1829億9165万 | -0.06% |
| 03/10 | 1,697 | 1,698 | 1,696 | 1,696 | 0% | 288,800 | 1828億8382万 | -0.12% |
| 03/09 | 1,697 | 1,697 | 1,696 | 1,696 | 0% | 350,200 | 1828億8382万 | +0.59% |
| 03/08 | 1,697 | 1,697 | 1,696 | 1,696 | 0% | 260,500 | 1828億8382万 | +1.37% |
| 03/07 | 1,697 | 1,697 | 1,696 | 1,696 | 0% | 208,300 | 1828億8382万 | +2.29% |
| 03/06 | 1,697 | 1,697 | 1,696 | 1,696 | 0% | 258,200 | 1828億8382万 | +3.16% |
| 03/03 | 1,697 | 1,697 | 1,696 | 1,696 | -0.06% | 393,700 | 1828億8382万 | +4.11% |
| 03/02 | 1,697 | 1,697 | 1,696 | 1,697 | +0.06% | 513,800 | 1829億9165万 | +5.08% |
| 03/01 | 1,696 | 1,697 | 1,696 | 1,696 | 0% | 341,100 | 1828億8382万 | +6% |
| 02/28 | 1,697 | 1,697 | 1,696 | 1,696 | 0% | 818,900 | 1828億8382万 | +7% |
| 02/27 | 1,697 | 1,698 | 1,696 | 1,696 | 0% | 1,079,100 | 1828億8382万 | +8.03% |
| 02/24 | 1,697 | 1,699 | 1,696 | 1,696 | 0% | 664,300 | 1828億8382万 | +9.21% |
| 02/22 | 1,698 | 1,699 | 1,696 | 1,696 | 0% | 858,100 | 1828億8382万 | +10.34% |
| 02/21 | 1,696 | 1,697 | 1,696 | 1,696 | 0% | 449,800 | 1828億8382万 | +11.51% |
| 02/20 | 1,697 | 1,697 | 1,696 | 1,696 | 0% | 613,800 | 1828億8382万 | +12.69% |
| 02/17 | 1,697 | 1,698 | 1,696 | 1,696 | 0% | 526,500 | 1828億8382万 | +13.9% |
| 02/16 | 1,698 | 1,700 | 1,696 | 1,696 | -0.06% | 638,600 | 1828億8382万 | +15.14% |
| 02/15 | 1,699 | 1,702 | 1,697 | 1,697 | -0.12% | 858,200 | 1829億9165万 | +16.47% |
| 02/14 | 1,702 | 1,705 | 1,699 | 1,699 | -0.06% | 699,700 | 1832億732万 | +17.9% |
| 02/13 | 1,702 | 1,705 | 1,699 | 1,700 | -0.35% | 936,900 | 1833億1515万 | +19.3% |
| 02/10 | 1,711 | 1,713 | 1,704 | 1,706 | -0.18% | 907,200 | 1839億6215万 | +21.08% |
| 02/09 | 1,715 | 1,722 | 1,705 | 1,709 | -0.64% | 1,068,100 | 1842億8564万 | +22.77% |
| 02/08 | 1,702 | 1,740 | 1,699 | 1,720 | +1.18% | 1,942,100 | 1854億7180万 | +25.09% |
| 02/07 | 1,698 | 1,704 | 1,698 | 1,700 | +0.18% | 1,209,900 | 1833億1515万 | +25.37% |
| 02/06 | 1,697 | 1,700 | 1,696 | 1,697 | +0.65% | 2,656,900 | 1829億9165万 | +26.74% |
| 02/03 | 1,686 | 1,686 | 1,686 | 1,686 | +21.65% | 130,100 | 1818億550万 | +27.53% |
| 02/02 | （IR情報）15:00 支配株主である住友電気工業株式会社による当社株式に対する公開買付けに関する賛同の意見表明及び応募推奨のお知らせ |
| 02/02 | （IR情報）15:00 2023年3月期の期末配当予想の修正(無配)に関するお知らせ |
| 02/02 | 1,365 | 1,391 | 1,364 | 1,386 | +0.95% | 151,700 | 1494億5576万 | +6.21% |
| 02/01 | 1,366 | 1,417 | 1,364 | 1,373 | +2.46% | 286,200 | 1480億5394万 | +5.53% |
| 01/31 | （IR情報）15:00 2023年3月期第3四半期決算短信〔日本基準〕(連結) |
| 01/31 | 1,336 | 1,357 | 1,334 | 1,340 | +1.13% | 145,500 | 1444億9547万 | +3.32% |
| 01/30 | 1,337 | 1,338 | 1,325 | 1,325 | -1.05% | 109,600 | 1428億7798万 | +2.4% |
| 01/27 | 1,334 | 1,345 | 1,331 | 1,339 | +0.75% | 88,000 | 1443億8764万 | +3.72% |
| 01/26 | 1,334 | 1,337 | 1,325 | 1,329 | -0.23% | 57,700 | 1433億931万 | +3.18% |
| 01/25 | 1,331 | 1,341 | 1,325 | 1,332 | +0.15% | 102,600 | 1436億3281万 | +3.42% |
| 01/24 | 1,311 | 1,332 | 1,304 | 1,330 | +2.15% | 163,500 | 1434億1715万 | +3.34% |
| 01/23 | 1,301 | 1,306 | 1,295 | 1,302 | +1.24% | 64,800 | 1403億9784万 | +1.24% |
| 01/20 | 1,280 | 1,289 | 1,278 | 1,286 | +0.08% | 76,300 | 1386億7252万 | 0% |
| 01/19 | 1,287 | 1,299 | 1,282 | 1,285 | -0.62% | 91,800 | 1385億6469万 | -0.16% |
| 01/18 | 1,301 | 1,301 | 1,281 | 1,293 | -0.23% | 87,000 | 1394億2735万 | +0.39% |
| 01/17 | 1,293 | 1,308 | 1,292 | 1,296 | +0.23% | 66,700 | 1397億5084万 | +0.62% |
| 01/16 | 1,290 | 1,303 | 1,287 | 1,293 | -0.61% | 60,500 | 1394億2735万 | +0.47% |
| 01/13 | 1,300 | 1,326 | 1,298 | 1,301 | -0.54% | 181,300 | 1402億9001万 | +1.17% |
| 01/12 | 1,295 | 1,312 | 1,295 | 1,308 | +0.77% | 110,700 | 1410億4483万 | +1.71% |
| 01/11 | 1,295 | 1,301 | 1,291 | 1,298 | +0.85% | 66,300 | 1399億6651万 | +0.93% |
| 01/10 | 1,302 | 1,306 | 1,280 | 1,287 | -0.69% | 73,400 | 1387億8035万 | +0.08% |
| 01/06 | 1,284 | 1,304 | 1,283 | 1,296 | +1.01% | 131,100 | 1397億5084万 | +0.54% |
| 01/05 | 1,276 | 1,286 | 1,270 | 1,283 | +0.39% | 149,900 | 1383億4902万 | -0.54% |
| 01/04 | 1,257 | 1,287 | 1,233 | 1,278 | +1.51% | 183,400 | 1378億986万 | -1.24% |
| 2022 |
| 12/30 | 1,281 | 1,289 | 1,259 | 1,259 | -1.72% | 107,300 | 1357億6104万 | -3.08% |
| 12/29 | 1,260 | 1,284 | 1,243 | 1,281 | +1.83% | 158,900 | 1381億3336万 | -1.84% |
| 12/28 | 1,262 | 1,263 | 1,245 | 1,258 | -0.32% | 102,100 | 1356億5321万 | -4.04% |
| 12/27 | 1,278 | 1,279 | 1,262 | 1,262 | -1.41% | 81,200 | 1360億8454万 | -4.18% |
| 12/26 | 1,272 | 1,285 | 1,268 | 1,280 | +0.39% | 65,900 | 1380億2552万 | -3.25% |
| 12/23 | 1,263 | 1,277 | 1,256 | 1,275 | -0.08% | 113,500 | 1374億8636万 | -3.92% |
| 12/22 | 1,273 | 1,283 | 1,271 | 1,276 | +1.59% | 86,400 | 1375億9419万 | -4.13% |
| 12/21 | 1,274 | 1,280 | 1,252 | 1,256 | -0.79% | 101,700 | 1354億3755万 | -5.92% |
| 12/20 | 1,317 | 1,317 | 1,261 | 1,266 | -3.87% | 163,100 | 1365億1587万 | -5.52% |
| 12/19 | 1,288 | 1,318 | 1,287 | 1,317 | +1.23% | 180,700 | 1420億1533万 | -2.01% |
| 12/16 | 1,297 | 1,307 | 1,292 | 1,301 | -0.91% | 197,800 | 1402億9001万 | -3.41% |
| 12/15 | 1,308 | 1,318 | 1,301 | 1,313 | +0.15% | 73,500 | 1415億8400万 | -2.67% |
| 12/14 | 1,316 | 1,316 | 1,302 | 1,311 | 0% | 79,400 | 1413億6833万 | -2.96% |
| 12/13 | 1,316 | 1,322 | 1,308 | 1,311 | +1.47% | 102,200 | 1413億6833万 | -3.18% |
| 12/12 | 1,288 | 1,302 | 1,285 | 1,292 | -0.39% | 82,300 | 1393億1951万 | -4.72% |
| 12/09 | 1,287 | 1,302 | 1,285 | 1,297 | +1.89% | 111,900 | 1398億5868万 | -4.49% |
| 12/08 | 1,284 | 1,285 | 1,264 | 1,273 | -0.78% | 170,500 | 1372億7070万 | -6.53% |
| 12/07 | 1,283 | 1,290 | 1,271 | 1,283 | -1% | 153,700 | 1383億4902万 | -6.08% |
| 12/06 | 1,290 | 1,297 | 1,285 | 1,296 | -0.15% | 126,900 | 1397億5084万 | -5.4% |
| 12/05 | 1,305 | 1,310 | 1,288 | 1,298 | -0.46% | 118,800 | 1399億6651万 | -5.39% |
| 12/02 | 1,339 | 1,339 | 1,303 | 1,304 | -3.34% | 153,500 | 1406億1350万 | -5.16% |
| 12/01 | 1,356 | 1,359 | 1,341 | 1,349 | +0.6% | 126,200 | 1454億6596万 | -2.03% |
