How are VST 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 VST straddle priced from the end-of-day chain at a 30-day expiry (ATM IV 51.20%), the computed maximum profit is unbounded per contract and the computed maximum loss is -$1,850.79 per contract. Live intraday quotes will differ as the chain moves through the trading session.

What is the breakeven for a VST straddle?

The breakeven for the VST straddle priced on this page is roughly $136.45 and $173.55 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 VST market-implied 1-standard-deviation expected move is approximately 14.68%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.

How does current VST implied volatility affect this straddle?

VST ATM IV is at 51.20% with IV rank near 35.13%, 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.

VST Straddle Strategy

VST (Vistra Corp.), in the Utilities sector, (Independent Power Producers industry), listed on NYSE.

Vistra Corp., along with its various holdings, functions as a unified entity primarily engaged in retail electricity supply and power generation. The company organizes its operations across six distinct segments: Retail, Texas, East, West, Sunset, and Asset Closure. It directly provides electricity and natural gas to residential, commercial, and industrial clients throughout 20 U.S. states and the District of Columbia. Beyond its retail endeavors, Vistra also participates in generating electricity, facilitating wholesale energy transactions, managing commodity-related risks, producing fuel, and overseeing fuel logistics. With approximately 4.3 million customers, Vistra commands an impressive generation capacity of about 38,700 megawatts. This capacity is sustained by a diverse portfolio of facilities, including those powered by natural gas, nuclear energy, coal, solar, and advanced battery energy storage systems.

VST (Vistra Corp.) trades in the Utilities sector, specifically Independent Power Producers, with a market capitalization of approximately $55.13B, a trailing P/E of 24.79, a beta of 1.41 versus the broader market, a 52-week range of 132.66-219.82, average daily share volume of 4.6M, a public-listing history dating back to 2016, approximately 7K full-time employees. These structural characteristics shape how VST stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.

A beta of 1.41 indicates VST has historically moved more than the broader market, amplifying both the directional payoff and the realized volatility relative to an index-equivalent position. VST pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.

What is a straddle on VST?

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 VST snapshot

As of June 30, 2026, spot at $157.41, ATM IV 51.20%, IV rank 35.13%, expected move 14.68%. The straddle on VST 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 31-day expiry.

Why this straddle structure on VST specifically: VST IV at 51.20% 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 14.68% (roughly $23.10 on the underlying). The 31-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated VST expiries trade a higher absolute premium for lower per-day decay. Position sizing on VST should anchor to the underlying notional of $157.41 per share and to the trader's directional view on VST stock.

VST straddle setup

The VST 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 VST near $157.41, the first option leg uses a $155.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed VST chain at a 31-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 VST shares for the stock leg in covered calls and collars).

Action	Type	Strike / Basis	Premium (est)
Buy 1	Call	$155.00	$10.73
Buy 1	Put	$155.00	$7.83

VST straddle risk and reward

Net Premium / Debit: -$1,855.00
Max Profit (per contract): Unbounded
Max Loss (per contract): -$1,850.79
Breakeven(s): $136.45, $173.55
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.

VST straddle payoff curve

Modeled P&L at expiration across a range of underlying prices for the straddle on VST. 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%	+$13,644.00
$34.81	-77.9%	+$10,163.69
$69.62	-55.8%	+$6,683.38
$104.42	-33.7%	+$3,203.07
$139.22	-11.6%	-$277.25
$174.03	+10.6%	+$47.56
$208.83	+32.7%	+$3,527.87
$243.63	+54.8%	+$7,008.18
$278.43	+76.9%	+$10,488.49
$313.24	+99.0%	+$13,968.80

When traders use straddle on VST

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

VST thesis for this straddle

The market-implied 1-standard-deviation range for VST extends from approximately $134.31 on the downside to $180.51 on the upside. A VST 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 VST IV rank near 35.13% is mid-range against its 1-year distribution, so the IV signal is neutral; the straddle thesis on VST should anchor more to the directional view and the expected-move geometry. As a Utilities name, VST options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to VST-specific events.

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

Frequently asked questions

What is a straddle on VST?: A straddle on VST is the straddle strategy applied to VST (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 VST stock trading near $157.41, the strikes shown on this page are snapped to the nearest listed VST chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
How are VST 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 VST straddle priced from the end-of-day chain at a 30-day expiry (ATM IV 51.20%), the computed maximum profit is unbounded per contract and the computed maximum loss is -$1,850.79 per contract. Live intraday quotes will differ as the chain moves through the trading session.
What is the breakeven for a VST straddle?: The breakeven for the VST straddle priced on this page is roughly $136.45 and $173.55 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 VST market-implied 1-standard-deviation expected move is approximately 14.68%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
When should you consider a straddle on VST?: Straddles on VST are pure-volatility plays that profit from large moves in either direction; traders typically buy VST 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 VST implied volatility affect this straddle?: VST ATM IV is at 51.20% with IV rank near 35.13%, 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.