| 2026 |
| 01/20 | 3,750 | 3,835 | 3,750 | 3,750 | +0.4% | 209,500 | 2453億6178万 | -1.68% |
| 01/19 | 3,730 | 3,760 | 3,715 | 3,735 | +0.54% | 172,300 | 2443億8033万 | -2.1% |
| 01/16 | 3,780 | 3,805 | 3,680 | 3,715 | -3.51% | 373,200 | 2430億7173万 | -2.83% |
| 01/15 | 3,785 | 3,910 | 3,775 | 3,850 | +1.18% | 163,600 | 2519億476万 | +0.42% |
| 01/14 | 3,805 | 3,890 | 3,780 | 3,805 | -0.52% | 336,400 | 2489億6041万 | -0.89% |
| 01/14 | （空売り報告）Citigroup Global Markets Limited 397,894株（0.6%）+0.09% |
| 01/13 | 3,870 | 3,885 | 3,790 | 3,825 | -1.16% | 360,300 | 2502億6901万 | -0.57% |
| 01/12 | （空売り報告）Citigroup Global Markets Limited 337,154株（0.51%）再IN |
| 01/09 | 3,850 | 3,875 | 3,805 | 3,870 | +0.26% | 336,100 | 2532億1335万 | +0.49% |
| 01/08 | 3,885 | 3,935 | 3,835 | 3,860 | -0.64% | 269,600 | 2525億5905万 | +0.1% |
| 01/07 | 3,925 | 3,940 | 3,880 | 3,885 | 0% | 274,900 | 2541億9480万 | +0.52% |
| 01/06 | 3,965 | 3,970 | 3,855 | 3,885 | -0.51% | 259,800 | 2541億9480万 | +0.08% |
| 01/05 | 3,980 | 4,015 | 3,850 | 3,905 | -2.01% | 388,700 | 2555億340万 | +0.21% |
| 2025 |
| 12/30 | 3,955 | 4,035 | 3,915 | 3,985 | +2.57% | 341,400 | 2607億3778万 | +1.97% |
| 12/29 | 3,810 | 3,905 | 3,810 | 3,885 | +2.24% | 306,400 | 2541億9480万 | -0.79% |
| 12/29 | （空売り報告）Barclays Capital Securities Ltd 1,159,900株（1.77%）-0.12% |
| 12/26 | 3,785 | 3,820 | 3,740 | 3,800 | +0.66% | 200,000 | 2486億3327万 | -3.31% |
| 12/25 | 3,780 | 3,805 | 3,750 | 3,775 | +0.53% | 221,300 | 2469億9752万 | -4.21% |
| 12/24 | 3,800 | 3,830 | 3,730 | 3,755 | -1.96% | 228,500 | 2456億8892万 | -5.03% |
| 12/23 | 3,755 | 3,865 | 3,755 | 3,830 | +3.93% | 272,700 | 2505億9616万 | -3.6% |
| 12/22 | （IR情報）15:30 JMDC、健康状態・生活習慣と仕事のパフォーマンスの相関関係を大規模データ分析で確認 ～BMI区分や睡眠休養感が、仕事のパフォーマンスと関連する可能性を示唆～ |
| 12/22 | 3,765 | 3,780 | 3,625 | 3,685 | -1.99% | 361,400 | 2410億6020万 | -7.67% |
| 12/19 | 3,695 | 3,790 | 3,665 | 3,760 | +2.17% | 436,100 | 2459億6644万 | -6.42% |
| 12/18 | 3,675 | 3,725 | 3,660 | 3,680 | -1.74% | 434,300 | 2407億3311万 | -9% |
| 12/17 | 3,790 | 3,815 | 3,655 | 3,745 | -6.38% | 587,200 | 2449億8519万 | -8.05% |
| 12/16 | 4,000 | 4,070 | 3,920 | 4,000 | +1.52% | 472,600 | 2616億6643万 | -2.27% |
| 12/15 | 3,815 | 4,035 | 3,815 | 3,940 | +4.93% | 552,800 | 2577億4143万 | -3.95% |
| 12/15 | （IR情報）9:00 JMDCとアレクシオンファーマ、難病患者の「診断ラグ」共同調査結果を発表 ～ 診断ラグの長期化と患者・社会への大きな負担を定量的に評価 ～ |
| 12/12 | 3,710 | 3,825 | 3,670 | 3,755 | +2.46% | 254,600 | 2456億3936万 | -8.97% |
| 12/11 | 3,780 | 3,780 | 3,645 | 3,665 | -3.17% | 313,000 | 2397億5186万 | -12% |
| 12/10 | 3,840 | 3,860 | 3,710 | 3,785 | -3.69% | 421,700 | 2476億186万 | -10.14% |
| 12/09 | 3,955 | 3,995 | 3,875 | 3,930 | -1.26% | 155,700 | 2570億8726万 | -7.66% |
| 12/09 | （IR情報）9:00 JMDC、医療DX実現のためのエコシステム構築を始動 ～ 病院向け電子カルテ事業者のソフトウェア・サービスと業務提携 ～ |
| 12/08 | 4,000 | 4,030 | 3,920 | 3,980 | -0.25% | 215,700 | 2603億5809万 | -7.33% |
| 12/05 | 4,030 | 4,075 | 3,975 | 3,990 | -0.37% | 215,000 | 2610億1226万 | -7.79% |
| 12/04 | 3,875 | 4,015 | 3,870 | 4,005 | +1.91% | 333,500 | 2619億9351万 | -8.04% |
| 12/04 | （空売り報告）Barclays Capital Securities Ltd 1,241,701株（1.89%）-0.02% |
| 12/03 | 3,975 | 3,995 | 3,915 | 3,930 | -1.13% | 179,900 | 2570億8726万 | -10.44% |
| 12/02 | 4,100 | 4,115 | 3,955 | 3,975 | -3.05% | 236,000 | 2600億3101万 | -10.17% |
| 12/01 | 4,270 | 4,305 | 4,090 | 4,100 | -4.65% | 204,800 | 2682億809万 | -8.03% |
| 11/28 | 4,320 | 4,330 | 4,270 | 4,300 | +0.94% | 147,300 | 2812億9141万 | -4.15% |
| 11/27 | 4,185 | 4,330 | 4,180 | 4,260 | +1.67% | 193,400 | 2786億7475万 | -5.54% |
| 11/26 | 4,210 | 4,260 | 4,165 | 4,190 | 0% | 216,500 | 2740億9558万 | -7.53% |
| 11/25 | 4,220 | 4,305 | 4,190 | 4,190 | -0.71% | 166,300 | 2740億9558万 | -7.95% |
| 11/21 | 4,050 | 4,235 | 4,025 | 4,220 | +3.43% | 238,900 | 2760億5808万 | -7.7% |
| 11/20 | 4,140 | 4,140 | 4,075 | 4,080 | -0.61% | 164,100 | 2668億6059万 | -11.07% |
| 11/20 | （空売り報告）Barclays Capital Securities Ltd 1,254,643株（1.91%）+0.04% |
| 11/19 | 4,160 | 4,170 | 4,035 | 4,105 | -2.73% | 313,300 | 2684億9576万 | -10.92% |
| 11/18 | 4,250 | 4,310 | 4,220 | 4,220 | -1.29% | 163,400 | 2760億1757万 | -8.72% |
| 11/17 | 4,380 | 4,435 | 4,250 | 4,275 | -2.4% | 307,000 | 2796億1495万 | -7.91% |
| 11/14 | 4,380 | 4,460 | 4,345 | 4,380 | -0.45% | 186,400 | 2864億8269万 | -5.95% |
| 11/13 | 4,520 | 4,530 | 4,390 | 4,400 | +0.11% | 277,700 | 2877億9083万 | -5.76% |
| 11/13 | （空売り報告）Barclays Capital Securities Ltd 1,226,643株（1.87%）-0.03% |
| 11/12 | 4,250 | 4,460 | 4,240 | 4,395 | +3.29% | 352,400 | 2874億6380万 | -6.17% |
| 11/12 | （空売り報告）Barclays Capital Securities Ltd 1,246,143株（1.9%）+0.02% |
| 11/11 | 4,255 | 4,280 | 4,200 | 4,255 | +0.83% | 406,900 | 2783億681万 | -9.47% |
| 11/11 | （空売り報告）Barclays Capital Securities Ltd 1,231,943株（1.88%）-0.03% |
| 11/10 | 4,340 | 4,375 | 4,150 | 4,220 | -6.43% | 681,300 | 2760億1757万 | -10.44% |
| 11/10 | （空売り報告）Barclays Capital Securities Ltd 1,255,143株（1.91%）+0.11% |
| 11/07 | 4,340 | 4,600 | 4,335 | 4,510 | -5.25% | 895,400 | 2949億8560万 | -4.41% |
| 11/07 | （空売り報告）Citigroup Global Markets Limited 301,163株（0.46%）-0.09%義務消失 |
| 11/06 | （IR情報）15:30 2026年3月期第2四半期(中間期)決算短信〔IFRS〕(連結) |
| 11/06 | （IR情報）15:30 2026年3月期第2四半期決算説明資料 |
| 11/06 | 4,850 | 4,905 | 4,735 | 4,760 | -1.65% | 518,700 | 3113億3735万 | +0.98% |
| 11/05 | 4,860 | 4,890 | 4,765 | 4,840 | -1.02% | 508,600 | 3165億6991万 | +2.91% |
| 11/05 | （空売り報告）Citigroup Global Markets Limited 365,463株（0.55%）-0.05% |
| 11/04 | 4,870 | 4,950 | 4,850 | 4,890 | -0.2% | 326,100 | 3198億4026万 | +4.29% |
| 10/31 | 4,835 | 4,900 | 4,815 | 4,900 | +2.21% | 224,400 | 3204億9433万 | +4.93% |
| 10/31 | （空売り報告）Citigroup Global Markets Limited 393,863株（0.6%）+0.03% |
| 10/30 | 4,680 | 4,831 | 4,668 | 4,794 | +2.44% | 800,300 | 3135億6119万 | +2.99% |
| 10/30 | （空売り報告）Citigroup Global Markets Limited 378,263株（0.57%）再IN |
| 10/30 | （空売り報告）Barclays Capital Securities Ltd 1,183,692株（1.8%）+0.08% |
| 10/29 | 4,766 | 4,798 | 4,626 | 4,680 | -3.17% | 302,900 | 3061億479万 | +0.71% |
| 10/28 | 4,923 | 4,923 | 4,792 | 4,833 | -0.41% | 335,800 | 3161億1206万 | +4.02% |
| 10/27 | 4,860 | 4,907 | 4,834 | 4,853 | +1.27% | 321,300 | 3174億2020万 | +4.55% |
| 10/24 | 4,802 | 4,836 | 4,763 | 4,792 | -0.58% | 211,600 | 3134億3038万 | +3.34% |
| 10/24 | （空売り報告）Barclays Capital Securities Ltd 1,125,692株（1.72%）+0.08% |
| 10/23 | 4,850 | 4,876 | 4,809 | 4,820 | -1.39% | 213,200 | 3152億6177万 | +3.99% |
| 10/22 | 4,802 | 4,899 | 4,802 | 4,888 | +2.02% | 278,700 | 3197億945万 | +5.71% |
| 10/22 | （空売り報告）Citigroup Global Markets Limited 25,836株（0.03%）-0.48%義務消失 |
| 10/21 | 4,750 | 4,850 | 4,711 | 4,791 | +1.78% | 234,700 | 3133億5347万 | +3.99% |
| 10/21 | （空売り報告）Citigroup Global Markets Limited 334,090株（0.51%）再IN |
| 10/21 | （空売り報告）Barclays Capital Securities Ltd 1,077,092株（1.64%）+0.33% |
| 10/20 | 4,718 | 4,744 | 4,669 | 4,707 | +0.21% | 169,100 | 3078億5948万 | +2.48% |
| 10/17 | 4,649 | 4,750 | 4,632 | 4,697 | +1.89% | 214,200 | 3072億544万 | +2.49% |
| 10/16 | 4,604 | 4,638 | 4,521 | 4,610 | +0.68% | 218,300 | 3015億1524万 | +0.83% |
| 10/15 | 4,483 | 4,632 | 4,479 | 4,579 | +2.35% | 227,000 | 2994億8770万 | +0.31% |
| 10/14 | 4,616 | 4,622 | 4,440 | 4,474 | -5.13% | 404,300 | 2926億2021万 | -1.74% |
| 10/10 | 4,722 | 4,750 | 4,673 | 4,716 | +1.38% | 353,500 | 3084億4813万 | +3.81% |
| 10/09 | 4,625 | 4,688 | 4,603 | 4,652 | -0.53% | 244,000 | 3042億6223万 | +2.85% |
| 10/09 | （空売り報告）Barclays Capital Securities Ltd 861,892株（1.31%）-0.15% |
| 10/08 | 4,698 | 4,750 | 4,677 | 4,677 | -1.91% | 244,500 | 3058億9735万 | +3.86% |
| 10/08 | （空売り報告）Barclays Capital Securities Ltd 957,724株（1.46%）-0.18% |
| 10/07 | 4,842 | 4,850 | 4,713 | 4,768 | -0.67% | 279,900 | 3118億4917万 | +6.36% |
| 10/07 | （空売り報告）Barclays Capital Securities Ltd 1,076,529株（1.64%）-0.18% |
| 10/06 | 4,747 | 4,836 | 4,634 | 4,800 | +5.8% | 391,700 | 3139億4211万 | +7.65% |
| 10/03 | 4,437 | 4,610 | 4,434 | 4,537 | +3.4% | 295,900 | 2967億4070万 | +2.32% |
| 10/03 | （空売り報告）Barclays Capital Securities Ltd 1,194,196株（1.82%）+0.03% |
| 10/02 | 4,381 | 4,441 | 4,259 | 4,388 | -0.59% | 213,300 | 2869億9541万 | -0.77% |
| 10/02 | （空売り報告）Barclays Capital Securities Ltd 1,175,496株（1.79%）+0.1% |
| 10/01 | 4,480 | 4,503 | 4,386 | 4,414 | -1.47% | 196,800 | 2886億9593万 | -0.07% |
| 10/01 | （空売り報告）Barclays Capital Securities Ltd 1,108,996株（1.69%）+0.49% |
| 09/30 | 4,508 | 4,548 | 4,463 | 4,480 | -0.2% | 253,300 | 2930億1264万 | +1.5% |
| 09/30 | （IR情報）9:00 JMDCとYuimedi、リアルワールドデータのOMOP CDM対応に向けた協業を開始 ～ 国内最大規模のデータを国際標準規格で提供 ～ |
| 09/30 | （空売り報告）Barclays Capital Securities Ltd 787,911株（1.2%）+0.08% |
| 09/29 | 4,574 | 4,576 | 4,450 | 4,489 | +1.61% | 177,000 | 2936億128万 | +1.86% |
| 09/26 | 4,527 | 4,550 | 4,410 | 4,418 | -2.3% | 185,400 | 2889億5755万 | +0.36% |
| 09/26 | （空売り報告）MERRILL LYNCH INTERNATIONAL 25,848株（0.03%）-0.5%義務消失 |
| 09/25 | 4,567 | 4,582 | 4,482 | 4,522 | -1.61% | 210,300 | 2957億5963万 | +2.84% |
| 09/25 | （空売り報告）MERRILL LYNCH INTERNATIONAL 349,548株（0.53%）-0.02% |
| 09/24 | 4,695 | 4,720 | 4,581 | 4,596 | -1.35% | 250,100 | 3005億9957万 | +4.67% |
| 09/24 | （空売り報告）MERRILL LYNCH INTERNATIONAL 363,548株（0.55%）-0.04% |
| 09/22 | 4,698 | 4,713 | 4,652 | 4,659 | -1.48% | 156,300 | 3046億5950万 | +6.32% |
| 09/22 | （空売り報告）MERRILL LYNCH INTERNATIONAL 389,048株（0.59%）-0.02% |
| 09/22 | （空売り報告）Barclays Capital Securities Ltd 733,111株（1.12%）+0.11% |
| 09/19 | 4,780 | 4,819 | 4,698 | 4,729 | +0.4% | 360,200 | 3092億3691万 | +8.24% |
| 09/19 | （空売り報告）MERRILL LYNCH INTERNATIONAL 401,548株（0.61%）-0.05% |
| 09/18 | 4,708 | 4,769 | 4,683 | 4,710 | -0.84% | 246,400 | 3079億9447万 | +8.18% |
| 09/18 | （空売り報告）MERRILL LYNCH INTERNATIONAL 432,548株（0.66%）-0.01% |
| 09/18 | （空売り報告）Barclays Capital Securities Ltd 664,211株（1.01%）+0.1% |
| 09/17 | 4,632 | 4,778 | 4,627 | 4,750 | +4.56% | 502,000 | 3106億1013万 | +9.45% |
| 09/17 | （空売り報告）MERRILL LYNCH INTERNATIONAL 440,548株（0.67%）-0.02% |
| 09/16 | （IR情報）16:00 JMDCグループのリアルワールドデータ、医療法人徳洲会および徳洲会インフォメーションシステムと製造販売後データベース調査の実施に関する業務提携を締結 |
| 09/16 | 4,526 | 4,543 | 4,463 | 4,543 | +1.52% | 257,600 | 2970億7407万 | +5.11% |
| 09/16 | （空売り報告）MERRILL LYNCH INTERNATIONAL 456,848株（0.69%）-0.02% |
| 09/12 | 4,498 | 4,514 | 4,404 | 4,475 | +0.88% | 300,400 | 2926億2744万 | +3.73% |
| 09/11 | 4,470 | 4,492 | 4,382 | 4,436 | -0.29% | 312,800 | 2900億7717万 | +2.83% |
| 09/11 | （空売り報告）MERRILL LYNCH INTERNATIONAL 467,548株（0.71%）-0.01% |
| 09/10 | 4,441 | 4,457 | 4,362 | 4,449 | +0.18% | 210,700 | 2909億2726万 | +3.59% |
| 09/10 | （空売り報告）MERRILL LYNCH INTERNATIONAL 471,648株（0.72%）+0.01% |
| 09/09 | 4,394 | 4,494 | 4,372 | 4,441 | +0.54% | 351,600 | 2904億413万 | +3.81% |
| 09/09 | （空売り報告）MERRILL LYNCH INTERNATIONAL 466,648株（0.71%）-0.02% |
| 09/09 | （空売り報告）Barclays Capital Securities Ltd 596,500株（0.91%）+0.1% |
| 09/08 | 4,343 | 4,417 | 4,321 | 4,417 | +3.23% | 266,000 | 2888億3473万 | +3.76% |
| 09/08 | （空売り報告）MERRILL LYNCH INTERNATIONAL 479,748株（0.73%）再IN |
| 09/05 | 4,237 | 4,310 | 4,228 | 4,279 | +1.13% | 196,200 | 2798億1069万 | +0.9% |
| 09/04 | 4,262 | 4,280 | 4,162 | 4,231 | +0.33% | 243,200 | 2766億7189万 | +0.09% |
| 09/03 | 4,229 | 4,307 | 4,196 | 4,217 | +1.81% | 488,500 | 2757億5641万 | +0.05% |
| 09/02 | 4,244 | 4,271 | 4,114 | 4,142 | -1.05% | 218,800 | 2708億5204万 | -1.38% |
| 09/01 | 4,172 | 4,271 | 4,160 | 4,186 | +0.58% | 138,000 | 2737億2927万 | -0.1% |
| 09/01 | （空売り報告）Barclays Capital Securities Ltd 536,000株（0.81%）+0.02% |
| 08/29 | 4,213 | 4,227 | 4,142 | 4,162 | -0.38% | 181,500 | 2721億5987万 | -0.41% |
| 08/28 | 4,201 | 4,220 | 4,150 | 4,178 | -1.16% | 173,900 | 2732億613万 | +0.19% |
| 08/27 | 4,300 | 4,315 | 4,191 | 4,227 | -1.26% | 157,000 | 2764億1032万 | +1.71% |
| 08/27 | （空売り報告）Barclays Capital Securities Ltd 520,500株（0.79%）-0.01% |
| 08/26 | 4,325 | 4,325 | 4,262 | 4,281 | -1.02% | 169,600 | 2799億4147万 | +3.46% |
| 08/25 | 4,320 | 4,350 | 4,259 | 4,325 | 0% | 177,600 | 2828億1870万 | +5% |
| 08/22 | 4,330 | 4,330 | 4,246 | 4,325 | -0.35% | 188,200 | 2828億1870万 | +5.51% |
| 08/21 | 4,327 | 4,364 | 4,284 | 4,340 | +0.93% | 161,400 | 2837億5010万 | +6.45% |
| 08/14 | （IR情報）15:30 JMDCと住友生命、リアルワールドデータを用いた「新型コロナウイルス実態調査レポート」を公表 |
