| 2026 |
| 03/09 | 2,500 | 2,500 | 2,483 | 2,483 | -4.79% | 7,100 | 61億520万 | -5.16% |
| 03/06 | 2,550 | 2,608 | 2,550 | 2,608 | -1.58% | 1,100 | 64億1255万 | -0.38% |
| 03/05 | 2,544 | 2,650 | 2,537 | 2,650 | +7.46% | 5,700 | 65億1582万 | +1.15% |
| 03/04 | 2,545 | 2,545 | 2,426 | 2,466 | -5.55% | 5,000 | 60億6340万 | -5.91% |
| 03/03 | 2,675 | 2,675 | 2,561 | 2,611 | -2.54% | 5,500 | 64億1992万 | -0.72% |
| 03/02 | 2,660 | 2,689 | 2,660 | 2,679 | +0.45% | 2,400 | 65億8712万 | +1.67% |
| 02/27 | 2,662 | 2,668 | 2,652 | 2,667 | +0.49% | 2,400 | 65億5761万 | +1.14% |
| 02/26 | 2,700 | 2,700 | 2,653 | 2,654 | -1.15% | 3,500 | 65億2565万 | +0.68% |
| 02/25 | 2,722 | 2,722 | 2,685 | 2,685 | -1.32% | 3,600 | 66億187万 | +1.74% |
| 02/24 | 2,762 | 2,762 | 2,674 | 2,721 | +2.06% | 5,200 | 66億9039万 | +3.03% |
| 02/20 | 2,642 | 2,673 | 2,642 | 2,666 | +0.6% | 1,800 | 65億5516万 | +0.87% |
| 02/19 | 2,650 | 2,653 | 2,648 | 2,650 | +0.08% | 1,600 | 65億1582万 | +0.08% |
| 02/18 | 2,649 | 2,649 | 2,644 | 2,648 | +0.84% | 700 | 65億1090万 | -0.15% |
| 02/17 | 2,622 | 2,654 | 2,619 | 2,626 | -0.04% | 2,800 | 64億5680万 | -1.2% |
| 02/16 | 2,674 | 2,674 | 2,627 | 2,627 | +0.11% | 700 | 64億5926万 | -1.31% |
| 02/13 | 2,641 | 2,641 | 2,594 | 2,624 | -0.64% | 1,800 | 64億5189万 | -1.58% |
| 02/12 | 2,658 | 2,689 | 2,630 | 2,641 | -0.64% | 3,300 | 64億9369万 | -1.12% |
| 02/10 | 2,618 | 2,658 | 2,601 | 2,658 | +2.19% | 1,100 | 65億3549万 | -0.6% |
| 02/09 | 2,630 | 2,660 | 2,600 | 2,601 | -0.23% | 4,800 | 63億9533万 | -2.84% |
| 02/06 | 2,612 | 2,624 | 2,605 | 2,607 | -0.84% | 1,000 | 64億1009万 | -2.61% |
| 02/05 | 2,625 | 2,629 | 2,587 | 2,629 | +0.34% | 1,400 | 64億6418万 | -1.79% |
| 02/04 | 2,540 | 2,636 | 2,540 | 2,620 | +3.15% | 6,500 | 64億4205万 | -1.84% |
| 02/03 | 2,562 | 2,562 | 2,526 | 2,540 | -0.27% | 1,500 | 62億4535万 | -4.62% |
| 02/02 | 2,550 | 2,563 | 2,475 | 2,547 | -0.12% | 2,900 | 62億6256万 | -4.28% |
| 01/30 | 2,530 | 2,550 | 2,492 | 2,550 | +2.82% | 2,800 | 62億6994万 | -4.06% |
| 01/29 | 2,607 | 2,607 | 2,424 | 2,480 | -6.31% | 62,400 | 60億9782万 | -6.49% |
| 01/28 | 2,663 | 2,663 | 2,611 | 2,647 | -1.56% | 3,200 | 65億844万 | +0.08% |
| 01/27 | 2,675 | 2,692 | 2,675 | 2,689 | -0.15% | 2,800 | 66億1171万 | +2.2% |
| 01/26 | 2,699 | 2,699 | 2,669 | 2,693 | -1.32% | 3,800 | 66億2154万 | +3.02% |
| 01/23 | 2,741 | 2,741 | 2,705 | 2,729 | +0.55% | 2,100 | 67億1006万 | +5.08% |
| 01/22 | 2,659 | 2,776 | 2,630 | 2,714 | +1.92% | 5,800 | 66億7318万 | +5.15% |
| 01/21 | 2,664 | 2,668 | 2,650 | 2,663 | -1.88% | 3,500 | 65億4778万 | +3.54% |
| 01/20 | 2,732 | 2,732 | 2,703 | 2,714 | -0.66% | 2,400 | 66億7318万 | +6.02% |
| 01/19 | 2,774 | 2,774 | 2,700 | 2,732 | -1.51% | 3,700 | 67億1744万 | +7.26% |
| 01/16 | 2,778 | 2,778 | 2,730 | 2,774 | -0.5% | 3,900 | 68億2071万 | +9.56% |
| 01/15 | 2,750 | 2,788 | 2,727 | 2,788 | +0.72% | 1,700 | 68億5513万 | +10.81% |
| 01/14 | 2,757 | 2,780 | 2,756 | 2,768 | -1.07% | 3,200 | 68億595万 | +10.76% |
| 01/13 | 2,729 | 2,805 | 2,729 | 2,798 | +2.53% | 8,400 | 68億7972万 | +12.69% |
| 01/09 | 2,702 | 2,729 | 2,699 | 2,729 | +0.07% | 3,200 | 67億1006万 | +10.75% |
| 01/08 | 2,740 | 2,740 | 2,682 | 2,727 | -0.47% | 3,000 | 67億514万 | +11.35% |
| 01/07 | 2,712 | 2,740 | 2,699 | 2,740 | +0.92% | 1,900 | 67億3711万 | +12.57% |
| 01/06 | 2,742 | 2,742 | 2,670 | 2,715 | -0.98% | 5,500 | 66億7564万 | +12.33% |
| 01/05 | 2,630 | 2,766 | 2,629 | 2,742 | +5.54% | 7,900 | 67億4202万 | +14.25% |
| 2025 |
| 12/30 | 2,596 | 2,598 | 2,577 | 2,598 | +0.23% | 7,400 | 63億8796万 | +9.11% |
| 12/29 | 2,489 | 2,630 | 2,405 | 2,592 | +6.14% | 10,600 | 63億7320万 | +9.51% |
| 12/26 | 2,497 | 2,497 | 2,422 | 2,442 | -1.25% | 8,800 | 60億438万 | +3.83% |
| 12/25 | 2,500 | 2,500 | 2,400 | 2,473 | -0.72% | 6,700 | 60億8061万 | +5.59% |
| 12/24 | 2,497 | 2,497 | 2,410 | 2,491 | +0.93% | 4,100 | 61億2487万 | +6.86% |
| 12/23 | 2,432 | 2,468 | 2,390 | 2,468 | +3.52% | 9,200 | 60億6831万 | +6.43% |
| 12/22 | 2,337 | 2,384 | 2,337 | 2,384 | +3.47% | 5,600 | 58億6177万 | +3.2% |
| 12/19 | 2,313 | 2,323 | 2,290 | 2,304 | +0.09% | 5,100 | 56億6507万 | 0% |
| 12/18 | 2,277 | 2,302 | 2,253 | 2,302 | +1.1% | 3,700 | 56億6015万 | +0.04% |
| 12/17 | 2,271 | 2,277 | 2,223 | 2,277 | +0.26% | 2,800 | 55億9868万 | -0.96% |
| 12/16 | 2,340 | 2,340 | 2,271 | 2,271 | -2.57% | 5,200 | 55億8393万 | -1.13% |
| 12/15 | 2,379 | 2,379 | 2,320 | 2,331 | -5.97% | 16,400 | 57億3146万 | +1.57% |
| 12/12 | (IR情報)15:30 会長、社長および代表取締役の異動に関するお知らせ |
| 12/12 | (IR情報)15:30 2026年1月期配当予想の修正(増配)に関するお知らせ |
| 12/12 | (IR情報)15:30 2026年1月期第3四半期決算短信〔日本基準〕(非連結) |
| 12/12 | 2,367 | 2,480 | 2,358 | 2,479 | +5.18% | 11,100 | 60億9536万 | +8.3% |
| 12/11 | 2,383 | 2,383 | 2,342 | 2,357 | -1.05% | 4,100 | 57億9539万 | +3.47% |
| 12/10 | 2,380 | 2,389 | 2,380 | 2,382 | +0.21% | 1,800 | 58億5686万 | +4.89% |
| 12/09 | 2,386 | 2,386 | 2,372 | 2,377 | +0.08% | 600 | 58億4456万 | +5.04% |
| 12/08 | 2,351 | 2,375 | 2,348 | 2,375 | +1.06% | 1,800 | 58億3965万 | +5.18% |
| 12/05 | 2,363 | 2,363 | 2,343 | 2,350 | -0.55% | 1,400 | 57億7818万 | +4.31% |
| 12/04 | 2,340 | 2,363 | 2,335 | 2,363 | +1.03% | 2,000 | 58億1014万 | +5.02% |
| 12/03 | 2,310 | 2,345 | 2,310 | 2,339 | -0.38% | 400 | 57億5113万 | +4.09% |
| 12/02 | 2,349 | 2,349 | 2,322 | 2,348 | -0.21% | 1,300 | 57億7326万 | +4.59% |
| 12/01 | 2,358 | 2,388 | 2,341 | 2,353 | +1.86% | 18,500 | 57億8555万 | +4.86% |
| 11/28 | 2,300 | 2,310 | 2,300 | 2,310 | +0.52% | 1,200 | 56億7982万 | +3.03% |
| 11/27 | 2,257 | 2,299 | 2,257 | 2,298 | +2.04% | 3,000 | 56億5032万 | +2.54% |
| 11/26 | 2,292 | 2,292 | 2,252 | 2,252 | +0.31% | 3,400 | 55億3721万 | +0.49% |
| 11/25 | (5%ルール)太洋基礎工業取引先持株会理事長山崎祐二(5.06%) |
| 11/25 | 2,226 | 2,265 | 2,225 | 2,245 | +0.99% | 4,900 | 55億2000万 | +0.09% |
| 11/21 | 2,199 | 2,237 | 2,196 | 2,223 | +1% | 6,900 | 54億6591万 | -0.89% |
| 11/20 | 2,178 | 2,201 | 2,178 | 2,201 | +0.23% | 400 | 54億1181万 | -1.96% |
| 11/19 | 2,181 | 2,196 | 2,181 | 2,196 | -0.18% | 300 | 53億9952万 | -2.23% |
| 11/18 | 2,203 | 2,203 | 2,179 | 2,200 | -0.95% | 3,600 | 54億936万 | -2.14% |
| 11/17 | 2,243 | 2,243 | 2,221 | 2,221 | -0.98% | 1,400 | 54億6099万 | -1.33% |
| 11/14 | 2,240 | 2,246 | 2,233 | 2,243 | +0.13% | 1,400 | 55億1508万 | -0.4% |
| 11/13 | 2,221 | 2,248 | 2,221 | 2,240 | 0% | 1,300 | 55億771万 | -0.53% |
| 11/12 | 2,227 | 2,240 | 2,227 | 2,240 | +0.54% | 700 | 55億771万 | -0.58% |
| 11/11 | 2,230 | 2,233 | 2,206 | 2,228 | -0.04% | 2,000 | 54億7820万 | -1.07% |
| 11/10 | 2,220 | 2,232 | 2,207 | 2,229 | +2.72% | 1,600 | 54億8066万 | -1.07% |
| 11/07 | 2,202 | 2,210 | 2,166 | 2,170 | -1.68% | 1,800 | 53億3559万 | -3.73% |
| 11/06 | 2,181 | 2,220 | 2,181 | 2,207 | +1.47% | 1,600 | 54億2657万 | -2.35% |
| 11/05 | 2,234 | 2,234 | 2,115 | 2,175 | -1.18% | 3,600 | 53億4789万 | -3.97% |
| 11/04 | 2,215 | 2,220 | 2,201 | 2,201 | -1.39% | 4,200 | 54億1181万 | -3.13% |
| 10/31 | 2,233 | 2,233 | 2,231 | 2,232 | -0.98% | 1,700 | 54億8804万 | -1.98% |
| 10/29 | 2,231 | 2,259 | 2,231 | 2,254 | -0.92% | 1,200 | 55億4213万 | -1.23% |
| 10/28 | 2,286 | 2,286 | 2,269 | 2,275 | -0.52% | 2,100 | 55億9377万 | -0.35% |
| 10/27 | 2,289 | 2,312 | 2,212 | 2,287 | -0.69% | 8,000 | 56億2327万 | +0.22% |
| 10/24 | (IR情報)15:30 JICA事業に伴うハノイ建設大学来日のお知らせ |
| 10/24 | 2,292 | 2,321 | 2,291 | 2,303 | -0.69% | 7,700 | 56億6261万 | +0.92% |
| 10/23 | 2,306 | 2,319 | 2,301 | 2,319 | +1.13% | 2,600 | 57億195万 | +1.67% |
| 10/22 | 2,296 | 2,308 | 2,291 | 2,293 | -0.09% | 3,100 | 56億3802万 | +0.53% |
| 10/21 | 2,292 | 2,297 | 2,290 | 2,295 | -0.43% | 4,400 | 56億4294万 | +0.31% |
| 10/20 | 2,320 | 2,322 | 2,296 | 2,305 | +0.92% | 4,800 | 56億6753万 | +0.44% |
| 10/17 | 2,269 | 2,284 | 2,269 | 2,284 | +0.88% | 2,000 | 56億1589万 | -0.52% |
| 10/16 | 2,249 | 2,270 | 2,249 | 2,264 | -0.22% | 800 | 55億6672万 | -1.48% |
| 10/15 | 2,212 | 2,269 | 2,212 | 2,269 | +2.16% | 1,100 | 55億7901万 | -1.52% |
| 10/14 | (IR情報)15:30 「弧状推進機」製作契約のお知らせ |
| 10/14 | 2,213 | 2,249 | 2,212 | 2,221 | -0.89% | 5,100 | 54億6099万 | -3.89% |
| 10/10 | 2,278 | 2,278 | 2,241 | 2,241 | -1.88% | 1,700 | 55億1017万 | -3.24% |
| 10/09 | 2,231 | 2,284 | 2,231 | 2,284 | +2.42% | 2,500 | 56億1589万 | -1.38% |
| 10/08 | 2,250 | 2,255 | 2,229 | 2,230 | -0.89% | 1,600 | 54億8312万 | -3.63% |
| 10/07 | 2,265 | 2,269 | 2,250 | 2,250 | -0.49% | 2,300 | 55億3230万 | -2.68% |