History of CCASS shareholding
Participant: HUNG SING SECURITIES LTD
Holdings history
| Date | Trade date | Closing price | Holdings | Change | % of o/s | Value (HK$) |
|---|---|---|---|---|---|---|
| 2025-10-14 | 2025-10-10 | 0.465 | 68,800 | +0 | 0.00% | 31,992 |
| 2025-10-13 | 2025-10-09 | 0.510 | 68,800 | +0 | 0.00% | 35,088 |
| 2025-10-10 | 2025-10-08 | 0.460 | 68,800 | -24,000 | 0.00% | 31,648 |
| 2025-10-08 | 2025-10-03 | 0.465 | 92,800 | +24,000 | 0.00% | 43,152 |
| 2025-09-26 | 2025-09-24 | 0.530 | 68,800 | -24,000 | 0.00% | 36,464 |
| 2025-09-25 | 2025-09-23 | 0.410 | 92,800 | -216,000 | 0.00% | 38,048 |
| 2025-09-24 | 2025-09-22 | 0.320 | 308,800 | -48,000 | 0.00% | 98,816 |
| 2025-09-23 | 2025-09-19 | 0.310 | 356,800 | +288,000 | 0.00% | 110,608 |
| 2025-09-19 | 2025-09-17 | 0.320 | 68,800 | -48,000 | 0.00% | 22,016 |
| 2025-09-18 | 2025-09-16 | 0.325 | 116,800 | +48,000 | 0.00% | 37,960 |
| 2025-09-16 | 2025-09-12 | 0.310 | 68,800 | -96,000 | 0.00% | 21,328 |
| 2025-09-15 | 2025-09-11 | 0.290 | 164,800 | +96,000 | 0.00% | 47,792 |
| 2025-09-12 | 2025-09-10 | 0.295 | 68,800 | -48,000 | 0.00% | 20,296 |
| 2025-09-11 | 2025-09-09 | 0.290 | 116,800 | -24,000 | 0.00% | 33,872 |
| 2025-09-10 | 2025-09-08 | 0.280 | 140,800 | +72,000 | 0.00% | 39,424 |
| 2025-08-15 | 2025-08-13 | 0.227 | 68,800 | -48,000 | 0.00% | 15,618 |
| 2025-08-14 | 2025-08-12 | 0.241 | 116,800 | -24,000 | 0.00% | 28,149 |
| 2025-08-12 | 2025-08-08 | 0.265 | 140,800 | +24,000 | 0.00% | 37,312 |
| 2025-08-08 | 2025-08-06 | 0.246 | 116,800 | +48,000 | 0.00% | 28,733 |
| 2025-08-05 | 2025-08-01 | 0.240 | 68,800 | -72,000 | 0.00% | 16,512 |
| 2025-08-04 | 2025-07-31 | 0.260 | 140,800 | -24,000 | 0.00% | 36,608 |
| 2025-07-31 | 2025-07-29 | 0.250 | 164,800 | +96,000 | 0.00% | 41,200 |
| 2025-07-29 | 2025-07-25 | 0.290 | 68,800 | -72,000 | 0.00% | 19,952 |
| 2025-07-25 | 2025-07-23 | 0.310 | 140,800 | -48,000 | 0.00% | 43,648 |
| 2025-07-24 | 2025-07-22 | 0.315 | 188,800 | +120,000 | 0.00% | 59,472 |
| 2025-07-22 | 2025-07-18 | 0.300 | 68,800 | -312,000 | 0.00% | 20,640 |
| 2025-07-21 | 2025-07-17 | 0.285 | 380,800 | +312,000 | 0.01% | 108,528 |
| 2025-07-17 | 2025-07-15 | 0.295 | 68,800 | -192,000 | 0.00% | 20,296 |
| 2025-07-16 | 2025-07-14 | 0.305 | 260,800 | -264,000 | 0.00% | 79,544 |
| 2025-07-15 | 2025-07-11 | 0.300 | 524,800 | +408,000 | 0.01% | 157,440 |
| 2025-07-14 | 2025-07-10 | 0.305 | 116,800 | +48,000 | 0.00% | 35,624 |
| 2025-07-11 | 2025-07-09 | 0.305 | 68,800 | -48,000 | 0.00% | 20,984 |
| 2025-07-10 | 2025-07-08 | 0.300 | 116,800 | -72,000 | 0.00% | 35,040 |
| 2025-07-09 | 2025-07-07 | 0.295 | 188,800 | +120,000 | 0.00% | 55,696 |
| 2025-07-07 | 2025-07-03 | 0.325 | 68,800 | -48,000 | 0.00% | 22,360 |
| 2025-07-04 | 2025-07-02 | 0.320 | 116,800 | -24,000 | 0.00% | 37,376 |
| 2025-07-03 | 2025-06-30 | 0.300 | 140,800 | +72,000 | 0.00% | 42,240 |
| 2025-07-02 | 2025-06-27 | 0.290 | 68,800 | -72,000 | 0.00% | 19,952 |
| 2025-06-30 | 2025-06-26 | 0.285 | 140,800 | +24,000 | 0.00% | 40,128 |
| 2025-06-27 | 2025-06-25 | 0.305 | 116,800 | +48,000 | 0.00% | 35,624 |
| 2025-06-19 | 2025-06-17 | 0.300 | 68,800 | -96,000 | 0.00% | 20,640 |
| 2025-06-18 | 2025-06-16 | 0.310 | 164,800 | +96,000 | 0.00% | 51,088 |
| 2025-06-12 | 2025-06-10 | 0.470 | 68,800 | -24,000 | 0.00% | 32,336 |
| 2025-06-11 | 2025-06-09 | 0.435 | 92,800 | +24,000 | 0.00% | 40,368 |
| 2024-08-12 | 2024-08-08 | 0.169 | 68,800 | -48,000 | 0.00% | 11,627 |
| 2024-08-09 | 2024-08-07 | 0.167 | 116,800 | +48,000 | 0.00% | 19,506 |
| 2023-09-14 | 2023-09-12 | 0.107 | 68,800 | -192,000 | 0.00% | 7,362 |
| 2023-09-13 | 2023-09-11 | 0.105 | 260,800 | +192,000 | 0.00% | 27,384 |
| 2023-09-07 | 2023-09-05 | 0.130 | 68,800 | -96,000 | 0.00% | 8,944 |
| 2023-09-06 | 2023-09-04 | 0.121 | 164,800 | +96,000 | 0.00% | 19,941 |
| 2023-09-04 | 2023-08-30 | 0.115 | 68,800 | -96,000 | 0.00% | 7,912 |
| 2023-08-31 | 2023-08-29 | 0.115 | 164,800 | +96,000 | 0.00% | 18,952 |
| 2023-08-30 | 2023-08-28 | 0.112 | 68,800 | -96,000 | 0.00% | 7,706 |
| 2023-08-29 | 2023-08-25 | 0.120 | 164,800 | +96,000 | 0.00% | 19,776 |
| 2023-07-28 | 2023-07-26 | 0.108 | 68,800 | -96,000 | 0.00% | 7,430 |
| 2023-07-26 | 2023-07-24 | 0.100 | 164,800 | -96,000 | 0.00% | 16,480 |
| 2023-07-25 | 2023-07-21 | 0.108 | 260,800 | +192,000 | 0.00% | 28,166 |
| 2023-07-24 | 2023-07-20 | 0.113 | 68,800 | -96,000 | 0.00% | 7,774 |
| 2023-07-21 | 2023-07-19 | 0.114 | 164,800 | +96,000 | 0.00% | 18,787 |
| 2023-07-20 | 2023-07-18 | 0.113 | 68,800 | -192,000 | 0.00% | 7,774 |
| 2023-07-19 | 2023-07-14 | 0.112 | 260,800 | +192,000 | 0.00% | 29,210 |
| 2023-06-19 | 2023-06-15 | 0.108 | 68,800 | -96,000 | 0.00% | 7,430 |
| 2023-06-16 | 2023-06-14 | 0.105 | 164,800 | +96,000 | 0.00% | 17,304 |
| 2023-05-30 | 2023-05-25 | 0.123 | 68,800 | -288,000 | 0.00% | 8,462 |
| 2023-05-29 | 2023-05-24 | 0.123 | 356,800 | +192,000 | 0.01% | 43,886 |
| 2023-05-25 | 2023-05-23 | 0.128 | 164,800 | +96,000 | 0.00% | 21,094 |
| 2023-05-23 | 2023-05-19 | 0.130 | 68,800 | -288,000 | 0.00% | 8,944 |
| 2023-05-22 | 2023-05-18 | 0.128 | 356,800 | +192,000 | 0.01% | 45,670 |
| 2023-05-18 | 2023-05-16 | 0.129 | 164,800 | +96,000 | 0.00% | 21,259 |
| 2023-05-17 | 2023-05-15 | 0.130 | 68,800 | -96,000 | 0.00% | 8,944 |
| 2023-05-16 | 2023-05-12 | 0.129 | 164,800 | +96,000 | 0.00% | 21,259 |
| 2023-05-15 | 2023-05-11 | 0.136 | 68,800 | -192,000 | 0.00% | 9,357 |
| 2023-05-12 | 2023-05-10 | 0.140 | 260,800 | -288,000 | 0.00% | 36,512 |
| 2023-05-11 | 2023-05-09 | 0.141 | 548,800 | +480,000 | 0.01% | 77,381 |
| 2023-04-28 | 2023-04-26 | 0.140 | 68,800 | -192,000 | 0.00% | 9,632 |
| 2023-04-26 | 2023-04-24 | 0.131 | 260,800 | +192,000 | 0.00% | 34,165 |
| 2023-04-24 | 2023-04-20 | 0.145 | 68,800 | -192,000 | 0.00% | 9,976 |
| 2023-04-21 | 2023-04-19 | 0.138 | 260,800 | +192,000 | 0.00% | 35,990 |
| 2023-04-17 | 2023-04-13 | 0.137 | 68,800 | -96,000 | 0.00% | 9,426 |
| 2023-04-14 | 2023-04-12 | 0.137 | 164,800 | +96,000 | 0.00% | 22,578 |
| 2023-04-11 | 2023-04-04 | 0.133 | 68,800 | -96,000 | 0.00% | 9,150 |
| 2023-04-06 | 2023-04-03 | 0.128 | 164,800 | +96,000 | 0.00% | 21,094 |
| 2023-04-04 | 2023-03-31 | 0.137 | 68,800 | -96,000 | 0.00% | 9,426 |
| 2023-04-03 | 2023-03-30 | 0.150 | 164,800 | +96,000 | 0.00% | 24,720 |
| 2023-03-30 | 2023-03-28 | 0.143 | 68,800 | -288,000 | 0.00% | 9,838 |
| 2023-03-29 | 2023-03-27 | 0.130 | 356,800 | +192,000 | 0.01% | 46,384 |
| 2023-03-28 | 2023-03-24 | 0.135 | 164,800 | +96,000 | 0.00% | 22,248 |
| 2023-03-27 | 2023-03-23 | 0.136 | 68,800 | -96,000 | 0.00% | 9,357 |
| 2023-03-24 | 2023-03-22 | 0.135 | 164,800 | -96,000 | 0.00% | 22,248 |
| 2023-03-23 | 2023-03-21 | 0.137 | 260,800 | +192,000 | 0.00% | 35,730 |
| 2023-03-22 | 2023-03-20 | 0.154 | 68,800 | -96,000 | 0.00% | 10,595 |
| 2023-03-21 | 2023-03-17 | 0.146 | 164,800 | +96,000 | 0.00% | 24,061 |
| 2023-03-20 | 2023-03-16 | 0.146 | 68,800 | -480,000 | 0.00% | 10,045 |
| 2023-03-17 | 2023-03-15 | 0.147 | 548,800 | +480,000 | 0.01% | 80,674 |
| 2023-03-15 | 2023-03-13 | 0.166 | 68,800 | -96,000 | 0.00% | 11,421 |
| 2023-03-14 | 2023-03-10 | 0.144 | 164,800 | +96,000 | 0.00% | 23,731 |
| 2023-03-06 | 2023-03-02 | 0.165 | 68,800 | -96,000 | 0.00% | 11,352 |
| 2023-03-03 | 2023-03-01 | 0.151 | 164,800 | +96,000 | 0.00% | 24,885 |
| 2023-03-02 | 2023-02-28 | 0.166 | 68,800 | -96,000 | 0.00% | 11,421 |
| 2023-03-01 | 2023-02-27 | 0.158 | 164,800 | +96,000 | 0.00% | 26,038 |
| 2023-02-22 | 2023-02-20 | 0.144 | 68,800 | -96,000 | 0.00% | 9,907 |
| 2023-02-21 | 2023-02-17 | 0.121 | 164,800 | +96,000 | 0.00% | 19,941 |
| 2023-02-16 | 2023-02-14 | 0.169 | 68,800 | -96,000 | 0.00% | 11,627 |
| 2023-02-15 | 2023-02-13 | 0.169 | 164,800 | +96,000 | 0.00% | 27,851 |
| 2023-02-14 | 2023-02-10 | 0.168 | 68,800 | -96,000 | 0.00% | 11,558 |
| 2023-02-09 | 2023-02-07 | 0.178 | 164,800 | +96,000 | 0.00% | 29,334 |
| 2023-02-07 | 2023-02-03 | 0.175 | 68,800 | -96,000 | 0.00% | 12,040 |
| 2023-02-02 | 2023-01-31 | 0.166 | 164,800 | +96,000 | 0.00% | 27,357 |
| 2023-01-26 | 2023-01-19 | 0.162 | 68,800 | -96,000 | 0.00% | 11,146 |
| 2023-01-20 | 2023-01-18 | 0.163 | 164,800 | +96,000 | 0.00% | 26,862 |
| 2023-01-17 | 2023-01-13 | 0.168 | 68,800 | -96,000 | 0.00% | 11,558 |
| 2023-01-13 | 2023-01-11 | 0.159 | 164,800 | +96,000 | 0.00% | 26,203 |
| 2023-01-05 | 2023-01-03 | 0.166 | 68,800 | -96,000 | 0.00% | 11,421 |
| 2023-01-04 | 2022-12-30 | 0.164 | 164,800 | +96,000 | 0.00% | 27,027 |
| 2022-11-28 | 2022-11-24 | 0.250 | 68,800 | -96,000 | 0.00% | 17,200 |
| 2022-11-25 | 2022-11-23 | 0.260 | 164,800 | +96,000 | 0.00% | 42,848 |
| 2022-08-15 | 2022-08-11 | 0.255 | 68,800 | -96,000 | 0.00% | 17,544 |
| 2022-08-12 | 2022-08-10 | 0.255 | 164,800 | +96,000 | 0.00% | 42,024 |
| 2022-07-14 | 2022-07-12 | 0.295 | 68,800 | -12,000 | 0.00% | 20,296 |
| 2022-04-11 | 2022-04-07 | 0.039 | 80,800 | +4,784 | 0.01% | 3,178 |
| 2019-03-06 | 2019-03-04 | 0.141 | 76,016 | -9,869 | 0.01% | 10,727 |
| 2018-02-27 | 2018-02-23 | 0.226 | 85,885 | -1,701 | 0.01% | 19,392 |
| 2017-07-05 | 2017-07-03 | 0.381 | 87,586 | -2,551 | 0.01% | 33,372 |
| 2017-06-23 | 2017-06-21 | 0.296 | 90,137 | -4,252 | 0.01% | 26,712 |
| 2017-05-12 | 2017-05-10 | 0.353 | 94,389 | -4,252 | 0.01% | 33,300 |
| 2017-05-08 | 2017-05-04 | 0.771 | 98,641 | +5,669 | 0.01% | 76,096 |
| 2017-03-10 | 2017-03-08 | 0.771 | 92,972 | -29,478 | 0.01% | 71,723 |
| 2010-10-12 | 2010-10-08 | 0.836 | 122,450 | -32,480 | 0.01% | 102,336 |
| 2010-09-09 | 2010-09-07 | 0.739 | 154,930 | +32,480 | 0.01% | 114,540 |
| 2010-08-26 | 2010-08-24 | 0.729 | 122,450 | +5,600 | 0.01% | 89,216 |
| 2010-06-21 | 2010-06-17 | 0.932 | 116,850 | +5,599 | 0.01% | 108,924 |
| 2010-06-15 | 2010-06-11 | 0.900 | 111,251 | +5,600 | 0.01% | 100,128 |
| 2010-04-22 | 2010-04-20 | 1.189 | 105,651 | -11,199 | 0.01% | 125,652 |
| 2010-04-21 | 2010-04-19 | 1.254 | 116,850 | +11,199 | 0.01% | 146,483 |
| 2010-04-20 | 2010-04-16 | 1.200 | 105,651 | -111,997 | 0.01% | 126,784 |
| 2010-04-19 | 2010-04-15 | 1.296 | 217,648 | +55,999 | 0.02% | 282,172 |
| 2010-04-15 | 2010-04-13 | 1.339 | 161,649 | +53,758 | 0.02% | 216,499 |
| 2010-04-14 | 2010-04-12 | 1.382 | 107,891 | -5,600 | 0.01% | 149,124 |
| 2009-12-18 | 2009-12-16 | 1.436 | 113,491 | +5,600 | 0.02% | 162,945 |
| 2009-09-10 | 2009-09-08 | 1.736 | 107,891 | -5,600 | 0.04% | 187,273 |
| 2009-09-01 | 2009-08-28 | 1.521 | 113,491 | -11,199 | 0.04% | 172,673 |
| 2009-08-24 | 2009-08-20 | 1.446 | 124,690 | +11,199 | 0.05% | 180,360 |
| 2009-08-21 | 2009-08-19 | 1.468 | 113,491 | -11,199 | 0.04% | 166,593 |
| 2009-07-31 | 2009-07-29 | 1.661 | 124,690 | +11,199 | 0.05% | 207,080 |
| 2009-07-21 | 2009-07-17 | 1.789 | 113,491 | -4,479 | 0.04% | 203,073 |
| 2009-07-20 | 2009-07-16 | 1.800 | 117,970 | -6,720 | 0.05% | 212,351 |
| 2009-07-14 | 2009-07-10 | 1.532 | 124,690 | -11,200 | 0.05% | 191,048 |
| 2009-07-13 | 2009-07-09 | 1.318 | 135,890 | +1,120 | 0.05% | 179,088 |
| 2009-07-09 | 2009-07-07 | 1.339 | 134,770 | +3,360 | 0.05% | 180,500 |
| 2009-06-24 | 2009-06-22 | 1.554 | 131,410 | +11,200 | 0.05% | 204,160 |
| 2009-06-11 | 2009-06-09 | 1.693 | 120,210 | -9,707 | 0.05% | 203,503 |
| 2009-06-09 | 2009-06-05 | 1.725 | 129,917 | -27,999 | 0.05% | 224,112 |
| 2009-06-04 | 2009-06-02 | 1.607 | 157,916 | +22,399 | 0.06% | 253,800 |
| 2009-06-03 | 2009-06-01 | 1.768 | 135,517 | +28,000 | 0.05% | 239,581 |
| 2009-06-02 | 2009-05-29 | 1.650 | 107,517 | +2,240 | 0.04% | 177,407 |
| 2009-06-01 | 2009-05-27 | 1.875 | 105,277 | +3,359 | 0.04% | 197,399 |
| 2009-05-29 | 2009-05-26 | 2.132 | 101,918 | -11,199 | 0.04% | 217,309 |
| 2009-05-27 | 2009-05-25 | 1.961 | 113,117 | +16,799 | 0.04% | 221,796 |
| 2009-05-20 | 2009-05-18 | 1.350 | 96,318 | +96,318 | 0.04% | 130,032 |
| 2009-05-19 | 2009-05-15 | 1.382 | 0 | -385,271 | ||
| 2009-05-06 | 2009-05-04 | 1.714 | 385,271 | +288,953 | 0.20% | 660,481 |
| 2009-04-07 | 2009-04-03 | 2.100 | 96,318 | +4,480 | 0.05% | 202,273 |
| 2009-03-18 | 2009-03-16 | 1.629 | 91,838 | -10,080 | 0.05% | 149,568 |
| 2009-03-17 | 2009-03-13 | 1.371 | 101,918 | +10,080 | 0.05% | 139,777 |
| 2009-03-12 | 2009-03-10 | 1.200 | 91,838 | -3,733 | 0.05% | 110,208 |
| 2009-02-18 | 2009-02-16 | 1.243 | 95,571 | -5,973 | 0.05% | 118,784 |
| 2009-02-16 | 2009-02-12 | 1.200 | 101,544 | +5,973 | 0.05% | 121,856 |
| 2008-12-23 | 2008-12-19 | 1.243 | 95,571 | +2,987 | 0.05% | 118,784 |
| 2008-12-17 | 2008-12-15 | 1.414 | 92,584 | -4,854 | 0.05% | 130,943 |
| 2008-11-26 | 2008-11-24 | 1.157 | 97,438 | -2,240 | 0.06% | 112,752 |
| 2008-11-25 | 2008-11-21 | 1.243 | 99,678 | +9,334 | 0.06% | 123,889 |
| 2008-11-24 | 2008-11-20 | 1.414 | 90,344 | +2,239 | 0.05% | 127,775 |
| 2008-11-19 | 2008-11-17 | 1.671 | 88,105 | +5,600 | 0.05% | 147,265 |
| 2008-11-18 | 2008-11-14 | 1.757 | 82,505 | +1,494 | 0.05% | 144,977 |
| 2008-11-14 | 2008-11-12 | 1.843 | 81,011 | -51,519 | 0.05% | 149,295 |
| 2008-11-03 | 2008-10-30 | 1.157 | 132,530 | -4,480 | 0.08% | 153,360 |
| 2008-10-29 | 2008-10-27 | 0.814 | 137,010 | +4,480 | 0.08% | 111,568 |
| 2008-10-28 | 2008-10-24 | 0.986 | 132,530 | -2,240 | 0.08% | 130,640 |
| 2008-10-27 | 2008-10-23 | 1.329 | 134,770 | -2,240 | 0.08% | 179,056 |
| 2008-10-21 | 2008-10-17 | 0.943 | 137,010 | +4,480 | 0.08% | 129,184 |
| 2008-09-30 | 2008-09-26 | 2.057 | 132,530 | -4,107 | 0.08% | 272,640 |
| 2008-09-29 | 2008-09-25 | 2.143 | 136,637 | -5,973 | 0.08% | 292,801 |
| 2008-09-24 | 2008-09-22 | 1.757 | 142,610 | +3,733 | 0.09% | 250,592 |
| 2008-09-09 | 2008-09-05 | 2.486 | 138,877 | +4,107 | 0.09% | 345,217 |
| 2008-09-08 | 2008-09-04 | 2.914 | 134,770 | -2,240 | 0.08% | 392,768 |
| 2008-09-04 | 2008-09-02 | 3.000 | 137,010 | +2,240 | 0.08% | 411,040 |
| 2008-09-03 | 2008-09-01 | 3.343 | 134,770 | +747 | 0.08% | 450,528 |
| 2008-09-02 | 2008-08-29 | 3.386 | 134,023 | -23,893 | 0.08% | 453,775 |
| 2008-09-01 | 2008-08-28 | 2.957 | 157,916 | +3,733 | 0.10% | 466,992 |
| 2008-08-20 | 2008-08-18 | 2.100 | 154,183 | +3,733 | 0.11% | 323,792 |
| 2008-08-15 | 2008-08-13 | 3.000 | 150,450 | -3,733 | 0.11% | 451,361 |
| 2008-08-14 | 2008-08-12 | 3.086 | 154,183 | +2,613 | 0.11% | 475,776 |
| 2008-08-11 | 2008-08-07 | 3.943 | 151,570 | +11,573 | 0.11% | 597,633 |
| 2008-07-15 | 2008-07-11 | 6.643 | 139,997 | +4,480 | 0.11% | 930,003 |
| 2008-06-26 | 2008-06-24 | 7.072 | 135,517 | +3,734 | 0.11% | 958,322 |
| 2008-06-25 | 2008-06-23 | 8.357 | 131,783 | +2,986 | 0.11% | 1,101,356 |
| 2008-06-18 | 2008-06-16 | 13.500 | 128,797 | +2,240 | 0.11% | 1,738,802 |
| 2008-04-16 | 2008-04-14 | 15.000 | 126,557 | -11,946 | 0.14% | 1,898,401 |
| 2008-04-15 | 2008-04-11 | 16.286 | 138,503 | +11,946 | 0.15% | 2,255,675 |
| 2008-01-07 | 2008-01-03 | 30.001 | 126,557 | +1,867 | 0.15% | 3,796,803 |
| 2008-01-04 | 2008-01-02 | 33.001 | 124,690 | +9,333 | 0.15% | 4,114,870 |
| 2008-01-03 | 2007-12-31 | 34.287 | 115,357 | +115,357 | 0.14% | 3,955,194 |
| 2007-06-26 | 2007-06-22 | 3.501 | 0 |
Sign up for our free newsletter
Copyright & disclaimer, Privacy policy