IRWD Butterfly Strategy
IRWD (Ironwood Pharmaceuticals, Inc.), in the Healthcare sector, (Drug Manufacturers - Specialty & Generic industry), listed on NASDAQ.
Ironwood Pharmaceuticals, Inc., a healthcare company, focuses on the development and commercialization of gastrointestinal (GI) products. It markets linaclotide, a guanylate cyclase type-C agonist for the treatment of adults suffering from irritable bowel syndrome with constipation (IBS-C) or chronic idiopathic constipation (CIC) under the LINZESS name in the United States and Mexico, as well as under the CONSTELLA name in the Canada and European Union. The company is also developing IW-3300, a GC-C agonist for the treatment of visceral pain conditions, including interstitial cystitis/bladder pain syndrome and endometriosis; and CNP-104, an immune nanoparticle for the treatment of biliary cholangitis. The company has strategic partnerships with AbbVie Inc., AstraZeneca AB, and Astellas Pharma Inc. for the development and commercialization of linaclotide. The company was formerly known as Microbia, Inc. and changed its name to Ironwood Pharmaceuticals, Inc. in April 2008. Ironwood Pharmaceuticals, Inc. was incorporated in 1998 and is headquartered in Boston, Massachusetts.
IRWD (Ironwood Pharmaceuticals, Inc.) trades in the Healthcare sector, specifically Drug Manufacturers - Specialty & Generic, with a market capitalization of approximately $605.8M, a trailing P/E of 5.89, a beta of 0.30 versus the broader market, a 52-week range of 0.53-5.78, average daily share volume of 2.8M, a public-listing history dating back to 2010, approximately 253 full-time employees. These structural characteristics shape how IRWD stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 0.30 indicates IRWD has historically moved less than the broader market, dampening realized volatility and producing tighter expected-move bands per unit of dollar exposure. The trailing P/E of 5.89 is on the value side, where IV often compresses outside event windows because forward growth expectations are already discounted into the share price.
What is a butterfly on IRWD?
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 IRWD snapshot
As of May 15, 2026, spot at $3.58, ATM IV 49.20%, IV rank 6.93%, expected move 14.11%. The butterfly on IRWD 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 IRWD specifically: IRWD IV at 49.20% is on the cheap side of its 1-year range, which favors premium-buying structures like a IRWD butterfly, with a market-implied 1-standard-deviation move of approximately 14.11% (roughly $0.50 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 IRWD expiries trade a higher absolute premium for lower per-day decay. Position sizing on IRWD should anchor to the underlying notional of $3.58 per share and to the trader's directional view on IRWD stock.
IRWD butterfly setup
The IRWD 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 IRWD near $3.58, the first option leg uses a $3.40 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed IRWD 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 IRWD shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $3.40 | N/A |
| Sell 2 | Call | $3.58 | N/A |
| Buy 1 | Call | $3.76 | N/A |
IRWD butterfly risk and reward
- Net Premium / Debit
- N/A
- Max Profit (per contract)
- Unbounded
- Max Loss (per contract)
- Unbounded
- Breakeven(s)
- None on modeled curve
- Risk / Reward Ratio
- N/A
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.
IRWD butterfly payoff curve
Modeled P&L at expiration across a range of underlying prices for the butterfly on IRWD. 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.
When traders use butterfly on IRWD
Butterflies on IRWD are pinning bets - traders use them when they expect IRWD 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.
IRWD thesis for this butterfly
The market-implied 1-standard-deviation range for IRWD extends from approximately $3.08 on the downside to $4.08 on the upside. A IRWD long call butterfly is a pinning play: it pays maximum at the middle strike if IRWD settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current IRWD IV rank near 6.93% 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 IRWD at 49.20%. As a Healthcare name, IRWD options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to IRWD-specific events.
IRWD 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. IRWD positions also carry Healthcare sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move IRWD alongside the broader basket even when IRWD-specific fundamentals are unchanged. Always rebuild the position from current IRWD chain quotes before placing a trade.
Frequently asked questions
- What is a butterfly on IRWD?
- A butterfly on IRWD is the butterfly strategy applied to IRWD (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 IRWD stock trading near $3.58, the strikes shown on this page are snapped to the nearest listed IRWD chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are IRWD 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 IRWD butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 49.20%), the computed maximum profit is unbounded per contract and the computed maximum loss is unbounded per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a IRWD butterfly?
- The breakeven for the IRWD butterfly priced on this page is no defined breakeven on the modeled curve 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 IRWD market-implied 1-standard-deviation expected move is approximately 14.11%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a butterfly on IRWD?
- Butterflies on IRWD are pinning bets - traders use them when they expect IRWD 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 IRWD implied volatility affect this butterfly?
- IRWD ATM IV is at 49.20% with IV rank near 6.93%, 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.