| 2018 |
| 12/25 | 1,406 | 1,440 | 1,382 | 1,386 | -5.46% | 312,000 | 967億2131万 | -18.8% |
| 12/21 | 1,462 | 1,507 | 1,458 | 1,466 | -2.4% | 570,200 | 1023億407万 | -14.92% |
| 12/20 | 1,557 | 1,571 | 1,497 | 1,502 | -5.77% | 241,700 | 1048億1632万 | -13.48% |
| 12/19 | （IR情報）18:00 自己株式の消却に関するお知らせ |
| 12/19 | 1,578 | 1,610 | 1,578 | 1,594 | -0.93% | 292,700 | 1112億3649万 | -8.86% |
| 12/18 | 1,585 | 1,639 | 1,581 | 1,609 | -0.19% | 401,400 | 1122億8326万 | -8.42% |
| 12/17 | 1,609 | 1,645 | 1,609 | 1,612 | -1.1% | 150,600 | 1124億9261万 | -8.93% |
| 12/14 | 1,652 | 1,664 | 1,613 | 1,630 | -2.74% | 282,200 | 1137億4873万 | -8.53% |
| 12/13 | 1,675 | 1,689 | 1,663 | 1,676 | +0.96% | 107,000 | 1169億5882万 | -6.58% |
| 12/12 | 1,646 | 1,684 | 1,646 | 1,660 | +0.61% | 440,000 | 1158億4227万 | -7.98% |
| 12/11 | 1,678 | 1,679 | 1,623 | 1,650 | -0.6% | 598,500 | 1151億4442万 | -8.99% |
| 12/10 | 1,679 | 1,679 | 1,618 | 1,660 | -2.64% | 504,400 | 1158億4227万 | -8.89% |
| 12/07 | 1,731 | 1,746 | 1,693 | 1,705 | +0.24% | 440,200 | 1189億8257万 | -6.93% |
| 12/06 | 1,754 | 1,782 | 1,670 | 1,701 | -5.18% | 971,800 | 1187億343万 | -7.6% |
| 12/05 | （IR情報）13:30 アルプス電気株式会社とアルパイン株式会社との持株会社体制への移行を伴う経営統合(株式交換)に関する臨時主総会の承認可決についてのお知らせ |
| 12/05 | 1,775 | 1,821 | 1,755 | 1,794 | -1.37% | 459,700 | 1251億9339万 | -3.03% |
| 12/05 | （IR情報）8:00 当社株主からの当社臨時株主総会における事前質問書(追加分)に対する当社見解の公表に関するお知らせ |
| 12/04 | （IR情報）15:00 当社株主からの当社臨時株主総会における事前質問書に対する当社見解の公表に関するお知らせ |
| 12/04 | 1,904 | 1,906 | 1,815 | 1,819 | -4.01% | 290,900 | 1269億3800万 | -1.73% |
| 12/03 | 1,894 | 1,916 | 1,886 | 1,895 | +3.05% | 422,300 | 1322億4162万 | +2.32% |
| 11/30 | 1,839 | 1,856 | 1,829 | 1,839 | +0.66% | 210,000 | 1283億3369万 | -0.54% |
| 11/29 | 1,814 | 1,843 | 1,804 | 1,827 | +1.9% | 220,500 | 1274億9628万 | -1.19% |
| 11/28 | 1,796 | 1,814 | 1,776 | 1,793 | +0.34% | 1,080,800 | 1251億2361万 | -3.29% |
| 11/27 | 1,863 | 1,877 | 1,757 | 1,787 | -3.51% | 1,157,700 | 1247億490万 | -4.03% |
| 11/26 | 1,886 | 1,925 | 1,831 | 1,852 | 0% | 595,400 | 1292億4089万 | -1.12% |
| 11/26 | （IR情報）9:00 当社臨時株主総会に関するISSレポートに対する当社見解について |
| 11/22 | 1,808 | 1,861 | 1,774 | 1,852 | +3% | 342,400 | 1292億4089万 | -1.44% |
| 11/21 | 1,749 | 1,804 | 1,743 | 1,798 | +0.95% | 131,700 | 1254億7253万 | -4.77% |
| 11/20 | 1,763 | 1,797 | 1,748 | 1,781 | -0.22% | 218,600 | 1242億8619万 | -6.21% |
| 11/19 | 1,775 | 1,804 | 1,762 | 1,785 | +0.39% | 144,900 | 1245億6533万 | -6.64% |
| 11/16 | 1,802 | 1,818 | 1,774 | 1,778 | -1.28% | 280,700 | 1240億7684万 | -7.54% |
| 11/15 | （IR情報）9:50 当社とアルプス電気株式会社の経営統合に関する当社の考え方について |
| 11/15 | 1,805 | 1,819 | 1,781 | 1,801 | -1.37% | 155,500 | 1256億8188万 | -6.88% |
| 11/14 | 1,831 | 1,855 | 1,818 | 1,826 | +1.16% | 219,400 | 1274億2649万 | -5.97% |
| 11/13 | 1,812 | 1,823 | 1,731 | 1,805 | -5.6% | 595,400 | 1259億6102万 | -7.81% |
| 11/12 | 1,937 | 1,939 | 1,893 | 1,912 | -0.57% | 508,500 | 1334億2796万 | -3.04% |
| 11/09 | 1,938 | 1,954 | 1,892 | 1,923 | -0.67% | 437,500 | 1341億9559万 | -3.07% |
| 11/08 | 1,968 | 1,977 | 1,900 | 1,936 | +0.41% | 135,000 | 1351億279万 | -2.91% |
| 11/07 | 1,903 | 1,960 | 1,901 | 1,928 | +2.99% | 219,100 | 1345億4451万 | -3.74% |
| 11/06 | 1,881 | 1,888 | 1,835 | 1,872 | -0.43% | 152,300 | 1306億3658万 | -6.96% |
| 11/05 | 1,888 | 1,907 | 1,871 | 1,880 | -1.83% | 139,400 | 1311億9486万 | -7.11% |
| 11/02 | （IR情報）10:15 臨時株主総会開催日及び付議議案並びに剰余金の配当の効力発生日の決定に関するお知らせ |
| 11/02 | 1,911 | 1,919 | 1,860 | 1,915 | -0.36% | 235,000 | 1336億3731万 | -5.85% |
| 11/01 | 1,921 | 1,955 | 1,915 | 1,922 | +0.05% | 169,000 | 1341億2581万 | -6.01% |
| 10/31 | 1,907 | 1,930 | 1,854 | 1,921 | +5.15% | 479,000 | 1340億5602万 | -6.66% |
| 10/30 | （IR情報）15:00 2019年3月期第2四半期決算短信〔日本基準〕(連結) |
| 10/30 | 1,807 | 1,844 | 1,779 | 1,827 | -0.71% | 1,192,700 | 1274億9628万 | -11.74% |
| 10/29 | 1,886 | 1,906 | 1,827 | 1,840 | +0.38% | 182,800 | 1284億348万 | -11.75% |
| 10/26 | 1,849 | 1,866 | 1,821 | 1,833 | +0.55% | 291,300 | 1279億1499万 | -12.8% |
| 10/25 | （IR情報）15:00 株主提案に対する当社取締役会意見に関するお知らせ |
| 10/25 | 1,899 | 1,901 | 1,820 | 1,823 | -7.18% | 258,700 | 1272億1714万 | -14.05% |
| 10/24 | 2,015 | 2,022 | 1,958 | 1,964 | -1.7% | 225,600 | 1370億5675万 | -8.22% |
| 10/23 | 2,037 | 2,037 | 1,993 | 1,998 | -2.39% | 236,200 | 1394億2943万 | -7.24% |
| 10/22 | 2,012 | 2,063 | 2,000 | 2,047 | +1.34% | 99,500 | 1428億4887万 | -5.45% |
| 10/19 | 2,030 | 2,053 | 2,007 | 2,020 | -1.94% | 218,100 | 1409億6469万 | -7.17% |
| 10/18 | 2,092 | 2,104 | 2,055 | 2,060 | -0.63% | 210,600 | 1437億5607万 | -5.94% |
| 10/17 | 2,129 | 2,140 | 2,061 | 2,073 | -1.29% | 348,700 | 1446億6327万 | -5.9% |
| 10/16 | 2,064 | 2,108 | 2,064 | 2,100 | +1.35% | 363,100 | 1465億4745万 | -5.19% |
| 10/15 | （IR情報）12:00 株主提案に関する書面の受領のお知らせ |
| 10/15 | 2,040 | 2,118 | 2,011 | 2,072 | +0.78% | 671,600 | 1445億9348万 | -7% |
| 10/12 | 2,002 | 2,060 | 1,991 | 2,056 | +2.39% | 622,300 | 1434億7693万 | -8.3% |
| 10/11 | 2,065 | 2,085 | 1,996 | 2,008 | -8.93% | 670,000 | 1401億2727万 | -11.03% |
| 10/10 | 2,153 | 2,207 | 2,139 | 2,205 | +2.42% | 768,300 | 1538億7482万 | -3.08% |
| 10/09 | 2,147 | 2,171 | 2,072 | 2,153 | -2.76% | 1,759,400 | 1502億4603万 | -5.82% |
| 10/05 | 2,161 | 2,224 | 2,143 | 2,214 | +1.28% | 723,400 | 1545億288万 | -3.61% |
| 10/04 | 2,153 | 2,189 | 2,143 | 2,186 | +1.67% | 497,100 | 1525億4891万 | -5.2% |
| 10/03 | 2,163 | 2,205 | 2,150 | 2,150 | -0.14% | 328,700 | 1500億3667万 | -7.13% |
| 10/02 | 2,174 | 2,181 | 2,149 | 2,153 | -0.69% | 264,500 | 1502億4603万 | -7.44% |
| 10/01 | 2,146 | 2,177 | 2,140 | 2,168 | +1.55% | 198,000 | 1512億9279万 | -7.15% |
| 09/28 | 2,225 | 2,230 | 2,128 | 2,135 | -2.82% | 405,000 | 1489億8990万 | -8.92% |
| 09/27 | （IR情報）15:00 アルプス電気株式会社との間の株式交換に関する臨時株主総会招集のための基準日設定及び剰余金の配当並びに最終検証に関するお知らせ |
| 09/27 | 2,230 | 2,230 | 2,188 | 2,197 | -1.83% | 299,600 | 1533億1654万 | -6.63% |
| 09/26 | 2,230 | 2,262 | 2,204 | 2,238 | +0.67% | 352,100 | 1561億7771万 | -5.13% |
| 09/25 | 2,207 | 2,236 | 2,176 | 2,223 | +0.86% | 539,200 | 1551億3094万 | -5.96% |
| 09/21 | 2,260 | 2,260 | 2,167 | 2,204 | -2.61% | 394,900 | 1538億504万 | -6.96% |
| 09/20 | 2,324 | 2,326 | 2,260 | 2,263 | -2.25% | 155,200 | 1579億2232万 | -4.64% |
| 09/19 | 2,320 | 2,333 | 2,300 | 2,315 | +1.09% | 276,300 | 1615億5111万 | -2.57% |
| 09/18 | 2,331 | 2,338 | 2,285 | 2,290 | -1.38% | 248,700 | 1598億650万 | -3.78% |
| 09/14 | 2,260 | 2,328 | 2,254 | 2,322 | +2.7% | 270,600 | 1620億3961万 | -2.56% |
| 09/13 | 2,327 | 2,331 | 2,253 | 2,261 | -3.04% | 300,100 | 1577億8275万 | -5.28% |
| 09/12 | 2,362 | 2,379 | 2,307 | 2,332 | -1.56% | 129,500 | 1627億3745万 | -2.63% |
| 09/11 | 2,370 | 2,389 | 2,367 | 2,369 | -0.38% | 136,000 | 1653億1948万 | -1.29% |
| 09/10 | 2,378 | 2,399 | 2,374 | 2,378 | -0.5% | 66,800 | 1659億4754万 | -1.08% |
| 09/07 | 2,400 | 2,406 | 2,360 | 2,390 | -1.32% | 141,700 | 1667億8495万 | -0.71% |
| 09/06 | 2,444 | 2,444 | 2,395 | 2,422 | -0.25% | 116,800 | 1690億1806万 | +0.46% |
| 09/05 | 2,422 | 2,449 | 2,420 | 2,428 | -0.08% | 96,100 | 1694億3676万 | +0.54% |
| 09/04 | 2,452 | 2,457 | 2,429 | 2,430 | -0.9% | 76,200 | 1695億7633万 | +0.41% |
| 09/03 | 2,461 | 2,463 | 2,426 | 2,452 | -0.73% | 97,000 | 1711億1159万 | +1.2% |
| 08/31 | 2,420 | 2,473 | 2,411 | 2,470 | +1.23% | 169,300 | 1723億6771万 | +1.9% |
| 08/30 | 2,452 | 2,457 | 2,427 | 2,440 | -0.04% | 89,200 | 1702億7418万 | +0.7% |
| 08/29 | 2,439 | 2,456 | 2,410 | 2,441 | +1.2% | 151,300 | 1703億4396万 | +0.74% |
| 08/28 | 2,417 | 2,423 | 2,391 | 2,412 | -0.21% | 95,100 | 1683億2021万 | -0.45% |
| 08/27 | 2,403 | 2,425 | 2,402 | 2,417 | +1.34% | 95,900 | 1686億6913万 | -0.33% |
| 08/24 | 2,393 | 2,405 | 2,367 | 2,385 | +0.25% | 228,500 | 1664億3603万 | -1.77% |
| 08/23 | 2,347 | 2,392 | 2,337 | 2,379 | +0.76% | 230,400 | 1660億1732万 | -2.22% |
| 08/22 | 2,343 | 2,383 | 2,322 | 2,361 | +0.6% | 222,100 | 1647億6120万 | -3.08% |
| 08/21 | 2,338 | 2,352 | 2,320 | 2,347 | -0.55% | 114,600 | 1637億8422万 | -3.93% |
| 08/20 | 2,312 | 2,371 | 2,312 | 2,360 | +0.08% | 172,900 | 1646億9142万 | -3.71% |
| 08/17 | 2,301 | 2,367 | 2,301 | 2,358 | +1.95% | 217,000 | 1645億5185万 | -3.95% |
| 08/16 | 2,283 | 2,320 | 2,270 | 2,313 | -0.86% | 248,700 | 1614億1155万 | -5.78% |
| 08/15 | 2,402 | 2,402 | 2,326 | 2,333 | -2.87% | 183,700 | 1628億724万 | -5.01% |
| 08/14 | 2,352 | 2,404 | 2,350 | 2,402 | +0.97% | 113,000 | 1676億2237万 | -2.16% |
| 08/13 | 2,398 | 2,405 | 2,372 | 2,379 | -1.53% | 164,900 | 1660億1732万 | -2.98% |
| 08/10 | 2,435 | 2,439 | 2,407 | 2,416 | -1.39% | 100,200 | 1685億9935万 | -1.35% |
| 08/09 | 2,443 | 2,463 | 2,427 | 2,450 | -0.53% | 105,600 | 1709億7202万 | +0.37% |
| 08/08 | 2,450 | 2,478 | 2,448 | 2,463 | -0.16% | 124,800 | 1718億7922万 | +1.23% |
| 08/07 | 2,447 | 2,473 | 2,438 | 2,467 | -0.2% | 117,400 | 1721億5836万 | +1.69% |
| 08/06 | 2,483 | 2,492 | 2,458 | 2,472 | -0.44% | 98,200 | 1725億728万 | +2.23% |
| 08/03 | 2,521 | 2,538 | 2,480 | 2,483 | -1.39% | 131,100 | 1732億7491万 | +3.03% |
| 08/02 | 2,560 | 2,571 | 2,515 | 2,518 | -1.56% | 158,300 | 1757億1737万 | +4.96% |
| 08/01 | 2,512 | 2,564 | 2,497 | 2,558 | +2.77% | 625,400 | 1785億875万 | +7.16% |
| 07/27 | （IR情報）15:00 ストック・オプションの発行等に伴うアルプス電気株式会社とアルパイン株式会社の株式交換契約の一部変更(簡易株式交換)に関するお知らせ |
| 07/27 | （IR情報）15:00 アルプス電気株式会社とアルパイン株式会社との業務提携基本契約の締結に関するお知らせ |
| 07/27 | （IR情報）15:00 2019年3月期第1四半期決算短信〔日本基準〕(連結) |
