| 2026 |
| 08/21 | 441 | 450 | 441 | 446 | +1.13% | 3,100 | 28億9810万 | +0.45% |
| 08/20 | 441 | 451 | 440 | 441 | 0% | 14,700 | 28億6561万 | -0.68% |
| 08/19 | 443 | 445 | 441 | 441 | -0.45% | 1,500 | 28億6561万 | -0.68% |
| 08/18 | 445 | 448 | 440 | 443 | 0% | 4,600 | 28億7861万 | -0.23% |
| 08/17 | 442 | 448 | 442 | 443 | -0.45% | 2,400 | 28億7861万 | 0% |
| 08/14 | 440 | 445 | 439 | 445 | +0.91% | 2,200 | 28億9161万 | +0.45% |
| 08/13 | 440 | 448 | 440 | 441 | +0.23% | 2,400 | 28億6561万 | -0.45% |
| 08/12 | 439 | 442 | 439 | 440 | +0.23% | 1,200 | 28億5912万 | -0.45% |
| 08/10 | 440 | 447 | 437 | 439 | -0.23% | 2,700 | 28億5262万 | -0.68% |
| 08/07 | 447 | 447 | 439 | 440 | -1.57% | 4,000 | 28億5912万 | -0.45% |
| 08/06 | 445 | 448 | 440 | 447 | +0.45% | 3,000 | 29億460万 | +1.13% |
| 08/05 | 445 | 465 | 444 | 445 | -2.63% | 10,500 | 28億9161万 | +0.68% |
| 08/04 | 475 | 475 | 457 | 457 | +0.66% | 2,700 | 29億6958万 | +3.63% |
| 08/03 | 448 | 458 | 445 | 454 | +0.44% | 5,700 | 29億5009万 | +3.42% |
| 07/31 | 452 | 474 | 450 | 452 | +0.67% | 6,300 | 29億3709万 | +3.2% |
| 07/30 | 451 | 453 | 449 | 449 | 0% | 2,300 | 29億1760万 | +2.98% |
| 07/29 | 450 | 453 | 449 | 449 | -0.22% | 2,400 | 29億1760万 | +3.46% |
| 07/28 | 451 | 454 | 450 | 450 | -0.22% | 1,400 | 29億2410万 | +3.93% |
| 07/27 | 470 | 470 | 450 | 451 | +0.89% | 15,500 | 29億3059万 | +4.16% |
| 07/24 | 439 | 447 | 438 | 447 | +2.05% | 2,000 | 29億460万 | +3.47% |
| 07/23 | 437 | 440 | 431 | 438 | +0.69% | 2,300 | 28億4612万 | +1.62% |
| 07/22 | 439 | 439 | 435 | 435 | 0% | 1,500 | 28億2663万 | +0.93% |
| 07/21 | (IR情報)10:00 システム ディ、『規程管理システム』にて「AIオプション機能」を提供開始 |
| 07/21 | 435 | 442 | 435 | 435 | +0.46% | 800 | 28億2663万 | +0.69% |
| 07/17 | 439 | 446 | 432 | 433 | -1.37% | 5,000 | 28億1363万 | 0% |
| 07/16 | 444 | 444 | 439 | 439 | -1.13% | 1,400 | 28億5262万 | +0.92% |
| 07/15 | 440 | 444 | 439 | 444 | +0.91% | 300 | 28億8511万 | +1.83% |
| 07/14 | 436 | 440 | 434 | 440 | +0.92% | 2,500 | 28億5912万 | +0.92% |
| 07/13 | (IR情報)10:00 システム ディ、サッポロビール博物館に『Smart Hello チケット』を導入 |
| 07/13 | 434 | 437 | 433 | 436 | +0.46% | 800 | 28億3312万 | 0% |
| 07/10 | 442 | 442 | 434 | 434 | -1.81% | 300 | 28億2013万 | -0.69% |
| 07/09 | 438 | 442 | 435 | 442 | +1.61% | 2,400 | 28億7211万 | +1.14% |
| 07/08 | (IR情報)10:00 システム ディ、UCCコーヒー博物館に『Smart Hello チケット』を導入 |
| 07/08 | 431 | 439 | 431 | 435 | +0.93% | 2,500 | 28億2663万 | -0.68% |
| 07/07 | 430 | 439 | 430 | 431 | -0.46% | 1,000 | 28億63万 | -1.82% |
| 07/06 | 447 | 447 | 433 | 433 | -1.59% | 600 | 28億1363万 | -1.59% |
| 07/03 | 443 | 443 | 432 | 440 | +1.15% | 1,000 | 28億5912万 | -0.45% |
| 07/02 | 434 | 442 | 434 | 435 | +0.23% | 3,700 | 28億2663万 | -1.81% |
| 07/01 | 428 | 441 | 428 | 434 | +1.88% | 3,500 | 28億2013万 | -2.47% |
| 06/30 | 408 | 429 | 408 | 426 | +3.4% | 4,800 | 27億6814万 | -4.7% |
| 06/29 | 419 | 419 | 407 | 412 | -1.67% | 6,600 | 26億7717万 | -8.44% |
| 06/26 | 426 | 427 | 410 | 419 | +2.2% | 9,600 | 27億2266万 | -7.71% |
| 06/25 | 410 | 411 | 408 | 410 | +0.24% | 6,000 | 26億6418万 | -10.28% |
| 06/24 | 422 | 422 | 408 | 409 | -4.22% | 9,600 | 26億5768万 | -11.28% |
| 06/23 | 430 | 431 | 418 | 427 | -0.7% | 2,800 | 27億7464万 | -8.17% |
| 06/22 | 426 | 431 | 420 | 430 | +0.23% | 6,200 | 27億9414万 | -7.73% |
| 06/19 | 428 | 432 | 425 | 429 | 0% | 3,200 | 27億8764万 | -8.33% |
| 06/18 | 435 | 437 | 426 | 429 | -0.92% | 2,400 | 27億8764万 | -8.72% |
| 06/17 | 438 | 439 | 423 | 433 | -4.63% | 10,400 | 28億1363万 | -8.26% |
| 06/16 | 459 | 459 | 439 | 454 | -6% | 10,000 | 29億5009万 | -4.02% |
| 06/15 | (IR情報)15:30 2026年10月期第2四半期(中間期)決算短信〔日本基準〕(連結) |
| 06/15 | 469 | 483 | 463 | 483 | +2.99% | 11,600 | 31億3853万 | +1.68% |
| 06/12 | 458 | 469 | 451 | 469 | +2.63% | 6,500 | 30億4756万 | -1.47% |
| 06/11 | 451 | 457 | 450 | 457 | +1.56% | 1,000 | 29億6958万 | -4.39% |
| 06/10 | 450 | 452 | 450 | 450 | 0% | 1,200 | 29億2410万 | -6.44% |
| 06/09 | 442 | 450 | 439 | 450 | +1.81% | 3,400 | 29億2410万 | -7.41% |
| 06/08 | 449 | 449 | 440 | 442 | -2.86% | 3,100 | 28億7211万 | -9.8% |
| 06/05 | 451 | 456 | 445 | 455 | -0.66% | 5,000 | 29億5659万 | -8.27% |
| 06/04 | 462 | 462 | 453 | 458 | -0.87% | 1,500 | 29億7608万 | -8.95% |
| 06/03 | 455 | 470 | 455 | 462 | +0.43% | 5,400 | 30億207万 | -9.06% |
| 06/02 | 465 | 466 | 455 | 460 | -3.16% | 6,800 | 29億8908万 | -10.33% |
| 06/01 | 466 | 475 | 466 | 475 | +1.93% | 3,500 | 30億8655万 | -8.3% |
| 05/29 | 477 | 482 | 466 | 466 | -2.1% | 4,000 | 30億2806万 | -10.73% |
| 05/28 | 492 | 492 | 476 | 476 | -3.84% | 2,300 | 30億9304万 | -9.51% |
| 05/27 | (IR情報)15:30 非上場の親会社等の決算に関するお知らせ |
| 05/27 | 497 | 497 | 487 | 495 | -1% | 700 | 32億1651万 | -6.6% |
| 05/26 | 511 | 511 | 497 | 500 | 0% | 5,100 | 32億4900万 | -6.37% |
| 05/25 | 509 | 509 | 495 | 500 | -0.6% | 3,300 | 32億4900万 | -7.06% |
| 05/22 | 513 | 513 | 492 | 503 | -1.95% | 5,400 | 32億6849万 | -7.02% |
| 05/21 | 512 | 513 | 501 | 513 | +2.81% | 2,300 | 33億3347万 | -5.87% |
| 05/20 | 479 | 499 | 469 | 499 | +6.4% | 3,600 | 32億4250万 | -8.94% |
| 05/19 | 479 | 480 | 466 | 469 | -0.42% | 9,700 | 30億4756万 | -15.04% |
| 05/18 | 473 | 478 | 466 | 471 | -0.42% | 3,000 | 30億6055万 | -15.29% |
| 05/15 | 476 | 478 | 472 | 473 | -1.05% | 4,400 | 30億7355万 | -15.54% |
| 05/14 | 486 | 486 | 478 | 478 | 0% | 3,400 | 31億604万 | -15.25% |
| 05/13 | 482 | 487 | 478 | 478 | -3.43% | 5,100 | 31億604万 | -15.7% |
| 05/12 | 504 | 505 | 495 | 495 | -1.79% | 5,200 | 32億1651万 | -13.16% |
| 05/11 | 510 | 521 | 504 | 504 | -3.08% | 5,400 | 32億7499万 | -11.89% |
| 05/08 | 538 | 544 | 520 | 520 | -4.24% | 4,900 | 33億7896万 | -9.25% |
| 05/07 | 555 | 555 | 531 | 543 | -2.16% | 5,700 | 35億2841万 | -5.57% |
| 05/01 | 558 | 579 | 552 | 555 | -1.07% | 2,800 | 36億639万 | -3.65% |
| 05/01 | 株式分割 1→3 |
| 04/30 | 569 | 573 | 552 | 561 | -6.34% | 4,000 | 36億4537万 | -2.94% |
| 04/28 | 640 | 642 | 563 | 599 | -3.39% | 7,800 | 38億9230万 | +3.99% |
| 04/27 | (IR情報)11:00 『fmSMART』事業譲受に関する基本合意書締結のお知らせ |
| 04/27 | (IR情報)10:00 システム ディ、大和大学にて学校事務トータルシステム『Campus Plan』AIチャットボットサービス実証実験を開始 |
| 04/27 | 617 | 631 | 598 | 620 | +6.16% | 18,900 | 120億8628万 | +8.2% |
| 04/24 | 571 | 599 | 571 | 584 | +0.63% | 13,200 | 113億8449万 | +2.82% |
| 04/23 | 582 | 583 | 580 | 580 | -0.34% | 1,500 | 113億1301万 | +2.53% |
| 04/22 | (IR情報)10:30 「東京スカイツリー(R)」にクラウド型チケット管理システム『Smart Hello チケット』を導入 |
| 04/22 | 582 | 582 | 582 | 582 | +1.51% | 300 | 113億5200万 | +3.43% |
| 04/21 | 575 | 578 | 574 | 574 | -0.75% | 1,500 | 111億8305万 | +2.44% |
| 04/20 | 583 | 583 | 577 | 578 | -0.91% | 2,400 | 112億6753万 | +3.4% |
| 04/17 | 586 | 595 | 571 | 583 | -0.51% | 3,000 | 113億7150万 | +4.73% |
| 04/16 | (IR情報)10:00 システム ディ、公会計システム『PPP』新バージョン6.0を提供開始 |
| 04/16 | 599 | 599 | 586 | 586 | -1.24% | 4,500 | 114億2998万 | +5.84% |
| 04/15 | 591 | 598 | 591 | 594 | +0.51% | 1,800 | 115億7293万 | +7.94% |
| 04/14 | 600 | 600 | 586 | 591 | -1.5% | 2,400 | 115億1445万 | +8.18% |
| 04/13 | 592 | 600 | 592 | 600 | +1.35% | 7,800 | 116億8990万 | +10.64% |
| 04/10 | 582 | 597 | 582 | 592 | +1.6% | 3,900 | 115億3395万 | +9.98% |
| 04/09 | 580 | 592 | 580 | 582 | +0.46% | 7,200 | 113億5200万 | +9.05% |
| 04/08 | 583 | 583 | 574 | 580 | +3.14% | 4,500 | 113億2万 | +8.96% |
| 04/07 | 563 | 563 | 562 | 562 | -1.81% | 2,100 | 109億5562万 | +6.24% |
| 04/06 | 570 | 574 | 556 | 572 | +2.81% | 3,900 | 111億5706万 | +8.4% |
| 04/03 | 573 | 573 | 557 | 557 | +1.46% | 2,400 | 108億5166万 | +5.63% |
| 04/02 | 546 | 552 | 546 | 549 | +0.8% | 4,200 | 106億9570万 | +4.31% |
| 04/01 | 547 | 549 | 538 | 544 | -0.43% | 2,700 | 106億1123万 | +3.68% |
| 03/31 | 554 | 563 | 547 | 547 | -2.67% | 10,800 | 106億5672万 | +4.33% |
| 03/30 | 576 | 576 | 562 | 562 | -2.49% | 6,900 | 109億4913万 | +7.6% |
| 03/27 | 570 | 593 | 567 | 576 | -3.46% | 22,800 | 112億2854万 | +10.77% |
| 03/25 | (IR情報)15:30 株式分割及び株式分割に伴う定款の一部変更ならびに配当予想の修正(増配)に関するお知らせ |