2267 (株)ヤクルト本社 の時系列データ [1999年度]
日付 | 始値 | 高値 | 安値 | 終値 | 出来高 | 調整後終値 |
---|---|---|---|---|---|---|
1999-12-27 | 940 | 940 | 883 | 890 | 250,000 | 445 |
1999-12-24 | 945 | 960 | 930 | 930 | 254,000 | 465 |
1999-12-22 | 925 | 928 | 910 | 920 | 192,000 | 460 |
1999-12-21 | 884 | 930 | 876 | 895 | 156,000 | 447.50 |
1999-12-20 | 893 | 900 | 873 | 885 | 232,000 | 442.50 |
1999-12-17 | 860 | 880 | 859 | 873 | 248,000 | 436.50 |
1999-12-16 | 890 | 900 | 850 | 859 | 642,000 | 429.50 |
1999-12-15 | 930 | 932 | 900 | 900 | 315,000 | 450 |
1999-12-14 | 945 | 945 | 935 | 940 | 314,000 | 470 |
1999-12-13 | 939 | 953 | 939 | 952 | 183,000 | 476 |
1999-12-10 | 950 | 961 | 938 | 941 | 806,000 | 470.50 |
1999-12-09 | 1,000 | 1,000 | 980 | 990 | 367,000 | 495 |
1999-12-08 | 1,000 | 1,015 | 999 | 1,000 | 509,000 | 500 |
1999-12-07 | 1,015 | 1,019 | 1,000 | 1,013 | 376,000 | 506.50 |
1999-12-06 | 1,050 | 1,050 | 1,013 | 1,017 | 337,000 | 508.50 |
1999-12-03 | 1,060 | 1,060 | 1,036 | 1,049 | 191,000 | 524.50 |
1999-12-02 | 1,070 | 1,089 | 1,060 | 1,068 | 254,000 | 534 |
1999-12-01 | 1,119 | 1,119 | 1,055 | 1,069 | 215,000 | 534.50 |
1999-11-30 | 1,090 | 1,135 | 1,084 | 1,100 | 171,000 | 550 |
1999-11-29 | 1,091 | 1,102 | 1,090 | 1,092 | 95,000 | 546 |
1999-11-26 | 1,137 | 1,148 | 1,080 | 1,115 | 181,000 | 557.50 |
1999-11-25 | 1,075 | 1,150 | 1,055 | 1,150 | 434,000 | 575 |
1999-11-24 | 1,100 | 1,110 | 1,050 | 1,075 | 392,000 | 537.50 |
1999-11-22 | 1,150 | 1,150 | 1,107 | 1,129 | 304,000 | 564.50 |
1999-11-19 | 1,132 | 1,150 | 1,110 | 1,139 | 339,000 | 569.50 |
1999-11-18 | 1,090 | 1,130 | 1,090 | 1,120 | 329,000 | 560 |
1999-11-17 | 1,058 | 1,079 | 1,051 | 1,070 | 220,000 | 535 |
1999-11-16 | 1,011 | 1,032 | 1,011 | 1,018 | 173,000 | 509 |
1999-11-15 | 1,100 | 1,100 | 1,005 | 1,011 | 306,000 | 505.50 |
1999-11-12 | 1,082 | 1,130 | 1,052 | 1,085 | 639,000 | 542.50 |
1999-11-11 | 1,025 | 1,080 | 1,025 | 1,052 | 756,000 | 526 |
1999-11-10 | 1,026 | 1,050 | 993 | 995 | 652,000 | 497.50 |
1999-11-09 | 1,030 | 1,039 | 1,015 | 1,015 | 354,000 | 507.50 |
1999-11-08 | 1,025 | 1,035 | 1,020 | 1,020 | 297,000 | 510 |
1999-11-05 | 1,022 | 1,054 | 1,022 | 1,045 | 425,000 | 522.50 |
1999-11-04 | 1,092 | 1,097 | 1,070 | 1,082 | 202,000 | 541 |
1999-11-02 | 1,091 | 1,097 | 1,073 | 1,097 | 149,000 | 548.50 |
1999-11-01 | 1,052 | 1,085 | 1,052 | 1,071 | 203,000 | 535.50 |
1999-10-29 | 1,075 | 1,110 | 1,020 | 1,066 | 947,000 | 533 |
1999-10-28 | 1,010 | 1,071 | 1,010 | 1,055 | 836,000 | 527.50 |
1999-10-27 | 985 | 1,015 | 985 | 1,001 | 1,271,000 | 500.50 |
1999-10-26 | 1,110 | 1,110 | 1,085 | 1,085 | 554,000 | 542.50 |
1999-10-25 | 1,121 | 1,121 | 1,100 | 1,118 | 332,000 | 559 |
1999-10-22 | 1,144 | 1,144 | 1,120 | 1,121 | 255,000 | 560.50 |
1999-10-21 | 1,200 | 1,200 | 1,160 | 1,164 | 291,000 | 582 |
1999-10-20 | 1,189 | 1,221 | 1,165 | 1,175 | 345,000 | 587.50 |
1999-10-19 | 1,120 | 1,130 | 1,100 | 1,129 | 277,000 | 564.50 |
1999-10-18 | 1,100 | 1,105 | 1,071 | 1,080 | 288,000 | 540 |
1999-10-15 | 1,081 | 1,115 | 1,080 | 1,100 | 438,000 | 550 |
1999-10-14 | 1,130 | 1,138 | 1,092 | 1,100 | 656,000 | 550 |
1999-10-13 | 1,128 | 1,160 | 1,128 | 1,130 | 584,000 | 565 |
1999-10-12 | 1,230 | 1,237 | 1,146 | 1,175 | 726,000 | 587.50 |
1999-10-08 | 1,189 | 1,240 | 1,189 | 1,238 | 808,000 | 619 |
1999-10-07 | 1,300 | 1,325 | 1,251 | 1,269 | 524,000 | 634.50 |
1999-10-06 | 1,352 | 1,360 | 1,340 | 1,360 | 119,000 | 680 |
1999-10-05 | 1,342 | 1,359 | 1,290 | 1,339 | 219,000 | 669.50 |
1999-10-04 | 1,430 | 1,430 | 1,379 | 1,382 | 111,000 | 691 |
1999-10-01 | 1,381 | 1,420 | 1,370 | 1,420 | 332,000 | 710 |
1999-09-30 | 1,343 | 1,391 | 1,342 | 1,391 | 116,000 | 695.50 |
1999-09-29 | 1,380 | 1,380 | 1,330 | 1,332 | 100,000 | 666 |
1999-09-28 | 1,323 | 1,391 | 1,310 | 1,391 | 316,000 | 695.50 |
1999-09-27 | 1,400 | 1,400 | 1,290 | 1,295 | 174,000 | 647.50 |
1999-09-24 | 1,400 | 1,400 | 1,315 | 1,352 | 520,000 | 676 |
1999-09-22 | 1,350 | 1,468 | 1,350 | 1,400 | 965,000 | 700 |
1999-09-21 | 1,350 | 1,352 | 1,338 | 1,345 | 500,000 | 672.50 |
1999-09-20 | 1,340 | 1,350 | 1,320 | 1,335 | 478,000 | 667.50 |
1999-09-17 | 1,241 | 1,300 | 1,190 | 1,300 | 749,000 | 650 |
1999-09-16 | 1,310 | 1,324 | 1,259 | 1,261 | 856,000 | 630.50 |
1999-09-14 | 1,419 | 1,419 | 1,390 | 1,390 | 364,000 | 695 |
1999-09-13 | 1,349 | 1,399 | 1,320 | 1,399 | 623,000 | 699.50 |
1999-09-10 | 1,430 | 1,444 | 1,382 | 1,400 | 528,000 | 700 |
1999-09-09 | 1,499 | 1,500 | 1,430 | 1,450 | 214,000 | 725 |
1999-09-08 | 1,489 | 1,499 | 1,470 | 1,499 | 246,000 | 749.50 |
1999-09-07 | 1,481 | 1,494 | 1,481 | 1,489 | 222,000 | 744.50 |
1999-09-06 | 1,490 | 1,504 | 1,471 | 1,480 | 398,000 | 740 |
1999-09-03 | 1,550 | 1,560 | 1,494 | 1,534 | 524,000 | 767 |
1999-09-02 | 1,582 | 1,582 | 1,550 | 1,550 | 324,000 | 775 |
1999-09-01 | 1,580 | 1,595 | 1,551 | 1,576 | 1,183,000 | 788 |
1999-08-31 | 1,590 | 1,590 | 1,520 | 1,590 | 1,538,000 | 795 |
1999-08-30 | 1,570 | 1,590 | 1,565 | 1,589 | 1,076,000 | 794.50 |
1999-08-27 | 1,500 | 1,565 | 1,485 | 1,562 | 1,002,000 | 781 |
1999-08-26 | 1,500 | 1,504 | 1,482 | 1,497 | 482,000 | 748.50 |
1999-08-25 | 1,493 | 1,510 | 1,481 | 1,500 | 333,000 | 750 |
1999-08-24 | 1,500 | 1,500 | 1,470 | 1,475 | 151,000 | 737.50 |
1999-08-23 | 1,519 | 1,519 | 1,475 | 1,485 | 282,000 | 742.50 |
1999-08-20 | 1,529 | 1,539 | 1,515 | 1,520 | 572,000 | 760 |
1999-08-19 | 1,500 | 1,530 | 1,475 | 1,530 | 799,000 | 765 |
1999-08-18 | 1,500 | 1,559 | 1,489 | 1,495 | 1,253,000 | 747.50 |
1999-08-17 | 1,486 | 1,496 | 1,460 | 1,460 | 671,000 | 730 |
1999-08-16 | 1,420 | 1,500 | 1,400 | 1,495 | 1,369,000 | 747.50 |
1999-08-13 | 1,368 | 1,410 | 1,357 | 1,400 | 605,000 | 700 |
1999-08-12 | 1,345 | 1,391 | 1,330 | 1,375 | 1,686,000 | 687.50 |
1999-08-11 | 1,297 | 1,350 | 1,290 | 1,310 | 1,340,000 | 655 |
1999-08-10 | 1,229 | 1,315 | 1,229 | 1,305 | 779,000 | 652.50 |
1999-08-09 | 1,224 | 1,249 | 1,204 | 1,249 | 100,000 | 624.50 |
1999-08-06 | 1,257 | 1,261 | 1,243 | 1,244 | 347,000 | 622 |
1999-08-05 | 1,280 | 1,280 | 1,249 | 1,258 | 276,000 | 629 |
1999-08-04 | 1,290 | 1,330 | 1,280 | 1,280 | 1,861,000 | 640 |
1999-08-03 | 1,260 | 1,286 | 1,245 | 1,279 | 856,000 | 639.50 |
1999-08-02 | 1,216 | 1,260 | 1,200 | 1,251 | 338,000 | 625.50 |
1999-07-30 | 1,161 | 1,199 | 1,150 | 1,197 | 150,000 | 598.50 |
1999-07-29 | 1,183 | 1,185 | 1,180 | 1,180 | 91,000 | 590 |
1999-07-28 | 1,187 | 1,190 | 1,175 | 1,185 | 124,000 | 592.50 |
1999-07-27 | 1,184 | 1,193 | 1,180 | 1,187 | 85,000 | 593.50 |
1999-07-26 | 1,210 | 1,211 | 1,175 | 1,180 | 147,000 | 590 |
1999-07-23 | 1,150 | 1,202 | 1,150 | 1,200 | 182,000 | 600 |
1999-07-22 | 1,230 | 1,230 | 1,190 | 1,204 | 345,000 | 602 |
1999-07-21 | 1,240 | 1,240 | 1,217 | 1,230 | 212,000 | 615 |
1999-07-19 | 1,202 | 1,220 | 1,202 | 1,220 | 176,000 | 610 |
1999-07-16 | 1,231 | 1,231 | 1,219 | 1,222 | 397,000 | 611 |
1999-07-15 | 1,240 | 1,250 | 1,230 | 1,249 | 677,000 | 624.50 |
1999-07-14 | 1,260 | 1,260 | 1,230 | 1,254 | 525,000 | 627 |
1999-07-13 | 1,250 | 1,256 | 1,236 | 1,252 | 465,000 | 626 |
1999-07-12 | 1,240 | 1,250 | 1,230 | 1,236 | 381,000 | 618 |
1999-07-09 | 1,240 | 1,248 | 1,220 | 1,240 | 399,000 | 620 |
1999-07-08 | 1,255 | 1,270 | 1,240 | 1,240 | 214,000 | 620 |
1999-07-07 | 1,260 | 1,280 | 1,250 | 1,260 | 380,000 | 630 |
1999-07-06 | 1,300 | 1,300 | 1,260 | 1,270 | 1,141,000 | 635 |
1999-07-05 | 1,181 | 1,300 | 1,180 | 1,300 | 2,705,000 | 650 |
1999-07-02 | 1,171 | 1,180 | 1,150 | 1,175 | 326,000 | 587.50 |
1999-07-01 | 1,124 | 1,140 | 1,105 | 1,140 | 582,000 | 570 |
1999-06-30 | 1,135 | 1,140 | 1,105 | 1,105 | 441,000 | 552.50 |
1999-06-29 | 1,131 | 1,140 | 1,115 | 1,129 | 205,000 | 564.50 |
1999-06-28 | 1,101 | 1,115 | 1,101 | 1,111 | 161,000 | 555.50 |
1999-06-25 | 1,101 | 1,120 | 1,085 | 1,120 | 380,000 | 560 |
1999-06-24 | 1,120 | 1,125 | 1,104 | 1,120 | 297,000 | 560 |
1999-06-23 | 1,140 | 1,140 | 1,125 | 1,127 | 258,000 | 563.50 |
1999-06-22 | 1,145 | 1,160 | 1,137 | 1,143 | 378,000 | 571.50 |
1999-06-21 | 1,160 | 1,163 | 1,135 | 1,139 | 653,000 | 569.50 |
1999-06-18 | 1,152 | 1,172 | 1,152 | 1,160 | 566,000 | 580 |
1999-06-17 | 1,177 | 1,182 | 1,151 | 1,169 | 497,000 | 584.50 |
1999-06-16 | 1,181 | 1,190 | 1,177 | 1,177 | 637,000 | 588.50 |
1999-06-15 | 1,171 | 1,187 | 1,170 | 1,183 | 402,000 | 591.50 |
1999-06-14 | 1,170 | 1,184 | 1,169 | 1,169 | 515,000 | 584.50 |
1999-06-11 | 1,189 | 1,209 | 1,179 | 1,184 | 1,449,000 | 592 |
1999-06-10 | 1,189 | 1,190 | 1,165 | 1,179 | 885,000 | 589.50 |
1999-06-09 | 1,169 | 1,173 | 1,162 | 1,170 | 346,000 | 585 |
1999-06-08 | 1,171 | 1,181 | 1,171 | 1,174 | 276,000 | 587 |
1999-06-07 | 1,189 | 1,195 | 1,171 | 1,171 | 395,000 | 585.50 |
1999-06-04 | 1,191 | 1,195 | 1,180 | 1,187 | 892,000 | 593.50 |
1999-06-03 | 1,174 | 1,192 | 1,166 | 1,188 | 1,248,000 | 594 |
1999-06-02 | 1,138 | 1,166 | 1,129 | 1,164 | 708,000 | 582 |
1999-06-01 | 1,121 | 1,138 | 1,115 | 1,135 | 1,060,000 | 567.50 |
1999-05-31 | 1,104 | 1,130 | 1,104 | 1,118 | 371,000 | 559 |
1999-05-28 | 1,095 | 1,115 | 1,095 | 1,114 | 205,000 | 557 |
1999-05-27 | 1,140 | 1,140 | 1,110 | 1,130 | 248,000 | 565 |
1999-05-26 | 1,100 | 1,137 | 1,096 | 1,132 | 679,000 | 566 |
1999-05-25 | 1,090 | 1,107 | 1,086 | 1,095 | 509,000 | 547.50 |
1999-05-24 | 1,080 | 1,095 | 1,070 | 1,095 | 239,000 | 547.50 |
1999-05-21 | 1,061 | 1,081 | 1,052 | 1,081 | 642,000 | 540.50 |
1999-05-20 | 1,090 | 1,115 | 1,070 | 1,081 | 473,000 | 540.50 |
1999-05-19 | 1,090 | 1,120 | 1,040 | 1,084 | 809,000 | 542 |
1999-05-18 | 1,178 | 1,208 | 1,119 | 1,125 | 2,561,000 | 562.50 |
1999-05-17 | 1,140 | 1,179 | 1,130 | 1,178 | 736,000 | 589 |
1999-05-14 | 1,150 | 1,159 | 1,140 | 1,140 | 822,000 | 570 |
1999-05-13 | 1,106 | 1,144 | 1,095 | 1,140 | 630,000 | 570 |
1999-05-12 | 1,100 | 1,113 | 1,090 | 1,095 | 478,000 | 547.50 |
1999-05-11 | 1,121 | 1,121 | 1,090 | 1,097 | 497,000 | 548.50 |
1999-05-10 | 1,136 | 1,140 | 1,118 | 1,118 | 202,000 | 559 |
1999-05-07 | 1,165 | 1,165 | 1,116 | 1,116 | 508,000 | 558 |
1999-05-06 | 1,118 | 1,155 | 1,116 | 1,145 | 591,000 | 572.50 |
1999-04-30 | 1,113 | 1,140 | 1,111 | 1,118 | 361,000 | 559 |
1999-04-28 | 1,160 | 1,170 | 1,130 | 1,130 | 446,000 | 565 |
1999-04-27 | 1,150 | 1,177 | 1,135 | 1,160 | 1,541,000 | 580 |
1999-04-26 | 1,086 | 1,140 | 1,070 | 1,134 | 1,378,000 | 567 |
1999-04-23 | 1,081 | 1,081 | 1,065 | 1,066 | 637,000 | 533 |
1999-04-22 | 1,090 | 1,100 | 1,065 | 1,080 | 489,000 | 540 |
1999-04-21 | 1,071 | 1,085 | 1,050 | 1,080 | 409,000 | 540 |
1999-04-20 | 1,040 | 1,060 | 1,035 | 1,060 | 350,000 | 530 |
1999-04-19 | 1,060 | 1,060 | 1,025 | 1,036 | 378,000 | 518 |
1999-04-16 | 1,084 | 1,095 | 1,062 | 1,062 | 355,000 | 531 |
1999-04-15 | 1,120 | 1,120 | 1,080 | 1,085 | 736,000 | 542.50 |
1999-04-14 | 1,099 | 1,126 | 1,061 | 1,120 | 856,000 | 560 |
1999-04-13 | 1,050 | 1,095 | 1,040 | 1,080 | 556,000 | 540 |
1999-04-12 | 1,050 | 1,050 | 1,010 | 1,027 | 442,000 | 513.50 |
1999-04-09 | 1,070 | 1,115 | 1,060 | 1,061 | 634,000 | 530.50 |
1999-04-08 | 1,080 | 1,080 | 1,060 | 1,075 | 676,000 | 537.50 |
1999-04-07 | 1,160 | 1,165 | 1,100 | 1,100 | 1,869,000 | 550 |
1999-04-06 | 1,030 | 1,140 | 1,011 | 1,140 | 2,325,000 | 570 |
1999-04-05 | 1,023 | 1,030 | 990 | 1,010 | 2,316,000 | 505 |
1999-04-02 | 872 | 933 | 872 | 933 | 1,347,000 | 466.50 |
1999-04-01 | 845 | 863 | 840 | 862 | 336,000 | 431 |
1999-03-31 | 842 | 855 | 842 | 850 | 198,000 | 425 |
1999-03-30 | 856 | 860 | 837 | 850 | 307,000 | 425 |
1999-03-29 | 876 | 876 | 849 | 849 | 215,000 | 424.50 |
1999-03-26 | 898 | 898 | 860 | 875 | 455,000 | 437.50 |
1999-03-25 | 880 | 900 | 878 | 898 | 961,000 | 449 |
1999-03-24 | 828 | 875 | 821 | 868 | 1,189,000 | 434 |
1999-03-23 | 830 | 834 | 811 | 828 | 485,000 | 414 |
1999-03-19 | 790 | 810 | 785 | 809 | 388,000 | 404.50 |
1999-03-18 | 804 | 809 | 781 | 781 | 431,000 | 390.50 |
1999-03-17 | 807 | 824 | 798 | 824 | 694,000 | 412 |
1999-03-16 | 795 | 827 | 790 | 827 | 481,000 | 413.50 |
1999-03-15 | 790 | 795 | 774 | 785 | 758,000 | 392.50 |
1999-03-12 | 835 | 840 | 795 | 819 | 673,000 | 409.50 |
1999-03-11 | 800 | 835 | 790 | 828 | 1,992,000 | 414 |
1999-03-10 | 710 | 770 | 706 | 762 | 1,001,000 | 381 |
1999-03-09 | 703 | 703 | 690 | 702 | 162,000 | 351 |
1999-03-08 | 703 | 710 | 697 | 697 | 275,000 | 348.50 |
1999-03-05 | 685 | 695 | 685 | 693 | 259,000 | 346.50 |
1999-03-04 | 672 | 690 | 672 | 689 | 195,000 | 344.50 |
1999-03-03 | 667 | 671 | 663 | 671 | 71,000 | 335.50 |
1999-03-02 | 678 | 678 | 665 | 667 | 110,000 | 333.50 |
1999-03-01 | 672 | 680 | 670 | 670 | 97,000 | 335 |
1999-02-26 | 670 | 671 | 666 | 666 | 241,000 | 333 |
1999-02-25 | 676 | 676 | 668 | 668 | 104,000 | 334 |
1999-02-24 | 679 | 679 | 670 | 674 | 93,000 | 337 |
1999-02-23 | 676 | 683 | 665 | 665 | 159,000 | 332.50 |
1999-02-22 | 690 | 690 | 671 | 678 | 107,000 | 339 |
1999-02-19 | 670 | 671 | 660 | 670 | 299,000 | 335 |
1999-02-18 | 685 | 685 | 665 | 666 | 249,000 | 333 |
1999-02-17 | 699 | 699 | 682 | 685 | 186,000 | 342.50 |
1999-02-16 | 689 | 699 | 685 | 699 | 132,000 | 349.50 |
1999-02-15 | 679 | 679 | 670 | 679 | 121,000 | 339.50 |
1999-02-12 | 678 | 678 | 665 | 675 | 294,000 | 337.50 |
1999-02-10 | 682 | 682 | 666 | 678 | 271,000 | 339 |
1999-02-09 | 690 | 697 | 684 | 684 | 111,000 | 342 |
1999-02-08 | 680 | 687 | 680 | 686 | 71,000 | 343 |
1999-02-05 | 670 | 680 | 669 | 678 | 288,000 | 339 |
1999-02-04 | 685 | 686 | 670 | 675 | 178,000 | 337.50 |
1999-02-03 | 693 | 693 | 678 | 680 | 537,000 | 340 |
1999-02-02 | 702 | 702 | 698 | 700 | 158,000 | 350 |
1999-02-01 | 700 | 706 | 699 | 703 | 106,000 | 351.50 |
1999-01-29 | 700 | 720 | 697 | 718 | 189,000 | 359 |
1999-01-28 | 700 | 707 | 699 | 703 | 60,000 | 351.50 |
1999-01-27 | 709 | 710 | 700 | 710 | 170,000 | 355 |
1999-01-26 | 688 | 701 | 688 | 700 | 259,000 | 350 |
1999-01-25 | 709 | 709 | 685 | 685 | 89,000 | 342.50 |
1999-01-22 | 707 | 707 | 690 | 691 | 230,000 | 345.50 |
1999-01-21 | 702 | 704 | 696 | 702 | 179,000 | 351 |
1999-01-20 | 700 | 720 | 690 | 720 | 181,000 | 360 |
1999-01-19 | 700 | 701 | 680 | 690 | 89,000 | 345 |
1999-01-18 | 711 | 715 | 698 | 700 | 96,000 | 350 |
1999-01-14 | 700 | 710 | 700 | 710 | 171,000 | 355 |
1999-01-13 | 716 | 720 | 706 | 706 | 116,000 | 353 |
1999-01-12 | 720 | 720 | 713 | 717 | 77,000 | 358.50 |
1999-01-11 | 710 | 720 | 710 | 713 | 46,000 | 356.50 |
1999-01-08 | 720 | 725 | 710 | 720 | 98,000 | 360 |
1999-01-07 | 724 | 731 | 721 | 729 | 376,000 | 364.50 |
1999-01-06 | 704 | 724 | 703 | 724 | 148,000 | 362 |
1999-01-05 | 709 | 709 | 696 | 703 | 115,000 | 351.50 |
1999-01-04 | 705 | 705 | 699 | 699 | 22,000 | 349.50 |
分割・併合履歴 : [2023-09-28]1株→2株 [1989-09-26]1株→1.5株 [1989-03-28]1株→1.1株 [1986-01-28]1株→1.1株 [1983-07-27]1株→1.2株