How are CWB 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 CWB butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 21.90%), the computed maximum profit is $348.73 per contract and the computed maximum loss is -$100.00 per contract. Live intraday quotes will differ as the chain moves through the trading session.

What is the breakeven for a CWB butterfly?

The breakeven for the CWB butterfly priced on this page is roughly $101.00 and $109.00 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 CWB market-implied 1-standard-deviation expected move is approximately 6.28%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.

How does current CWB implied volatility affect this butterfly?

CWB ATM IV is at 21.90% with IV rank near 32.66%, 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.

CWB Butterfly Strategy

CWB (State Street SPDR Bloomberg Convertible Securities ETF), in the Financial Services sector, (Asset Management industry), listed on AMEX.

The State Street SPDR Bloomberg Convertible Securities ETF seeks to provide investment results that, before fees and expenses, correspond generally to the price and yield performance of the Bloomberg US Convertible Liquid Bond Index (the "Index")Seeks to provide exposure to the market of U.S. convertible securities with an issue amount of at least $350 million and a par amount outstanding of at least $250 millionConvertible bonds are bonds that can be exchanged, at the option of the holder, for a specific number of shares of the issuer's preferred stock or common stockRebalanced on the last business day of the month

CWB (State Street SPDR Bloomberg Convertible Securities ETF) trades in the Financial Services sector, specifically Asset Management, with a market capitalization of approximately $4.65B, a beta of 1.02 versus the broader market, a 52-week range of 79.13-106.6, average daily share volume of 1.3M, a public-listing history dating back to 2009. These structural characteristics shape how CWB etf options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.

A beta of 1.02 places CWB roughly in line with broader market moves, so the strategy payoff and realized volatility track the index-equivalent baseline. CWB pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.

What is a butterfly on CWB?

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 CWB snapshot

As of May 15, 2026, spot at $105.01, ATM IV 21.90%, IV rank 32.66%, expected move 6.28%. The butterfly on CWB 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 CWB specifically: CWB IV at 21.90% 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 6.28% (roughly $6.59 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 CWB expiries trade a higher absolute premium for lower per-day decay. Position sizing on CWB should anchor to the underlying notional of $105.01 per share and to the trader's directional view on CWB etf.

CWB butterfly setup

The CWB 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 CWB near $105.01, the first option leg uses a $100.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed CWB 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 CWB shares for the stock leg in covered calls and collars).

Action	Type	Strike / Basis	Premium (est)
Buy 1	Call	$100.00	$6.00
Sell 2	Call	$105.00	$2.95
Buy 1	Call	$110.00	$0.90

CWB butterfly risk and reward

Net Premium / Debit: -$100.00
Max Profit (per contract): $348.73
Max Loss (per contract): -$100.00
Breakeven(s): $101.00, $109.00
Risk / Reward Ratio: 3.487

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.

CWB butterfly payoff curve

Modeled P&L at expiration across a range of underlying prices for the butterfly on CWB. 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%	-$100.00
$23.23	-77.9%	-$100.00
$46.44	-55.8%	-$100.00
$69.66	-33.7%	-$100.00
$92.88	-11.6%	-$100.00
$116.10	+10.6%	-$100.00
$139.31	+32.7%	-$100.00
$162.53	+54.8%	-$100.00
$185.75	+76.9%	-$100.00
$208.96	+99.0%	-$100.00

When traders use butterfly on CWB

Butterflies on CWB are pinning bets - traders use them when they expect CWB 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.

CWB thesis for this butterfly

The market-implied 1-standard-deviation range for CWB extends from approximately $98.42 on the downside to $111.60 on the upside. A CWB long call butterfly is a pinning play: it pays maximum at the middle strike if CWB settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current CWB IV rank near 32.66% is mid-range against its 1-year distribution, so the IV signal is neutral; the butterfly thesis on CWB should anchor more to the directional view and the expected-move geometry. As a Financial Services name, CWB options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to CWB-specific events.

CWB 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. CWB positions also carry Financial Services sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move CWB alongside the broader basket even when CWB-specific fundamentals are unchanged. Always rebuild the position from current CWB chain quotes before placing a trade.

Frequently asked questions

What is a butterfly on CWB?: A butterfly on CWB is the butterfly strategy applied to CWB (etf). 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 CWB etf trading near $105.01, the strikes shown on this page are snapped to the nearest listed CWB chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
How are CWB 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 CWB butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 21.90%), the computed maximum profit is $348.73 per contract and the computed maximum loss is -$100.00 per contract. Live intraday quotes will differ as the chain moves through the trading session.
What is the breakeven for a CWB butterfly?: The breakeven for the CWB butterfly priced on this page is roughly $101.00 and $109.00 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 CWB market-implied 1-standard-deviation expected move is approximately 6.28%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
When should you consider a butterfly on CWB?: Butterflies on CWB are pinning bets - traders use them when they expect CWB 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 CWB implied volatility affect this butterfly?: CWB ATM IV is at 21.90% with IV rank near 32.66%, 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.