6947 (株)図研 の時系列データ [2002年度]
日付 | 始値 | 高値 | 安値 | 終値 | 出来高 | 調整後終値 |
---|---|---|---|---|---|---|
2002-12-30 | 675 | 680 | 665 | 679 | 26,200 | 679 |
2002-12-27 | 684 | 688 | 670 | 685 | 29,000 | 685 |
2002-12-26 | 675 | 685 | 674 | 685 | 32,200 | 685 |
2002-12-25 | 695 | 695 | 670 | 675 | 178,200 | 675 |
2002-12-24 | 665 | 669 | 655 | 667 | 43,600 | 667 |
2002-12-20 | 656 | 666 | 656 | 663 | 29,800 | 663 |
2002-12-19 | 655 | 660 | 650 | 655 | 37,100 | 655 |
2002-12-18 | 674 | 680 | 660 | 660 | 35,900 | 660 |
2002-12-17 | 690 | 699 | 670 | 672 | 70,500 | 672 |
2002-12-16 | 692 | 693 | 670 | 670 | 42,000 | 670 |
2002-12-13 | 690 | 710 | 680 | 692 | 116,300 | 692 |
2002-12-12 | 714 | 715 | 680 | 696 | 68,700 | 696 |
2002-12-11 | 731 | 739 | 714 | 714 | 58,200 | 714 |
2002-12-10 | 748 | 748 | 730 | 739 | 48,700 | 739 |
2002-12-09 | 759 | 764 | 750 | 758 | 24,800 | 758 |
2002-12-06 | 750 | 764 | 749 | 759 | 35,500 | 759 |
2002-12-05 | 799 | 799 | 760 | 769 | 39,200 | 769 |
2002-12-04 | 795 | 814 | 791 | 791 | 37,100 | 791 |
2002-12-03 | 861 | 864 | 840 | 845 | 62,700 | 845 |
2002-12-02 | 870 | 873 | 850 | 852 | 27,800 | 852 |
2002-11-29 | 810 | 852 | 809 | 840 | 54,200 | 840 |
2002-11-28 | 795 | 809 | 785 | 805 | 40,100 | 805 |
2002-11-27 | 780 | 800 | 772 | 772 | 32,900 | 772 |
2002-11-26 | 810 | 820 | 773 | 777 | 39,300 | 777 |
2002-11-25 | 783 | 800 | 773 | 800 | 41,300 | 800 |
2002-11-22 | 760 | 760 | 745 | 753 | 31,500 | 753 |
2002-11-21 | 695 | 731 | 695 | 729 | 65,200 | 729 |
2002-11-20 | 680 | 700 | 680 | 687 | 56,000 | 687 |
2002-11-19 | 693 | 698 | 660 | 690 | 32,700 | 690 |
2002-11-18 | 735 | 735 | 700 | 713 | 28,200 | 713 |
2002-11-15 | 726 | 736 | 725 | 730 | 48,400 | 730 |
2002-11-14 | 730 | 750 | 725 | 725 | 29,600 | 725 |
2002-11-13 | 791 | 791 | 750 | 750 | 28,000 | 750 |
2002-11-12 | 794 | 798 | 790 | 794 | 15,400 | 794 |
2002-11-11 | 800 | 801 | 790 | 794 | 15,400 | 794 |
2002-11-08 | 820 | 830 | 820 | 820 | 14,300 | 820 |
2002-11-07 | 844 | 847 | 840 | 843 | 28,000 | 843 |
2002-11-06 | 862 | 869 | 840 | 847 | 29,900 | 847 |
2002-11-05 | 860 | 884 | 855 | 860 | 37,800 | 860 |
2002-11-01 | 840 | 854 | 840 | 854 | 13,300 | 854 |
2002-10-31 | 858 | 858 | 840 | 845 | 17,000 | 845 |
2002-10-30 | 842 | 860 | 840 | 851 | 40,300 | 851 |
2002-10-29 | 840 | 852 | 840 | 843 | 23,300 | 843 |
2002-10-28 | 851 | 860 | 848 | 860 | 26,700 | 860 |
2002-10-25 | 850 | 890 | 850 | 890 | 9,800 | 890 |
2002-10-24 | 891 | 891 | 850 | 862 | 14,400 | 862 |
2002-10-23 | 892 | 908 | 882 | 901 | 18,900 | 901 |
2002-10-22 | 939 | 941 | 892 | 892 | 18,300 | 892 |
2002-10-21 | 950 | 950 | 937 | 938 | 11,700 | 938 |
2002-10-18 | 940 | 947 | 927 | 943 | 13,100 | 943 |
2002-10-17 | 927 | 960 | 919 | 924 | 19,600 | 924 |
2002-10-16 | 966 | 966 | 937 | 937 | 33,500 | 937 |
2002-10-15 | 920 | 938 | 910 | 936 | 32,200 | 936 |
2002-10-11 | 879 | 887 | 871 | 877 | 26,800 | 877 |
2002-10-10 | 824 | 850 | 800 | 846 | 46,900 | 846 |
2002-10-09 | 902 | 902 | 862 | 863 | 36,200 | 863 |
2002-10-08 | 890 | 903 | 881 | 892 | 37,300 | 892 |
2002-10-07 | 912 | 912 | 890 | 891 | 33,100 | 891 |
2002-10-04 | 919 | 935 | 901 | 913 | 26,100 | 913 |
2002-10-03 | 950 | 950 | 921 | 923 | 40,900 | 923 |
2002-10-02 | 974 | 986 | 953 | 955 | 33,100 | 955 |
2002-10-01 | 985 | 987 | 970 | 984 | 19,100 | 984 |
2002-09-30 | 990 | 997 | 985 | 987 | 9,900 | 987 |
2002-09-27 | 1,010 | 1,015 | 990 | 1,000 | 35,000 | 1,000 |
2002-09-26 | 982 | 1,006 | 982 | 1,000 | 18,900 | 1,000 |
2002-09-25 | 985 | 1,005 | 985 | 1,000 | 21,800 | 1,000 |
2002-09-24 | 1,000 | 1,010 | 995 | 1,010 | 23,700 | 1,010 |
2002-09-20 | 1,000 | 1,009 | 991 | 1,000 | 15,700 | 1,000 |
2002-09-19 | 1,026 | 1,048 | 1,000 | 1,010 | 31,100 | 1,010 |
2002-09-18 | 1,010 | 1,010 | 980 | 1,009 | 18,300 | 1,009 |
2002-09-17 | 990 | 1,010 | 990 | 1,010 | 22,100 | 1,010 |
2002-09-13 | 980 | 996 | 980 | 990 | 70,700 | 990 |
2002-09-12 | 1,005 | 1,010 | 996 | 1,001 | 20,300 | 1,001 |
2002-09-11 | 1,005 | 1,017 | 1,000 | 1,008 | 13,300 | 1,008 |
2002-09-10 | 1,005 | 1,026 | 995 | 999 | 17,000 | 999 |
2002-09-09 | 1,011 | 1,025 | 1,002 | 1,017 | 16,600 | 1,017 |
2002-09-06 | 997 | 1,008 | 990 | 1,002 | 33,100 | 1,002 |
2002-09-05 | 1,047 | 1,051 | 1,000 | 1,012 | 26,100 | 1,012 |
2002-09-04 | 1,010 | 1,030 | 990 | 997 | 36,700 | 997 |
2002-09-03 | 1,081 | 1,081 | 1,031 | 1,050 | 23,200 | 1,050 |
2002-09-02 | 1,072 | 1,072 | 1,060 | 1,061 | 9,400 | 1,061 |
2002-08-30 | 1,056 | 1,095 | 1,056 | 1,095 | 17,200 | 1,095 |
2002-08-29 | 1,098 | 1,098 | 1,065 | 1,070 | 19,600 | 1,070 |
2002-08-28 | 1,115 | 1,115 | 1,091 | 1,115 | 11,300 | 1,115 |
2002-08-27 | 1,119 | 1,130 | 1,101 | 1,115 | 12,500 | 1,115 |
2002-08-26 | 1,130 | 1,139 | 1,095 | 1,137 | 19,900 | 1,137 |
2002-08-23 | 1,080 | 1,100 | 1,080 | 1,095 | 30,200 | 1,095 |
2002-08-22 | 1,077 | 1,085 | 1,061 | 1,077 | 32,000 | 1,077 |
2002-08-21 | 1,083 | 1,083 | 1,070 | 1,076 | 14,300 | 1,076 |
2002-08-20 | 1,090 | 1,092 | 1,063 | 1,082 | 15,700 | 1,082 |
2002-08-19 | 1,091 | 1,091 | 1,078 | 1,080 | 19,300 | 1,080 |
2002-08-16 | 1,100 | 1,100 | 1,085 | 1,091 | 15,000 | 1,091 |
2002-08-15 | 1,082 | 1,100 | 1,082 | 1,097 | 19,800 | 1,097 |
2002-08-14 | 1,079 | 1,081 | 1,067 | 1,081 | 17,200 | 1,081 |
2002-08-13 | 1,100 | 1,106 | 1,081 | 1,085 | 19,800 | 1,085 |
2002-08-12 | 1,139 | 1,139 | 1,110 | 1,110 | 15,300 | 1,110 |
2002-08-09 | 1,102 | 1,150 | 1,102 | 1,138 | 20,200 | 1,138 |
2002-08-08 | 1,136 | 1,140 | 1,095 | 1,096 | 11,000 | 1,096 |
2002-08-07 | 1,090 | 1,108 | 1,090 | 1,100 | 12,600 | 1,100 |
2002-08-06 | 1,061 | 1,093 | 1,060 | 1,061 | 20,900 | 1,061 |
2002-08-05 | 1,100 | 1,122 | 1,100 | 1,104 | 18,300 | 1,104 |
2002-08-02 | 1,130 | 1,146 | 1,120 | 1,130 | 15,000 | 1,130 |
2002-08-01 | 1,172 | 1,172 | 1,150 | 1,150 | 14,800 | 1,150 |
2002-07-31 | 1,174 | 1,195 | 1,169 | 1,182 | 13,500 | 1,182 |
2002-07-30 | 1,191 | 1,200 | 1,174 | 1,185 | 22,900 | 1,185 |
2002-07-29 | 1,150 | 1,170 | 1,090 | 1,091 | 24,800 | 1,091 |
2002-07-26 | 1,170 | 1,187 | 1,150 | 1,150 | 47,400 | 1,150 |
2002-07-25 | 1,230 | 1,230 | 1,181 | 1,183 | 11,300 | 1,183 |
2002-07-24 | 1,187 | 1,189 | 1,172 | 1,180 | 44,000 | 1,180 |
2002-07-23 | 1,166 | 1,220 | 1,166 | 1,192 | 34,300 | 1,192 |
2002-07-22 | 1,179 | 1,234 | 1,175 | 1,223 | 27,900 | 1,223 |
2002-07-19 | 1,259 | 1,259 | 1,220 | 1,239 | 38,600 | 1,239 |
2002-07-18 | 1,200 | 1,270 | 1,194 | 1,269 | 72,600 | 1,269 |
2002-07-17 | 1,212 | 1,212 | 1,160 | 1,163 | 32,900 | 1,163 |
2002-07-16 | 1,200 | 1,220 | 1,198 | 1,210 | 33,100 | 1,210 |
2002-07-15 | 1,220 | 1,226 | 1,220 | 1,220 | 34,900 | 1,220 |
2002-07-12 | 1,245 | 1,245 | 1,211 | 1,220 | 55,400 | 1,220 |
2002-07-11 | 1,205 | 1,220 | 1,201 | 1,207 | 43,400 | 1,207 |
2002-07-10 | 1,250 | 1,260 | 1,233 | 1,245 | 63,700 | 1,245 |
2002-07-09 | 1,226 | 1,280 | 1,205 | 1,268 | 117,900 | 1,268 |
2002-07-08 | 1,211 | 1,220 | 1,181 | 1,186 | 65,100 | 1,186 |
2002-07-05 | 1,150 | 1,197 | 1,150 | 1,171 | 45,500 | 1,171 |
2002-07-04 | 1,180 | 1,190 | 1,160 | 1,160 | 35,200 | 1,160 |
2002-07-03 | 1,090 | 1,170 | 1,090 | 1,160 | 50,300 | 1,160 |
2002-07-02 | 1,096 | 1,111 | 1,095 | 1,110 | 42,400 | 1,110 |
2002-07-01 | 1,090 | 1,100 | 1,082 | 1,095 | 34,800 | 1,095 |
2002-06-28 | 1,080 | 1,085 | 1,055 | 1,056 | 78,900 | 1,056 |
2002-06-27 | 1,090 | 1,090 | 1,060 | 1,060 | 54,400 | 1,060 |
2002-06-26 | 1,100 | 1,105 | 1,070 | 1,070 | 34,800 | 1,070 |
2002-06-25 | 1,149 | 1,154 | 1,106 | 1,121 | 25,600 | 1,121 |
2002-06-24 | 1,100 | 1,136 | 1,075 | 1,134 | 42,100 | 1,134 |
2002-06-21 | 1,159 | 1,159 | 1,122 | 1,127 | 33,400 | 1,127 |
2002-06-20 | 1,120 | 1,190 | 1,090 | 1,165 | 59,000 | 1,165 |
2002-06-19 | 1,200 | 1,200 | 1,120 | 1,126 | 24,800 | 1,126 |
2002-06-18 | 1,200 | 1,200 | 1,155 | 1,189 | 30,100 | 1,189 |
2002-06-17 | 1,194 | 1,199 | 1,130 | 1,140 | 36,600 | 1,140 |
2002-06-14 | 1,201 | 1,215 | 1,194 | 1,194 | 90,200 | 1,194 |
2002-06-13 | 1,230 | 1,230 | 1,208 | 1,208 | 19,400 | 1,208 |
2002-06-12 | 1,245 | 1,245 | 1,216 | 1,228 | 19,200 | 1,228 |
2002-06-11 | 1,260 | 1,260 | 1,230 | 1,245 | 18,000 | 1,245 |
2002-06-10 | 1,271 | 1,285 | 1,240 | 1,240 | 47,200 | 1,240 |
2002-06-07 | 1,250 | 1,273 | 1,250 | 1,263 | 40,000 | 1,263 |
2002-06-06 | 1,316 | 1,336 | 1,300 | 1,300 | 25,700 | 1,300 |
2002-06-05 | 1,340 | 1,349 | 1,330 | 1,331 | 16,300 | 1,331 |
2002-06-04 | 1,336 | 1,340 | 1,320 | 1,336 | 39,300 | 1,336 |
2002-06-03 | 1,335 | 1,355 | 1,335 | 1,335 | 18,100 | 1,335 |
2002-05-31 | 1,342 | 1,360 | 1,335 | 1,335 | 15,900 | 1,335 |
2002-05-30 | 1,340 | 1,388 | 1,330 | 1,365 | 19,300 | 1,365 |
2002-05-29 | 1,348 | 1,348 | 1,331 | 1,338 | 15,700 | 1,338 |
2002-05-28 | 1,350 | 1,355 | 1,342 | 1,351 | 23,200 | 1,351 |
2002-05-27 | 1,351 | 1,351 | 1,340 | 1,340 | 33,600 | 1,340 |
2002-05-24 | 1,380 | 1,381 | 1,326 | 1,351 | 45,300 | 1,351 |
2002-05-23 | 1,402 | 1,425 | 1,375 | 1,385 | 44,700 | 1,385 |
2002-05-22 | 1,380 | 1,440 | 1,379 | 1,401 | 31,900 | 1,401 |
2002-05-21 | 1,370 | 1,390 | 1,360 | 1,380 | 58,200 | 1,380 |
2002-05-20 | 1,320 | 1,380 | 1,320 | 1,351 | 44,800 | 1,351 |
2002-05-17 | 1,369 | 1,370 | 1,320 | 1,320 | 43,100 | 1,320 |
2002-05-16 | 1,299 | 1,346 | 1,278 | 1,329 | 31,200 | 1,329 |
2002-05-15 | 1,279 | 1,301 | 1,279 | 1,292 | 48,800 | 1,292 |
2002-05-14 | 1,301 | 1,310 | 1,296 | 1,299 | 29,700 | 1,299 |
2002-05-13 | 1,297 | 1,319 | 1,297 | 1,315 | 23,500 | 1,315 |
2002-05-10 | 1,331 | 1,340 | 1,330 | 1,337 | 32,800 | 1,337 |
2002-05-09 | 1,385 | 1,400 | 1,350 | 1,351 | 50,100 | 1,351 |
2002-05-08 | 1,360 | 1,388 | 1,360 | 1,365 | 32,900 | 1,365 |
2002-05-07 | 1,400 | 1,400 | 1,356 | 1,365 | 28,800 | 1,365 |
2002-05-02 | 1,415 | 1,421 | 1,403 | 1,408 | 23,000 | 1,408 |
2002-05-01 | 1,412 | 1,426 | 1,412 | 1,421 | 26,300 | 1,421 |
2002-04-30 | 1,461 | 1,461 | 1,421 | 1,422 | 21,400 | 1,422 |
2002-04-26 | 1,480 | 1,480 | 1,420 | 1,441 | 23,100 | 1,441 |
2002-04-25 | 1,430 | 1,437 | 1,420 | 1,420 | 14,800 | 1,420 |
2002-04-24 | 1,420 | 1,430 | 1,420 | 1,420 | 39,500 | 1,420 |
2002-04-23 | 1,427 | 1,465 | 1,427 | 1,444 | 60,100 | 1,444 |
2002-04-22 | 1,460 | 1,500 | 1,410 | 1,487 | 35,200 | 1,487 |
2002-04-19 | 1,480 | 1,480 | 1,437 | 1,458 | 27,600 | 1,458 |
2002-04-18 | 1,474 | 1,496 | 1,460 | 1,483 | 21,000 | 1,483 |
2002-04-17 | 1,500 | 1,519 | 1,460 | 1,474 | 31,500 | 1,474 |
2002-04-16 | 1,450 | 1,480 | 1,440 | 1,475 | 27,500 | 1,475 |
2002-04-15 | 1,469 | 1,486 | 1,439 | 1,447 | 28,300 | 1,447 |
2002-04-12 | 1,490 | 1,520 | 1,459 | 1,519 | 31,100 | 1,519 |
2002-04-11 | 1,529 | 1,533 | 1,489 | 1,490 | 45,200 | 1,490 |
2002-04-10 | 1,482 | 1,544 | 1,482 | 1,485 | 57,900 | 1,485 |
2002-04-09 | 1,550 | 1,570 | 1,532 | 1,542 | 93,500 | 1,542 |
2002-04-08 | 1,490 | 1,547 | 1,475 | 1,532 | 71,000 | 1,532 |
2002-04-05 | 1,428 | 1,470 | 1,428 | 1,450 | 33,600 | 1,450 |
2002-04-04 | 1,460 | 1,479 | 1,448 | 1,448 | 38,200 | 1,448 |
2002-04-03 | 1,401 | 1,460 | 1,401 | 1,439 | 23,700 | 1,439 |
2002-04-02 | 1,405 | 1,439 | 1,405 | 1,430 | 10,400 | 1,430 |
2002-04-01 | 1,458 | 1,458 | 1,430 | 1,443 | 38,800 | 1,443 |
2002-03-29 | 1,445 | 1,471 | 1,445 | 1,456 | 25,100 | 1,456 |
2002-03-28 | 1,428 | 1,481 | 1,428 | 1,465 | 64,500 | 1,465 |
2002-03-27 | 1,457 | 1,457 | 1,420 | 1,448 | 45,600 | 1,448 |
2002-03-26 | 1,360 | 1,418 | 1,360 | 1,417 | 48,100 | 1,417 |
2002-03-25 | 1,430 | 1,455 | 1,365 | 1,378 | 46,000 | 1,378 |
2002-03-22 | 1,440 | 1,500 | 1,430 | 1,451 | 34,200 | 1,451 |
2002-03-20 | 1,500 | 1,500 | 1,476 | 1,500 | 42,500 | 1,500 |
2002-03-19 | 1,549 | 1,556 | 1,483 | 1,500 | 47,300 | 1,500 |
2002-03-18 | 1,580 | 1,590 | 1,550 | 1,550 | 91,600 | 1,550 |
2002-03-15 | 1,537 | 1,580 | 1,520 | 1,550 | 54,200 | 1,550 |
2002-03-14 | 1,453 | 1,524 | 1,450 | 1,507 | 72,900 | 1,507 |
2002-03-13 | 1,533 | 1,585 | 1,465 | 1,470 | 111,100 | 1,470 |
2002-03-12 | 1,670 | 1,670 | 1,560 | 1,593 | 202,600 | 1,593 |
2002-03-11 | 1,538 | 1,670 | 1,490 | 1,670 | 337,100 | 1,670 |
2002-03-08 | 1,328 | 1,508 | 1,320 | 1,508 | 357,900 | 1,508 |
2002-03-07 | 1,264 | 1,310 | 1,233 | 1,308 | 113,900 | 1,308 |
2002-03-06 | 1,210 | 1,270 | 1,210 | 1,224 | 79,300 | 1,224 |
2002-03-05 | 1,320 | 1,320 | 1,255 | 1,270 | 102,800 | 1,270 |
2002-03-04 | 1,186 | 1,270 | 1,184 | 1,250 | 135,300 | 1,250 |
2002-03-01 | 1,110 | 1,150 | 1,095 | 1,146 | 76,300 | 1,146 |
2002-02-28 | 1,089 | 1,122 | 1,080 | 1,100 | 106,900 | 1,100 |
2002-02-27 | 1,030 | 1,060 | 1,030 | 1,059 | 52,300 | 1,059 |
2002-02-26 | 1,060 | 1,069 | 1,034 | 1,060 | 41,300 | 1,060 |
2002-02-25 | 1,057 | 1,070 | 1,040 | 1,058 | 98,500 | 1,058 |
2002-02-22 | 960 | 1,070 | 953 | 1,065 | 81,400 | 1,065 |
2002-02-21 | 973 | 980 | 960 | 970 | 11,500 | 970 |
2002-02-20 | 950 | 963 | 942 | 963 | 11,200 | 963 |
2002-02-19 | 968 | 968 | 946 | 946 | 8,900 | 946 |
2002-02-18 | 940 | 968 | 930 | 968 | 6,700 | 968 |
2002-02-15 | 955 | 970 | 940 | 970 | 50,900 | 970 |
2002-02-14 | 950 | 960 | 936 | 936 | 26,400 | 936 |
2002-02-13 | 933 | 946 | 917 | 946 | 20,500 | 946 |
2002-02-12 | 911 | 935 | 911 | 935 | 15,900 | 935 |
2002-02-08 | 919 | 919 | 900 | 919 | 28,300 | 919 |
2002-02-07 | 898 | 925 | 892 | 925 | 39,500 | 925 |
2002-02-06 | 890 | 920 | 890 | 902 | 18,700 | 902 |
2002-02-05 | 910 | 910 | 901 | 910 | 23,500 | 910 |
2002-02-04 | 940 | 950 | 930 | 945 | 25,800 | 945 |
2002-02-01 | 960 | 976 | 939 | 940 | 19,700 | 940 |
2002-01-31 | 942 | 950 | 939 | 950 | 22,800 | 950 |
2002-01-30 | 930 | 943 | 930 | 943 | 28,100 | 943 |
2002-01-29 | 930 | 950 | 930 | 943 | 38,400 | 943 |
2002-01-28 | 948 | 948 | 930 | 940 | 19,100 | 940 |
2002-01-25 | 951 | 957 | 935 | 950 | 59,300 | 950 |
2002-01-24 | 970 | 970 | 951 | 953 | 37,800 | 953 |
2002-01-23 | 990 | 990 | 970 | 985 | 16,000 | 985 |
2002-01-22 | 992 | 992 | 980 | 980 | 35,300 | 980 |
2002-01-21 | 983 | 993 | 974 | 990 | 35,500 | 990 |
2002-01-18 | 960 | 994 | 960 | 973 | 31,500 | 973 |
2002-01-17 | 980 | 983 | 952 | 965 | 49,100 | 965 |
2002-01-16 | 985 | 999 | 975 | 999 | 14,000 | 999 |
2002-01-15 | 969 | 981 | 966 | 981 | 30,100 | 981 |
2002-01-11 | 995 | 998 | 980 | 981 | 38,200 | 981 |
2002-01-10 | 1,000 | 1,002 | 985 | 1,000 | 25,600 | 1,000 |
2002-01-09 | 980 | 1,001 | 980 | 1,000 | 19,300 | 1,000 |
2002-01-08 | 1,000 | 1,004 | 971 | 1,000 | 33,400 | 1,000 |
2002-01-07 | 1,010 | 1,010 | 995 | 996 | 46,800 | 996 |
2002-01-04 | 1,013 | 1,013 | 995 | 1,000 | 17,900 | 1,000 |
分割・併合履歴 : [1992-03-26]1株→1.1株 [1991-10-28]1株→1.5株 [1990-10-26]1株→1.5株 [1987-10-28]1株→1.1株