WST Straddle Strategy
WST (West Pharmaceutical Services, Inc.), in the Healthcare sector, (Medical - Instruments & Supplies industry), listed on NYSE.
West Pharmaceutical Services, Inc. (WST) specializes in the development, manufacturing, and global distribution of essential containment and delivery solutions for injectable pharmaceuticals and other healthcare products. The company's operations span across the Americas, Europe, the Middle East, Africa, and the Asia Pacific region, structured into two primary business units: Proprietary Products and Contract-Manufactured Products. The Proprietary Products segment offers a comprehensive array of components for injectable packaging, including stoppers and seals, alongside syringe and cartridge parts, which can be customized for specific injectable drug delivery requirements. It also provides advanced drug administration systems designed to enhance safe and effective delivery through sophisticated reconstitution, mixing, and transfer technologies. This segment further supplies ancillary services such as specialized films, protective coatings, cleaning, precision vision inspection, and sterilization processes to elevate the quality of packaging components. Innovative drug containment options, like Crystal Zenith – a cyclic olefin polymer used in vials, syringes, and cartridges – and user-friendly self-injection devices are also key offerings.
WST (West Pharmaceutical Services, Inc.) trades in the Healthcare sector, specifically Medical - Instruments & Supplies, with a market capitalization of approximately $24.79B, a trailing P/E of 46.55, a beta of 1.18 versus the broader market, a 52-week range of 206.8-352.31, average daily share volume of 857K, a public-listing history dating back to 1980, approximately 11K full-time employees. These structural characteristics shape how WST stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 1.18 places WST roughly in line with broader market moves, so the strategy payoff and realized volatility track the index-equivalent baseline. The trailing P/E of 46.55 is on the rich side, which tends to correlate with higher earnings-window IV expansion as the market debates whether forward growth supports the multiple. WST pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.
What is a straddle on WST?
A long straddle buys an ATM call and an ATM put at the same strike, profiting from a large move in either direction; max loss equals the combined debit when the underlying pins to the strike at expiration.
Current WST snapshot
As of June 30, 2026, spot at $357.97, ATM IV 31.90%, IV rank 13.34%, expected move 9.15%. The straddle on WST below is built from the same end-of-day chain, with strikes snapped to listed contracts and premiums pulled from the bid/ask midpoint at a 17-day expiry.
Why this straddle structure on WST specifically: WST IV at 31.90% is on the cheap side of its 1-year range, which favors premium-buying structures like a WST straddle, with a market-implied 1-standard-deviation move of approximately 9.15% (roughly $32.74 on the underlying). The 17-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated WST expiries trade a higher absolute premium for lower per-day decay. Position sizing on WST should anchor to the underlying notional of $357.97 per share and to the trader's directional view on WST stock.
WST straddle setup
The WST straddle below is built from the end-of-day chain, with each option leg priced at the bid/ask midpoint of its listed strike. With WST near $357.97, the first option leg uses a $360.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed WST chain at a 17-day expiry; the cross-strike IV skew is reflected directly in the per-leg values rather than approximated. Quantity sizing assumes one contract per option leg (or 100 WST shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $360.00 | $9.20 |
| Buy 1 | Put | $360.00 | $10.55 |
WST straddle risk and reward
- Net Premium / Debit
- -$1,975.00
- Max Profit (per contract)
- Unbounded
- Max Loss (per contract)
- -$1,952.38
- Breakeven(s)
- $340.25, $379.75
- Risk / Reward Ratio
- Unbounded
Upside max profit is unbounded; downside max profit is bounded at the strike minus the combined call plus put debit (reached at zero). Max loss equals the combined debit times 100 (reached when the underlying pins to the strike). Two breakevens at strike plus debit and strike minus debit.
WST straddle payoff curve
Modeled P&L at expiration across a range of underlying prices for the straddle on WST. Each row is one sampled price point from the computed payoff curve; the full curve uses 200 price points internally before being summarized into 10 rows here.
| Underlying Price | % From Spot | P&L at Expiration |
|---|---|---|
| $0.01 | -100.0% | +$34,024.00 |
| $79.16 | -77.9% | +$26,109.20 |
| $158.31 | -55.8% | +$18,194.39 |
| $237.45 | -33.7% | +$10,279.59 |
| $316.60 | -11.6% | +$2,364.78 |
| $395.75 | +10.6% | +$1,600.02 |
| $474.90 | +32.7% | +$9,514.82 |
| $554.05 | +54.8% | +$17,429.63 |
| $633.19 | +76.9% | +$25,344.43 |
| $712.34 | +99.0% | +$33,259.24 |
When traders use straddle on WST
Straddles on WST are pure-volatility plays that profit from large moves in either direction; traders typically buy WST straddles ahead of earnings, FDA decisions, or other catalysts where the realized move is expected to exceed the implied move priced into the chain.
WST thesis for this straddle
The market-implied 1-standard-deviation range for WST extends from approximately $325.23 on the downside to $390.71 on the upside. A WST long straddle is a pure-volatility play: it profits when the underlying moves far enough from the strike in either direction to overcome the combined call plus put debit, regardless of direction. Current WST IV rank near 13.34% sits in the lower third of its 1-year distribution, where IV often re-expands toward the mean; this favors premium-buying structures and disadvantages premium-selling structures on WST at 31.90%. As a Healthcare name, WST options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to WST-specific events.
WST straddle positions are structurally neutral / high-volatility (long premium); the modeled P&L assumes European-style exercise at expiration and ignores early assignment, transaction costs, dividends paid before expiry on the stock leg (when present), and the bid-ask spread on the listed chain. WST positions also carry Healthcare sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move WST alongside the broader basket even when WST-specific fundamentals are unchanged. Always rebuild the position from current WST chain quotes before placing a trade.
Frequently asked questions
- What is a straddle on WST?
- A straddle on WST is the straddle strategy applied to WST (stock). The strategy is structurally neutral / high-volatility (long premium): A long straddle buys an ATM call and an ATM put at the same strike, profiting from a large move in either direction; max loss equals the combined debit when the underlying pins to the strike at expiration. With WST stock trading near $357.97, the strikes shown on this page are snapped to the nearest listed WST chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are WST straddle max profit and max loss calculated?
- Upside max profit is unbounded; downside max profit is bounded at the strike minus the combined call plus put debit (reached at zero). Max loss equals the combined debit times 100 (reached when the underlying pins to the strike). Two breakevens at strike plus debit and strike minus debit. For the WST straddle priced from the end-of-day chain at a 30-day expiry (ATM IV 31.90%), the computed maximum profit is unbounded per contract and the computed maximum loss is -$1,952.38 per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a WST straddle?
- The breakeven for the WST straddle priced on this page is roughly $340.25 and $379.75 at expiration, derived from end-of-day chain premiums. Breakeven is the underlying price at which the strategy's P&L crosses zero ignoring transaction costs and assignment risk. The current WST market-implied 1-standard-deviation expected move is approximately 9.15%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a straddle on WST?
- Straddles on WST are pure-volatility plays that profit from large moves in either direction; traders typically buy WST straddles ahead of earnings, FDA decisions, or other catalysts where the realized move is expected to exceed the implied move priced into the chain.
- How does current WST implied volatility affect this straddle?
- WST ATM IV is at 31.90% with IV rank near 13.34%, which is on the low end of its 1-year range. Premium-buying structures (long call, long put, debit spreads) are relatively cheap in this regime; premium-selling structures collect less credit per unit risk.