日付	始値	高値	安値	終値	前日比	出来高	時価総額	25日乖離
2026
09/28	4,420	4,485	4,420	4,425	-0.34%	101,100	-	+4.44%
09/25	4,360	4,480	4,360	4,440	+1.6%	142,900	-	+5.24%
09/24	4,325	4,455	4,310	4,370	+0.58%	138,000	-	+4.05%
09/18	4,385	4,420	4,330	4,345	-0.91%	370,400	-	+3.85%
09/18	（空売り報告）Barclays Capital Securities Ltd 555,700株（0.86%）-0.04%
09/17	4,290	4,405	4,290	4,385	+2.1%	126,400	-	+5%
09/16	4,340	4,370	4,290	4,295	-0.69%	105,100	-	+3.22%
09/16	（空売り報告）Barclays Capital Securities Ltd 582,600株（0.9%）+0.01%
09/15	4,330	4,335	4,260	4,325	+0.82%	104,800	-	+4.22%
09/14	4,260	4,335	4,240	4,290	+0.47%	93,500	-	+3.75%
09/11	4,180	4,270	4,165	4,270	+1.07%	105,500	-	+3.49%
09/10	4,090	4,240	4,090	4,225	+1.81%	64,400	-	+2.6%
09/09	4,190	4,205	4,150	4,150	-1.66%	64,600	-	+1%
09/09	（空売り報告）Barclays Capital Securities Ltd 577,000株（0.89%）-0.1%
09/08	（5%ルール）さくら損害保険（0.85%）ヒカリ・ツウシン・インベストメンツ・アジア・プラ…（4.96%）光通信（4.48%）UH Partners 2（2.43%）UH5（0.13%）UH6（3.38%）UH7（0.13%）アイビー（0.06%）
09/08	4,125	4,230	4,110	4,220	+1.56%	85,400	-	+2.85%
09/08	（空売り報告）Barclays Capital Securities Ltd 640,700株（0.99%）-0.02%
09/07	4,300	4,300	4,150	4,155	-2.92%	80,200	-	+1.47%
09/04	4,305	4,315	4,235	4,280	+0.47%	61,500	-	+4.65%
09/03	4,230	4,300	4,225	4,260	+1.43%	100,900	-	+4.36%
09/02	4,215	4,250	4,175	4,200	-1.98%	89,000	-	+3.07%
09/01	4,280	4,305	4,250	4,285	+0.12%	90,400	-	+5.44%
08/31	4,210	4,280	4,200	4,280	+1.66%	102,800	-	+5.65%
08/31	（空売り報告）GOLDMAN SACHS INTERNATIONAL 340,345株（0.52%）再IN
08/28	4,200	4,240	4,175	4,210	+1.69%	95,000	-	+4.49%
08/27	4,095	4,210	4,095	4,140	+0.49%	79,000	-	+3.27%
08/26	4,150	4,175	4,100	4,120	+0.49%	61,800	-	+3.18%
08/25	4,095	4,135	4,065	4,100	+0.12%	89,100	-	+3.02%
08/24	4,060	4,135	4,040	4,095	+1.49%	100,100	-	+3.2%
08/21	（5%ルール）さくら損害保険（0.84%）ヒカリ・ツウシン・インベストメンツ・アジア・プラ…（4.96%）光通信（4.48%）UH Partners 2（2.27%）UH5（0.13%）UH6（3.38%）UH7（0.13%）アイビー（0.06%）
08/21	4,045	4,055	3,975	4,035	0%	113,700	-	+1.95%
08/20	4,020	4,035	3,990	4,035	+1.64%	73,000	-	+2.15%
08/19	3,970	3,990	3,905	3,970	+0.13%	86,200	-	+0.66%
08/18	3,955	3,995	3,920	3,965	-0.25%	70,500	-	+0.63%
08/17	4,075	4,110	3,975	3,975	-3.64%	88,000	-	+0.89%
08/14	4,030	4,150	3,995	4,125	+2.87%	107,900	-	+4.8%
08/13	3,995	4,045	3,960	4,010	-0.37%	65,200	-	+2.06%
08/12	4,010	4,050	3,945	4,025	+1.64%	85,400	-	+2.5%
08/10	3,920	4,020	3,825	3,960	-2.46%	126,200	-	+0.94%
08/07	（IR情報）16:00 2027年3月期第1四半期決算短信〔日本基準〕(連結)
08/07	4,085	4,135	4,040	4,060	-0.25%	100,300	-	+3.65%
08/06	4,000	4,090	3,985	4,070	+1.5%	71,000	-	+4.2%
08/05	3,990	4,030	3,985	4,010	+0.5%	69,700	-	+3.11%
08/04	4,025	4,095	3,950	3,990	-0.75%	91,000	-	+2.97%
08/03	4,030	4,035	3,920	4,020	-0.25%	91,800	-	+4.06%
07/31	4,090	4,090	4,010	4,030	-1.47%	98,500	-	+4.76%
07/30	4,080	4,095	4,005	4,090	+0.62%	91,600	-	+6.87%
07/30	（空売り報告）Barclays Capital Securities Ltd 654,200株（1.01%）+0.02%
07/29	3,990	4,095	3,960	4,065	+3.17%	114,100	-	+6.78%
07/28	3,970	3,980	3,920	3,940	-0.51%	90,400	-	+3.99%
07/27	3,795	3,960	3,795	3,960	+6.31%	128,500	-	+4.76%
07/24	3,650	3,745	3,650	3,725	+0.13%	62,000	-	-1.22%
07/23	3,705	3,730	3,685	3,720	-0.4%	57,800	-	-1.43%
07/22	3,790	3,820	3,735	3,735	-1.58%	68,800	-	-1.09%
07/21	3,845	3,865	3,795	3,795	-0.26%	64,600	-	+0.5%
07/17	3,815	3,865	3,760	3,805	-0.78%	75,700	-	+0.74%
07/16	3,840	3,875	3,825	3,835	-0.13%	85,900	-	+1.54%
07/16	（空売り報告）Barclays Capital Securities Ltd 638,300株（0.99%）-0.01%
07/15	3,870	3,895	3,800	3,840	-1.16%	84,300	-	+1.64%
07/15	（空売り報告）Barclays Capital Securities Ltd 642,500株（1%）+0.07%
07/14	3,880	3,925	3,860	3,885	+0.65%	86,900	-	+2.8%
07/13	3,930	3,940	3,840	3,860	-2.65%	73,400	-	+2.12%
07/10	3,930	3,990	3,920	3,965	+2.06%	122,500	-	+4.84%
07/09	3,875	3,935	3,870	3,885	-1.52%	73,200	-	+2.64%
07/08	3,900	3,975	3,900	3,945	-0.13%	84,800	-	+4.03%
07/07	3,955	3,995	3,940	3,950	+0.38%	83,700	-	+4%
07/06	3,810	3,935	3,810	3,935	+3.15%	81,900	-	+3.42%
07/03	3,775	3,845	3,775	3,815	+1.06%	84,200	-	-0.03%
07/02	3,730	3,825	3,725	3,775	+3.14%	114,700	-	-1.36%
07/01	3,625	3,670	3,625	3,660	0%	65,000	-	-4.56%
06/30	3,695	3,740	3,635	3,660	-0.68%	111,200	-	-4.89%
06/29	3,665	3,755	3,655	3,685	+2.08%	99,700	-	-4.63%
06/26	（IR情報）16:00 支配株主等に関する事項について
06/26	3,520	3,620	3,520	3,610	+1.98%	110,200	-	-6.81%
06/25	3,650	3,650	3,530	3,540	-1.53%	91,400	-	-8.88%
06/24	3,630	3,635	3,575	3,595	-0.14%	70,900	-	-7.75%
06/23	3,675	3,675	3,595	3,600	-3.1%	93,100	-	-7.81%
06/22	（5%ルール）さくら損害保険（0.82%）ヒカリ・ツウシン・インベストメンツ・アジア・プラ…（4.96%）光通信（4.25%）UH Partners 2（1.51%）UH5（0.13%）UH6（3.38%）UH7（0.13%）アイビー（0.06%）
06/22	3,750	3,800	3,715	3,715	-0.93%	112,700	-	-5.08%
06/19	3,785	3,800	3,680	3,750	-0.92%	331,500	-	-4.29%
06/18	3,735	3,825	3,735	3,785	+0.53%	58,700	-	-3.39%
06/17	3,780	3,805	3,735	3,765	+0.4%	82,800	-	-3.73%
06/17	（空売り報告）Morgan Stanley & Co. International plc 212,115株（0.33%）-0.34%義務消失
06/16	3,800	3,810	3,750	3,750	-1.96%	95,300	-	-4.04%
06/16	（空売り報告）Morgan Stanley & Co. International plc 430,934株（0.67%）再IN
06/15	3,810	3,875	3,805	3,825	+0.79%	83,900	-	-2.05%
06/12	3,840	3,845	3,785	3,795	-1.43%	117,800	-	-2.69%
06/11	3,895	3,895	3,810	3,850	-0.9%	96,600	-	-1.23%
06/10	3,880	3,900	3,800	3,885	-0.38%	125,100	-	-0.18%
06/09	3,950	3,965	3,855	3,900	-0.26%	100,200	-	+0.39%
06/08	3,995	4,020	3,865	3,910	-3.46%	127,800	-	+0.85%
06/05	4,085	4,105	4,035	4,050	+0.12%	68,800	-	+4.65%
06/04	4,020	4,085	4,005	4,045	-1.1%	124,000	-	+4.9%
06/03	4,060	4,100	4,000	4,090	-0.97%	153,100	-	+6.59%
06/03	（空売り報告）Barclays Capital Securities Ltd 598,600株（0.93%）+0.13%
06/02	4,225	4,290	4,110	4,130	-1.9%	179,300	-	+8.23%
06/01	4,155	4,260	4,135	4,210	+3.06%	180,100	-	+10.91%
05/29	3,985	4,235	3,985	4,085	+2.51%	201,100	-	+8.3%
05/28	4,000	4,025	3,925	3,985	+0.13%	161,000	-	+6.18%
05/27	4,070	4,080	3,955	3,980	-1.97%	167,500	-	+6.42%
05/26	3,945	4,075	3,940	4,060	+2.92%	181,000	-	+8.99%
05/25	3,910	3,950	3,850	3,945	+1.41%	137,600	-	+6.42%
05/22	3,845	3,900	3,825	3,890	+1.57%	73,800	-	+5.36%
05/21	3,775	3,860	3,775	3,830	+1.06%	84,200	-	+4.16%
05/20	3,805	3,815	3,740	3,790	-1.3%	97,200	-	+3.35%
05/19	3,855	3,870	3,795	3,840	+0.79%	128,100	-	+4.92%
05/18	3,735	3,825	3,715	3,810	+2.01%	153,700	-	+4.3%
05/15	3,680	3,770	3,645	3,735	+3.18%	172,700	-	+2.5%
05/14	（IR情報）16:00 前期実績との差異に関するお知らせ
05/14	（IR情報）16:00 剰余金の配当(増配)と2027年3月期の配当予想に関するお知らせ
05/14	（IR情報）16:00 2026年3月期決算短信〔日本基準〕(連結)
05/14	3,680	3,715	3,615	3,620	-1.9%	129,100	-	-0.44%
05/13	3,680	3,745	3,655	3,690	+0.54%	125,200	-	+1.6%
05/12	3,690	3,760	3,655	3,670	-1.21%	124,300	-	+1.24%
05/11	3,775	3,785	3,710	3,715	-0.8%	103,200	-	+2.6%
05/08	3,765	3,790	3,715	3,745	+1.35%	139,200	-	+3.68%
05/07	3,705	3,745	3,680	3,695	-0.14%	107,700	-	+2.64%
05/01	3,705	3,725	3,655	3,700	+0.14%	112,600	-	+3.01%
04/30	3,700	3,720	3,660	3,695	-1.47%	168,000	-	+3.1%

ジャストシステム（4686）のイベントチャート

2026/04/30～2026/09/28

イベント情報＆株価推移

開示資料

決算

株式

チャート