7994 (株)オカムラ の時系列データ [2015年度]
日付 | 始値 | 高値 | 安値 | 終値 | 出来高 | 調整後終値 |
---|---|---|---|---|---|---|
2015-12-30 | 1,215 | 1,225 | 1,199 | 1,210 | 88,100 | 1,210 |
2015-12-29 | 1,177 | 1,221 | 1,177 | 1,213 | 198,000 | 1,213 |
2015-12-28 | 1,208 | 1,210 | 1,182 | 1,195 | 129,500 | 1,195 |
2015-12-25 | 1,193 | 1,216 | 1,187 | 1,204 | 82,100 | 1,204 |
2015-12-24 | 1,230 | 1,231 | 1,190 | 1,193 | 138,700 | 1,193 |
2015-12-22 | 1,224 | 1,236 | 1,218 | 1,224 | 103,900 | 1,224 |
2015-12-21 | 1,233 | 1,255 | 1,218 | 1,231 | 324,600 | 1,231 |
2015-12-18 | 1,249 | 1,271 | 1,232 | 1,237 | 373,900 | 1,237 |
2015-12-17 | 1,225 | 1,270 | 1,225 | 1,254 | 469,400 | 1,254 |
2015-12-16 | 1,210 | 1,220 | 1,188 | 1,212 | 209,200 | 1,212 |
2015-12-15 | 1,199 | 1,218 | 1,194 | 1,196 | 194,300 | 1,196 |
2015-12-14 | 1,187 | 1,199 | 1,178 | 1,198 | 156,400 | 1,198 |
2015-12-11 | 1,200 | 1,231 | 1,194 | 1,205 | 326,200 | 1,205 |
2015-12-10 | 1,200 | 1,225 | 1,195 | 1,214 | 380,100 | 1,214 |
2015-12-09 | 1,227 | 1,247 | 1,193 | 1,198 | 282,400 | 1,198 |
2015-12-08 | 1,234 | 1,238 | 1,216 | 1,223 | 159,700 | 1,223 |
2015-12-07 | 1,236 | 1,251 | 1,229 | 1,229 | 141,700 | 1,229 |
2015-12-04 | 1,223 | 1,235 | 1,219 | 1,226 | 168,200 | 1,226 |
2015-12-03 | 1,248 | 1,255 | 1,237 | 1,244 | 137,100 | 1,244 |
2015-12-02 | 1,257 | 1,260 | 1,227 | 1,243 | 219,100 | 1,243 |
2015-12-01 | 1,213 | 1,257 | 1,212 | 1,257 | 408,800 | 1,257 |
2015-11-30 | 1,199 | 1,214 | 1,186 | 1,210 | 228,800 | 1,210 |
2015-11-27 | 1,199 | 1,208 | 1,185 | 1,195 | 146,000 | 1,195 |
2015-11-26 | 1,214 | 1,219 | 1,192 | 1,198 | 192,000 | 1,198 |
2015-11-25 | 1,210 | 1,218 | 1,201 | 1,213 | 137,400 | 1,213 |
2015-11-24 | 1,190 | 1,216 | 1,189 | 1,210 | 252,700 | 1,210 |
2015-11-20 | 1,182 | 1,200 | 1,181 | 1,200 | 206,200 | 1,200 |
2015-11-19 | 1,183 | 1,197 | 1,155 | 1,181 | 108,700 | 1,181 |
2015-11-18 | 1,192 | 1,199 | 1,174 | 1,176 | 144,700 | 1,176 |
2015-11-17 | 1,200 | 1,200 | 1,174 | 1,189 | 217,500 | 1,189 |
2015-11-16 | 1,154 | 1,196 | 1,150 | 1,190 | 269,900 | 1,190 |
2015-11-13 | 1,157 | 1,180 | 1,146 | 1,179 | 155,700 | 1,179 |
2015-11-12 | 1,150 | 1,188 | 1,149 | 1,175 | 345,200 | 1,175 |
2015-11-11 | 1,150 | 1,159 | 1,135 | 1,146 | 200,900 | 1,146 |
2015-11-10 | 1,129 | 1,152 | 1,129 | 1,144 | 129,800 | 1,144 |
2015-11-09 | 1,124 | 1,149 | 1,124 | 1,142 | 177,400 | 1,142 |
2015-11-06 | 1,128 | 1,135 | 1,093 | 1,120 | 244,500 | 1,120 |
2015-11-05 | 1,154 | 1,184 | 1,098 | 1,098 | 462,100 | 1,098 |
2015-11-04 | 1,127 | 1,163 | 1,123 | 1,144 | 366,800 | 1,144 |
2015-11-02 | 1,110 | 1,117 | 1,100 | 1,109 | 106,300 | 1,109 |
2015-10-30 | 1,120 | 1,139 | 1,107 | 1,127 | 158,500 | 1,127 |
2015-10-29 | 1,100 | 1,143 | 1,092 | 1,118 | 629,200 | 1,118 |
2015-10-28 | 1,091 | 1,106 | 1,081 | 1,105 | 164,900 | 1,105 |
2015-10-27 | 1,117 | 1,118 | 1,089 | 1,090 | 92,900 | 1,090 |
2015-10-26 | 1,131 | 1,131 | 1,109 | 1,116 | 101,200 | 1,116 |
2015-10-23 | 1,103 | 1,112 | 1,096 | 1,108 | 96,500 | 1,108 |
2015-10-22 | 1,086 | 1,099 | 1,084 | 1,096 | 67,400 | 1,096 |
2015-10-21 | 1,078 | 1,090 | 1,064 | 1,087 | 160,900 | 1,087 |
2015-10-20 | 1,080 | 1,084 | 1,066 | 1,080 | 83,300 | 1,080 |
2015-10-19 | 1,065 | 1,080 | 1,057 | 1,065 | 86,800 | 1,065 |
2015-10-16 | 1,096 | 1,104 | 1,062 | 1,065 | 124,900 | 1,065 |
2015-10-15 | 1,069 | 1,103 | 1,069 | 1,091 | 190,300 | 1,091 |
2015-10-14 | 1,070 | 1,079 | 1,056 | 1,063 | 127,600 | 1,063 |
2015-10-13 | 1,053 | 1,083 | 1,053 | 1,083 | 106,100 | 1,083 |
2015-10-09 | 1,062 | 1,071 | 1,045 | 1,068 | 126,000 | 1,068 |
2015-10-08 | 1,091 | 1,102 | 1,052 | 1,057 | 165,600 | 1,057 |
2015-10-07 | 1,082 | 1,098 | 1,072 | 1,093 | 105,800 | 1,093 |
2015-10-06 | 1,088 | 1,090 | 1,067 | 1,082 | 100,600 | 1,082 |
2015-10-05 | 1,085 | 1,085 | 1,064 | 1,076 | 73,200 | 1,076 |
2015-10-02 | 1,080 | 1,100 | 1,065 | 1,071 | 149,000 | 1,071 |
2015-10-01 | 1,110 | 1,136 | 1,083 | 1,090 | 251,800 | 1,090 |
2015-09-30 | 1,048 | 1,083 | 1,045 | 1,076 | 160,600 | 1,076 |
2015-09-29 | 1,044 | 1,044 | 1,011 | 1,023 | 123,100 | 1,023 |
2015-09-28 | 1,048 | 1,060 | 1,037 | 1,058 | 127,500 | 1,058 |
2015-09-25 | 1,046 | 1,053 | 1,012 | 1,053 | 148,300 | 1,053 |
2015-09-24 | 1,000 | 1,061 | 1,000 | 1,042 | 213,900 | 1,042 |
2015-09-18 | 1,030 | 1,047 | 1,022 | 1,033 | 98,500 | 1,033 |
2015-09-17 | 1,059 | 1,059 | 1,041 | 1,053 | 85,500 | 1,053 |
2015-09-16 | 1,035 | 1,075 | 1,035 | 1,055 | 109,300 | 1,055 |
2015-09-15 | 1,055 | 1,067 | 1,022 | 1,023 | 122,700 | 1,023 |
2015-09-14 | 1,045 | 1,062 | 1,039 | 1,047 | 107,200 | 1,047 |
2015-09-11 | 1,000 | 1,044 | 993 | 1,037 | 228,500 | 1,037 |
2015-09-10 | 982 | 1,034 | 982 | 1,030 | 94,700 | 1,030 |
2015-09-09 | 1,029 | 1,039 | 985 | 1,000 | 219,000 | 1,000 |
2015-09-08 | 1,013 | 1,044 | 1,001 | 1,001 | 116,100 | 1,001 |
2015-09-07 | 1,000 | 1,019 | 992 | 1,017 | 33,600 | 1,017 |
2015-09-04 | 1,029 | 1,032 | 996 | 1,012 | 76,700 | 1,012 |
2015-09-03 | 1,035 | 1,047 | 1,006 | 1,009 | 91,600 | 1,009 |
2015-09-02 | 1,013 | 1,042 | 1,006 | 1,027 | 131,500 | 1,027 |
2015-09-01 | 1,057 | 1,066 | 1,032 | 1,032 | 110,100 | 1,032 |
2015-08-31 | 1,084 | 1,091 | 1,064 | 1,087 | 119,100 | 1,087 |
2015-08-28 | 1,042 | 1,084 | 1,025 | 1,072 | 141,600 | 1,072 |
2015-08-27 | 1,025 | 1,034 | 996 | 997 | 178,800 | 997 |
2015-08-26 | 982 | 1,028 | 981 | 1,020 | 137,000 | 1,020 |
2015-08-25 | 929 | 1,027 | 927 | 979 | 169,900 | 979 |
2015-08-24 | 1,038 | 1,062 | 1,004 | 1,004 | 142,900 | 1,004 |
2015-08-21 | 1,081 | 1,103 | 1,068 | 1,068 | 124,900 | 1,068 |
2015-08-20 | 1,110 | 1,136 | 1,110 | 1,110 | 71,500 | 1,110 |
2015-08-19 | 1,128 | 1,133 | 1,116 | 1,121 | 60,200 | 1,121 |
2015-08-18 | 1,143 | 1,146 | 1,127 | 1,131 | 60,800 | 1,131 |
2015-08-17 | 1,140 | 1,150 | 1,133 | 1,143 | 87,600 | 1,143 |
2015-08-14 | 1,140 | 1,148 | 1,125 | 1,143 | 137,300 | 1,143 |
2015-08-13 | 1,140 | 1,155 | 1,129 | 1,149 | 93,300 | 1,149 |
2015-08-12 | 1,131 | 1,155 | 1,131 | 1,150 | 138,300 | 1,150 |
2015-08-11 | 1,155 | 1,162 | 1,138 | 1,147 | 101,000 | 1,147 |
2015-08-10 | 1,134 | 1,163 | 1,127 | 1,153 | 135,100 | 1,153 |
2015-08-07 | 1,128 | 1,151 | 1,121 | 1,144 | 115,400 | 1,144 |
2015-08-06 | 1,144 | 1,161 | 1,132 | 1,136 | 221,300 | 1,136 |
2015-08-05 | 1,180 | 1,184 | 1,145 | 1,163 | 229,200 | 1,163 |
2015-08-04 | 1,154 | 1,200 | 1,154 | 1,180 | 441,200 | 1,180 |
2015-08-03 | 1,103 | 1,124 | 1,093 | 1,120 | 94,800 | 1,120 |
2015-07-31 | 1,110 | 1,110 | 1,089 | 1,103 | 72,800 | 1,103 |
2015-07-30 | 1,117 | 1,126 | 1,099 | 1,104 | 86,800 | 1,104 |
2015-07-29 | 1,119 | 1,134 | 1,107 | 1,117 | 103,500 | 1,117 |
2015-07-28 | 1,094 | 1,124 | 1,084 | 1,115 | 138,700 | 1,115 |
2015-07-27 | 1,090 | 1,100 | 1,078 | 1,093 | 110,600 | 1,093 |
2015-07-24 | 1,096 | 1,104 | 1,088 | 1,100 | 66,800 | 1,100 |
2015-07-23 | 1,087 | 1,105 | 1,081 | 1,104 | 52,200 | 1,104 |
2015-07-22 | 1,100 | 1,101 | 1,086 | 1,088 | 56,200 | 1,088 |
2015-07-21 | 1,109 | 1,113 | 1,096 | 1,109 | 70,400 | 1,109 |
2015-07-17 | 1,095 | 1,113 | 1,085 | 1,109 | 104,000 | 1,109 |
2015-07-16 | 1,092 | 1,100 | 1,081 | 1,097 | 99,700 | 1,097 |
2015-07-15 | 1,094 | 1,094 | 1,072 | 1,089 | 135,800 | 1,089 |
2015-07-14 | 1,074 | 1,086 | 1,054 | 1,086 | 169,200 | 1,086 |
2015-07-13 | 1,028 | 1,069 | 1,013 | 1,064 | 158,700 | 1,064 |
2015-07-10 | 1,034 | 1,052 | 1,028 | 1,033 | 82,500 | 1,033 |
2015-07-09 | 1,022 | 1,036 | 991 | 1,032 | 119,900 | 1,032 |
2015-07-08 | 1,068 | 1,074 | 1,046 | 1,046 | 139,900 | 1,046 |
2015-07-07 | 1,070 | 1,092 | 1,070 | 1,073 | 116,700 | 1,073 |
2015-07-06 | 1,076 | 1,085 | 1,051 | 1,053 | 129,800 | 1,053 |
2015-07-03 | 1,096 | 1,103 | 1,086 | 1,089 | 72,800 | 1,089 |
2015-07-02 | 1,100 | 1,100 | 1,085 | 1,092 | 89,000 | 1,092 |
2015-07-01 | 1,077 | 1,093 | 1,071 | 1,089 | 109,300 | 1,089 |
2015-06-30 | 1,054 | 1,076 | 1,054 | 1,067 | 119,100 | 1,067 |
2015-06-29 | 1,045 | 1,082 | 1,029 | 1,052 | 229,800 | 1,052 |
2015-06-26 | 1,100 | 1,100 | 1,055 | 1,056 | 359,700 | 1,056 |
2015-06-25 | 1,118 | 1,120 | 1,094 | 1,094 | 256,900 | 1,094 |
2015-06-24 | 1,150 | 1,150 | 1,123 | 1,125 | 239,600 | 1,125 |
2015-06-23 | 1,136 | 1,148 | 1,118 | 1,141 | 135,000 | 1,141 |
2015-06-22 | 1,141 | 1,155 | 1,119 | 1,128 | 191,700 | 1,128 |
2015-06-19 | 1,134 | 1,162 | 1,130 | 1,150 | 174,700 | 1,150 |
2015-06-18 | 1,131 | 1,135 | 1,123 | 1,125 | 84,400 | 1,125 |
2015-06-17 | 1,126 | 1,136 | 1,122 | 1,133 | 92,100 | 1,133 |
2015-06-16 | 1,128 | 1,141 | 1,120 | 1,125 | 102,500 | 1,125 |
2015-06-15 | 1,112 | 1,139 | 1,103 | 1,125 | 153,000 | 1,125 |
2015-06-12 | 1,127 | 1,134 | 1,113 | 1,124 | 226,800 | 1,124 |
2015-06-11 | 1,103 | 1,145 | 1,091 | 1,127 | 150,900 | 1,127 |
2015-06-10 | 1,110 | 1,120 | 1,099 | 1,100 | 133,100 | 1,100 |
2015-06-09 | 1,083 | 1,124 | 1,081 | 1,101 | 280,400 | 1,101 |
2015-06-08 | 1,085 | 1,099 | 1,083 | 1,091 | 89,000 | 1,091 |
2015-06-05 | 1,064 | 1,092 | 1,064 | 1,088 | 97,100 | 1,088 |
2015-06-04 | 1,082 | 1,082 | 1,064 | 1,077 | 85,300 | 1,077 |
2015-06-03 | 1,080 | 1,082 | 1,069 | 1,078 | 83,100 | 1,078 |
2015-06-02 | 1,082 | 1,089 | 1,072 | 1,081 | 87,200 | 1,081 |
2015-06-01 | 1,082 | 1,085 | 1,066 | 1,082 | 81,500 | 1,082 |
2015-05-29 | 1,080 | 1,098 | 1,070 | 1,082 | 139,000 | 1,082 |
2015-05-28 | 1,081 | 1,081 | 1,062 | 1,072 | 69,100 | 1,072 |
2015-05-27 | 1,079 | 1,097 | 1,058 | 1,075 | 208,500 | 1,075 |
2015-05-26 | 1,078 | 1,088 | 1,045 | 1,060 | 180,800 | 1,060 |
2015-05-25 | 1,061 | 1,079 | 1,061 | 1,069 | 60,200 | 1,069 |
2015-05-22 | 1,075 | 1,082 | 1,056 | 1,068 | 48,900 | 1,068 |
2015-05-21 | 1,090 | 1,096 | 1,066 | 1,072 | 122,800 | 1,072 |
2015-05-20 | 1,073 | 1,092 | 1,064 | 1,090 | 165,700 | 1,090 |
2015-05-19 | 1,050 | 1,080 | 1,045 | 1,074 | 306,000 | 1,074 |
2015-05-18 | 1,039 | 1,058 | 1,028 | 1,045 | 166,400 | 1,045 |
2015-05-15 | 1,041 | 1,047 | 1,025 | 1,033 | 140,100 | 1,033 |
2015-05-14 | 1,034 | 1,049 | 1,022 | 1,031 | 251,700 | 1,031 |
2015-05-13 | 1,026 | 1,044 | 1,014 | 1,027 | 184,800 | 1,027 |
2015-05-12 | 1,004 | 1,035 | 1,004 | 1,026 | 237,900 | 1,026 |
2015-05-11 | 960 | 1,048 | 957 | 1,017 | 467,300 | 1,017 |
2015-05-08 | 929 | 959 | 922 | 954 | 197,500 | 954 |
2015-05-07 | 923 | 955 | 912 | 919 | 233,800 | 919 |
2015-05-01 | 926 | 930 | 912 | 929 | 183,800 | 929 |
2015-04-30 | 933 | 939 | 926 | 934 | 163,700 | 934 |
2015-04-28 | 941 | 941 | 931 | 938 | 117,000 | 938 |
2015-04-27 | 940 | 943 | 932 | 943 | 90,800 | 943 |
2015-04-24 | 943 | 950 | 937 | 944 | 68,700 | 944 |
2015-04-23 | 955 | 955 | 942 | 947 | 68,400 | 947 |
2015-04-22 | 950 | 961 | 939 | 944 | 130,500 | 944 |
2015-04-21 | 935 | 945 | 925 | 941 | 166,500 | 941 |
2015-04-20 | 956 | 956 | 939 | 941 | 99,100 | 941 |
2015-04-17 | 947 | 963 | 937 | 956 | 93,800 | 956 |
2015-04-16 | 949 | 958 | 941 | 958 | 73,300 | 958 |
2015-04-15 | 955 | 955 | 943 | 950 | 120,500 | 950 |
2015-04-14 | 939 | 958 | 939 | 956 | 120,300 | 956 |
2015-04-13 | 940 | 954 | 935 | 945 | 129,000 | 945 |
2015-04-10 | 952 | 964 | 941 | 949 | 190,500 | 949 |
2015-04-09 | 946 | 962 | 946 | 949 | 113,100 | 949 |
2015-04-08 | 958 | 969 | 950 | 955 | 93,500 | 955 |
2015-04-07 | 960 | 963 | 950 | 953 | 101,900 | 953 |
2015-04-06 | 953 | 972 | 950 | 961 | 91,100 | 961 |
2015-04-03 | 965 | 969 | 956 | 963 | 69,000 | 963 |
2015-04-02 | 949 | 973 | 949 | 964 | 188,400 | 964 |
2015-04-01 | 964 | 964 | 942 | 948 | 280,400 | 948 |
2015-03-31 | 935 | 967 | 934 | 966 | 363,000 | 966 |
2015-03-30 | 920 | 934 | 918 | 923 | 282,200 | 923 |
2015-03-27 | 924 | 957 | 907 | 915 | 206,600 | 915 |
2015-03-26 | 936 | 940 | 929 | 935 | 205,400 | 935 |
2015-03-25 | 937 | 941 | 929 | 934 | 99,500 | 934 |
2015-03-24 | 932 | 941 | 927 | 938 | 182,200 | 938 |
2015-03-23 | 906 | 937 | 899 | 936 | 281,000 | 936 |
2015-03-20 | 910 | 912 | 887 | 899 | 265,400 | 899 |
2015-03-19 | 910 | 928 | 910 | 912 | 176,200 | 912 |
2015-03-18 | 896 | 920 | 896 | 916 | 240,000 | 916 |
2015-03-17 | 900 | 907 | 887 | 905 | 182,700 | 905 |
2015-03-16 | 899 | 910 | 898 | 900 | 288,300 | 900 |
2015-03-13 | 890 | 900 | 877 | 899 | 403,800 | 899 |
2015-03-12 | 889 | 889 | 879 | 882 | 95,000 | 882 |
2015-03-11 | 879 | 886 | 877 | 879 | 79,000 | 879 |
2015-03-10 | 894 | 898 | 881 | 882 | 180,200 | 882 |
2015-03-09 | 890 | 893 | 883 | 892 | 135,700 | 892 |
2015-03-06 | 894 | 895 | 882 | 891 | 165,700 | 891 |
2015-03-05 | 888 | 895 | 884 | 888 | 113,800 | 888 |
2015-03-04 | 872 | 886 | 860 | 885 | 407,700 | 885 |
2015-03-03 | 880 | 883 | 852 | 872 | 520,900 | 872 |
2015-03-02 | 866 | 880 | 852 | 879 | 578,200 | 879 |
2015-02-27 | 874 | 885 | 855 | 867 | 1,041,200 | 867 |
2015-02-26 | 867 | 876 | 842 | 871 | 686,100 | 871 |
2015-02-25 | 868 | 869 | 855 | 860 | 132,400 | 860 |
2015-02-24 | 860 | 875 | 849 | 866 | 461,400 | 866 |
2015-02-23 | 879 | 879 | 855 | 864 | 352,800 | 864 |
2015-02-20 | 865 | 875 | 843 | 869 | 381,100 | 869 |
2015-02-19 | 857 | 868 | 850 | 860 | 292,400 | 860 |
2015-02-18 | 861 | 880 | 854 | 858 | 347,000 | 858 |
2015-02-17 | 866 | 877 | 848 | 861 | 901,700 | 861 |
2015-02-16 | 851 | 872 | 845 | 866 | 912,400 | 866 |
2015-02-13 | 874 | 879 | 834 | 844 | 505,900 | 844 |
2015-02-12 | 876 | 890 | 862 | 881 | 289,000 | 881 |
2015-02-10 | 866 | 875 | 848 | 861 | 429,700 | 861 |
2015-02-09 | 851 | 866 | 824 | 863 | 751,600 | 863 |
2015-02-06 | 831 | 848 | 821 | 840 | 583,300 | 840 |
2015-02-05 | 811 | 846 | 811 | 831 | 577,400 | 831 |
2015-02-04 | 808 | 850 | 799 | 811 | 712,200 | 811 |
2015-02-03 | 860 | 862 | 837 | 839 | 73,100 | 839 |
2015-02-02 | 857 | 874 | 846 | 859 | 100,300 | 859 |
2015-01-30 | 869 | 870 | 861 | 867 | 74,500 | 867 |
2015-01-29 | 867 | 871 | 857 | 860 | 52,200 | 860 |
2015-01-28 | 860 | 880 | 855 | 873 | 135,700 | 873 |
2015-01-27 | 855 | 864 | 850 | 864 | 65,600 | 864 |
2015-01-26 | 841 | 850 | 839 | 845 | 61,700 | 845 |
2015-01-23 | 844 | 852 | 836 | 851 | 73,800 | 851 |
2015-01-22 | 838 | 838 | 824 | 838 | 68,600 | 838 |
2015-01-21 | 862 | 862 | 840 | 843 | 198,400 | 843 |
2015-01-20 | 848 | 868 | 843 | 862 | 291,600 | 862 |
2015-01-19 | 860 | 860 | 848 | 850 | 71,800 | 850 |
2015-01-16 | 840 | 854 | 833 | 853 | 216,400 | 853 |
2015-01-15 | 847 | 849 | 837 | 846 | 213,300 | 846 |
2015-01-14 | 820 | 840 | 820 | 836 | 124,600 | 836 |
2015-01-13 | 812 | 820 | 804 | 819 | 88,500 | 819 |
2015-01-09 | 830 | 832 | 815 | 821 | 100,500 | 821 |
2015-01-08 | 843 | 847 | 822 | 827 | 230,800 | 827 |
2015-01-07 | 810 | 826 | 809 | 813 | 135,500 | 813 |
2015-01-06 | 834 | 838 | 817 | 818 | 139,500 | 818 |
2015-01-05 | 849 | 859 | 839 | 846 | 68,100 | 846 |
分割・併合履歴 : [1988-11-26]1株→1.06株 [1986-11-26]1株→1.2株 [1984-05-28]1株→1.05株