Weekly Report: what happened at PSI last week (1201-1205)?

Last week PSI had an overall gain of 7.01%, the stock price moved from 75.59 to 80.89, last week's high was 81.61, the low was 75.30, and the cumulative volume was 355.34K.

● PSI reached a 52-week high last week on 5 December, quoting 80.89.