How are BLD straddle max profit and max loss calculated?

Upside max profit is unbounded; downside max profit is bounded at the strike minus the combined call plus put debit (reached at zero). Max loss equals the combined debit times 100 (reached when the underlying pins to the strike). Two breakevens at strike plus debit and strike minus debit. For the BLD straddle priced from the end-of-day chain at a 30-day expiry (ATM IV 71.10%), the computed maximum profit is unbounded per contract and the computed maximum loss is -$3,503.77 per contract. Live intraday quotes will differ as the chain moves through the trading session.

What is the breakeven for a BLD straddle?

The breakeven for the BLD straddle priced on this page is roughly $303.50 and $376.50 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 BLD market-implied 1-standard-deviation expected move is approximately 20.38%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.

How does current BLD implied volatility affect this straddle?

BLD ATM IV is at 71.10% with IV rank near 12.46%, 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.

BLD Straddle Strategy

BLD (TopBuild Corp.), in the Industrials sector, (Engineering & Construction industry), listed on NYSE.

TopBuild Corp., operating under the ticker BLD, specializes in both installing and distributing insulation alongside a diverse range of other construction materials for the building sector. The company primarily functions through two distinct divisions: Installation and Specialty Distribution. Its comprehensive product and service portfolio encompasses a wide array of offerings, such as insulation and its related accessories, glass and window units, rain gutters, afterpaint products, fireproofing solutions, garage doors, fireplaces, closet shelving, and roofing supplies, among others. Additionally, TopBuild provides expert insulation fitting services. Beyond material supply and installation, the firm offers a suite of specialized services and tools. These are designed to assist builders in integrating sound building science principles into new residential construction projects, including pre-construction plan assessments, diagnostic performance testing, various inspection types, and detailed home energy rating certifications.

BLD (TopBuild Corp.) trades in the Industrials sector, specifically Engineering & Construction, with a market capitalization of approximately $11.98B, a trailing P/E of 23.66, a beta of 1.81 versus the broader market, a 52-week range of 321.67-559.468, average daily share volume of 880K, a public-listing history dating back to 2015, approximately 14K full-time employees. These structural characteristics shape how BLD stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.

A beta of 1.81 indicates BLD has historically moved more than the broader market, amplifying both the directional payoff and the realized volatility relative to an index-equivalent position.

What is a straddle on BLD?

A long straddle buys an ATM call and an ATM put at the same strike, profiting from a large move in either direction; max loss equals the combined debit when the underlying pins to the strike at expiration.

Current BLD snapshot

As of June 30, 2026, spot at $339.75, ATM IV 71.10%, IV rank 12.46%, expected move 20.38%. The straddle on BLD 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 straddle structure on BLD specifically: BLD IV at 71.10% is on the cheap side of its 1-year range, which favors premium-buying structures like a BLD straddle, with a market-implied 1-standard-deviation move of approximately 20.38% (roughly $69.25 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 BLD expiries trade a higher absolute premium for lower per-day decay. Position sizing on BLD should anchor to the underlying notional of $339.75 per share and to the trader's directional view on BLD stock.

BLD straddle setup

The BLD straddle below is built from the end-of-day chain, with each option leg priced at the bid/ask midpoint of its listed strike. With BLD near $339.75, the first option leg uses a $340.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed BLD 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 BLD shares for the stock leg in covered calls and collars).

Action	Type	Strike / Basis	Premium (est)
Buy 1	Call	$340.00	$20.00
Buy 1	Put	$340.00	$16.50

BLD straddle risk and reward

Net Premium / Debit: -$3,650.00
Max Profit (per contract): Unbounded
Max Loss (per contract): -$3,503.77
Breakeven(s): $303.50, $376.50
Risk / Reward Ratio: Unbounded

Upside max profit is unbounded; downside max profit is bounded at the strike minus the combined call plus put debit (reached at zero). Max loss equals the combined debit times 100 (reached when the underlying pins to the strike). Two breakevens at strike plus debit and strike minus debit.

BLD straddle payoff curve

Modeled P&L at expiration across a range of underlying prices for the straddle on BLD. 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.

P&L at expiration across the modeled underlying-price range. Green shading marks profitable regions, red shading marks loss regions. Dotted purple verticals mark breakevens; the solid dark vertical marks current spot.

Underlying Price	% From Spot	P&L at Expiration
$0.01	-100.0%	+$30,349.00
$75.13	-77.9%	+$22,837.05
$150.25	-55.8%	+$15,325.10
$225.37	-33.7%	+$7,813.15
$300.49	-11.6%	+$301.20
$375.61	+10.6%	-$89.25
$450.73	+32.7%	+$7,422.70
$525.85	+54.8%	+$14,934.65
$600.97	+76.9%	+$22,446.60
$676.09	+99.0%	+$29,958.55

When traders use straddle on BLD

Straddles on BLD are pure-volatility plays that profit from large moves in either direction; traders typically buy BLD straddles ahead of earnings, FDA decisions, or other catalysts where the realized move is expected to exceed the implied move priced into the chain.

BLD thesis for this straddle

The market-implied 1-standard-deviation range for BLD extends from approximately $270.50 on the downside to $409.00 on the upside. A BLD long straddle is a pure-volatility play: it profits when the underlying moves far enough from the strike in either direction to overcome the combined call plus put debit, regardless of direction. Current BLD IV rank near 12.46% 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 BLD at 71.10%. As a Industrials name, BLD options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to BLD-specific events.

BLD straddle positions are structurally neutral / high-volatility (long premium); 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. BLD positions also carry Industrials sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move BLD alongside the broader basket even when BLD-specific fundamentals are unchanged. Always rebuild the position from current BLD chain quotes before placing a trade.

Frequently asked questions

What is a straddle on BLD?: A straddle on BLD is the straddle strategy applied to BLD (stock). The strategy is structurally neutral / high-volatility (long premium): A long straddle buys an ATM call and an ATM put at the same strike, profiting from a large move in either direction; max loss equals the combined debit when the underlying pins to the strike at expiration. With BLD stock trading near $339.75, the strikes shown on this page are snapped to the nearest listed BLD chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
How are BLD straddle max profit and max loss calculated?: Upside max profit is unbounded; downside max profit is bounded at the strike minus the combined call plus put debit (reached at zero). Max loss equals the combined debit times 100 (reached when the underlying pins to the strike). Two breakevens at strike plus debit and strike minus debit. For the BLD straddle priced from the end-of-day chain at a 30-day expiry (ATM IV 71.10%), the computed maximum profit is unbounded per contract and the computed maximum loss is -$3,503.77 per contract. Live intraday quotes will differ as the chain moves through the trading session.
What is the breakeven for a BLD straddle?: The breakeven for the BLD straddle priced on this page is roughly $303.50 and $376.50 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 BLD market-implied 1-standard-deviation expected move is approximately 20.38%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
When should you consider a straddle on BLD?: Straddles on BLD are pure-volatility plays that profit from large moves in either direction; traders typically buy BLD straddles ahead of earnings, FDA decisions, or other catalysts where the realized move is expected to exceed the implied move priced into the chain.
How does current BLD implied volatility affect this straddle?: BLD ATM IV is at 71.10% with IV rank near 12.46%, 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.