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

Last week ISTR had an overall gain of 0.92%, the stock price moved from 27.16 to 27.41, last week's high was 27.95, the low was 27.0501, and the cumulative volume was 246.12K.

● ISTR reached a 52-week high last week on 19 December, quoting 27.41.