What's priced into West Pharmaceutical Services, Inc.?
What do you have to believe to make money in West Pharmaceutical Services, Inc. at $337? The stock trades at 42.9x trailing earnings and the Street expects about 16% growth a year. The question is where do we go from here?
Growth down the side, exit multiple across the top, your five-year annualized return in each cell.
The expectations grid · 5-year annualized return
| EPS growth ↓ · Exit multiple → | 21.4x −50% | 32.2x −25% | 42.9x today | 53.6x +25% | 44.1x 5y median |
|---|---|---|---|---|---|
| −8% (decline) | −20% | −13% | −8% | −4% | −7% |
| 0% (no growth) | −13% | −6% | +0% | +5% | +1% |
| 8% (half) | −6% | +2% | +8% | +13% | +8% |
| 16% (Street consensus) | +1% | +9% | +16% | +21% | +16% |
| 19% (beat) | +4% | +13% | +19% | +25% | +20% |
| 23% (big beat) | +7% | +16% | +23% | +29% | +24% |
“West Pharmaceutical Services makes the rubber stoppers, plungers, and seals that sit between every injectable drug and the human bloodstream, a single-source qualified component for most major biologics including GLP-1 injectables, hemophilia therapeutics, and biosimilars.”
From our WST write-up.
Read the WST write-up →Method. Trailing diluted EPS of $7.87 (price $337.47 ÷ 42.9x trailing P/E; data from Financial Modeling Prep, August 29, 2026). Exit multiples are anchored to the stock itself: 50% and 25% below today's multiple, today's, 25% above, and its own five-fiscal-year median of 44.1x. Growth rows are anchored to the Street’s forward consensus: a decline at half the center rate, zero, half, the center, 25% above, and 50% above. Cell shading scales with the return, green positive, red negative. Each cell: EPS compounds at the row's rate for five years, the stock is valued at the column's multiple in year five, and the result is the annualized return against today's price. Dividends and buybacks excluded. An illustrative surface, not a forecast and not a call.