| 2024 |
| 03/07 | 1,743 | 1,870 | 1,727 | 1,857 | +10.08% | 586,200 | 501億3000万 | +19.02% |
| 03/06 | 1,572 | 1,707 | 1,568 | 1,687 | +5.75% | 286,200 | 455億4000万 | +8.54% |
| 03/05 | 1,540 | 1,595 | 1,523 | 1,595 | +2.35% | 103,800 | 430億6500万 | +2.64% |
| 03/04 | 1,525 | 1,558 | 1,522 | 1,558 | +2.19% | 102,900 | 420億7500万 | -0.04% |
| 03/01 | 1,508 | 1,525 | 1,485 | 1,525 | +2.01% | 76,200 | 411億7500万 | -2.68% |
| 02/29 | 1,497 | 1,507 | 1,470 | 1,495 | -0.11% | 86,400 | 403億6500万 | -5.08% |
| 02/28 | 15:30 (訂正)「2023年12月期決算説明資料」の一部訂正について |
| 02/28 | 1,463 | 1,515 | 1,460 | 1,497 | +2.28% | 80,100 | 404億1000万 | -5.39% |
| 02/27 | 1,480 | 1,480 | 1,457 | 1,463 | -1.24% | 54,900 | 395億1000万 | -7.97% |
| 02/26 | 1,483 | 1,493 | 1,462 | 1,482 | +2.18% | 132,900 | 400億500万 | -7.34% |
| 02/22 | 16:50 譲渡制限付株式報酬制度の導入に関するお知らせ |
| 02/22 | 16:50 役員候補者の決定に関するお知らせ |
| 02/22 | 16:50 剰余金の配当に関するお知らせ |
| 02/22 | 1,428 | 1,478 | 1,425 | 1,450 | +2.72% | 186,900 | 391億5000万 | -9.77% |
| 02/21 | 1,430 | 1,442 | 1,412 | 1,412 | -1.63% | 112,800 | 381億1500万 | -12.59% |
| 02/20 | 1,457 | 1,463 | 1,423 | 1,435 | -1.15% | 109,200 | 387億4500万 | -11.69% |
| 02/19 | 1,435 | 1,462 | 1,422 | 1,452 | +0.93% | 107,400 | 391億9500万 | -11.16% |
| 02/16 | 1,433 | 1,453 | 1,420 | 1,438 | +0.35% | 186,600 | 388億3500万 | -12.35% |
| 02/15 | 1,472 | 1,478 | 1,430 | 1,433 | -2.6% | 205,800 | 387億 | -13.03% |
| 02/14 | 1,503 | 1,508 | 1,472 | 1,472 | -2.43% | 186,900 | 397億3500万 | -11.08% |
| 02/13 | 1,530 | 1,545 | 1,500 | 1,508 | -0.77% | 136,500 | 407億2500万 | -9.19% |
| 02/09 | 1,530 | 1,563 | 1,463 | 1,520 | -6.56% | 687,300 | 410億4000万 | -8.71% |
| 02/08 | 15:00 株式分割及び定款一部変更、ならびに2024年12月期配当予想に関するお知らせ |
| 02/08 | 15:00 2023年12月期連結業績の概要 |
| 02/08 | 15:00 2023年12月期決算説明資料(機関投資家・アナリスト向け) |
| 02/08 | 15:00 2023年12月期決算短信〔日本基準〕(連結) |
| 02/08 | 1,630 | 1,635 | 1,592 | 1,627 | -1.31% | 190,800 | 439億2000万 | -2.54% |
| 02/07 | 1,655 | 1,673 | 1,623 | 1,648 | -0.9% | 132,900 | 445億500万 | -1.3% |
| 02/06 | 1,667 | 1,677 | 1,650 | 1,663 | -0.2% | 49,800 | 449億1000万 | -0.46% |
| 02/05 | 1,663 | 1,673 | 1,650 | 1,667 | +0.3% | 49,800 | 450億 | -0.2% |
| 02/02 | 1,730 | 1,730 | 1,662 | 1,662 | -3.95% | 99,000 | 448億6500万 | -0.38% |
| 02/01 | 1,710 | 1,730 | 1,693 | 1,730 | +0.97% | 43,500 | 467億1000万 | +3.84% |
| 01/31 | 1,713 | 1,737 | 1,687 | 1,713 | 0% | 42,600 | 462億6000万 | +3.09% |
| 01/30 | 1,703 | 1,733 | 1,693 | 1,713 | +1.78% | 46,800 | 462億6000万 | +3.28% |
| 01/29 | 1,707 | 1,707 | 1,680 | 1,683 | -1.94% | 68,400 | 454億5000万 | +1.59% |
| 01/26 | 1,777 | 1,777 | 1,713 | 1,717 | -3.56% | 90,600 | 463億5000万 | +3.66% |
| 01/25 | 1,713 | 1,793 | 1,713 | 1,780 | +4.3% | 171,000 | 480億6000万 | +7.75% |
| 01/24 | 1,697 | 1,733 | 1,680 | 1,707 | +1.99% | 92,700 | 460億8000万 | +3.75% |
| 01/23 | 1,707 | 1,717 | 1,670 | 1,673 | -1.76% | 65,100 | 451億8000万 | +1.97% |
| 01/22 | 1,723 | 1,727 | 1,693 | 1,703 | +1.59% | 68,400 | 459億9000万 | +3.93% |
| 01/19 | 1,693 | 1,703 | 1,650 | 1,677 | -0.4% | 90,300 | 452億7000万 | +2.49% |
| 01/18 | 1,640 | 1,683 | 1,637 | 1,683 | +2.23% | 94,800 | 454億5000万 | +3.02% |
| 01/17 | 1,667 | 1,687 | 1,637 | 1,647 | -0.9% | 125,400 | 444億6000万 | +0.96% |
| 01/16 | 1,667 | 1,667 | 1,622 | 1,662 | -0.3% | 75,900 | 448億6500万 | +2.01% |
| 01/15 | 1,620 | 1,670 | 1,618 | 1,667 | +2.46% | 88,200 | 450億 | +2.38% |
| 01/12 | 1,617 | 1,635 | 1,602 | 1,627 | +0.93% | 83,100 | 439億2000万 | -0.02% |
| 01/11 | 1,613 | 1,622 | 1,593 | 1,612 | +0.31% | 94,800 | 435億1500万 | -1.06% |
| 01/10 | 1,627 | 1,627 | 1,607 | 1,607 | -1.33% | 67,200 | 433億8000万 | -1.61% |
| 01/09 | 1,617 | 1,630 | 1,607 | 1,628 | +1.77% | 39,600 | 439億6500万 | -0.65% |
| 01/05 | 1,633 | 1,648 | 1,600 | 1,600 | -2.04% | 82,500 | 432億 | -2.68% |
| 01/04 | 1,645 | 1,658 | 1,622 | 1,633 | -1.41% | 34,800 | 441億 | -0.95% |
| 2023 |
| 12/29 | 1,673 | 1,673 | 1,650 | 1,657 | -1% | 32,700 | 447億3000万 | +0.22% |
| 12/28 | 1,637 | 1,680 | 1,608 | 1,673 | +3.08% | 100,500 | 451億8000万 | +1.11% |
| 12/27 | 1,620 | 1,657 | 1,620 | 1,623 | -0.61% | 94,200 | 438億3000万 | -1.85% |
| 12/26 | 1,615 | 1,645 | 1,603 | 1,633 | +1.87% | 83,400 | 441億 | -1.37% |
| 12/25 | 1,632 | 1,642 | 1,600 | 1,603 | -1.74% | 70,800 | 432億9000万 | -3.06% |
| 12/22 | 1,633 | 1,655 | 1,627 | 1,632 | -0.51% | 50,700 | 440億5500万 | -1.29% |
| 12/21 | 1,640 | 1,655 | 1,637 | 1,640 | -0.91% | 41,100 | 442億8000万 | -0.79% |
| 12/20 | 1,690 | 1,700 | 1,653 | 1,655 | -0.7% | 93,600 | 446億8500万 | +0.24% |
| 12/19 | 1,613 | 1,667 | 1,612 | 1,667 | +3.31% | 110,100 | 450億 | +1.07% |
| 12/18 | 1,583 | 1,617 | 1,583 | 1,613 | +0.21% | 102,900 | 435億6000万 | -1.87% |
| 12/15 | 1,582 | 1,628 | 1,582 | 1,610 | +0.84% | 62,100 | 434億7000万 | -1.95% |
| 12/14 | 1,620 | 1,638 | 1,577 | 1,597 | -1.64% | 86,400 | 431億1000万 | -2.88% |
| 12/13 | 1,623 | 1,657 | 1,620 | 1,623 | 0% | 62,100 | 438億3000万 | -1.38% |
| 12/12 | 1,643 | 1,647 | 1,620 | 1,623 | -0.92% | 66,300 | 438億3000万 | -1.44% |
| 12/11 | 1,615 | 1,642 | 1,615 | 1,638 | +2.4% | 37,500 | 442億3500万 | -0.59% |
| 12/08 | 1,585 | 1,622 | 1,557 | 1,600 | -0.41% | 168,300 | 432億 | -2.91% |
| 12/07 | 1,630 | 1,632 | 1,593 | 1,607 | -1.93% | 109,500 | 433億8000万 | -2.51% |
| 12/06 | 1,630 | 1,648 | 1,630 | 1,638 | +0.31% | 59,100 | 442億3500万 | -0.59% |
| 12/05 | 1,690 | 1,690 | 1,623 | 1,633 | -3.35% | 142,800 | 441億 | -0.83% |
| 12/04 | 1,683 | 1,710 | 1,662 | 1,690 | -0.78% | 96,600 | 456億3000万 | +2.67% |
| 12/01 | 1,747 | 1,760 | 1,683 | 1,703 | -2.48% | 82,500 | 459億9000万 | +3.61% |
| 11/30 | 17:00 (訂正)「2023年12月期第3四半期決算説明資料」の一部訂正について |
| 11/30 | 1,783 | 1,823 | 1,737 | 1,747 | -1.13% | 159,600 | 471億6000万 | +6.44% |
| 11/29 | 1,710 | 1,790 | 1,710 | 1,767 | +3.11% | 120,600 | 477億 | +7.92% |
| 11/28 | 1,723 | 1,723 | 1,677 | 1,713 | -1.15% | 90,600 | 462億6000万 | +5.05% |
| 11/27 | 1,740 | 1,747 | 1,717 | 1,733 | +0.97% | 87,900 | 468億 | +6.47% |
| 11/24 | 1,650 | 1,737 | 1,650 | 1,717 | +4.36% | 138,300 | 463億5000万 | +5.51% |
| 11/22 | 1,658 | 1,667 | 1,628 | 1,645 | -2.08% | 95,400 | 444億1500万 | +1.11% |
| 11/21 | 1,593 | 1,680 | 1,583 | 1,680 | +5.88% | 104,400 | 453億6000万 | +3% |
| 11/20 | 1,593 | 1,617 | 1,568 | 1,587 | +0.53% | 78,300 | 428億4000万 | -2.84% |
| 11/17 | 1,610 | 1,610 | 1,572 | 1,578 | -1.87% | 63,000 | 426億1500万 | -3.82% |
| 11/16 | 1,607 | 1,623 | 1,580 | 1,608 | -0.1% | 60,300 | 434億2500万 | -2.58% |
| 11/15 | 1,618 | 1,633 | 1,595 | 1,610 | +0.94% | 67,200 | 434億7000万 | -2.9% |
| 11/14 | 1,547 | 1,612 | 1,547 | 1,595 | +3.68% | 91,800 | 430億6500万 | -4.26% |
| 11/13 | 15:00 次世代光海底中継器の実用化に向けて4コアファイバ用光アイソレータを開発 |
| 11/13 | 1,573 | 1,575 | 1,530 | 1,538 | -2.02% | 140,700 | 415億3500万 | -8.16% |
| 11/10 | 1,627 | 1,627 | 1,533 | 1,570 | -5.42% | 188,100 | 423億9000万 | -6.82% |
| 11/09 | 15:00 2023年12月期第3四半期連結業績の概要 |
| 11/09 | 15:00 2023年12月期第3四半期決算説明資料 |
| 11/09 | 15:00 2023年12月期第3四半期決算短信〔日本基準〕(連結) |
| 11/09 | 1,648 | 1,683 | 1,630 | 1,660 | +0.4% | 135,000 | 448億2000万 | -1.89% |
| 11/08 | 1,660 | 1,673 | 1,638 | 1,653 | +0.92% | 59,700 | 446億4000万 | -2.57% |
| 11/07 | 1,667 | 1,667 | 1,612 | 1,638 | -1.21% | 53,700 | 442億3500万 | -3.97% |
| 11/06 | 1,658 | 1,697 | 1,653 | 1,658 | +1.74% | 90,000 | 447億7500万 | -3.36% |
| 11/02 | 1,610 | 1,648 | 1,607 | 1,630 | +1.35% | 48,900 | 440億1000万 | -5.56% |
| 11/01 | 1,620 | 1,620 | 1,593 | 1,608 | +1.15% | 37,200 | 434億2500万 | -7.51% |
| 10/31 | 1,617 | 1,617 | 1,585 | 1,590 | -1.24% | 60,600 | 429億3000万 | -9.3% |
| 10/30 | 1,642 | 1,650 | 1,610 | 1,610 | -1.23% | 45,000 | 434億7000万 | -8.99% |
| 10/27 | 1,613 | 1,650 | 1,613 | 1,630 | +0.51% | 46,200 | 440億1000万 | -8.63% |
| 10/26 | 1,645 | 1,645 | 1,605 | 1,622 | -1.52% | 42,600 | 437億8500万 | -9.91% |
| 10/25 | 1,655 | 1,670 | 1,638 | 1,647 | +0.92% | 48,900 | 444億6000万 | -9.27% |
| 10/24 | 16:45 人事異動に関するお知らせ |
| 10/24 | 1,617 | 1,650 | 1,583 | 1,632 | +0.93% | 115,200 | 440億5500万 | -10.79% |
| 10/23 | 1,647 | 1,647 | 1,617 | 1,617 | -2.22% | 93,000 | 436億5000万 | -12.38% |
| 10/20 | 1,677 | 1,680 | 1,648 | 1,653 | -2.36% | 111,000 | 446億4000万 | -11.25% |
| 10/19 | 1,710 | 1,727 | 1,683 | 1,693 | -2.12% | 62,400 | 457億2000万 | -9.88% |
| 10/18 | 1,710 | 1,737 | 1,690 | 1,730 | +0.19% | 30,000 | 467億1000万 | -8.61% |
| 10/17 | 1,747 | 1,767 | 1,713 | 1,727 | -0.77% | 110,100 | 466億2000万 | -9.27% |
| 10/16 | 1,783 | 1,783 | 1,733 | 1,740 | -2.25% | 51,300 | 469億8000万 | -9.14% |
| 10/13 | 1,830 | 1,830 | 1,780 | 1,780 | -2.55% | 32,700 | 480億6000万 | -7.48% |
| 10/12 | 1,783 | 1,830 | 1,783 | 1,827 | +1.67% | 39,900 | 493億2000万 | -5.5% |
| 10/11 | 1,810 | 1,817 | 1,780 | 1,797 | -0.74% | 51,300 | 485億1000万 | -7.48% |
| 10/10 | 1,823 | 1,847 | 1,793 | 1,810 | -0.55% | 48,900 | 488億7000万 | -7.27% |
