Weekly Report: what happened at BYD last week (1215-1219)?

Last week 81211 had an overall loss of -4.89%, the stock price moved from 89.00 to 84.65, last week's high was 89.00, the low was 84.10, and the cumulative volume was 42.80K.

● 81211 reached a 52-week down last week on 18 December, quoting 84.65.