Market capitalization of SPOK decreased by 15.41% over the past 1 year. The primary factor behind the change was an decrease in P/E Change from 17.09 to 16.64.
The secondary factor is the Revenue Growth, contributed -2.88%to the performance.
Overall, the performance of SPOK in the past 1 year is driven by P/E Change. Which is more unsustainable.