How are WRB 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 WRB butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 19.50%), the computed maximum profit is $149.64 per contract and the computed maximum loss is -$227.50 per contract. Live intraday quotes will differ as the chain moves through the trading session.

What is the breakeven for a WRB butterfly?

The breakeven for the WRB butterfly priced on this page is roughly $64.78 and $68.23 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 WRB market-implied 1-standard-deviation expected move is approximately 5.59%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.

How does current WRB implied volatility affect this butterfly?

WRB ATM IV is at 19.50% with IV rank near 2.42%, 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.

WRB Butterfly Strategy

WRB (W. R. Berkley Corporation), in the Financial Services sector, (Insurance - Property & Casualty industry), listed on NYSE.

W. R. Berkley Corporation, an insurance holding company, operates as a commercial lines writer in the United States and internationally. It operates in two segments, Insurance and Reinsurance & Monoline Excess. The Insurance segment underwrites commercial insurance business, including premises operations, commercial automobile, property, products liability, and general and professional liability lines. It also provides workers' compensation insurance products; accident and health insurance and reinsurance products; insurance for commercial risks; specialty environmental products for contractors, consultants, and property owners and facilities operators; specialized insurance coverages for fine arts and jewelry exposures; umbrella and excess liability coverage products; and liquor liability and inland marine coverage for small to medium-sized insureds.

WRB (W. R. Berkley Corporation) trades in the Financial Services sector, specifically Insurance - Property & Casualty, with a market capitalization of approximately $24.36B, a trailing P/E of 13.67, a beta of 0.33 versus the broader market, a 52-week range of 63.68-78.96, average daily share volume of 2.1M, a public-listing history dating back to 1973, approximately 9K full-time employees. These structural characteristics shape how WRB stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.

A beta of 0.33 indicates WRB has historically moved less than the broader market, dampening realized volatility and producing tighter expected-move bands per unit of dollar exposure. WRB pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.

What is a butterfly on WRB?

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 WRB snapshot

As of May 15, 2026, spot at $66.39, ATM IV 19.50%, IV rank 2.42%, expected move 5.59%. The butterfly on WRB 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 63-day expiry.

Why this butterfly structure on WRB specifically: WRB IV at 19.50% is on the cheap side of its 1-year range, which favors premium-buying structures like a WRB butterfly, with a market-implied 1-standard-deviation move of approximately 5.59% (roughly $3.71 on the underlying). The 63-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated WRB expiries trade a higher absolute premium for lower per-day decay. Position sizing on WRB should anchor to the underlying notional of $66.39 per share and to the trader's directional view on WRB stock.

WRB butterfly setup

The WRB 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 WRB near $66.39, the first option leg uses a $62.50 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed WRB chain at a 63-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 WRB shares for the stock leg in covered calls and collars).

Action	Type	Strike / Basis	Premium (est)
Buy 1	Call	$62.50	$5.25
Sell 2	Call	$66.50	$2.00
Buy 1	Call	$70.00	$1.03

WRB butterfly risk and reward

Net Premium / Debit: -$227.50
Max Profit (per contract): $149.64
Max Loss (per contract): -$227.50
Breakeven(s): $64.78, $68.23
Risk / Reward Ratio: 0.658

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.

WRB butterfly payoff curve

Modeled P&L at expiration across a range of underlying prices for the butterfly on WRB. 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%	-$227.50
$14.69	-77.9%	-$227.50
$29.37	-55.8%	-$227.50
$44.04	-33.7%	-$227.50
$58.72	-11.5%	-$227.50
$73.40	+10.6%	-$177.50
$88.08	+32.7%	-$177.50
$102.76	+54.8%	-$177.50
$117.43	+76.9%	-$177.50
$132.11	+99.0%	-$177.50

When traders use butterfly on WRB

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

WRB thesis for this butterfly

The market-implied 1-standard-deviation range for WRB extends from approximately $62.68 on the downside to $70.10 on the upside. A WRB long call butterfly is a pinning play: it pays maximum at the middle strike if WRB settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current WRB IV rank near 2.42% 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 WRB at 19.50%. As a Financial Services name, WRB options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to WRB-specific events.

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

Frequently asked questions

What is a butterfly on WRB?: A butterfly on WRB is the butterfly strategy applied to WRB (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 WRB stock trading near $66.39, the strikes shown on this page are snapped to the nearest listed WRB chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
How are WRB 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 WRB butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 19.50%), the computed maximum profit is $149.64 per contract and the computed maximum loss is -$227.50 per contract. Live intraday quotes will differ as the chain moves through the trading session.
What is the breakeven for a WRB butterfly?: The breakeven for the WRB butterfly priced on this page is roughly $64.78 and $68.23 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 WRB market-implied 1-standard-deviation expected move is approximately 5.59%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
When should you consider a butterfly on WRB?: Butterflies on WRB are pinning bets - traders use them when they expect WRB 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 WRB implied volatility affect this butterfly?: WRB ATM IV is at 19.50% with IV rank near 2.42%, 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.