WST · Expected Move
West Pharmaceutical Services, Inc.
The expected move for WST is derived from at-the-money straddle pricing — the market's implied one-standard-deviation move through the next 30 days. Comparing it to realized moves reveals when options are pricing in too much (premium-selling regime) vs too little (premium-buying regime).
WST straddle price & implied vol
60 sessionsBars: at-the-money straddle price (30-day and 7-day) — the market's priced move. Line: 30-day at-the-money implied volatility (right axis).
Current WST Expected Move
30-Day Straddle
$42.20
7-Day Straddle
$42.20
30-Day ATM IV
46.6%
IV Rank
90%
Implied one-standard-deviation move through the next 30 days. Compare to WST's realized
move over the same window to gauge whether options are pricing in too much (premium-selling regime)
or too little (premium-buying regime). The
Expected Move Tracker ranks every symbol by
this measure.
WST Straddle Price — Last 60 Days
| Date | 30D Straddle | 7D Straddle | ATM IV | IV Rank |
|---|---|---|---|---|
| 20261021 | $42.20 | $42.20 | 46.6% | 90% |
| 20261020 | $41.85 | $41.85 | 46.2% | 88% |
| 20261019 | $41.75 | $41.75 | 45.5% | 85% |
| 20261016 | $43.25 | $5.62 | 46.2% | 88% |
| 20261015 | $43.35 | $5.08 | 44.7% | 82% |
| 20261014 | $41.90 | $8.50 | 43.6% | 79% |
| 20261013 | $42.25 | $7.57 | 44.0% | 80% |
| 20261012 | $41.65 | $7.97 | 43.1% | 77% |
| 20261009 | $41.20 | $9.75 | 40.1% | 65% |
| 20261008 | $42.35 | $11.30 | 40.6% | 67% |
| 20261007 | $41.85 | $10.40 | 39.1% | 62% |
| 20261006 | $42.25 | $11.03 | 38.3% | 59% |
| 20261005 | $43.35 | $12.05 | 37.9% | 57% |
| 20261002 | $14.25 | $14.25 | 36.2% | 51% |
| 20261001 | $14.10 | $14.10 | 35.6% | 49% |
| 20260930 | $14.60 | $14.60 | 35.7% | 49% |
| 20260929 | $14.75 | $14.75 | 34.5% | 45% |
| 20260928 | $15.65 | $15.65 | 34.0% | 43% |
| 20260925 | $16.55 | $16.55 | 31.9% | 35% |
| 20260924 | $18.45 | $18.45 | 31.6% | 34% |
| 20260923 | $18.25 | $18.25 | 30.7% | 31% |
| 20260922 | $18.00 | $18.00 | 29.6% | 27% |
| 20260921 | $18.75 | $18.75 | 29.6% | 26% |
| 20260918 | $18.30 | $3.27 | 22.4% | 0% |
| 20260917 | $22.15 | $5.30 | 26.4% | 11% |
| 20260916 | $22.45 | $8.88 | 26.8% | 12% |
| 20260915 | $24.70 | $9.38 | 28.3% | 18% |
| 20260914 | $23.90 | $9.05 | 28.0% | 17% |
| 20260911 | $24.80 | $12.90 | 28.6% | 19% |
| 20260910 | $23.70 | $11.65 | 26.2% | 10% |
| 20260909 | $23.80 | $11.80 | 27.7% | 16% |
| 20260908 | $23.50 | $12.00 | 26.8% | 12% |
| 20260904 | $24.20 | $12.30 | 25.8% | 8% |
| 20260903 | $24.80 | $13.45 | 25.5% | 7% |
| 20260902 | $14.15 | $14.15 | 25.7% | 8% |
| 20260901 | $15.05 | $15.05 | 26.4% | 10% |
| 20260831 | $16.05 | $16.05 | 26.4% | 9% |
| 20260828 | $15.85 | $15.85 | 25.3% | 6% |
| 20260827 | $17.40 | $17.40 | 25.8% | 7% |
| 20260826 | $20.40 | $20.40 | 27.1% | 12% |
| 20260825 | $18.15 | $18.15 | 25.9% | 7% |
| 20260824 | $19.00 | $19.00 | 25.5% | 6% |
| 20260821 | $18.55 | $4.00 | 23.6% | 0% |
| 20260820 | $22.35 | $6.22 | 27.1% | 3% |
| 20260819 | $21.65 | $5.78 | 26.4% | 1% |
| 20260818 | $21.40 | $8.60 | 26.3% | 1% |
| 20260817 | $21.55 | $8.70 | 26.3% | 1% |
| 20260814 | $23.40 | $10.32 | 27.1% | 3% |
| 20260813 | $23.15 | $10.55 | 26.2% | 0% |
| 20260812 | $23.55 | $12.00 | 26.1% | 0% |
| 20260811 | $24.30 | $13.20 | 26.8% | 0% |
| 20260810 | $25.75 | $13.65 | 27.2% | 1% |
| 20260807 | — | — | 26.8% | 0% |
| 20260806 | $28.80 | $16.95 | 30.0% | 6% |
| 20260805 | $16.15 | $16.15 | 28.1% | 0% |
| 20260804 | $17.45 | $17.45 | 29.5% | 0% |
| 20260803 | $19.25 | $19.25 | 30.1% | 2% |
| 20260731 | $19.70 | $19.70 | 29.8% | 1% |
| 20260730 | $19.55 | $19.55 | 29.5% | 0% |
| 20260729 | $20.95 | $20.95 | 30.5% | 3% |
More on WST
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.