Market capitalization of AMGN increased by 31.56% over the past 1 year. The primary factor behind the change was an increase in P/E Change from 22.28 to 26.30.
The secondary factor is the Revenue Growth, contributed 12.40%to the performance.
Overall, the performance of AMGN in the past 1 year is driven by P/E Change. Which is more unsustainable.