| 2026 |
| 03/06 | 1,491 | 1,491 | 1,465 | 1,470 | -1.54% | 2,900 | 113億6604万 | -3.23% |
| 03/05 | 1,446 | 1,497 | 1,443 | 1,493 | +2.75% | 7,400 | 115億4387万 | -1.65% |
| 03/04 | 1,434 | 1,458 | 1,398 | 1,453 | 0% | 17,400 | 112億3459万 | -4.28% |
| 03/03 | (自社株買い)取締役会(2025年4月15日)での決議状況(取得期間2025年4月16日~2026年4月15日) |
| 03/03 | 1,503 | 1,520 | 1,453 | 1,453 | -3.33% | 17,700 | 112億3459万 | -4.41% |
| 03/02 | 1,511 | 1,523 | 1,501 | 1,503 | -1.76% | 5,700 | 116億2119万 | -1.25% |
| 02/27 | 1,513 | 1,540 | 1,497 | 1,530 | +2.34% | 14,800 | 118億2996万 | +0.53% |
| 02/26 | 1,500 | 1,519 | 1,491 | 1,495 | -0.27% | 5,400 | 115億5934万 | -1.97% |
| 02/25 | 1,510 | 1,521 | 1,499 | 1,499 | -0.07% | 5,800 | 115億9026万 | -2.03% |
| 02/24 | 1,529 | 1,529 | 1,500 | 1,500 | -1.9% | 13,000 | 115億9800万 | -2.41% |
| 02/20 | 1,541 | 1,541 | 1,517 | 1,529 | -1.86% | 11,500 | 118億2222万 | -0.2% |
| 02/19 | 1,584 | 1,584 | 1,535 | 1,558 | -1.83% | 7,600 | 120億4645万 | +2.03% |
| 02/18 | 1,584 | 1,607 | 1,532 | 1,587 | +4.41% | 26,800 | 122億7068万 | +4.27% |
| 02/17 | (IR情報)17:00 配当予想の修正に関するお知らせ |
| 02/17 | 1,534 | 1,535 | 1,510 | 1,520 | -1.17% | 5,100 | 117億5264万 | +0.33% |
| 02/16 | 1,531 | 1,553 | 1,530 | 1,538 | -0.26% | 5,000 | 118億9181万 | +1.72% |
| 02/13 | 1,577 | 1,577 | 1,508 | 1,542 | -2.96% | 11,400 | 119億2274万 | +2.32% |
| 02/12 | (IR情報)16:35 大型ドライドックのコンクリート壁補修工事における当社製品採用のお知らせ |
| 02/12 | 1,582 | 1,595 | 1,560 | 1,589 | +0.44% | 10,800 | 122億8614万 | +5.79% |
| 02/10 | 1,521 | 1,583 | 1,521 | 1,582 | +4.01% | 21,400 | 122億3202万 | +5.96% |
| 02/09 | 1,534 | 1,534 | 1,516 | 1,521 | +0.4% | 2,800 | 117億6037万 | +2.56% |
| 02/06 | 1,517 | 1,520 | 1,507 | 1,515 | -0.85% | 7,100 | 117億1398万 | +2.64% |
| 02/05 | 1,543 | 1,543 | 1,513 | 1,528 | -0.13% | 5,600 | 118億1449万 | +4.09% |
| 02/04 | 1,516 | 1,535 | 1,500 | 1,530 | +1.19% | 8,600 | 118億2996万 | +4.79% |
| 02/03 | (自社株買い)取締役会(2025年4月15日)での決議状況(取得期間2025年4月16日~2026年4月15日) |
| 02/03 | 1,511 | 1,539 | 1,501 | 1,512 | +0.8% | 12,100 | 116億9078万 | +4.2% |
| 02/02 | 1,518 | 1,548 | 1,500 | 1,500 | -1.19% | 9,300 | 115億9800万 | +3.88% |
| 01/30 | 1,554 | 1,557 | 1,478 | 1,518 | -0.2% | 12,100 | 117億3717万 | +5.64% |
| 01/29 | 1,483 | 1,578 | 1,447 | 1,521 | +6.89% | 40,000 | 117億6037万 | +6.51% |
| 01/28 | 1,520 | 1,520 | 1,410 | 1,423 | -5.64% | 16,000 | 110億263万 | +0.21% |
| 01/27 | 1,500 | 1,523 | 1,487 | 1,508 | +0.8% | 10,600 | 116億5985万 | +6.57% |
| 01/26 | 1,512 | 1,548 | 1,482 | 1,496 | -0.99% | 28,100 | 115億6707万 | +6.33% |
| 01/23 | 1,500 | 1,511 | 1,475 | 1,511 | +0.73% | 13,900 | 116億8305万 | +7.93% |
| 01/22 | 1,675 | 1,684 | 1,500 | 1,500 | -6.25% | 59,400 | 115億9800万 | +7.76% |
| 01/21 | 1,653 | 1,760 | 1,587 | 1,600 | -1.66% | 68,100 | 123億7120万 | +15.52% |
| 01/20 | 1,700 | 1,847 | 1,590 | 1,627 | -2.87% | 157,600 | 125億7996万 | +18.41% |
| 01/19 | 1,400 | 1,682 | 1,395 | 1,675 | +21.2% | 442,100 | 129億5110万 | +22.89% |
| 01/16 | 1,392 | 1,392 | 1,370 | 1,382 | -0.72% | 10,100 | 106億8562万 | +2.52% |
| 01/15 | 1,412 | 1,426 | 1,380 | 1,392 | -2.38% | 19,800 | 107億6294万 | +3.49% |
| 01/14 | (IR情報)16:00 2026年5月期第2四半期(中間期)決算短信〔日本基準〕(非連結) |
| 01/14 | 1,424 | 1,435 | 1,412 | 1,426 | +0.07% | 11,000 | 110億2583万 | +6.34% |
| 01/13 | 1,436 | 1,440 | 1,410 | 1,425 | -0.21% | 13,300 | 110億1810万 | +6.66% |
| 01/09 | 1,425 | 1,438 | 1,420 | 1,428 | +0.35% | 6,500 | 110億4129万 | +7.61% |
| 01/08 | 1,423 | 1,424 | 1,414 | 1,423 | +0.92% | 11,600 | 110億263万 | +7.88% |
| 01/07 | (自社株買い)取締役会(2025年4月15日)での決議状況(取得期間2025年4月16日~2026年4月15日) |
| 01/07 | 1,361 | 1,411 | 1,361 | 1,410 | +3.6% | 8,100 | 109億212万 | +7.47% |
| 01/06 | 1,332 | 1,361 | 1,332 | 1,361 | +1.19% | 7,100 | 105億2325万 | +4.29% |
| 01/05 | 1,337 | 1,345 | 1,327 | 1,345 | +0.6% | 6,300 | 103億9954万 | +3.46% |
| 2025 |
| 12/30 | 1,315 | 1,344 | 1,315 | 1,337 | +0.83% | 5,400 | 103億3768万 | +3.16% |
| 12/29 | 1,321 | 1,343 | 1,315 | 1,326 | +0.38% | 6,200 | 102億5263万 | +2.71% |
| 12/26 | 1,308 | 1,329 | 1,308 | 1,321 | +0.69% | 6,400 | 102億1397万 | +2.56% |
| 12/25 | 1,330 | 1,332 | 1,310 | 1,312 | -2.02% | 2,000 | 101億4438万 | +2.02% |
| 12/24 | 1,311 | 1,339 | 1,311 | 1,339 | +2.45% | 6,100 | 103億5314万 | +4.2% |
| 12/23 | 1,307 | 1,320 | 1,303 | 1,307 | +0.08% | 5,800 | 101億572万 | +1.87% |
| 12/22 | 1,325 | 1,330 | 1,287 | 1,306 | -1.36% | 9,200 | 100億9799万 | +1.63% |
| 12/19 | 1,295 | 1,324 | 1,288 | 1,324 | +2% | 9,100 | 102億3716万 | +2.8% |
| 12/18 | 1,288 | 1,312 | 1,288 | 1,298 | -0.76% | 5,400 | 100億3613万 | +0.39% |
| 12/17 | 1,286 | 1,322 | 1,286 | 1,308 | -0.46% | 4,800 | 101億1345万 | +0.77% |
| 12/16 | 1,322 | 1,322 | 1,294 | 1,314 | -0.68% | 3,300 | 101億5984万 | +1% |
| 12/15 | 1,301 | 1,323 | 1,300 | 1,323 | +1.22% | 4,000 | 102億2943万 | +1.46% |
| 12/12 | 1,297 | 1,328 | 1,297 | 1,307 | -2.32% | 6,100 | 101億572万 | +0.08% |
| 12/11 | 1,350 | 1,350 | 1,309 | 1,338 | -0.89% | 5,000 | 103億4541万 | +2.14% |
| 12/10 | 1,310 | 1,369 | 1,301 | 1,350 | +3.45% | 21,500 | 104億3820万 | +2.97% |
| 12/09 | 1,285 | 1,310 | 1,283 | 1,305 | +0.46% | 8,300 | 100億9026万 | -0.46% |
| 12/08 | 1,299 | 1,316 | 1,283 | 1,299 | -0.38% | 7,000 | 100億4386万 | -1.14% |
| 12/05 | 1,295 | 1,402 | 1,257 | 1,304 | +1.88% | 59,100 | 100億8252万 | -1.06% |
| 12/04 | 1,207 | 1,420 | 1,207 | 1,280 | +5.26% | 72,300 | 98億9696万 | -3.1% |
| 12/03 | 1,220 | 1,230 | 1,210 | 1,216 | -1.06% | 3,700 | 94億211万 | -8.23% |
| 12/02 | (自社株買い)取締役会(2025年4月15日)での決議状況(取得期間2025年4月16日~2026年4月15日) |
| 12/02 | 1,238 | 1,238 | 1,209 | 1,229 | -0.24% | 7,700 | 95億262万 | -7.73% |
| 12/01 | 1,241 | 1,248 | 1,226 | 1,232 | -1.28% | 4,100 | 95億2582万 | -7.99% |
| 11/28 | 1,233 | 1,249 | 1,222 | 1,248 | +1.22% | 7,700 | 96億4953万 | -7.14% |
| 11/27 | 1,243 | 1,248 | 1,220 | 1,233 | -0.64% | 9,200 | 95億3355万 | -8.67% |
| 11/26 | 1,222 | 1,246 | 1,220 | 1,241 | +1.55% | 9,700 | 95億9541万 | -8.48% |
| 11/25 | 1,251 | 1,271 | 1,200 | 1,222 | -1.93% | 20,000 | 94億4850万 | -10.21% |
| 11/21 | 1,260 | 1,271 | 1,241 | 1,246 | -2.12% | 11,100 | 96億3407万 | -8.78% |
| 11/20 | 1,268 | 1,296 | 1,266 | 1,273 | 0% | 8,700 | 98億4283万 | -7.01% |
| 11/19 | 1,296 | 1,296 | 1,260 | 1,273 | -1.55% | 11,900 | 98億4283万 | -7.35% |
| 11/18 | 1,340 | 1,340 | 1,293 | 1,293 | -4.93% | 21,000 | 99億9747万 | -5.76% |
| 11/17 | 1,388 | 1,388 | 1,350 | 1,360 | -2.16% | 12,900 | 105億1552万 | -1.02% |
| 11/14 | (IR情報)15:30 自己株式の取得状況及び取得終了に関するお知らせ |
| 11/14 | 1,420 | 1,421 | 1,386 | 1,390 | -4.14% | 13,600 | 107億4748万 | +1.24% |
| 11/13 | 1,418 | 1,450 | 1,414 | 1,450 | +2.47% | 23,500 | 112億1140万 | +5.76% |
| 11/12 | 1,386 | 1,417 | 1,382 | 1,415 | +2.09% | 18,600 | 109億4078万 | +3.66% |
| 11/11 | 1,400 | 1,400 | 1,383 | 1,386 | +0.29% | 7,800 | 107億1655万 | +1.84% |
| 11/10 | 1,383 | 1,393 | 1,380 | 1,382 | -0.07% | 8,900 | 106億8562万 | +1.69% |
| 11/07 | 1,382 | 1,391 | 1,380 | 1,383 | -1.07% | 8,200 | 106億9335万 | +1.92% |
| 11/06 | 1,392 | 1,410 | 1,392 | 1,398 | +2.19% | 11,300 | 108億933万 | +3.1% |
| 11/05 | (自社株買い)取締役会(2025年10月16日)での決議状況(取得期間2025年10月17日~2025年11月20日) |
| 11/05 | (IR情報)15:30 自己株式の取得状況に関するお知らせ |
| 11/05 | 1,360 | 1,368 | 1,331 | 1,368 | +0.59% | 14,700 | 105億7737万 | +0.74% |
| 11/04 | 1,399 | 1,399 | 1,339 | 1,360 | -1.31% | 14,700 | 105億1552万 | -0.07% |
| 10/31 | 1,395 | 1,405 | 1,372 | 1,378 | -1.15% | 19,000 | 106億5469万 | +0.88% |
| 10/30 | 1,365 | 1,430 | 1,365 | 1,394 | +2.12% | 35,100 | 107億7840万 | +1.83% |
| 10/29 | 1,384 | 1,384 | 1,356 | 1,365 | -1.37% | 14,400 | 105億5418万 | -0.58% |
| 10/28 | 1,392 | 1,395 | 1,374 | 1,384 | -0.79% | 13,800 | 107億108万 | +0.36% |
| 10/27 | 1,402 | 1,415 | 1,381 | 1,395 | -0.36% | 19,100 | 107億8614万 | +0.79% |
| 10/24 | 1,366 | 1,404 | 1,361 | 1,400 | +2.94% | 18,000 | 108億2480万 | +0.79% |
| 10/23 | 1,412 | 1,418 | 1,360 | 1,360 | -3.68% | 31,600 | 105億1552万 | -2.37% |
| 10/22 | 1,370 | 1,429 | 1,370 | 1,412 | +3.07% | 48,400 | 109億1758万 | +0.79% |
| 10/21 | 1,381 | 1,402 | 1,337 | 1,370 | -0.22% | 44,600 | 105億9284万 | -2.49% |
| 10/20 | (5%ルール)鳴本聡一郎(4.66%)極東 HD(13.9%) |
| 10/20 | 1,361 | 1,385 | 1,325 | 1,373 | +1.85% | 66,400 | 106億1603万 | -2.76% |
| 10/17 | 1,433 | 1,492 | 1,322 | 1,348 | +2.67% | 379,900 | 104億2273万 | -4.87% |
| 10/16 | (IR情報)18:00 自己株式の取得に係る事項の決定に関するお知らせ |
| 10/16 | (IR情報)18:00 資本業務提携に関するお知らせ |
| 10/16 | 1,381 | 1,400 | 1,275 | 1,313 | -6.95% | 62,700 | 101億5211万 | -7.86% |
| 10/15 | 1,355 | 1,424 | 1,350 | 1,411 | +15.37% | 123,200 | 109億985万 | -1.6% |
| 10/14 | (IR情報)16:00 2026年5月期第1四半期決算短信〔日本基準〕(非連結) |
| 10/14 | 1,288 | 1,289 | 1,201 | 1,223 | -8.46% | 61,900 | 94億5623万 | -14.95% |
| 10/10 | 1,328 | 1,336 | 1,302 | 1,336 | +0.6% | 24,000 | 103億2995万 | -7.8% |
| 10/09 | 1,340 | 1,340 | 1,313 | 1,328 | -0.52% | 10,800 | 102億6809万 | -8.85% |
| 10/08 | 1,306 | 1,348 | 1,306 | 1,335 | +2.61% | 13,500 | 103億2222万 | -8.69% |
| 10/07 | 1,323 | 1,337 | 1,292 | 1,301 | -1.51% | 17,300 | 100億5933万 | -11.26% |
| 10/02 | (自社株買い)取締役会(2025年7月18日)での決議状況(取得期間2025年7月22日~2026年5月20日) |