日本坩堝JP:5355
時価総額
¥42.6億
PER
10倍
耐火物事業、エンジニアリング事業、不動産事業、その他事業を展開し、黒鉛坩堝や工業炉設計、太陽光発電、塗料循環装置を手がける。
大株主
| （単位：千株） | 2016/03 | 2017/03 | 2018/03 | 2019/03 | 2020/03 | 2021/03 | 2022/03 | 2023/03 | 2024/03 | 2025/03 |
|---|---|---|---|---|---|---|---|---|---|---|
| SBI証券 | 27 1.98% | 215 3.15% | 487 7.14% | 133 1.98% | 346 5.14% | |||||
| 岡田民雄 | 641 4.55% | 654 4.64% | 656 4.86% | 66 4.85% | 66 4.85% | 66 4.8% | 328 4.8% | 328 4.8% | 328 4.87% | 328 4.87% |
| みずほ銀行 | 650 4.61% | 650 4.61% | 650 4.81% | 65 4.8% | 65 4.8% | 65 4.75% | 325 4.75% | 325 4.75% | 325 4.83% | 325 4.83% |
| 柏屋商事 | 550 3.9% | 550 3.9% | 550 4.07% | 55 4.06% | 55 4.06% | 55 4.02% | 275 4.02% | 275 4.02% | 275 4.08% | 275 4.08% |
| 美濃窯業 | 232 3.44% | |||||||||
| 野村證券 | 144 2.14% | 226 3.36% | ||||||||
| 野村信託銀行 | 432 3.07% | 432 3.07% | 432 3.2% | 43 3.19% | 43 3.19% | 43 3.16% | 216 3.16% | 216 3.16% | 216 3.21% | 216 3.21% |
| 野間一 | 420 3.11% | 42 3.1% | 42 3.1% | 42 3.07% | 210 3.08% | 210 3.07% | 210 3.12% | 210 3.12% | ||
| 日本坩堝従業員持株会 | 478 3.39% | 477 3.39% | 481 3.56% | 44 3.23% | 44 3.24% | 44 3.22% | 219 3.21% | 217 3.19% | 218 3.24% | 210 3.12% |
| 日本精鉱 | 254 1.8% | 254 1.8% | 254 1.88% | 25 1.87% | 25 1.87% | 25 1.86% | 127 1.86% | 127 1.86% | 127 1.88% | 127 1.88% |
| 上田八木短資 | 63 4.66% | 55 4.02% | 250 3.66% | 250 3.71% | ||||||
| 東京海上日動火災保険 | 280 1.99% | 280 1.99% | 280 2.07% | 28 2.07% | 28 2.07% | 28 2.05% | 140 2.05% | 134 1.97% | ||
| 三井住友海上火災保険 | 238 1.76% | 24 1.76% | 119 1.74% | |||||||
| 三菱UFJモルガン・スタンレー証券 | 25 1.84% | 25 1.83% | ||||||||
| ヒューリック | 238 1.76% | |||||||||
| 日本坩堝 | 571 4.06% | 572 4.06% | ||||||||
| 川島治男 | 340 2.41% | 286 2.03% | ||||||||
| 岡元富男 | 255 1.81% | 255 1.81% | ||||||||
| 計 | 4,452 31.6% | 4,410 31.3% | 4,200 31.07% | 420 31.05% | 455 33.65% | 448 32.82% | 2,306 33.78% | 2,441 35.75% | 2,227 33.11% | 2,496 37.1% |