I watch a lot of long-term trading patterns of stocks and I found this interesting.
If you look at a semi-log chart of Gilead (GILD) going back to its debut as a public company and overlay that on top of SGEN from its debut, the patterns are eerily similar....in volatility/price movement. Some of this may be ascribed to the fact that both companies are in the biotech sector, some perhaps to the beliefs/attitudes of investors in those companies.
Anyway, after 13+ years as a public company, GILD in early 2005 (after adjusting for five splits) sold for about $7 1/2. In the next 9+ years, GILD would rise by more than 12-fold.....that's a compound annual rate of return of about 25%.
If this pattern should continue, SGEN will have a great future....though, of course, we all really know that the future will be determined by company fundamentals and how well the company executes on its strategy....still, I found the parallels with share prices "interesting."