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

Last week CALC had an overall gain of 49.41%, the stock price moved from 4.25 to 6.35, last week's high was 6.40, the low was 4.24, and the cumulative volume was 605.47K.

● CALC reached a 52-week high last week on 19 December, quoting 6.35.