| 2023 |
| 06/08 | （IR情報）15:00 当社株式の上場廃止のお知らせ |
| 06/08 | 4,450 | 4,450 | 4,450 | 4,450 | 0% | 8,400 | 348億767万 | 0% |
| 06/07 | 4,450 | 4,450 | 4,450 | 4,450 | 0% | 2,700 | 348億767万 | 0% |
| 06/06 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 12,600 | 348億767万 | 0% |
| 06/05 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 6,400 | 348億767万 | 0% |
| 06/02 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 5,200 | 348億767万 | 0% |
| 06/01 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 13,900 | 348億767万 | -0.02% |
| 05/31 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 3,500 | 348億767万 | -0.02% |
| 05/30 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 19,200 | 348億767万 | -0.02% |
| 05/29 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 4,200 | 348億767万 | -0.02% |
| 05/26 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 5,400 | 348億767万 | -0.04% |
| 05/25 | 4,450 | 4,450 | 4,450 | 4,450 | 0% | 15,100 | 348億767万 | -0.04% |
| 05/24 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 21,000 | 348億767万 | -0.04% |
| 05/23 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 29,600 | 348億767万 | -0.04% |
| 05/22 | （IR情報）15:00 株式併合並びに単元株式数の定めの廃止及び定款の一部変更の承認決議に関するお知らせ |
| 05/22 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 2,100 | 348億767万 | -0.04% |
| 05/19 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 1,700 | 348億767万 | -0.04% |
| 05/18 | 4,455 | 4,455 | 4,450 | 4,450 | 0% | 2,000 | 348億767万 | -0.07% |
| 05/17 | 4,455 | 4,455 | 4,450 | 4,450 | 0% | 9,400 | 348億767万 | -0.07% |
| 05/16 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 2,500 | 348億767万 | -0.07% |
| 05/15 | （IR情報）15:00 (訂正・数値データ訂正)「2023年3月期決算短信〔日本基準〕(連結)」の一部訂正について |
| 05/15 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 5,300 | 348億767万 | -0.07% |
| 05/12 | 4,455 | 4,455 | 4,450 | 4,450 | 0% | 6,700 | 348億767万 | -0.07% |
| 05/11 | （IR情報）15:00 2023年3月期決算補足説明資料 |
| 05/11 | （IR情報）15:00 2023年3月期決算短信〔日本基準〕(連結) |
| 05/11 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 800 | 348億767万 | -0.07% |
| 05/10 | 4,450 | 4,455 | 4,450 | 4,450 | -0.11% | 800 | 348億767万 | -0.09% |
| 05/09 | 4,450 | 4,455 | 4,450 | 4,455 | +0.11% | 4,300 | 348億4678万 | +0.02% |
| 05/08 | （IR情報）15:00 業績予想の修正に関するお知らせ |
| 05/08 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 7,900 | 348億767万 | -0.11% |
| 05/02 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 4,500 | 348億767万 | -0.16% |
| 05/01 | 4,450 | 4,455 | 4,450 | 4,450 | 0% | 39,700 | 348億767万 | -0.18% |
| 04/28 | 4,455 | 4,455 | 4,450 | 4,450 | 0% | 35,100 | 348億767万 | -0.18% |
| 04/27 | 4,455 | 4,475 | 4,450 | 4,450 | -0.11% | 171,200 | 348億767万 | -0.2% |
| 04/26 | 4,460 | 4,465 | 4,455 | 4,455 | -0.11% | 4,000 | 348億4678万 | -0.09% |
| 04/25 | 4,455 | 4,475 | 4,455 | 4,460 | +0.11% | 7,700 | 348億8589万 | +0.02% |
| 04/24 | 4,455 | 4,470 | 4,455 | 4,455 | 0% | 10,200 | 348億4678万 | -0.07% |
| 04/21 | 4,460 | 4,460 | 4,455 | 4,455 | 0% | 3,400 | 348億4678万 | -0.07% |
| 04/20 | 4,455 | 4,460 | 4,455 | 4,455 | 0% | 3,000 | 348億4678万 | -0.07% |
| 04/19 | 4,455 | 4,460 | 4,455 | 4,455 | 0% | 4,500 | 348億4678万 | -0.07% |
| 04/18 | 4,460 | 4,465 | 4,455 | 4,455 | 0% | 5,200 | 348億4678万 | -0.04% |
| 04/17 | （IR情報）15:00 自己株式の消却に関するお知らせ |
| 04/17 | （IR情報）15:00 株式併合並びに単元株式数の定めの廃止及び定款の一部変更に関する臨時株主総会開催のお知らせ |
| 04/17 | 4,455 | 4,460 | 4,455 | 4,455 | 0% | 4,300 | 348億4678万 | -0.04% |
| 04/14 | 4,455 | 4,470 | 4,455 | 4,455 | 0% | 8,200 | 348億4678万 | -0.04% |
| 04/13 | 4,455 | 4,455 | 4,450 | 4,455 | +0.11% | 2,400 | 348億4678万 | -0.02% |
| 04/12 | 4,455 | 4,460 | 4,450 | 4,450 | -0.11% | 5,900 | 348億767万 | -0.13% |
| 04/11 | 4,450 | 4,460 | 4,450 | 4,455 | +0.11% | 9,700 | 348億4678万 | -0.02% |
| 04/10 | 4,455 | 4,460 | 4,450 | 4,450 | 0% | 10,800 | 348億767万 | -0.11% |
| 04/07 | （5%ルール）みずほ銀行（0%）みずほ証券（0.03%）みずほ信託銀行（0.83%）アセットマネジメントOne（0.37%） |
| 04/07 | 4,450 | 4,455 | 4,450 | 4,450 | -0.11% | 11,700 | 348億767万 | -0.11% |
| 04/06 | 4,455 | 4,460 | 4,455 | 4,455 | 0% | 5,400 | 348億4678万 | 0% |
| 04/05 | 4,465 | 4,465 | 4,455 | 4,455 | -0.11% | 3,600 | 348億4678万 | 0% |
| 04/04 | 4,460 | 4,465 | 4,455 | 4,460 | 0% | 4,800 | 348億8589万 | +0.13% |
| 04/03 | 4,465 | 4,480 | 4,455 | 4,460 | -0.11% | 18,400 | 348億8589万 | +0.13% |
| 03/31 | 4,460 | 4,465 | 4,455 | 4,465 | +0.11% | 9,400 | 349億2500万 | +0.27% |
| 03/30 | （5%ルール）Be Brave（0%） |
| 03/30 | 4,460 | 4,490 | 4,455 | 4,460 | -1.22% | 14,200 | 348億8589万 | +0.18% |
| 03/29 | 4,460 | 4,515 | 4,455 | 4,515 | +1.01% | 15,000 | 353億1610万 | +1.42% |
| 03/28 | （5%ルール）コスモ HD（82.88%） |
| 03/28 | （5%ルール）コスモ HD（82.88%） |
| 03/28 | 4,455 | 4,475 | 4,450 | 4,470 | +0.22% | 17,500 | 349億6411万 | +0.47% |
| 03/27 | （IR情報）16:00 臨時株主総会のための基準日設定に関するお知らせ |
| 03/27 | 4,465 | 4,465 | 4,450 | 4,460 | 0% | 20,500 | 348億8589万 | +0.27% |
| 03/24 | 4,460 | 4,465 | 4,455 | 4,460 | 0% | 11,600 | 348億8589万 | +0.29% |
| 03/23 | （IR情報）13:00 コスモホールディングス株式会社による当社株式に対する公開買付けの結果並びに親会社及び主要株主である筆頭株主の異動に関するお知らせ |
| 03/23 | 4,450 | 4,460 | 4,450 | 4,460 | +0.22% | 9,900 | 348億8589万 | +0.29% |
| 03/22 | 4,450 | 4,460 | 4,450 | 4,450 | +0.11% | 12,000 | 348億767万 | +0.09% |
| 03/20 | 4,445 | 4,460 | 4,445 | 4,445 | 0% | 20,000 | 347億6856万 | -0.02% |
| 03/17 | 4,450 | 4,485 | 4,445 | 4,445 | -0.22% | 15,700 | 347億6856万 | -0.02% |
| 03/16 | 4,445 | 4,455 | 4,435 | 4,455 | +0.22% | 129,100 | 348億4678万 | +0.2% |
| 03/15 | 4,445 | 4,455 | 4,445 | 4,445 | 0% | 148,000 | 347億6856万 | +0.93% |
| 03/14 | 4,445 | 4,450 | 4,445 | 4,445 | -0.11% | 115,800 | 347億6856万 | +2.37% |
| 03/13 | 4,445 | 4,450 | 4,445 | 4,450 | +0.11% | 28,500 | 348億767万 | +4.46% |
| 03/10 | （5%ルール）UGSアセットマネジメント（4.15%） |
| 03/10 | 4,450 | 4,450 | 4,445 | 4,445 | 0% | 60,900 | 347億6856万 | +6.37% |
| 03/09 | 4,450 | 4,450 | 4,445 | 4,445 | 0% | 49,000 | 347億6856万 | +8.44% |
| 03/08 | 4,450 | 4,450 | 4,445 | 4,445 | 0% | 26,500 | 347億6856万 | +10.65% |
| 03/07 | 4,450 | 4,450 | 4,445 | 4,445 | -0.11% | 11,100 | 347億6856万 | +12.99% |
| 03/06 | 4,445 | 4,450 | 4,445 | 4,450 | +0.11% | 25,700 | 348億767万 | +15.55% |
| 03/03 | 4,445 | 4,455 | 4,445 | 4,445 | 0% | 156,100 | 347億6856万 | +17.94% |
| 03/02 | 4,445 | 4,455 | 4,445 | 4,445 | 0% | 141,700 | 347億6856万 | +20.53% |
| 03/01 | 4,445 | 4,450 | 4,445 | 4,445 | 0% | 19,800 | 347億6856万 | +23.23% |
| 02/28 | 4,445 | 4,450 | 4,445 | 4,445 | 0% | 38,200 | 347億6856万 | +26.1% |
| 02/27 | （IR情報）16:00 役員の選任に関するお知らせ |
| 02/27 | 4,450 | 4,450 | 4,445 | 4,445 | 0% | 31,400 | 347億6856万 | +29.18% |
| 02/24 | 4,445 | 4,450 | 4,445 | 4,445 | 0% | 115,400 | 347億6856万 | +32.49% |
| 02/22 | （5%ルール）みずほ証券（1.41%）みずほ信託銀行（0.83%）アセットマネジメントOne（1.51%）みずほ銀行（2.35%） |
| 02/22 | 4,445 | 4,450 | 4,445 | 4,445 | 0% | 55,700 | 347億6856万 | +36.02% |
| 02/21 | （IR情報）15:00 (訂正)コスモホールディングス株式会社による公開買付届出書の訂正届出書の提出に伴う公開買付開始公告の訂正に関するお知らせ |
| 02/21 | 4,445 | 4,445 | 4,445 | 4,445 | 0% | 22,400 | 347億6856万 | +39.65% |
| 02/20 | 4,450 | 4,450 | 4,445 | 4,445 | -0.11% | 49,300 | 347億6856万 | +43.57% |
| 02/17 | 4,445 | 4,450 | 4,445 | 4,450 | +0.11% | 63,400 | 348億767万 | +47.89% |
| 02/16 | 4,445 | 4,450 | 4,445 | 4,445 | 0% | 26,500 | 347億6856万 | +52.12% |
| 02/15 | 4,445 | 4,450 | 4,445 | 4,445 | 0% | 41,500 | 347億6856万 | +56.73% |
| 02/14 | 4,445 | 4,450 | 4,445 | 4,445 | 0% | 139,100 | 347億6856万 | +61.7% |
| 02/13 | 4,445 | 4,450 | 4,445 | 4,445 | 0% | 196,700 | 347億6856万 | +66.98% |
| 02/10 | 4,450 | 4,450 | 4,445 | 4,445 | -0.11% | 391,600 | 347億6856万 | +72.62% |
| 02/09 | 4,450 | 4,455 | 4,450 | 4,450 | +30.88% | 455,500 | 348億767万 | +78.86% |
| 02/08 | 3,400 | 3,400 | 3,400 | 3,400 | +17.4% | 8,100 | 265億9463万 | +41.67% |
| 02/07 | 2,896 | 2,896 | 2,896 | 2,896 | +20.87% | 2,200 | 226億5236万 | +22.97% |
| 02/06 | （IR情報）15:30 MBOの実施及び応募の推奨に関するお知らせ |
| 02/06 | （IR情報）15:30 2023年3月期配当予想の修正(無配)に関するお知らせ |
| 02/06 | （IR情報）15:30 上場維持基準の適合に向けた計画に基づく進捗状況について |
| 02/06 | （IR情報）15:30 コスモホールディングス株式会社による岩崎電気株式会社(証券コード:6924)の普通株式に対する公開買付けの開始に関するお知らせ |
| 02/06 | （IR情報）15:30 2023年3月期第3四半期決算短信〔日本基準〕(連結) |
| 02/06 | 2,432 | 2,432 | 2,324 | 2,396 | -1.48% | 10,400 | 187億4139万 | +2.79% |
| 02/03 | 2,425 | 2,432 | 2,393 | 2,432 | +0.29% | 11,600 | 190億2298万 | +4.56% |
| 02/02 | 2,395 | 2,432 | 2,387 | 2,425 | +1.25% | 9,700 | 189億6822万 | +4.48% |
| 02/01 | 2,379 | 2,395 | 2,379 | 2,395 | +0.25% | 3,300 | 187億3357万 | +3.41% |
| 01/31 | 2,356 | 2,393 | 2,356 | 2,389 | +1.23% | 7,600 | 186億8663万 | +3.29% |
| 01/30 | 2,385 | 2,394 | 2,355 | 2,360 | -1.42% | 19,400 | 184億5980万 | +2.16% |
| 01/27 | 2,431 | 2,431 | 2,391 | 2,394 | -1.52% | 10,200 | 187億2574万 | +3.82% |
| 01/26 | 2,418 | 2,431 | 2,404 | 2,431 | +0.54% | 8,200 | 190億1516万 | +5.56% |
| 01/25 | 2,404 | 2,420 | 2,381 | 2,418 | +0.79% | 11,300 | 189億1347万 | +5.13% |
| 01/24 | 2,348 | 2,423 | 2,340 | 2,399 | +2.61% | 16,400 | 187億6485万 | +4.4% |
| 01/23 | 2,321 | 2,338 | 2,302 | 2,338 | +2.05% | 6,900 | 182億8771万 | +1.65% |
| 01/20 | 2,281 | 2,299 | 2,278 | 2,291 | +0.22% | 3,500 | 179億2008万 | -0.56% |
| 01/19 | 2,308 | 2,310 | 2,286 | 2,286 | -0.95% | 7,400 | 178億8097万 | -1.08% |
| 01/18 | 2,293 | 2,310 | 2,277 | 2,308 | +1.5% | 7,200 | 180億5306万 | -0.35% |
| 01/17 | 2,272 | 2,279 | 2,271 | 2,274 | -0.04% | 3,800 | 177億8711万 | -1.98% |
| 01/16 | 2,287 | 2,287 | 2,261 | 2,275 | +0.18% | 13,700 | 177億9493万 | -2.11% |
| 01/13 | 2,273 | 2,282 | 2,263 | 2,271 | -0.83% | 14,000 | 177億6364万 | -2.45% |
