6218 エンシュウ(株) の時系列データ [1987年度]
日付 | 始値 | 高値 | 安値 | 終値 | 出来高 | 調整後終値 |
---|---|---|---|---|---|---|
1987-12-28 | 510 | 510 | 490 | 490 | 50,000 | 4,900 |
1987-12-26 | 530 | 530 | 515 | 515 | 21,000 | 5,150 |
1987-12-25 | 535 | 535 | 519 | 530 | 22,000 | 5,300 |
1987-12-24 | 525 | 525 | 511 | 511 | 45,000 | 5,110 |
1987-12-23 | 527 | 530 | 511 | 525 | 53,000 | 5,250 |
1987-12-22 | 546 | 546 | 527 | 527 | 36,000 | 5,270 |
1987-12-21 | 527 | 553 | 527 | 548 | 29,000 | 5,480 |
1987-12-18 | 559 | 559 | 520 | 526 | 41,000 | 5,260 |
1987-12-17 | 560 | 575 | 560 | 560 | 96,000 | 5,600 |
1987-12-16 | 567 | 583 | 565 | 565 | 84,000 | 5,650 |
1987-12-15 | 520 | 561 | 520 | 561 | 72,000 | 5,610 |
1987-12-14 | 525 | 525 | 510 | 524 | 20,000 | 5,240 |
1987-12-11 | 520 | 521 | 520 | 521 | 16,000 | 5,210 |
1987-12-10 | 548 | 549 | 520 | 544 | 28,000 | 5,440 |
1987-12-09 | 549 | 554 | 543 | 549 | 46,000 | 5,490 |
1987-12-08 | 529 | 560 | 529 | 559 | 71,000 | 5,590 |
1987-12-07 | 521 | 525 | 520 | 525 | 14,000 | 5,250 |
1987-12-05 | 505 | 520 | 505 | 520 | 8,000 | 5,200 |
1987-12-04 | 495 | 499 | 495 | 499 | 7,000 | 4,990 |
1987-12-03 | 495 | 497 | 495 | 497 | 2,000 | 4,970 |
1987-12-02 | 484 | 500 | 484 | 493 | 10,000 | 4,930 |
1987-12-01 | 483 | 483 | 480 | 480 | 10,000 | 4,800 |
1987-11-30 | 494 | 499 | 488 | 488 | 16,000 | 4,880 |
1987-11-28 | 500 | 500 | 495 | 495 | 12,000 | 4,950 |
1987-11-27 | 494 | 500 | 494 | 495 | 18,000 | 4,950 |
1987-11-26 | 496 | 500 | 496 | 500 | 12,000 | 5,000 |
1987-11-25 | 495 | 500 | 494 | 494 | 25,000 | 4,940 |
1987-11-24 | 494 | 494 | 494 | 494 | 1,000 | 4,940 |
1987-11-20 | 500 | 504 | 493 | 493 | 12,000 | 4,930 |
1987-11-19 | 500 | 500 | 500 | 500 | 3,000 | 5,000 |
1987-11-18 | 496 | 504 | 496 | 504 | 17,000 | 5,040 |
1987-11-17 | 496 | 496 | 496 | 496 | 21,000 | 4,960 |
1987-11-16 | 493 | 500 | 493 | 496 | 10,000 | 4,960 |
1987-11-13 | 500 | 500 | 490 | 490 | 13,000 | 4,900 |
1987-11-12 | 472 | 480 | 470 | 470 | 25,000 | 4,700 |
1987-11-11 | 494 | 494 | 477 | 477 | 6,000 | 4,770 |
1987-11-10 | 505 | 505 | 494 | 494 | 17,000 | 4,940 |
1987-11-09 | 510 | 516 | 510 | 510 | 36,000 | 5,100 |
1987-11-07 | 531 | 542 | 520 | 520 | 12,000 | 5,200 |
1987-11-06 | 540 | 550 | 540 | 542 | 14,000 | 5,420 |
1987-11-05 | 550 | 555 | 540 | 540 | 33,000 | 5,400 |
1987-11-04 | 540 | 540 | 540 | 540 | 9,000 | 5,400 |
1987-11-02 | 570 | 570 | 555 | 560 | 9,000 | 5,600 |
1987-10-31 | 550 | 565 | 549 | 560 | 71,000 | 5,600 |
1987-10-30 | 522 | 550 | 522 | 550 | 16,000 | 5,500 |
1987-10-29 | 521 | 526 | 510 | 510 | 35,000 | 5,100 |
1987-10-28 | 547 | 547 | 531 | 531 | 9,000 | 5,310 |
1987-10-27 | 505 | 520 | 505 | 510 | 71,000 | 5,100 |
1987-10-26 | 570 | 570 | 521 | 521 | 133,000 | 5,210 |
1987-10-24 | 575 | 587 | 560 | 560 | 63,000 | 5,600 |
1987-10-23 | 579 | 590 | 579 | 585 | 145,000 | 5,850 |
1987-10-22 | 607 | 618 | 583 | 597 | 174,000 | 5,970 |
1987-10-21 | 620 | 620 | 595 | 597 | 238,000 | 5,970 |
1987-10-20 | 570 | 590 | 550 | 550 | 265,000 | 5,500 |
1987-10-19 | 602 | 650 | 580 | 640 | 600,000 | 6,400 |
1987-10-16 | 560 | 610 | 560 | 608 | 749,000 | 6,080 |
1987-10-15 | 552 | 559 | 545 | 545 | 54,000 | 5,450 |
1987-10-14 | 551 | 555 | 545 | 550 | 31,000 | 5,500 |
1987-10-13 | 560 | 570 | 540 | 540 | 45,000 | 5,400 |
1987-10-12 | 570 | 570 | 555 | 560 | 23,000 | 5,600 |
1987-10-09 | 572 | 572 | 565 | 565 | 50,000 | 5,650 |
1987-10-08 | 576 | 580 | 570 | 570 | 66,000 | 5,700 |
1987-10-07 | 574 | 580 | 565 | 570 | 99,000 | 5,700 |
1987-10-06 | 570 | 575 | 570 | 574 | 149,000 | 5,740 |
1987-10-05 | 550 | 580 | 540 | 580 | 62,000 | 5,800 |
1987-10-03 | 536 | 550 | 535 | 535 | 86,000 | 5,350 |
1987-10-02 | 548 | 555 | 534 | 534 | 51,000 | 5,340 |
1987-10-01 | 565 | 570 | 550 | 550 | 68,000 | 5,500 |
1987-09-30 | 580 | 580 | 560 | 565 | 83,000 | 5,650 |
1987-09-29 | 582 | 582 | 561 | 570 | 310,000 | 5,700 |
1987-09-28 | 550 | 590 | 550 | 590 | 283,000 | 5,900 |
1987-09-26 | 510 | 535 | 510 | 535 | 50,000 | 5,350 |
1987-09-25 | 510 | 511 | 510 | 510 | 38,000 | 5,100 |
1987-09-24 | 512 | 517 | 511 | 515 | 36,000 | 5,150 |
1987-09-22 | 513 | 515 | 511 | 511 | 42,000 | 5,110 |
1987-09-21 | 515 | 534 | 515 | 520 | 41,000 | 5,200 |
1987-09-18 | 510 | 515 | 503 | 511 | 44,000 | 5,110 |
1987-09-17 | 501 | 515 | 501 | 515 | 62,000 | 5,150 |
1987-09-16 | 510 | 515 | 500 | 501 | 75,000 | 5,010 |
1987-09-14 | 510 | 515 | 510 | 515 | 25,000 | 5,150 |
1987-09-11 | 520 | 535 | 510 | 510 | 26,000 | 5,100 |
1987-09-10 | 527 | 527 | 520 | 527 | 18,000 | 5,270 |
1987-09-09 | 538 | 540 | 500 | 500 | 37,000 | 5,000 |
1987-09-08 | 539 | 540 | 538 | 538 | 45,000 | 5,380 |
1987-09-07 | 540 | 540 | 538 | 538 | 30,000 | 5,380 |
1987-09-05 | 545 | 549 | 540 | 540 | 45,000 | 5,400 |
1987-09-04 | 537 | 546 | 537 | 540 | 64,000 | 5,400 |
1987-09-03 | 540 | 540 | 536 | 537 | 40,000 | 5,370 |
1987-09-02 | 540 | 541 | 536 | 539 | 43,000 | 5,390 |
1987-09-01 | 530 | 540 | 520 | 520 | 82,000 | 5,200 |
1987-08-31 | 539 | 539 | 520 | 520 | 60,000 | 5,200 |
1987-08-29 | 521 | 539 | 521 | 539 | 62,000 | 5,390 |
1987-08-28 | 530 | 530 | 520 | 521 | 80,000 | 5,210 |
1987-08-27 | 525 | 530 | 520 | 525 | 64,000 | 5,250 |
1987-08-26 | 525 | 530 | 521 | 525 | 62,000 | 5,250 |
1987-08-25 | 515 | 516 | 498 | 515 | 116,000 | 5,150 |
1987-08-24 | 506 | 518 | 505 | 510 | 39,000 | 5,100 |
1987-08-22 | 506 | 506 | 505 | 505 | 10,000 | 5,050 |
1987-08-21 | 511 | 512 | 498 | 498 | 36,000 | 4,980 |
1987-08-20 | 500 | 510 | 499 | 510 | 34,000 | 5,100 |
1987-08-19 | 517 | 517 | 509 | 515 | 26,000 | 5,150 |
1987-08-18 | 520 | 520 | 510 | 517 | 48,000 | 5,170 |
1987-08-17 | 520 | 521 | 520 | 520 | 19,000 | 5,200 |
1987-08-14 | 517 | 530 | 517 | 520 | 31,000 | 5,200 |
1987-08-13 | 497 | 517 | 497 | 512 | 17,000 | 5,120 |
1987-08-12 | 501 | 501 | 495 | 495 | 44,000 | 4,950 |
1987-08-11 | 500 | 503 | 498 | 498 | 46,000 | 4,980 |
1987-08-10 | 503 | 503 | 498 | 498 | 30,000 | 4,980 |
1987-08-07 | 499 | 499 | 498 | 498 | 2,000 | 4,980 |
1987-08-06 | 500 | 500 | 495 | 495 | 44,000 | 4,950 |
1987-08-05 | 500 | 501 | 495 | 500 | 28,000 | 5,000 |
1987-08-04 | 520 | 520 | 495 | 495 | 16,000 | 4,950 |
1987-08-03 | 515 | 520 | 505 | 515 | 119,000 | 5,150 |
1987-08-01 | 520 | 520 | 516 | 519 | 11,000 | 5,190 |
1987-07-31 | 521 | 522 | 521 | 521 | 5,000 | 5,210 |
1987-07-30 | 530 | 530 | 520 | 520 | 85,000 | 5,200 |
1987-07-29 | 525 | 548 | 525 | 525 | 70,000 | 5,250 |
1987-07-28 | 500 | 515 | 500 | 515 | 86,000 | 5,150 |
1987-07-27 | 510 | 520 | 510 | 510 | 32,000 | 5,100 |
1987-07-25 | 503 | 509 | 497 | 500 | 13,000 | 5,000 |
1987-07-24 | 491 | 500 | 491 | 500 | 26,000 | 5,000 |
1987-07-23 | 485 | 485 | 485 | 485 | 36,000 | 4,850 |
1987-07-22 | 500 | 505 | 485 | 505 | 58,000 | 5,050 |
1987-07-21 | 510 | 510 | 501 | 502 | 34,000 | 5,020 |
1987-07-20 | 510 | 522 | 510 | 512 | 16,000 | 5,120 |
1987-07-17 | 524 | 525 | 517 | 517 | 27,000 | 5,170 |
1987-07-16 | 525 | 530 | 525 | 525 | 10,000 | 5,250 |
1987-07-15 | 512 | 525 | 512 | 525 | 42,000 | 5,250 |
1987-07-14 | 515 | 520 | 502 | 510 | 27,000 | 5,100 |
1987-07-13 | 530 | 530 | 520 | 520 | 17,000 | 5,200 |
1987-07-10 | 510 | 533 | 503 | 530 | 12,000 | 5,300 |
1987-07-09 | 538 | 538 | 500 | 500 | 31,000 | 5,000 |
1987-07-08 | 540 | 541 | 525 | 525 | 58,000 | 5,250 |
1987-07-07 | 521 | 550 | 521 | 533 | 74,000 | 5,330 |
1987-07-06 | 509 | 515 | 509 | 515 | 54,000 | 5,150 |
1987-07-04 | 500 | 500 | 490 | 500 | 51,000 | 5,000 |
1987-07-03 | 510 | 520 | 507 | 510 | 86,000 | 5,100 |
1987-07-02 | 525 | 525 | 511 | 514 | 47,000 | 5,140 |
1987-07-01 | 525 | 525 | 513 | 520 | 57,000 | 5,200 |
1987-06-30 | 534 | 534 | 521 | 533 | 82,000 | 5,330 |
1987-06-29 | 542 | 542 | 534 | 535 | 33,000 | 5,350 |
1987-06-27 | 533 | 550 | 530 | 542 | 83,000 | 5,420 |
1987-06-26 | 552 | 595 | 552 | 563 | 84,000 | 5,630 |
1987-06-25 | 529 | 550 | 529 | 550 | 128,000 | 5,500 |
1987-06-24 | 551 | 554 | 525 | 529 | 147,000 | 5,290 |
1987-06-23 | 545 | 576 | 538 | 552 | 170,000 | 5,520 |
1987-06-22 | 589 | 589 | 565 | 565 | 119,000 | 5,650 |
1987-06-19 | 624 | 627 | 579 | 579 | 359,000 | 5,790 |
1987-06-18 | 610 | 650 | 609 | 614 | 1,759,000 | 6,140 |
1987-06-17 | 552 | 605 | 552 | 605 | 1,054,000 | 6,050 |
1987-06-16 | 510 | 540 | 508 | 533 | 386,000 | 5,330 |
1987-06-15 | 495 | 510 | 494 | 503 | 220,000 | 5,030 |
1987-06-12 | 480 | 500 | 480 | 490 | 68,000 | 4,900 |
1987-06-11 | 513 | 514 | 495 | 500 | 223,000 | 5,000 |
1987-06-10 | 484 | 520 | 481 | 515 | 727,000 | 5,150 |
1987-06-09 | 461 | 474 | 460 | 474 | 128,000 | 4,740 |
1987-06-08 | 450 | 459 | 449 | 459 | 34,000 | 4,590 |
1987-06-06 | 450 | 451 | 448 | 448 | 32,000 | 4,480 |
1987-06-05 | 450 | 450 | 446 | 450 | 51,000 | 4,500 |
1987-06-04 | 451 | 451 | 441 | 441 | 33,000 | 4,410 |
1987-06-03 | 450 | 450 | 441 | 441 | 39,000 | 4,410 |
1987-06-02 | 452 | 452 | 440 | 441 | 34,000 | 4,410 |
1987-06-01 | 460 | 460 | 445 | 457 | 49,000 | 4,570 |
1987-05-30 | 445 | 460 | 445 | 460 | 29,000 | 4,600 |
1987-05-29 | 459 | 460 | 440 | 440 | 75,000 | 4,400 |
1987-05-28 | 439 | 454 | 435 | 454 | 93,000 | 4,540 |
1987-05-27 | 439 | 440 | 433 | 433 | 16,000 | 4,330 |
1987-05-26 | 439 | 440 | 429 | 429 | 28,000 | 4,290 |
1987-05-25 | 435 | 440 | 435 | 438 | 20,000 | 4,380 |
1987-05-23 | 435 | 435 | 417 | 420 | 17,000 | 4,200 |
1987-05-22 | 420 | 430 | 420 | 428 | 38,000 | 4,280 |
1987-05-21 | 420 | 420 | 410 | 410 | 14,000 | 4,100 |
1987-05-20 | 430 | 430 | 418 | 423 | 37,000 | 4,230 |
1987-05-19 | 425 | 430 | 425 | 430 | 11,000 | 4,300 |
1987-05-18 | 430 | 430 | 430 | 430 | 8,000 | 4,300 |
1987-05-15 | 430 | 449 | 423 | 449 | 21,000 | 4,490 |
1987-05-14 | 430 | 435 | 423 | 427 | 14,000 | 4,270 |
1987-05-13 | 440 | 440 | 435 | 440 | 10,000 | 4,400 |
1987-05-12 | 430 | 435 | 430 | 435 | 19,000 | 4,350 |
1987-05-11 | 430 | 431 | 430 | 430 | 19,000 | 4,300 |
1987-05-08 | 445 | 450 | 431 | 431 | 41,000 | 4,310 |
1987-05-07 | 445 | 445 | 440 | 445 | 11,000 | 4,450 |
1987-05-06 | 450 | 450 | 445 | 445 | 27,000 | 4,450 |
1987-05-02 | 430 | 445 | 421 | 440 | 47,000 | 4,400 |
1987-05-01 | 433 | 438 | 427 | 430 | 15,000 | 4,300 |
1987-04-30 | 445 | 445 | 420 | 438 | 45,000 | 4,380 |
1987-04-28 | 442 | 448 | 437 | 440 | 58,000 | 4,400 |
1987-04-27 | 430 | 437 | 430 | 437 | 10,000 | 4,370 |
1987-04-25 | 435 | 438 | 430 | 438 | 29,000 | 4,380 |
1987-04-24 | 441 | 446 | 430 | 446 | 55,000 | 4,460 |
1987-04-23 | 450 | 450 | 436 | 436 | 47,000 | 4,360 |
1987-04-22 | 445 | 450 | 445 | 447 | 29,000 | 4,470 |
1987-04-21 | 476 | 479 | 475 | 479 | 23,000 | 4,790 |
1987-04-20 | 476 | 485 | 475 | 480 | 83,000 | 4,800 |
1987-04-17 | 450 | 481 | 450 | 475 | 206,000 | 4,750 |
1987-04-16 | 445 | 449 | 440 | 449 | 56,000 | 4,490 |
1987-04-15 | 460 | 460 | 434 | 435 | 70,000 | 4,350 |
1987-04-14 | 449 | 455 | 445 | 455 | 91,000 | 4,550 |
1987-04-13 | 465 | 470 | 429 | 429 | 56,000 | 4,290 |
1987-04-10 | 451 | 470 | 451 | 470 | 87,000 | 4,700 |
1987-04-09 | 490 | 501 | 464 | 464 | 306,000 | 4,640 |
1987-04-08 | 435 | 485 | 435 | 485 | 295,000 | 4,850 |
1987-04-07 | 420 | 440 | 420 | 430 | 126,000 | 4,300 |
1987-04-06 | 390 | 401 | 386 | 400 | 70,000 | 4,000 |
1987-04-04 | 370 | 370 | 370 | 370 | 17,000 | 3,700 |
1987-04-03 | 370 | 370 | 365 | 365 | 24,000 | 3,650 |
1987-04-02 | 365 | 370 | 365 | 370 | 9,000 | 3,700 |
1987-04-01 | 371 | 371 | 365 | 370 | 24,000 | 3,700 |
1987-03-31 | 372 | 372 | 370 | 370 | 13,000 | 3,700 |
1987-03-30 | 390 | 390 | 375 | 376 | 10,000 | 3,760 |
1987-03-28 | 365 | 395 | 365 | 395 | 24,000 | 3,950 |
1987-03-27 | 371 | 372 | 370 | 370 | 27,000 | 3,700 |
1987-03-26 | 375 | 379 | 372 | 372 | 19,000 | 3,720 |
1987-03-25 | 375 | 377 | 372 | 375 | 30,000 | 3,750 |
1987-03-24 | 374 | 375 | 374 | 374 | 11,000 | 3,740 |
1987-03-23 | 376 | 379 | 370 | 370 | 51,000 | 3,700 |
1987-03-20 | 378 | 378 | 375 | 375 | 30,000 | 3,750 |
1987-03-19 | 389 | 390 | 378 | 378 | 25,000 | 3,780 |
1987-03-18 | 385 | 385 | 378 | 378 | 16,000 | 3,780 |
1987-03-17 | 375 | 389 | 375 | 380 | 24,000 | 3,800 |
1987-03-16 | 371 | 371 | 370 | 370 | 39,000 | 3,700 |
1987-03-13 | 371 | 375 | 370 | 371 | 24,000 | 3,710 |
1987-03-12 | 380 | 390 | 371 | 371 | 38,000 | 3,710 |
1987-03-11 | 389 | 390 | 380 | 380 | 16,000 | 3,800 |
1987-03-10 | 390 | 395 | 380 | 390 | 26,000 | 3,900 |
1987-03-09 | 371 | 401 | 370 | 390 | 21,000 | 3,900 |
1987-03-07 | 380 | 381 | 370 | 370 | 41,000 | 3,700 |
1987-03-06 | 375 | 390 | 375 | 380 | 21,000 | 3,800 |
1987-03-05 | 385 | 390 | 380 | 390 | 64,000 | 3,900 |
1987-03-04 | 382 | 388 | 382 | 382 | 29,000 | 3,820 |
1987-03-03 | 385 | 393 | 381 | 381 | 33,000 | 3,810 |
1987-03-02 | 385 | 388 | 375 | 388 | 25,000 | 3,880 |
1987-02-28 | 390 | 390 | 385 | 385 | 22,000 | 3,850 |
1987-02-27 | 386 | 386 | 385 | 385 | 35,000 | 3,850 |
1987-02-26 | 400 | 400 | 390 | 396 | 65,000 | 3,960 |
1987-02-25 | 406 | 406 | 395 | 395 | 23,000 | 3,950 |
1987-02-24 | 403 | 415 | 395 | 414 | 19,000 | 4,140 |
1987-02-23 | 393 | 393 | 390 | 393 | 24,000 | 3,930 |
1987-02-20 | 385 | 388 | 385 | 388 | 45,000 | 3,880 |
1987-02-19 | 390 | 390 | 385 | 385 | 59,000 | 3,850 |
1987-02-18 | 396 | 396 | 390 | 391 | 24,000 | 3,910 |
1987-02-17 | 395 | 400 | 386 | 395 | 37,000 | 3,950 |
1987-02-16 | 395 | 395 | 390 | 395 | 3,000 | 3,950 |
1987-02-13 | 395 | 400 | 385 | 386 | 54,000 | 3,860 |
1987-02-12 | 386 | 386 | 380 | 385 | 23,000 | 3,850 |
1987-02-10 | 390 | 390 | 385 | 385 | 46,000 | 3,850 |
1987-02-09 | 390 | 391 | 390 | 390 | 10,000 | 3,900 |
1987-02-07 | 390 | 390 | 390 | 390 | 32,000 | 3,900 |
1987-02-06 | 395 | 395 | 385 | 390 | 53,000 | 3,900 |
1987-02-05 | 395 | 395 | 388 | 388 | 45,000 | 3,880 |
1987-02-04 | 398 | 400 | 393 | 393 | 55,000 | 3,930 |
1987-02-03 | 406 | 406 | 393 | 396 | 25,000 | 3,960 |
1987-02-02 | 395 | 405 | 392 | 405 | 62,000 | 4,050 |
1987-01-31 | 398 | 400 | 398 | 398 | 15,000 | 3,980 |
1987-01-30 | 398 | 405 | 398 | 398 | 40,000 | 3,980 |
1987-01-29 | 400 | 402 | 398 | 398 | 37,000 | 3,980 |
1987-01-28 | 402 | 405 | 398 | 399 | 32,000 | 3,990 |
1987-01-27 | 403 | 406 | 396 | 405 | 50,000 | 4,050 |
1987-01-24 | 404 | 412 | 402 | 402 | 8,000 | 4,020 |
1987-01-23 | 400 | 414 | 399 | 414 | 30,000 | 4,140 |
1987-01-22 | 419 | 419 | 402 | 410 | 29,000 | 4,100 |
1987-01-21 | 419 | 420 | 403 | 420 | 49,000 | 4,200 |
1987-01-20 | 410 | 411 | 409 | 411 | 23,000 | 4,110 |
1987-01-19 | 416 | 416 | 409 | 409 | 30,000 | 4,090 |
1987-01-16 | 421 | 434 | 421 | 434 | 16,000 | 4,340 |
1987-01-14 | 420 | 430 | 420 | 420 | 11,000 | 4,200 |
1987-01-13 | 415 | 420 | 415 | 420 | 18,000 | 4,200 |
1987-01-12 | 417 | 418 | 417 | 417 | 12,000 | 4,170 |
1987-01-09 | 411 | 415 | 411 | 415 | 26,000 | 4,150 |
1987-01-08 | 427 | 427 | 410 | 415 | 27,000 | 4,150 |
1987-01-07 | 431 | 431 | 427 | 427 | 50,000 | 4,270 |
1987-01-06 | 431 | 431 | 431 | 431 | 12,000 | 4,310 |
1987-01-05 | 427 | 435 | 427 | 430 | 10,000 | 4,300 |
分割・併合履歴 : [2018-09-26]1株→0.1株 [1984-03-28]1株→1.05株 [1983-03-28]1株→1.1株