| 2024 |
| 04/24 | 2,254 | 2,259 | 2,221 | 2,235 | 0% | 183,600 | 559億360万 | +0.4% |
| 04/23 | 2,221 | 2,249 | 2,212 | 2,235 | +1.13% | 107,600 | 559億360万 | +0.18% |
| 04/22 | 2,167 | 2,210 | 2,156 | 2,210 | +2.7% | 146,000 | 552億7828万 | -1.12% |
| 04/19 | （IR情報）16:30 2024年3月期連結決算速報値に関するお知らせ |
| 04/19 | 2,200 | 2,228 | 2,141 | 2,152 | -1.91% | 188,800 | 538億2754万 | -3.89% |
| 04/18 | 2,158 | 2,200 | 2,140 | 2,194 | +2.19% | 90,600 | 548億7808万 | -2.27% |
| 04/17 | 2,199 | 2,214 | 2,147 | 2,147 | -2.94% | 159,200 | 537億248万 | -4.54% |
| 04/16 | 2,208 | 2,230 | 2,200 | 2,212 | -0.63% | 116,700 | 553億2831万 | -1.78% |
| 04/15 | 2,180 | 2,230 | 2,168 | 2,226 | +1.23% | 119,600 | 556億7849万 | -1.15% |
| 04/12 | 2,210 | 2,210 | 2,182 | 2,199 | -0.32% | 103,200 | 550億314万 | -2.48% |
| 04/11 | 2,190 | 2,210 | 2,177 | 2,206 | -0.32% | 80,700 | 551億7823万 | -2.3% |
| 04/10 | 2,213 | 2,218 | 2,196 | 2,213 | +0.36% | 80,600 | 553億5332万 | -2.12% |
| 04/09 | 2,174 | 2,205 | 2,169 | 2,205 | +1.57% | 120,500 | 551億5322万 | -2.61% |
| 04/08 | 2,133 | 2,174 | 2,130 | 2,171 | +2.26% | 125,400 | 543億278万 | -4.23% |
| 04/05 | 2,134 | 2,149 | 2,114 | 2,123 | -2.08% | 158,500 | 531億217万 | -6.52% |
| 04/04 | 2,151 | 2,178 | 2,132 | 2,168 | +1.64% | 187,200 | 542億2775万 | -4.79% |
| 04/03 | 2,130 | 2,150 | 2,111 | 2,133 | -0.28% | 173,100 | 533億5230万 | -6.41% |
| 04/02 | 2,171 | 2,183 | 2,138 | 2,139 | -1.88% | 185,900 | 535億237万 | -6.31% |
| 04/01 | 2,243 | 2,253 | 2,165 | 2,180 | -2.72% | 179,300 | 545億2790万 | -4.6% |
| 03/29 | 2,213 | 2,245 | 2,200 | 2,241 | +0.95% | 184,500 | 560億5368万 | -1.93% |
| 03/28 | （IR情報）15:00 岩井コスモ証券 インターネット取引「コスモ・ネットレ」におけるNISA口座を通じた日本株・米国株の売買手数料無料化のお知らせ |
| 03/28 | 2,230 | 2,250 | 2,198 | 2,220 | -5.53% | 298,900 | 555億2841万 | -2.76% |
| 03/27 | 2,354 | 2,365 | 2,325 | 2,350 | +0.3% | 462,200 | 587億8008万 | +2.98% |
| 03/26 | 2,363 | 2,377 | 2,331 | 2,343 | -0.8% | 370,800 | 586億499万 | +2.94% |
| 03/25 | 2,415 | 2,420 | 2,362 | 2,362 | -1.05% | 575,500 | 590億8023万 | +4.14% |
| 03/22 | （IR情報）16:30 2024年3月期の期末配当予定に関するお知らせ |
| 03/22 | （IR情報）16:30 岩井コスモ証券株式会社 人事異動に関するお知らせ |
| 03/22 | 2,409 | 2,412 | 2,373 | 2,387 | -0.5% | 112,100 | 597億555万 | +5.71% |
| 03/21 | 2,366 | 2,404 | 2,362 | 2,399 | +2.13% | 112,000 | 600億570万 | +6.76% |
| 03/19 | 2,350 | 2,355 | 2,323 | 2,349 | +0.21% | 93,300 | 587億5506万 | +5.01% |
| 03/18 | 2,317 | 2,348 | 2,309 | 2,344 | +1.78% | 125,900 | 586億3000万 | +5.25% |
| 03/15 | 2,323 | 2,323 | 2,283 | 2,303 | -0.82% | 68,100 | 576億447万 | +3.88% |
| 03/14 | 2,281 | 2,322 | 2,272 | 2,322 | +1.71% | 128,900 | 580億7972万 | +5.07% |
| 03/13 | 2,234 | 2,284 | 2,213 | 2,283 | +2.93% | 137,700 | 571億422万 | +3.77% |
| 03/12 | 2,202 | 2,221 | 2,176 | 2,218 | -0.36% | 71,300 | 554億7839万 | +1.19% |
| 03/11 | 2,270 | 2,270 | 2,203 | 2,226 | -2.75% | 85,400 | 556億7849万 | +1.78% |
| 03/08 | 2,250 | 2,309 | 2,246 | 2,289 | +1.02% | 96,200 | 572億5429万 | +4.9% |
| 03/07 | 2,279 | 2,334 | 2,258 | 2,266 | -0.57% | 116,100 | 566億7900万 | +4.14% |
| 03/06 | 2,297 | 2,297 | 2,268 | 2,279 | -0.7% | 79,800 | 570億417万 | +5.02% |
| 03/05 | 2,297 | 2,315 | 2,271 | 2,295 | +0.13% | 99,900 | 574億437万 | +6.05% |
| 03/04 | 2,300 | 2,310 | 2,276 | 2,292 | +0.97% | 94,300 | 573億2933万 | +6.31% |
| 03/01 | 2,300 | 2,308 | 2,266 | 2,270 | +0.18% | 86,900 | 567億7905万 | +5.63% |
| 02/29 | 2,221 | 2,272 | 2,221 | 2,266 | +1.84% | 116,200 | 566億7900万 | +5.89% |
| 02/28 | 2,228 | 2,253 | 2,221 | 2,225 | +0.14% | 72,300 | 556億5348万 | +4.36% |
| 02/27 | 2,191 | 2,262 | 2,190 | 2,222 | +1.46% | 134,600 | 555億7844万 | +4.56% |
| 02/26 | 2,214 | 2,230 | 2,190 | 2,190 | -0.27% | 93,200 | 547億7803万 | +3.64% |
| 02/22 | 2,192 | 2,196 | 2,178 | 2,196 | +0.41% | 70,300 | 549億2810万 | +4.42% |
| 02/21 | 2,190 | 2,208 | 2,175 | 2,187 | +0.14% | 55,600 | 547億299万 | +4.54% |
| 02/20 | 2,210 | 2,215 | 2,179 | 2,184 | -1.18% | 80,100 | 546億2795万 | +4.95% |
| 02/19 | 2,145 | 2,210 | 2,140 | 2,210 | +3.51% | 108,000 | 552億7828万 | +6.76% |
| 02/16 | 2,129 | 2,141 | 2,118 | 2,135 | +1.62% | 61,900 | 534億232万 | +3.79% |
| 02/15 | 2,145 | 2,150 | 2,101 | 2,101 | -1.22% | 69,000 | 525億5189万 | +2.59% |
| 02/14 | 2,145 | 2,145 | 2,113 | 2,127 | -0.61% | 57,000 | 532億222万 | +4.26% |
| 02/13 | 2,126 | 2,150 | 2,118 | 2,140 | +1.61% | 79,900 | 535億2739万 | +5.42% |
| 02/09 | 2,105 | 2,117 | 2,089 | 2,106 | +0.29% | 48,600 | 526億7695万 | +4.26% |
| 02/08 | 2,121 | 2,122 | 2,084 | 2,100 | -0.62% | 64,000 | 525億2688万 | +4.48% |
| 02/07 | 2,082 | 2,116 | 2,071 | 2,113 | +1.39% | 64,000 | 528億5204万 | +5.7% |
| 02/06 | 2,080 | 2,095 | 2,070 | 2,084 | -0.14% | 40,300 | 521億2667万 | +4.83% |
| 02/05 | 2,100 | 2,110 | 2,072 | 2,087 | +0.34% | 66,000 | 522億171万 | +5.51% |
| 02/02 | 2,117 | 2,117 | 2,076 | 2,080 | -1.75% | 88,600 | 520億2662万 | +5.8% |
| 02/01 | 2,113 | 2,153 | 2,113 | 2,117 | -0.61% | 69,000 | 529億5209万 | +8.34% |
| 01/31 | 2,120 | 2,135 | 2,110 | 2,130 | +0.61% | 58,500 | 532億7726万 | +9.74% |
| 01/30 | 2,136 | 2,138 | 2,101 | 2,117 | -0.75% | 107,100 | 529億5209万 | +9.97% |
| 01/29 | 2,099 | 2,162 | 2,091 | 2,133 | +1.67% | 166,000 | 533億5230万 | +11.56% |
| 01/26 | （IR情報）16:30 2024年3月期第3四半期決算短信[日本基準](連結) |
| 01/26 | 2,093 | 2,104 | 2,076 | 2,098 | -0.66% | 154,400 | 524億7685万 | +10.65% |
| 01/25 | 2,040 | 2,118 | 2,040 | 2,112 | +3.28% | 155,500 | 528億2703万 | +12.22% |
| 01/24 | 2,055 | 2,071 | 2,035 | 2,045 | -0.49% | 96,800 | 511億5117万 | +9.59% |
| 01/23 | 2,071 | 2,078 | 2,047 | 2,055 | -0.1% | 192,900 | 514億130万 | +10.84% |
| 01/22 | 2,011 | 2,065 | 2,009 | 2,057 | +6.53% | 366,600 | 514億5132万 | +11.61% |
| 01/19 | （IR情報）16:30 2024年3月期第3四半期連結決算速報値に関するお知らせ |
| 01/19 | 1,945 | 1,948 | 1,920 | 1,931 | -0.16% | 96,300 | 482億9971万 | +5.46% |
| 01/18 | 1,909 | 1,938 | 1,909 | 1,934 | +1.42% | 46,900 | 483億7475万 | +6.03% |
| 01/17 | 1,920 | 1,936 | 1,907 | 1,907 | -0.37% | 72,300 | 476億9940万 | +5.01% |
| 01/16 | 1,920 | 1,925 | 1,901 | 1,914 | -0.31% | 54,600 | 478億7449万 | +5.75% |
| 01/15 | 1,870 | 1,931 | 1,870 | 1,920 | +2.67% | 96,700 | 480億2457万 | +6.43% |
| 01/12 | 1,922 | 1,922 | 1,870 | 1,870 | -2.65% | 88,100 | 467億7393万 | +4.06% |
| 01/11 | 1,900 | 1,945 | 1,900 | 1,921 | +1.53% | 164,200 | 480億4958万 | +7.08% |
| 01/10 | 1,893 | 1,904 | 1,880 | 1,892 | -0.05% | 74,300 | 473億2421万 | +5.88% |
| 01/09 | 1,888 | 1,906 | 1,881 | 1,893 | +1.12% | 93,300 | 473億4923万 | +6.23% |
| 01/05 | 1,868 | 1,880 | 1,861 | 1,872 | +0.43% | 70,500 | 468億2396万 | +5.41% |
| 01/04 | 1,835 | 1,865 | 1,822 | 1,864 | +1.41% | 70,200 | 466億2385万 | +5.25% |
| 2023 |
| 12/29 | 1,825 | 1,848 | 1,825 | 1,838 | +0.71% | 46,600 | 459億7352万 | +4.02% |
| 12/28 | 1,810 | 1,828 | 1,794 | 1,825 | -0.27% | 62,900 | 456億4836万 | +3.46% |
| 12/27 | 1,797 | 1,833 | 1,797 | 1,830 | +1.72% | 119,700 | 457億7342万 | +3.92% |
| 12/26 | 1,788 | 1,800 | 1,780 | 1,799 | +0.62% | 42,400 | 449億9802万 | +2.27% |
| 12/25 | 1,781 | 1,794 | 1,776 | 1,788 | +0.73% | 59,200 | 447億2288万 | +1.76% |
| 12/22 | 1,746 | 1,775 | 1,746 | 1,775 | +1.66% | 47,600 | 443億9772万 | +1.08% |
| 12/21 | 1,751 | 1,761 | 1,742 | 1,746 | -1.3% | 41,400 | 436億7234万 | -0.46% |
| 12/20 | 1,759 | 1,777 | 1,743 | 1,769 | +1.26% | 65,800 | 442億4764万 | +0.86% |
| 12/19 | 1,742 | 1,748 | 1,727 | 1,747 | +0.75% | 52,900 | 436億9736万 | -0.4% |
| 12/18 | 1,722 | 1,741 | 1,698 | 1,734 | 0% | 96,000 | 433億7219万 | -1.14% |
| 12/15 | 1,743 | 1,761 | 1,726 | 1,734 | -0.52% | 49,400 | 433億7219万 | -1.2% |
| 12/14 | 1,755 | 1,769 | 1,742 | 1,743 | -1.53% | 43,700 | 435億9731万 | -0.74% |
| 12/13 | 1,766 | 1,783 | 1,758 | 1,770 | +0.23% | 54,700 | 442億7265万 | +0.85% |
| 12/12 | 1,753 | 1,775 | 1,743 | 1,766 | +0.86% | 73,400 | 441億7260万 | +0.68% |
| 12/11 | 1,732 | 1,751 | 1,732 | 1,751 | +1.57% | 47,700 | 437億9741万 | -0.17% |
| 12/08 | 1,759 | 1,765 | 1,717 | 1,724 | -2.1% | 84,200 | 431億2206万 | -1.77% |
| 12/07 | 1,757 | 1,764 | 1,751 | 1,761 | -0.96% | 56,500 | 440億4754万 | +0.17% |
| 12/06 | 1,748 | 1,783 | 1,740 | 1,778 | +1.83% | 38,700 | 444億7275万 | +1.08% |
| 12/05 | 1,759 | 1,773 | 1,746 | 1,746 | -1.52% | 38,000 | 436億7234万 | -0.68% |
| 12/04 | 1,770 | 1,781 | 1,756 | 1,773 | +0.23% | 37,600 | 443億4769万 | +0.8% |
| 12/01 | 1,761 | 1,777 | 1,761 | 1,769 | +0.51% | 36,800 | 442億4764万 | +0.74% |
| 11/30 | 1,743 | 1,763 | 1,732 | 1,760 | +1.09% | 67,800 | 440億2252万 | +0.4% |
| 11/29 | 1,745 | 1,750 | 1,731 | 1,741 | -0.57% | 74,500 | 435億4728万 | -0.51% |
| 11/28 | 1,770 | 1,770 | 1,748 | 1,751 | -0.62% | 34,300 | 437億9741万 | +0.11% |
