7509 アイエーグループ(株) の時系列データ [2006年度]
日付 | 始値 | 高値 | 安値 | 終値 | 出来高 | 調整後終値 |
---|---|---|---|---|---|---|
2006-12-29 | 521 | 524 | 521 | 523 | 6,000 | 2,615 |
2006-12-28 | 526 | 526 | 521 | 521 | 3,000 | 2,605 |
2006-12-27 | 522 | 526 | 521 | 526 | 5,000 | 2,630 |
2006-12-26 | 526 | 526 | 520 | 526 | 11,000 | 2,630 |
2006-12-25 | 520 | 525 | 519 | 525 | 21,000 | 2,625 |
2006-12-22 | 521 | 521 | 520 | 521 | 9,000 | 2,605 |
2006-12-21 | 520 | 523 | 519 | 521 | 10,000 | 2,605 |
2006-12-20 | 517 | 517 | 516 | 516 | 3,000 | 2,580 |
2006-12-19 | 518 | 527 | 518 | 527 | 6,000 | 2,635 |
2006-12-18 | 527 | 529 | 514 | 528 | 24,000 | 2,640 |
2006-12-15 | 527 | 535 | 525 | 525 | 6,000 | 2,625 |
2006-12-14 | 524 | 525 | 524 | 524 | 6,000 | 2,620 |
2006-12-13 | 510 | 520 | 508 | 520 | 14,000 | 2,600 |
2006-12-12 | 500 | 508 | 500 | 508 | 9,000 | 2,540 |
2006-12-11 | 489 | 495 | 489 | 495 | 5,000 | 2,475 |
2006-12-08 | 485 | 485 | 481 | 485 | 16,000 | 2,425 |
2006-12-07 | 480 | 481 | 480 | 480 | 4,000 | 2,400 |
2006-12-06 | 481 | 481 | 477 | 478 | 7,000 | 2,390 |
2006-12-05 | 476 | 480 | 476 | 480 | 4,000 | 2,400 |
2006-12-04 | 473 | 479 | 472 | 475 | 13,000 | 2,375 |
2006-12-01 | 475 | 476 | 470 | 470 | 4,000 | 2,350 |
2006-11-30 | 467 | 470 | 466 | 470 | 10,000 | 2,350 |
2006-11-29 | 468 | 469 | 468 | 469 | 2,000 | 2,345 |
2006-11-28 | 466 | 466 | 466 | 466 | 1,000 | 2,330 |
2006-11-27 | 466 | 466 | 466 | 466 | 2,000 | 2,330 |
2006-11-24 | 463 | 464 | 463 | 464 | 2,000 | 2,320 |
2006-11-22 | 460 | 469 | 460 | 469 | 3,000 | 2,345 |
2006-11-21 | 469 | 469 | 469 | 469 | 2,000 | 2,345 |
2006-11-20 | 480 | 483 | 470 | 470 | 10,000 | 2,350 |
2006-11-16 | 481 | 481 | 480 | 480 | 2,000 | 2,400 |
2006-11-15 | 493 | 493 | 483 | 483 | 3,000 | 2,415 |
2006-11-14 | 473 | 484 | 473 | 484 | 3,000 | 2,420 |
2006-11-13 | 470 | 470 | 470 | 470 | 3,000 | 2,350 |
2006-11-10 | 471 | 471 | 470 | 470 | 6,000 | 2,350 |
2006-11-09 | 466 | 475 | 466 | 475 | 4,000 | 2,375 |
2006-11-08 | 460 | 490 | 460 | 466 | 17,000 | 2,330 |
2006-11-07 | 454 | 454 | 443 | 443 | 11,000 | 2,215 |
2006-11-06 | 439 | 455 | 439 | 455 | 17,000 | 2,275 |
2006-11-02 | 465 | 465 | 434 | 434 | 38,000 | 2,170 |
2006-11-01 | 470 | 470 | 463 | 465 | 17,000 | 2,325 |
2006-10-31 | 483 | 483 | 470 | 470 | 20,000 | 2,350 |
2006-10-30 | 489 | 489 | 477 | 483 | 21,000 | 2,415 |
2006-10-27 | 491 | 491 | 488 | 489 | 12,000 | 2,445 |
2006-10-26 | 489 | 490 | 488 | 488 | 10,000 | 2,440 |
2006-10-25 | 496 | 500 | 490 | 490 | 12,000 | 2,450 |
2006-10-24 | 496 | 498 | 492 | 495 | 42,000 | 2,475 |
2006-10-23 | 505 | 505 | 498 | 498 | 12,000 | 2,490 |
2006-10-20 | 508 | 510 | 506 | 510 | 9,000 | 2,550 |
2006-10-19 | 504 | 505 | 501 | 505 | 8,000 | 2,525 |
2006-10-18 | 503 | 503 | 503 | 503 | 1,000 | 2,515 |
2006-10-17 | 502 | 503 | 502 | 503 | 2,000 | 2,515 |
2006-10-16 | 503 | 503 | 502 | 502 | 3,000 | 2,510 |
2006-10-13 | 508 | 508 | 501 | 508 | 4,000 | 2,540 |
2006-10-12 | 503 | 509 | 502 | 502 | 9,000 | 2,510 |
2006-10-11 | 516 | 520 | 506 | 514 | 17,000 | 2,570 |
2006-10-10 | 516 | 516 | 510 | 510 | 7,000 | 2,550 |
2006-10-06 | 507 | 507 | 506 | 506 | 3,000 | 2,530 |
2006-10-05 | 519 | 519 | 510 | 510 | 12,000 | 2,550 |
2006-10-04 | 514 | 515 | 514 | 515 | 3,000 | 2,575 |
2006-10-03 | 517 | 517 | 514 | 514 | 5,000 | 2,570 |
2006-10-02 | 524 | 529 | 516 | 520 | 7,000 | 2,600 |
2006-09-29 | 518 | 520 | 511 | 520 | 5,000 | 2,600 |
2006-09-28 | 520 | 520 | 512 | 512 | 6,000 | 2,560 |
2006-09-27 | 515 | 519 | 510 | 519 | 10,000 | 2,595 |
2006-09-26 | 517 | 517 | 512 | 512 | 8,000 | 2,560 |
2006-09-25 | 776 | 786 | 776 | 786 | 10,000 | 2,620 |
2006-09-22 | 796 | 798 | 790 | 790 | 26,000 | 2,633.33 |
2006-09-21 | 804 | 804 | 792 | 796 | 11,000 | 2,653.33 |
2006-09-20 | 804 | 805 | 804 | 804 | 8,000 | 2,680 |
2006-09-19 | 790 | 805 | 790 | 805 | 26,000 | 2,683.33 |
2006-09-15 | 795 | 795 | 790 | 790 | 9,000 | 2,633.33 |
2006-09-14 | 797 | 800 | 796 | 796 | 55,000 | 2,653.33 |
2006-09-13 | 797 | 810 | 797 | 800 | 12,000 | 2,666.67 |
2006-09-12 | 797 | 805 | 795 | 795 | 14,000 | 2,650 |
2006-09-11 | 796 | 799 | 795 | 795 | 19,000 | 2,650 |
2006-09-08 | 795 | 796 | 795 | 795 | 21,000 | 2,650 |
2006-09-07 | 795 | 795 | 794 | 795 | 14,000 | 2,650 |
2006-09-06 | 799 | 799 | 795 | 795 | 7,000 | 2,650 |
2006-09-05 | 798 | 798 | 794 | 797 | 5,000 | 2,656.67 |
2006-09-04 | 799 | 800 | 799 | 800 | 7,000 | 2,666.67 |
2006-09-01 | 800 | 801 | 786 | 786 | 15,000 | 2,620 |
2006-08-31 | 793 | 800 | 793 | 793 | 17,000 | 2,643.33 |
2006-08-30 | 808 | 808 | 792 | 792 | 13,000 | 2,640 |
2006-08-29 | 804 | 806 | 803 | 803 | 5,000 | 2,676.67 |
2006-08-28 | 813 | 813 | 803 | 803 | 14,000 | 2,676.67 |
2006-08-25 | 813 | 818 | 810 | 810 | 23,000 | 2,700 |
2006-08-24 | 820 | 830 | 810 | 810 | 34,000 | 2,700 |
2006-08-23 | 810 | 810 | 805 | 807 | 16,000 | 2,690 |
2006-08-22 | 797 | 803 | 797 | 803 | 12,000 | 2,676.67 |
2006-08-21 | 801 | 803 | 796 | 796 | 39,000 | 2,653.33 |
2006-08-18 | 800 | 800 | 799 | 799 | 14,000 | 2,663.33 |
2006-08-17 | 802 | 805 | 800 | 800 | 32,000 | 2,666.67 |
2006-08-16 | 795 | 795 | 792 | 795 | 11,000 | 2,650 |
2006-08-15 | 785 | 796 | 785 | 786 | 27,000 | 2,620 |
2006-08-14 | 793 | 795 | 786 | 786 | 17,000 | 2,620 |
2006-08-11 | 783 | 801 | 783 | 796 | 51,000 | 2,653.33 |
2006-08-10 | 760 | 795 | 760 | 785 | 101,000 | 2,616.67 |
2006-08-09 | 820 | 820 | 820 | 820 | 13,000 | 2,733.33 |
2006-08-08 | 1,011 | 1,020 | 1,011 | 1,020 | 4,000 | 3,400 |
2006-08-07 | 1,005 | 1,008 | 1,005 | 1,008 | 3,000 | 3,360 |
2006-08-04 | 1,011 | 1,011 | 1,011 | 1,011 | 3,000 | 3,370 |
2006-08-03 | 1,016 | 1,020 | 1,010 | 1,020 | 8,000 | 3,400 |
2006-08-02 | 1,013 | 1,014 | 1,013 | 1,014 | 4,000 | 3,380 |
2006-08-01 | 1,020 | 1,020 | 1,020 | 1,020 | 1,000 | 3,400 |
2006-07-31 | 1,030 | 1,030 | 1,020 | 1,020 | 5,000 | 3,400 |
2006-07-27 | 1,030 | 1,030 | 1,030 | 1,030 | 3,000 | 3,433.33 |
2006-07-26 | 1,017 | 1,017 | 1,010 | 1,010 | 6,000 | 3,366.67 |
2006-07-25 | 1,020 | 1,020 | 1,020 | 1,020 | 1,000 | 3,400 |
2006-07-24 | 1,013 | 1,015 | 1,011 | 1,015 | 3,000 | 3,383.33 |
2006-07-21 | 1,008 | 1,045 | 1,005 | 1,045 | 5,000 | 3,483.33 |
2006-07-20 | 1,015 | 1,015 | 1,015 | 1,015 | 2,000 | 3,383.33 |
2006-07-19 | 1,003 | 1,010 | 1,000 | 1,006 | 5,000 | 3,353.33 |
2006-07-18 | 1,090 | 1,090 | 1,030 | 1,031 | 4,000 | 3,436.67 |
2006-07-14 | 1,080 | 1,090 | 1,080 | 1,090 | 2,000 | 3,633.33 |
2006-07-13 | 1,080 | 1,080 | 1,080 | 1,080 | 1,000 | 3,600 |
2006-07-12 | 1,055 | 1,061 | 1,055 | 1,061 | 2,000 | 3,536.67 |
2006-07-11 | 1,060 | 1,100 | 1,060 | 1,100 | 4,000 | 3,666.67 |
2006-07-10 | 1,080 | 1,080 | 1,060 | 1,060 | 3,000 | 3,533.33 |
2006-07-07 | 1,081 | 1,081 | 1,080 | 1,080 | 4,000 | 3,600 |
2006-07-06 | 1,081 | 1,081 | 1,081 | 1,081 | 1,000 | 3,603.33 |
2006-07-05 | 1,100 | 1,100 | 1,082 | 1,082 | 4,000 | 3,606.67 |
2006-07-04 | 1,100 | 1,100 | 1,100 | 1,100 | 1,000 | 3,666.67 |
2006-07-03 | 1,077 | 1,120 | 1,077 | 1,100 | 6,000 | 3,666.67 |
2006-06-30 | 1,047 | 1,060 | 1,047 | 1,060 | 2,000 | 3,533.33 |
2006-06-29 | 1,042 | 1,042 | 1,042 | 1,042 | 1,000 | 3,473.33 |
2006-06-28 | 1,060 | 1,060 | 1,060 | 1,060 | 1,000 | 3,533.33 |
2006-06-27 | 1,060 | 1,060 | 1,060 | 1,060 | 2,000 | 3,533.33 |
2006-06-26 | 1,060 | 1,060 | 1,060 | 1,060 | 1,000 | 3,533.33 |
2006-06-23 | 1,080 | 1,080 | 1,080 | 1,080 | 2,000 | 3,600 |
2006-06-19 | 1,100 | 1,100 | 1,100 | 1,100 | 1,000 | 3,666.67 |
2006-06-16 | 1,080 | 1,100 | 1,080 | 1,100 | 4,000 | 3,666.67 |
2006-06-15 | 1,030 | 1,058 | 1,030 | 1,054 | 7,000 | 3,513.33 |
2006-06-14 | 992 | 1,022 | 992 | 1,022 | 2,000 | 3,406.67 |
2006-06-13 | 1,027 | 1,027 | 1,012 | 1,012 | 4,000 | 3,373.33 |
2006-06-12 | 999 | 1,027 | 999 | 1,027 | 4,000 | 3,423.33 |
2006-06-09 | 992 | 1,000 | 981 | 1,000 | 11,000 | 3,333.33 |
2006-06-08 | 1,030 | 1,030 | 981 | 981 | 15,000 | 3,270 |
2006-06-07 | 1,055 | 1,055 | 1,030 | 1,030 | 9,000 | 3,433.33 |
2006-06-06 | 1,079 | 1,079 | 1,055 | 1,055 | 3,000 | 3,516.67 |
2006-06-02 | 1,060 | 1,070 | 1,047 | 1,070 | 7,000 | 3,566.67 |
2006-06-01 | 1,083 | 1,083 | 1,080 | 1,080 | 4,000 | 3,600 |
2006-05-31 | 1,102 | 1,102 | 1,082 | 1,082 | 4,000 | 3,606.67 |
2006-05-30 | 1,130 | 1,130 | 1,110 | 1,115 | 9,000 | 3,716.67 |
2006-05-29 | 1,180 | 1,180 | 1,165 | 1,165 | 2,000 | 3,883.33 |
2006-05-26 | 1,177 | 1,189 | 1,177 | 1,181 | 6,000 | 3,936.67 |
2006-05-25 | 1,180 | 1,180 | 1,177 | 1,177 | 2,000 | 3,923.33 |
2006-05-24 | 1,190 | 1,190 | 1,190 | 1,190 | 1,000 | 3,966.67 |
2006-05-23 | 1,181 | 1,181 | 1,181 | 1,181 | 2,000 | 3,936.67 |
2006-05-22 | 1,218 | 1,230 | 1,185 | 1,185 | 16,000 | 3,950 |
2006-05-19 | 1,133 | 1,133 | 1,133 | 1,133 | 1,000 | 3,776.67 |
2006-05-18 | 1,110 | 1,110 | 1,100 | 1,100 | 2,000 | 3,666.67 |
2006-05-15 | 1,175 | 1,175 | 1,175 | 1,175 | 1,000 | 3,916.67 |
2006-05-11 | 1,200 | 1,200 | 1,200 | 1,200 | 1,000 | 4,000 |
2006-05-10 | 1,200 | 1,200 | 1,200 | 1,200 | 4,000 | 4,000 |
2006-05-09 | 1,200 | 1,200 | 1,200 | 1,200 | 6,000 | 4,000 |
2006-05-08 | 1,200 | 1,200 | 1,200 | 1,200 | 2,000 | 4,000 |
2006-05-02 | 1,215 | 1,215 | 1,215 | 1,215 | 1,000 | 4,050 |
2006-05-01 | 1,215 | 1,215 | 1,215 | 1,215 | 1,000 | 4,050 |
2006-04-28 | 1,200 | 1,200 | 1,200 | 1,200 | 1,000 | 4,000 |
2006-04-27 | 1,210 | 1,219 | 1,201 | 1,202 | 4,000 | 4,006.67 |
2006-04-26 | 1,200 | 1,200 | 1,200 | 1,200 | 1,000 | 4,000 |
2006-04-25 | 1,180 | 1,194 | 1,171 | 1,194 | 3,000 | 3,980 |
2006-04-24 | 1,200 | 1,200 | 1,200 | 1,200 | 10,000 | 4,000 |
2006-04-21 | 1,200 | 1,200 | 1,198 | 1,200 | 11,000 | 4,000 |
2006-04-20 | 1,197 | 1,200 | 1,190 | 1,200 | 10,000 | 4,000 |
2006-04-19 | 1,181 | 1,200 | 1,181 | 1,200 | 11,000 | 4,000 |
2006-04-18 | 1,193 | 1,193 | 1,171 | 1,171 | 6,000 | 3,903.33 |
2006-04-17 | 1,200 | 1,200 | 1,193 | 1,200 | 8,000 | 4,000 |
2006-04-14 | 1,205 | 1,205 | 1,200 | 1,200 | 5,000 | 4,000 |
2006-04-13 | 1,199 | 1,220 | 1,199 | 1,200 | 6,000 | 4,000 |
2006-04-12 | 1,204 | 1,205 | 1,200 | 1,200 | 10,000 | 4,000 |
2006-04-11 | 1,230 | 1,230 | 1,215 | 1,230 | 11,000 | 4,100 |
2006-04-10 | 1,230 | 1,240 | 1,230 | 1,234 | 7,000 | 4,113.33 |
2006-04-06 | 1,230 | 1,238 | 1,210 | 1,238 | 9,000 | 4,126.67 |
2006-04-05 | 1,240 | 1,240 | 1,220 | 1,220 | 8,000 | 4,066.67 |
2006-04-04 | 1,248 | 1,248 | 1,235 | 1,235 | 5,000 | 4,116.67 |
2006-04-03 | 1,240 | 1,240 | 1,220 | 1,230 | 9,000 | 4,100 |
2006-03-31 | 1,220 | 1,220 | 1,220 | 1,220 | 3,000 | 4,066.67 |
2006-03-30 | 1,200 | 1,220 | 1,200 | 1,220 | 6,000 | 4,066.67 |
2006-03-29 | 1,195 | 1,210 | 1,191 | 1,200 | 6,000 | 4,000 |
2006-03-28 | 1,180 | 1,195 | 1,180 | 1,195 | 7,000 | 3,983.33 |
2006-03-27 | 1,184 | 1,195 | 1,180 | 1,195 | 16,000 | 3,983.33 |
2006-03-24 | 1,180 | 1,180 | 1,161 | 1,165 | 20,000 | 3,883.33 |
2006-03-23 | 1,161 | 1,189 | 1,161 | 1,189 | 7,000 | 3,963.33 |
2006-03-22 | 1,165 | 1,165 | 1,156 | 1,157 | 13,000 | 3,856.67 |
2006-03-20 | 1,170 | 1,180 | 1,161 | 1,172 | 23,000 | 3,906.67 |
2006-03-17 | 1,202 | 1,202 | 1,190 | 1,190 | 6,000 | 3,966.67 |
2006-03-16 | 1,226 | 1,226 | 1,180 | 1,208 | 12,000 | 4,026.67 |
2006-03-15 | 1,201 | 1,228 | 1,190 | 1,228 | 11,000 | 4,093.33 |
2006-03-14 | 1,206 | 1,220 | 1,200 | 1,200 | 5,000 | 4,000 |
2006-03-13 | 1,210 | 1,227 | 1,210 | 1,215 | 13,000 | 4,050 |
2006-03-10 | 1,168 | 1,191 | 1,168 | 1,191 | 6,000 | 3,970 |
2006-03-09 | 1,140 | 1,171 | 1,140 | 1,152 | 8,000 | 3,840 |
2006-03-08 | 1,131 | 1,135 | 1,131 | 1,135 | 3,000 | 3,783.33 |
2006-03-07 | 1,139 | 1,139 | 1,130 | 1,138 | 5,000 | 3,793.33 |
2006-03-06 | 1,155 | 1,155 | 1,130 | 1,130 | 10,000 | 3,766.67 |
2006-03-03 | 1,159 | 1,159 | 1,135 | 1,135 | 12,000 | 3,783.33 |
2006-03-02 | 1,159 | 1,159 | 1,121 | 1,134 | 12,000 | 3,780 |
2006-03-01 | 1,110 | 1,119 | 1,092 | 1,119 | 31,000 | 3,730 |
2006-02-28 | 1,189 | 1,189 | 1,160 | 1,167 | 15,000 | 3,890 |
2006-02-27 | 1,160 | 1,180 | 1,160 | 1,169 | 24,000 | 3,896.67 |
2006-02-24 | 1,111 | 1,130 | 1,111 | 1,130 | 25,000 | 3,766.67 |
2006-02-23 | 1,128 | 1,144 | 1,095 | 1,110 | 37,000 | 3,700 |
2006-02-22 | 1,060 | 1,070 | 1,041 | 1,068 | 35,000 | 3,560 |
2006-02-21 | 980 | 1,020 | 980 | 1,020 | 77,000 | 3,400 |
2006-02-20 | 1,050 | 1,050 | 980 | 995 | 74,000 | 3,316.67 |
2006-02-17 | 1,138 | 1,150 | 1,050 | 1,050 | 40,000 | 3,500 |
2006-02-16 | 1,189 | 1,189 | 1,135 | 1,150 | 21,000 | 3,833.33 |
2006-02-15 | 1,201 | 1,225 | 1,198 | 1,198 | 33,000 | 3,993.33 |
2006-02-14 | 1,226 | 1,230 | 1,125 | 1,190 | 31,000 | 3,966.67 |
2006-02-13 | 1,349 | 1,349 | 1,237 | 1,240 | 29,000 | 4,133.33 |
2006-02-10 | 1,400 | 1,400 | 1,351 | 1,360 | 20,000 | 4,533.33 |
2006-02-09 | 1,438 | 1,439 | 1,412 | 1,412 | 4,000 | 4,706.67 |
2006-02-08 | 1,470 | 1,470 | 1,410 | 1,425 | 54,000 | 4,750 |
2006-02-07 | 1,477 | 1,500 | 1,469 | 1,500 | 21,000 | 5,000 |
2006-02-06 | 1,446 | 1,465 | 1,446 | 1,465 | 7,000 | 4,883.33 |
2006-02-03 | 1,450 | 1,450 | 1,425 | 1,425 | 8,000 | 4,750 |
2006-02-02 | 1,488 | 1,489 | 1,470 | 1,470 | 6,000 | 4,900 |
2006-02-01 | 1,475 | 1,475 | 1,470 | 1,470 | 4,000 | 4,900 |
2006-01-31 | 1,474 | 1,490 | 1,469 | 1,475 | 13,000 | 4,916.67 |
2006-01-30 | 1,423 | 1,450 | 1,420 | 1,450 | 15,000 | 4,833.33 |
2006-01-27 | 1,360 | 1,378 | 1,360 | 1,370 | 8,000 | 4,566.67 |
2006-01-26 | 1,340 | 1,360 | 1,340 | 1,360 | 8,000 | 4,533.33 |
2006-01-25 | 1,320 | 1,320 | 1,320 | 1,320 | 1,000 | 4,400 |
2006-01-24 | 1,242 | 1,305 | 1,242 | 1,305 | 9,000 | 4,350 |
2006-01-23 | 1,274 | 1,285 | 1,255 | 1,255 | 10,000 | 4,183.33 |
2006-01-20 | 1,330 | 1,330 | 1,300 | 1,300 | 15,000 | 4,333.33 |
2006-01-19 | 1,216 | 1,310 | 1,216 | 1,302 | 26,000 | 4,340 |
2006-01-18 | 1,355 | 1,355 | 1,215 | 1,256 | 22,000 | 4,186.67 |
2006-01-17 | 1,416 | 1,416 | 1,400 | 1,400 | 7,000 | 4,666.67 |
2006-01-16 | 1,420 | 1,425 | 1,420 | 1,425 | 4,000 | 4,750 |
2006-01-13 | 1,420 | 1,426 | 1,420 | 1,426 | 4,000 | 4,753.33 |
2006-01-12 | 1,437 | 1,437 | 1,411 | 1,411 | 4,000 | 4,703.33 |
2006-01-11 | 1,440 | 1,440 | 1,440 | 1,440 | 3,000 | 4,800 |
2006-01-10 | 1,455 | 1,455 | 1,410 | 1,440 | 11,000 | 4,800 |
2006-01-06 | 1,400 | 1,469 | 1,400 | 1,460 | 10,000 | 4,866.67 |
2006-01-05 | 1,390 | 1,405 | 1,390 | 1,405 | 5,000 | 4,683.33 |
2006-01-04 | 1,372 | 1,372 | 1,371 | 1,371 | 3,000 | 4,570 |
分割・併合履歴 : [2017-09-27]1株→0.2株 [2006-09-26]1株→1.5株 [1999-09-27]1株→1.2株