WAT Butterfly Strategy
WAT (Waters Corporation), in the Healthcare sector, (Medical - Diagnostics & Research industry), listed on NYSE.
Waters Corporation, a specialty measurement company, provides analytical workflow solutions in Asia, the Americas, and Europe. It operates through two segments, Waters and TA. The company designs, manufactures, sells, and services high and ultra-performance liquid chromatography, as well as mass spectrometry (MS) technology systems and support products, including chromatography columns, other consumable products, and post-warranty service plans. It also designs, manufactures, sells, and services thermal analysis, rheometry, and calorimetry instruments; and develops and supplies software-based products that interface with its instruments, as well as other manufacturers' instruments. Its MS technology instruments are used in drug discovery and development comprising clinical trial testing, the analysis of proteins in disease processes, nutritional safety analysis, and environmental testing. The company offers thermal analysis, rheometry, and calorimetry instruments for use in predicting the suitability and stability of fine chemicals, pharmaceuticals, water, polymers, metals, and viscous liquids for various industrial, consumer good, and healthcare products, as well as for life science research.
WAT (Waters Corporation) trades in the Healthcare sector, specifically Medical - Diagnostics & Research, with a market capitalization of approximately $21.83B, a trailing P/E of 61.24, a beta of 1.14 versus the broader market, a 52-week range of 275.05-414.15, average daily share volume of 1.1M, a public-listing history dating back to 1995, approximately 8K full-time employees. These structural characteristics shape how WAT stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 1.14 places WAT roughly in line with broader market moves, so the strategy payoff and realized volatility track the index-equivalent baseline. The trailing P/E of 61.24 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.
What is a butterfly on WAT?
A long call butterfly buys one lower-strike call, sells two ATM calls, and buys one higher-strike call, paying a small net debit for a defined-risk position that maxes out if the underlying pins the middle strike at expiration.
Current WAT snapshot
As of May 15, 2026, spot at $331.27, ATM IV 34.70%, IV rank 28.56%, expected move 9.95%. The butterfly on WAT 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 34-day expiry.
Why this butterfly structure on WAT specifically: WAT IV at 34.70% is on the cheap side of its 1-year range, which favors premium-buying structures like a WAT butterfly, with a market-implied 1-standard-deviation move of approximately 9.95% (roughly $32.96 on the underlying). The 34-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated WAT expiries trade a higher absolute premium for lower per-day decay. Position sizing on WAT should anchor to the underlying notional of $331.27 per share and to the trader's directional view on WAT stock.
WAT butterfly setup
The WAT butterfly below is built from the end-of-day chain, with each option leg priced at the bid/ask midpoint of its listed strike. With WAT near $331.27, the first option leg uses a $310.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed WAT chain at a 34-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 WAT shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $310.00 | $28.75 |
| Sell 2 | Call | $330.00 | $15.05 |
| Buy 1 | Call | $350.00 | $7.15 |
WAT butterfly risk and reward
- Net Premium / Debit
- -$580.00
- Max Profit (per contract)
- $1,381.04
- Max Loss (per contract)
- -$580.00
- Breakeven(s)
- $315.80, $344.20
- Risk / Reward Ratio
- 2.381
Max profit equals the wing width minus net debit times 100 (reached when the underlying pins the middle strike); max loss equals the net debit times 100. Two breakevens at lower-wing plus debit and upper-wing minus debit.
WAT butterfly payoff curve
Modeled P&L at expiration across a range of underlying prices for the butterfly on WAT. 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% | -$580.00 |
| $73.25 | -77.9% | -$580.00 |
| $146.50 | -55.8% | -$580.00 |
| $219.74 | -33.7% | -$580.00 |
| $292.99 | -11.6% | -$580.00 |
| $366.23 | +10.6% | -$580.00 |
| $439.48 | +32.7% | -$580.00 |
| $512.72 | +54.8% | -$580.00 |
| $585.97 | +76.9% | -$580.00 |
| $659.21 | +99.0% | -$580.00 |
When traders use butterfly on WAT
Butterflies on WAT are pinning bets - traders use them when they expect WAT to settle near a specific level at expiration (often the prior close, a round number, or the max-pain strike) and want defined-risk exposure to that outcome.
WAT thesis for this butterfly
The market-implied 1-standard-deviation range for WAT extends from approximately $298.31 on the downside to $364.23 on the upside. A WAT long call butterfly is a pinning play: it pays maximum at the middle strike if WAT settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current WAT IV rank near 28.56% 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 WAT at 34.70%. As a Healthcare name, WAT options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to WAT-specific events.
WAT butterfly positions are structurally neutral / pin (limited-risk, limited-reward); 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. WAT positions also carry Healthcare sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move WAT alongside the broader basket even when WAT-specific fundamentals are unchanged. Always rebuild the position from current WAT chain quotes before placing a trade.
Frequently asked questions
- What is a butterfly on WAT?
- A butterfly on WAT is the butterfly strategy applied to WAT (stock). The strategy is structurally neutral / pin (limited-risk, limited-reward): A long call butterfly buys one lower-strike call, sells two ATM calls, and buys one higher-strike call, paying a small net debit for a defined-risk position that maxes out if the underlying pins the middle strike at expiration. With WAT stock trading near $331.27, the strikes shown on this page are snapped to the nearest listed WAT chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are WAT butterfly max profit and max loss calculated?
- Max profit equals the wing width minus net debit times 100 (reached when the underlying pins the middle strike); max loss equals the net debit times 100. Two breakevens at lower-wing plus debit and upper-wing minus debit. For the WAT butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 34.70%), the computed maximum profit is $1,381.04 per contract and the computed maximum loss is -$580.00 per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a WAT butterfly?
- The breakeven for the WAT butterfly priced on this page is roughly $315.80 and $344.20 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 WAT market-implied 1-standard-deviation expected move is approximately 9.95%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a butterfly on WAT?
- Butterflies on WAT are pinning bets - traders use them when they expect WAT to settle near a specific level at expiration (often the prior close, a round number, or the max-pain strike) and want defined-risk exposure to that outcome.
- How does current WAT implied volatility affect this butterfly?
- WAT ATM IV is at 34.70% with IV rank near 28.56%, 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.