Weekly Report: what happened at PST last week (0907-0911)?

Last week PST had an overall gain of 2.92%, the stock price moved from 23.80 to 24.4947, last week's high was 24.50, the low was 23.80, and the cumulative volume was 24.27K.

● PST reached a 52-week high last week on 11 September, quoting 24.4947.