5482 愛知製鋼(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 | 535 | 540 | 509 | 527 | 193,000 | 5,270 |
1987-12-26 | 560 | 560 | 540 | 540 | 140,000 | 5,400 |
1987-12-25 | 601 | 601 | 577 | 580 | 180,000 | 5,800 |
1987-12-24 | 612 | 612 | 599 | 610 | 84,000 | 6,100 |
1987-12-23 | 610 | 610 | 605 | 608 | 135,000 | 6,080 |
1987-12-22 | 620 | 620 | 606 | 607 | 206,000 | 6,070 |
1987-12-21 | 635 | 635 | 615 | 616 | 100,000 | 6,160 |
1987-12-18 | 625 | 625 | 615 | 615 | 166,000 | 6,150 |
1987-12-17 | 640 | 644 | 625 | 630 | 242,000 | 6,300 |
1987-12-16 | 641 | 642 | 626 | 642 | 486,000 | 6,420 |
1987-12-15 | 640 | 640 | 614 | 615 | 512,000 | 6,150 |
1987-12-14 | 650 | 652 | 633 | 635 | 846,000 | 6,350 |
1987-12-11 | 632 | 654 | 627 | 640 | 2,923,000 | 6,400 |
1987-12-10 | 618 | 627 | 602 | 627 | 632,000 | 6,270 |
1987-12-09 | 620 | 627 | 609 | 612 | 587,000 | 6,120 |
1987-12-08 | 620 | 632 | 610 | 613 | 655,000 | 6,130 |
1987-12-07 | 560 | 610 | 560 | 610 | 833,000 | 6,100 |
1987-12-05 | 560 | 575 | 560 | 575 | 72,000 | 5,750 |
1987-12-04 | 565 | 566 | 552 | 565 | 240,000 | 5,650 |
1987-12-03 | 580 | 590 | 560 | 565 | 115,000 | 5,650 |
1987-12-02 | 560 | 585 | 560 | 580 | 242,000 | 5,800 |
1987-12-01 | 550 | 562 | 545 | 560 | 211,000 | 5,600 |
1987-11-30 | 565 | 565 | 550 | 551 | 219,000 | 5,510 |
1987-11-28 | 571 | 580 | 571 | 573 | 112,000 | 5,730 |
1987-11-27 | 600 | 600 | 571 | 590 | 227,000 | 5,900 |
1987-11-26 | 606 | 606 | 590 | 600 | 265,000 | 6,000 |
1987-11-25 | 601 | 605 | 585 | 596 | 316,000 | 5,960 |
1987-11-24 | 582 | 593 | 581 | 581 | 311,000 | 5,810 |
1987-11-20 | 590 | 598 | 581 | 581 | 213,000 | 5,810 |
1987-11-19 | 574 | 595 | 574 | 585 | 126,000 | 5,850 |
1987-11-18 | 560 | 572 | 560 | 560 | 57,000 | 5,600 |
1987-11-17 | 557 | 560 | 555 | 560 | 145,000 | 5,600 |
1987-11-16 | 545 | 562 | 541 | 560 | 171,000 | 5,600 |
1987-11-13 | 551 | 556 | 548 | 555 | 153,000 | 5,550 |
1987-11-12 | 560 | 560 | 531 | 540 | 53,000 | 5,400 |
1987-11-11 | 545 | 550 | 530 | 530 | 140,000 | 5,300 |
1987-11-10 | 545 | 555 | 541 | 541 | 154,000 | 5,410 |
1987-11-09 | 560 | 564 | 535 | 545 | 132,000 | 5,450 |
1987-11-07 | 567 | 570 | 558 | 570 | 94,000 | 5,700 |
1987-11-06 | 580 | 580 | 565 | 565 | 158,000 | 5,650 |
1987-11-05 | 596 | 599 | 570 | 570 | 148,000 | 5,700 |
1987-11-04 | 617 | 619 | 593 | 596 | 277,000 | 5,960 |
1987-11-02 | 581 | 619 | 580 | 619 | 506,000 | 6,190 |
1987-10-31 | 567 | 580 | 561 | 580 | 164,000 | 5,800 |
1987-10-30 | 565 | 567 | 549 | 549 | 171,000 | 5,490 |
1987-10-29 | 550 | 550 | 530 | 535 | 121,000 | 5,350 |
1987-10-28 | 570 | 570 | 540 | 540 | 154,000 | 5,400 |
1987-10-27 | 520 | 570 | 520 | 560 | 182,000 | 5,600 |
1987-10-26 | 570 | 570 | 520 | 529 | 140,000 | 5,290 |
1987-10-24 | 566 | 566 | 555 | 560 | 123,000 | 5,600 |
1987-10-23 | 570 | 575 | 546 | 546 | 219,000 | 5,460 |
1987-10-22 | 603 | 605 | 590 | 590 | 278,000 | 5,900 |
1987-10-21 | 530 | 575 | 530 | 573 | 368,000 | 5,730 |
1987-10-20 | 520 | 520 | 520 | 520 | 130,000 | 5,200 |
1987-10-19 | 631 | 631 | 620 | 620 | 163,000 | 6,200 |
1987-10-16 | 635 | 644 | 626 | 644 | 109,000 | 6,440 |
1987-10-15 | 635 | 649 | 635 | 645 | 183,000 | 6,450 |
1987-10-14 | 639 | 645 | 630 | 635 | 151,000 | 6,350 |
1987-10-13 | 639 | 650 | 633 | 649 | 109,000 | 6,490 |
1987-10-12 | 650 | 650 | 629 | 629 | 265,000 | 6,290 |
1987-10-09 | 630 | 645 | 628 | 631 | 244,000 | 6,310 |
1987-10-08 | 639 | 645 | 630 | 634 | 197,000 | 6,340 |
1987-10-07 | 629 | 640 | 629 | 629 | 180,000 | 6,290 |
1987-10-06 | 628 | 655 | 627 | 649 | 528,000 | 6,490 |
1987-10-05 | 625 | 635 | 625 | 627 | 118,000 | 6,270 |
1987-10-03 | 630 | 635 | 630 | 630 | 130,000 | 6,300 |
1987-10-02 | 617 | 630 | 617 | 630 | 337,000 | 6,300 |
1987-10-01 | 625 | 633 | 615 | 615 | 273,000 | 6,150 |
1987-09-30 | 624 | 634 | 620 | 634 | 335,000 | 6,340 |
1987-09-29 | 626 | 643 | 625 | 626 | 354,000 | 6,260 |
1987-09-28 | 625 | 625 | 616 | 622 | 811,000 | 6,220 |
1987-09-26 | 616 | 620 | 602 | 615 | 425,000 | 6,150 |
1987-09-25 | 655 | 660 | 636 | 636 | 470,000 | 6,360 |
1987-09-24 | 680 | 680 | 640 | 650 | 982,000 | 6,500 |
1987-09-22 | 670 | 680 | 661 | 680 | 807,000 | 6,800 |
1987-09-21 | 665 | 680 | 665 | 670 | 749,000 | 6,700 |
1987-09-18 | 670 | 674 | 650 | 660 | 567,000 | 6,600 |
1987-09-17 | 675 | 675 | 645 | 660 | 1,753,000 | 6,600 |
1987-09-16 | 640 | 643 | 632 | 632 | 206,000 | 6,320 |
1987-09-14 | 631 | 640 | 625 | 640 | 555,000 | 6,400 |
1987-09-11 | 620 | 625 | 609 | 622 | 345,000 | 6,220 |
1987-09-10 | 621 | 626 | 600 | 610 | 295,000 | 6,100 |
1987-09-09 | 635 | 635 | 610 | 627 | 427,000 | 6,270 |
1987-09-08 | 631 | 645 | 630 | 640 | 417,000 | 6,400 |
1987-09-07 | 659 | 659 | 630 | 630 | 174,000 | 6,300 |
1987-09-05 | 674 | 674 | 650 | 660 | 230,000 | 6,600 |
1987-09-04 | 655 | 684 | 650 | 671 | 757,000 | 6,710 |
1987-09-03 | 652 | 668 | 630 | 651 | 635,000 | 6,510 |
1987-09-02 | 680 | 680 | 648 | 652 | 541,000 | 6,520 |
1987-09-01 | 695 | 696 | 680 | 680 | 795,000 | 6,800 |
1987-08-31 | 682 | 700 | 678 | 687 | 1,024,000 | 6,870 |
1987-08-29 | 698 | 698 | 672 | 672 | 684,000 | 6,720 |
1987-08-28 | 700 | 709 | 682 | 694 | 3,718,000 | 6,940 |
1987-08-27 | 731 | 731 | 703 | 712 | 3,815,000 | 7,120 |
1987-08-26 | 703 | 733 | 695 | 721 | 15,137,000 | 7,210 |
1987-08-25 | 692 | 709 | 676 | 698 | 8,421,000 | 6,980 |
1987-08-24 | 700 | 700 | 680 | 689 | 10,574,000 | 6,890 |
1987-08-22 | 649 | 674 | 645 | 670 | 6,694,000 | 6,700 |
1987-08-21 | 599 | 645 | 596 | 645 | 1,308,000 | 6,450 |
1987-08-20 | 590 | 600 | 590 | 595 | 174,000 | 5,950 |
1987-08-19 | 600 | 600 | 585 | 589 | 104,000 | 5,890 |
1987-08-18 | 613 | 613 | 594 | 610 | 218,000 | 6,100 |
1987-08-17 | 600 | 605 | 585 | 596 | 156,000 | 5,960 |
1987-08-14 | 615 | 615 | 585 | 600 | 191,000 | 6,000 |
1987-08-13 | 610 | 615 | 600 | 600 | 329,000 | 6,000 |
1987-08-12 | 591 | 604 | 590 | 600 | 306,000 | 6,000 |
1987-08-11 | 599 | 600 | 576 | 581 | 164,000 | 5,810 |
1987-08-10 | 598 | 600 | 585 | 600 | 340,000 | 6,000 |
1987-08-07 | 590 | 599 | 581 | 599 | 267,000 | 5,990 |
1987-08-06 | 584 | 590 | 570 | 570 | 471,000 | 5,700 |
1987-08-05 | 575 | 585 | 570 | 584 | 103,000 | 5,840 |
1987-08-04 | 581 | 590 | 564 | 580 | 114,000 | 5,800 |
1987-08-03 | 595 | 595 | 580 | 586 | 168,000 | 5,860 |
1987-08-01 | 591 | 596 | 585 | 585 | 236,000 | 5,850 |
1987-07-31 | 604 | 620 | 580 | 580 | 384,000 | 5,800 |
1987-07-30 | 617 | 620 | 585 | 614 | 428,000 | 6,140 |
1987-07-29 | 649 | 649 | 611 | 612 | 4,004,000 | 6,120 |
1987-07-28 | 615 | 648 | 605 | 640 | 3,511,000 | 6,400 |
1987-07-27 | 620 | 620 | 600 | 613 | 261,000 | 6,130 |
1987-07-25 | 620 | 620 | 601 | 619 | 842,000 | 6,190 |
1987-07-24 | 590 | 630 | 588 | 619 | 1,819,000 | 6,190 |
1987-07-23 | 540 | 565 | 536 | 560 | 262,000 | 5,600 |
1987-07-22 | 558 | 558 | 535 | 540 | 178,000 | 5,400 |
1987-07-21 | 548 | 560 | 542 | 548 | 328,000 | 5,480 |
1987-07-20 | 585 | 589 | 558 | 558 | 274,000 | 5,580 |
1987-07-17 | 600 | 601 | 585 | 585 | 221,000 | 5,850 |
1987-07-16 | 620 | 620 | 595 | 595 | 278,000 | 5,950 |
1987-07-15 | 634 | 634 | 606 | 628 | 610,000 | 6,280 |
1987-07-14 | 620 | 636 | 620 | 632 | 2,523,000 | 6,320 |
1987-07-13 | 617 | 620 | 602 | 617 | 1,193,000 | 6,170 |
1987-07-10 | 580 | 618 | 580 | 618 | 3,077,000 | 6,180 |
1987-07-09 | 550 | 589 | 540 | 582 | 1,095,000 | 5,820 |
1987-07-08 | 550 | 550 | 535 | 540 | 126,000 | 5,400 |
1987-07-07 | 541 | 545 | 526 | 545 | 126,000 | 5,450 |
1987-07-06 | 556 | 558 | 540 | 541 | 437,000 | 5,410 |
1987-07-04 | 562 | 562 | 555 | 556 | 379,000 | 5,560 |
1987-07-03 | 546 | 565 | 538 | 560 | 702,000 | 5,600 |
1987-07-02 | 549 | 550 | 535 | 536 | 160,000 | 5,360 |
1987-07-01 | 540 | 545 | 520 | 540 | 293,000 | 5,400 |
1987-06-30 | 555 | 555 | 500 | 500 | 209,000 | 5,000 |
1987-06-29 | 564 | 566 | 546 | 547 | 734,000 | 5,470 |
1987-06-27 | 549 | 558 | 531 | 558 | 770,000 | 5,580 |
1987-06-26 | 559 | 568 | 536 | 555 | 579,000 | 5,550 |
1987-06-25 | 521 | 566 | 521 | 560 | 901,000 | 5,600 |
1987-06-24 | 537 | 537 | 511 | 515 | 403,000 | 5,150 |
1987-06-23 | 550 | 560 | 537 | 537 | 234,000 | 5,370 |
1987-06-22 | 565 | 580 | 535 | 541 | 360,000 | 5,410 |
1987-06-19 | 600 | 620 | 573 | 573 | 317,000 | 5,730 |
1987-06-18 | 596 | 604 | 581 | 596 | 385,000 | 5,960 |
1987-06-17 | 624 | 624 | 595 | 595 | 284,000 | 5,950 |
1987-06-16 | 615 | 630 | 610 | 614 | 245,000 | 6,140 |
1987-06-15 | 640 | 640 | 615 | 615 | 229,000 | 6,150 |
1987-06-12 | 658 | 668 | 638 | 642 | 2,506,000 | 6,420 |
1987-06-11 | 639 | 658 | 625 | 658 | 1,182,000 | 6,580 |
1987-06-10 | 660 | 660 | 630 | 634 | 782,000 | 6,340 |
1987-06-09 | 675 | 679 | 643 | 650 | 3,673,000 | 6,500 |
1987-06-08 | 657 | 685 | 650 | 675 | 4,706,000 | 6,750 |
1987-06-06 | 660 | 668 | 640 | 667 | 758,000 | 6,670 |
1987-06-05 | 670 | 672 | 645 | 670 | 1,755,000 | 6,700 |
1987-06-04 | 675 | 680 | 640 | 665 | 2,478,000 | 6,650 |
1987-06-03 | 630 | 672 | 611 | 655 | 2,822,000 | 6,550 |
1987-06-02 | 679 | 679 | 630 | 635 | 1,301,000 | 6,350 |
1987-06-01 | 685 | 693 | 651 | 669 | 6,542,000 | 6,690 |
1987-05-30 | 690 | 692 | 664 | 665 | 5,230,000 | 6,650 |
1987-05-29 | 645 | 696 | 635 | 683 | 23,027,000 | 6,830 |
1987-05-28 | 630 | 660 | 623 | 640 | 18,809,000 | 6,400 |
1987-05-27 | 568 | 609 | 558 | 592 | 25,156,000 | 5,920 |
1987-05-26 | 520 | 563 | 509 | 558 | 5,335,000 | 5,580 |
1987-05-25 | 540 | 540 | 518 | 520 | 1,432,000 | 5,200 |
1987-05-23 | 540 | 552 | 505 | 520 | 4,063,000 | 5,200 |
1987-05-22 | 470 | 535 | 470 | 530 | 8,463,000 | 5,300 |
1987-05-21 | 480 | 480 | 460 | 460 | 306,000 | 4,600 |
1987-05-20 | 484 | 495 | 452 | 472 | 418,000 | 4,720 |
1987-05-19 | 491 | 503 | 481 | 490 | 831,000 | 4,900 |
1987-05-18 | 500 | 512 | 485 | 490 | 3,351,000 | 4,900 |
1987-05-15 | 469 | 501 | 460 | 495 | 2,674,000 | 4,950 |
1987-05-14 | 405 | 460 | 405 | 459 | 902,000 | 4,590 |
1987-05-13 | 406 | 406 | 400 | 405 | 117,000 | 4,050 |
1987-05-12 | 411 | 411 | 411 | 411 | 27,000 | 4,110 |
1987-05-11 | 419 | 423 | 419 | 419 | 17,000 | 4,190 |
1987-05-08 | 425 | 425 | 410 | 425 | 19,000 | 4,250 |
1987-05-07 | 420 | 420 | 415 | 419 | 12,000 | 4,190 |
1987-05-06 | 433 | 433 | 420 | 420 | 71,000 | 4,200 |
1987-05-02 | 418 | 420 | 410 | 420 | 25,000 | 4,200 |
1987-05-01 | 418 | 418 | 410 | 415 | 31,000 | 4,150 |
1987-04-30 | 420 | 420 | 410 | 410 | 72,000 | 4,100 |
1987-04-28 | 415 | 415 | 410 | 410 | 74,000 | 4,100 |
1987-04-27 | 402 | 410 | 400 | 400 | 22,000 | 4,000 |
1987-04-25 | 401 | 401 | 400 | 400 | 8,000 | 4,000 |
1987-04-24 | 402 | 412 | 402 | 412 | 20,000 | 4,120 |
1987-04-23 | 406 | 406 | 405 | 405 | 9,000 | 4,050 |
1987-04-22 | 400 | 410 | 400 | 401 | 63,000 | 4,010 |
1987-04-21 | 400 | 400 | 395 | 395 | 106,000 | 3,950 |
1987-04-20 | 401 | 410 | 400 | 405 | 35,000 | 4,050 |
1987-04-17 | 400 | 401 | 400 | 401 | 16,000 | 4,010 |
1987-04-16 | 404 | 404 | 400 | 400 | 20,000 | 4,000 |
1987-04-15 | 400 | 400 | 399 | 400 | 28,000 | 4,000 |
1987-04-14 | 414 | 414 | 409 | 409 | 22,000 | 4,090 |
1987-04-13 | 410 | 413 | 385 | 399 | 93,000 | 3,990 |
1987-04-10 | 415 | 415 | 410 | 413 | 47,000 | 4,130 |
1987-04-09 | 412 | 420 | 412 | 415 | 13,000 | 4,150 |
1987-04-08 | 410 | 424 | 410 | 410 | 25,000 | 4,100 |
1987-04-07 | 423 | 423 | 409 | 409 | 42,000 | 4,090 |
1987-04-06 | 422 | 424 | 410 | 410 | 33,000 | 4,100 |
1987-04-04 | 410 | 420 | 410 | 420 | 36,000 | 4,200 |
1987-04-03 | 410 | 410 | 406 | 408 | 31,000 | 4,080 |
1987-04-02 | 401 | 410 | 401 | 410 | 54,000 | 4,100 |
1987-04-01 | 399 | 410 | 396 | 400 | 39,000 | 4,000 |
1987-03-31 | 400 | 405 | 399 | 400 | 32,000 | 4,000 |
1987-03-30 | 410 | 413 | 405 | 410 | 44,000 | 4,100 |
1987-03-27 | 419 | 428 | 415 | 428 | 103,000 | 4,280 |
1987-03-26 | 416 | 423 | 415 | 420 | 42,000 | 4,200 |
1987-03-25 | 423 | 423 | 416 | 416 | 57,000 | 4,160 |
1987-03-24 | 425 | 427 | 419 | 425 | 43,000 | 4,250 |
1987-03-23 | 420 | 426 | 417 | 425 | 69,000 | 4,250 |
1987-03-20 | 406 | 415 | 406 | 415 | 76,000 | 4,150 |
1987-03-19 | 416 | 424 | 412 | 416 | 76,000 | 4,160 |
1987-03-18 | 414 | 417 | 410 | 412 | 43,000 | 4,120 |
1987-03-17 | 407 | 412 | 407 | 408 | 19,000 | 4,080 |
1987-03-16 | 414 | 420 | 414 | 417 | 23,000 | 4,170 |
1987-03-13 | 414 | 414 | 407 | 414 | 24,000 | 4,140 |
1987-03-12 | 399 | 409 | 397 | 400 | 198,000 | 4,000 |
1987-03-11 | 404 | 405 | 397 | 399 | 109,000 | 3,990 |
1987-03-10 | 405 | 405 | 404 | 404 | 21,000 | 4,040 |
1987-03-09 | 415 | 420 | 415 | 420 | 54,000 | 4,200 |
1987-03-07 | 400 | 415 | 400 | 415 | 43,000 | 4,150 |
1987-03-06 | 398 | 405 | 398 | 405 | 27,000 | 4,050 |
1987-03-05 | 395 | 400 | 395 | 397 | 59,000 | 3,970 |
1987-03-04 | 400 | 400 | 397 | 397 | 62,000 | 3,970 |
1987-03-03 | 399 | 400 | 399 | 400 | 39,000 | 4,000 |
1987-02-28 | 400 | 400 | 397 | 397 | 12,000 | 3,970 |
1987-02-27 | 398 | 398 | 395 | 395 | 50,000 | 3,950 |
1987-02-26 | 400 | 400 | 398 | 398 | 49,000 | 3,980 |
1987-02-25 | 401 | 406 | 396 | 400 | 88,000 | 4,000 |
1987-02-24 | 415 | 416 | 411 | 411 | 59,000 | 4,110 |
1987-02-23 | 415 | 416 | 414 | 416 | 15,000 | 4,160 |
1987-02-20 | 424 | 425 | 415 | 415 | 13,000 | 4,150 |
1987-02-19 | 440 | 440 | 425 | 425 | 159,000 | 4,250 |
1987-02-18 | 435 | 440 | 435 | 440 | 235,000 | 4,400 |
1987-02-17 | 433 | 438 | 429 | 435 | 225,000 | 4,350 |
1987-02-16 | 410 | 439 | 410 | 435 | 702,000 | 4,350 |
1987-02-13 | 403 | 414 | 393 | 407 | 191,000 | 4,070 |
1987-02-12 | 397 | 400 | 393 | 393 | 296,000 | 3,930 |
1987-02-10 | 393 | 397 | 392 | 397 | 116,000 | 3,970 |
1987-02-09 | 395 | 397 | 392 | 392 | 59,000 | 3,920 |
1987-02-07 | 395 | 397 | 395 | 395 | 27,000 | 3,950 |
1987-02-06 | 395 | 396 | 393 | 395 | 87,000 | 3,950 |
1987-02-05 | 395 | 396 | 393 | 395 | 44,000 | 3,950 |
1987-02-04 | 400 | 400 | 391 | 391 | 85,000 | 3,910 |
1987-02-03 | 400 | 400 | 395 | 398 | 49,000 | 3,980 |
1987-02-02 | 400 | 400 | 395 | 395 | 81,000 | 3,950 |
1987-01-31 | 420 | 420 | 400 | 401 | 48,000 | 4,010 |
1987-01-30 | 405 | 425 | 405 | 420 | 168,000 | 4,200 |
1987-01-29 | 402 | 403 | 402 | 403 | 13,000 | 4,030 |
1987-01-28 | 410 | 410 | 402 | 402 | 117,000 | 4,020 |
1987-01-27 | 397 | 401 | 397 | 400 | 140,000 | 4,000 |
1987-01-26 | 397 | 401 | 397 | 397 | 117,000 | 3,970 |
1987-01-24 | 393 | 398 | 393 | 398 | 51,000 | 3,980 |
1987-01-23 | 392 | 392 | 385 | 390 | 158,000 | 3,900 |
1987-01-22 | 398 | 398 | 391 | 398 | 45,000 | 3,980 |
1987-01-21 | 395 | 395 | 390 | 391 | 140,000 | 3,910 |
1987-01-20 | 396 | 399 | 395 | 395 | 6,000 | 3,950 |
1987-01-19 | 396 | 399 | 395 | 396 | 51,000 | 3,960 |
1987-01-16 | 393 | 399 | 393 | 395 | 94,000 | 3,950 |
1987-01-14 | 392 | 400 | 392 | 400 | 311,000 | 4,000 |
1987-01-13 | 399 | 399 | 395 | 396 | 209,000 | 3,960 |
1987-01-12 | 393 | 400 | 393 | 394 | 27,000 | 3,940 |
1987-01-09 | 390 | 400 | 388 | 392 | 217,000 | 3,920 |
1987-01-08 | 410 | 410 | 397 | 400 | 308,000 | 4,000 |
1987-01-07 | 410 | 415 | 410 | 410 | 162,000 | 4,100 |
1987-01-06 | 410 | 410 | 410 | 410 | 3,000 | 4,100 |
1987-01-05 | 410 | 415 | 407 | 407 | 13,000 | 4,070 |
分割・併合履歴 : [2016-09-28]1株→0.1株