Weekly Report: what happened at SIL last week (1208-1212)?

Last week SIL had an overall gain of 7.86%, the stock price moved from 76.47 to 82.48, last week's high was 85.62, the low was 74.65, and the cumulative volume was 11.90M.

● SIL reached a 52-week high last week on 12 December, quoting 82.48.