The trading activity on MTSL is very strange. Therew as basically no trading at all until this year. Many days were zero volume or a few hundred shares. Beginning in 2018, most days have been less than 100k shares a day and then every few weeks there's over a million or several million shares traded. There's only 3 million shares total, so obviously alot of manipulation of some kind going on:

https://www.nasdaq.com/symbol/mtsl/historical

It will be very interesting to see what happens tomorrow. There was a surge late in the day on Friday on heavy volume.