BMO Butterfly Strategy
BMO (Bank of Montreal), in the Financial Services sector, (Banks - Diversified industry), listed on NYSE.
Bank of Montreal engages in the provision of diversified financial services primarily in North America. The company operates through Canadian P&C, U.S P&C, BMO Wealth Management, and BMO Capital Markets segments. It’s personal banking products and services include deposits, home lending, consumer credit, small business lending, credit cards, cash management, financial and investment advice, and other banking services; and commercial banking products and services comprise various of financing options and treasury and payment solutions, as well as risk management products. It also offers investing, banking, and wealth management advisory; digital investing services; financial solutions for individuals, families, and businesses; offers investment management services to institutional, retail, and high net worth investors; and diversified insurance, and wealth and pension de-risking solutions. In addition, the company provides individual life, critical illness and annuity products, as well as segregated funds, and group creditor and travel insurance to customers; debt and equity capital-raising, loan origination and syndication, balance sheet management, treasury management, mergers and acquisitions advice, restructurings and recapitalizations, trade finance, and risk mitigation services, as well as a range of banking and other operating services. Further, the company offers research and access to financial markets for institutional, corporate and retail clients through an integrated suite of sales and trading solutions related to debt, foreign exchange, interest rates, credit, equities, securitization, and commodities; provides new product development and origination services, as well as risk management and advisory services for hedging strategies, including in interest rates, foreign exchange rates and commodities prices; and funding and liquidity management services.
BMO (Bank of Montreal) trades in the Financial Services sector, specifically Banks - Diversified, with a market capitalization of approximately $122.64B, a trailing P/E of 17.96, a beta of 1.16 versus the broader market, a 52-week range of 109.31-175.54, average daily share volume of 782K, a public-listing history dating back to 1994, approximately 54K full-time employees. These structural characteristics shape how BMO stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 1.16 places BMO roughly in line with broader market moves, so the strategy payoff and realized volatility track the index-equivalent baseline. BMO pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.
What is a butterfly on BMO?
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 BMO snapshot
As of June 30, 2026, spot at $176.10, ATM IV 18.00%, IV rank 42.52%, expected move 5.16%. The butterfly on BMO 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 butterfly structure on BMO specifically: BMO IV at 18.00% is mid-range versus its 1-year history, so strategy selection should anchor more to the directional thesis than to the IV regime, with a market-implied 1-standard-deviation move of approximately 5.16% (roughly $9.09 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 BMO expiries trade a higher absolute premium for lower per-day decay. Position sizing on BMO should anchor to the underlying notional of $176.10 per share and to the trader's directional view on BMO stock.
BMO butterfly setup
The BMO 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 BMO near $176.10, the first option leg uses a $165.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed BMO 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 BMO shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $165.00 | $11.50 |
| Sell 2 | Call | $175.00 | $3.45 |
| Buy 1 | Call | $185.00 | $0.43 |
BMO butterfly risk and reward
- Net Premium / Debit
- -$502.50
- Max Profit (per contract)
- $475.49
- Max Loss (per contract)
- -$502.50
- Breakeven(s)
- $170.03, $179.98
- Risk / Reward Ratio
- 0.946
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.
BMO butterfly payoff curve
Modeled P&L at expiration across a range of underlying prices for the butterfly on BMO. 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% | -$502.50 |
| $38.95 | -77.9% | -$502.50 |
| $77.88 | -55.8% | -$502.50 |
| $116.82 | -33.7% | -$502.50 |
| $155.75 | -11.6% | -$502.50 |
| $194.69 | +10.6% | -$502.50 |
| $233.62 | +32.7% | -$502.50 |
| $272.56 | +54.8% | -$502.50 |
| $311.49 | +76.9% | -$502.50 |
| $350.43 | +99.0% | -$502.50 |
When traders use butterfly on BMO
Butterflies on BMO are pinning bets - traders use them when they expect BMO 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.
BMO thesis for this butterfly
The market-implied 1-standard-deviation range for BMO extends from approximately $167.01 on the downside to $185.19 on the upside. A BMO long call butterfly is a pinning play: it pays maximum at the middle strike if BMO settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current BMO IV rank near 42.52% is mid-range against its 1-year distribution, so the IV signal is neutral; the butterfly thesis on BMO should anchor more to the directional view and the expected-move geometry. As a Financial Services name, BMO options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to BMO-specific events.
BMO 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. BMO positions also carry Financial Services sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move BMO alongside the broader basket even when BMO-specific fundamentals are unchanged. Always rebuild the position from current BMO chain quotes before placing a trade.
Frequently asked questions
- What is a butterfly on BMO?
- A butterfly on BMO is the butterfly strategy applied to BMO (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 BMO stock trading near $176.10, the strikes shown on this page are snapped to the nearest listed BMO chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are BMO 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 BMO butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 18.00%), the computed maximum profit is $475.49 per contract and the computed maximum loss is -$502.50 per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a BMO butterfly?
- The breakeven for the BMO butterfly priced on this page is roughly $170.03 and $179.98 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 BMO market-implied 1-standard-deviation expected move is approximately 5.16%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a butterfly on BMO?
- Butterflies on BMO are pinning bets - traders use them when they expect BMO 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 BMO implied volatility affect this butterfly?
- BMO ATM IV is at 18.00% with IV rank near 42.52%, which is mid-range against its 1-year history. Strategy selection depends more on directional thesis and expected move than on a strong IV signal.