West Pharmaceutical Servs (NYSE:WST) has outperformed the market over the past 15 years by 10.08% on an annualized basis producing an average annual return of 21.95%. Currently, West Pharmaceutical Servs has a market capitalization of $24.90 billion. Buying $1000 In WST: If an investor had bought $1000 of WST stock 15 years ago, it would be worth $20,063.83 today based on a price of $336.47 for WST at the time of writing. West Pharmaceutical Servs’s Performance Over Last 15 YearsFinally — what’s the point of all this? The key insight to take from this article is to note how much of a differen…