How are VST bull call spread max profit and max loss calculated?

Max profit equals strike width minus net debit times 100; max loss equals net debit times 100. Breakeven is long-call strike plus net debit. For the VST bull call spread priced from the end-of-day chain at a 30-day expiry (ATM IV 46.69%), the computed maximum profit is $607.50 per contract and the computed maximum loss is -$392.50 per contract. Live intraday quotes will differ as the chain moves through the trading session.

What is the breakeven for a VST bull call spread?

The breakeven for the VST bull call spread priced on this page is roughly $143.93 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 13.39%; 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 bull call spread?

VST ATM IV is at 46.69% with IV rank near 16.78%, 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.

VST Bull Call Spread Strategy

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

Vistra Corp., together with its subsidiaries, operates as an integrated retail electricity and power generation company. The company operates through six segments: Retail, Texas, East, West, Sunset, and Asset Closure. It retails electricity and natural gas to residential, commercial, and industrial customers across 20 states in the United States and the District of Columbia. The company is also involved in the electricity generation, wholesale energy purchases and sales, commodity risk management, fuel production, and fuel logistics management activities. It serves approximately 4.3 million customers with a generation capacity of approximately 38,700 megawatts with a portfolio of natural gas, nuclear, coal, solar, and battery energy storage facilities. The company was formerly known as Vistra Energy Corp. and changed its name to Vistra Corp. in July 2020.

VST (Vistra Corp.) trades in the Utilities sector, specifically Independent Power Producers, with a market capitalization of approximately $48.09B, a trailing P/E of 21.62, a beta of 1.45 versus the broader market, a 52-week range of 138.53-219.82, average daily share volume of 4.5M, 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 1.45 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 bull call spread on VST?

A bull call spread buys an at-the-money call and sells an out-of-the-money call at a higher strike for defined risk and defined reward bounded by the strike width.

Current VST snapshot

As of May 15, 2026, spot at $140.69, ATM IV 46.69%, IV rank 16.78%, expected move 13.39%. The bull call spread 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 28-day expiry.

Why this bull call spread structure on VST specifically: VST IV at 46.69% is on the cheap side of its 1-year range, which favors premium-buying structures like a VST bull call spread, with a market-implied 1-standard-deviation move of approximately 13.39% (roughly $18.83 on the underlying). The 28-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 $140.69 per share and to the trader's directional view on VST stock.

VST bull call spread setup

The VST bull call spread 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 $140.69, the first option leg uses a $140.00 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 28-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	$140.00	$7.80
Sell 1	Call	$150.00	$3.88

VST bull call spread risk and reward

Net Premium / Debit: -$392.50
Max Profit (per contract): $607.50
Max Loss (per contract): -$392.50
Breakeven(s): $143.93
Risk / Reward Ratio: 1.548

Max profit equals strike width minus net debit times 100; max loss equals net debit times 100. Breakeven is long-call strike plus net debit.

VST bull call spread payoff curve

Modeled P&L at expiration across a range of underlying prices for the bull call spread 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.

Underlying Price	% From Spot	P&L at Expiration
$0.01	-100.0%	-$392.50
$31.12	-77.9%	-$392.50
$62.22	-55.8%	-$392.50
$93.33	-33.7%	-$392.50
$124.43	-11.6%	-$392.50
$155.54	+10.6%	+$607.50
$186.65	+32.7%	+$607.50
$217.75	+54.8%	+$607.50
$248.86	+76.9%	+$607.50
$279.97	+99.0%	+$607.50

When traders use bull call spread on VST

Bull call spreads on VST reduce the cost of a bullish VST stock position by selling a higher-strike call; suited to moderate-move theses where price reaches but does not vastly exceed the short strike.

VST thesis for this bull call spread

The market-implied 1-standard-deviation range for VST extends from approximately $121.86 on the downside to $159.52 on the upside. A VST bull call spread caps both the risk and the reward of a bullish position; relative to an outright long call on VST, the spread reduces the cost basis but limits the maximum profit to the strike width minus net debit. Current VST IV rank near 16.78% 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 VST at 46.69%. 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 bull call spread positions are structurally moderately bullish; 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. Long-premium structures like a bull call spread on VST are particularly exposed to IV-crush risk through scheduled events (earnings, FDA decisions, central-bank meetings) where IV typically contracts post-event regardless of the directional outcome. Always rebuild the position from current VST chain quotes before placing a trade.

Frequently asked questions

What is a bull call spread on VST?: A bull call spread on VST is the bull call spread strategy applied to VST (stock). The strategy is structurally moderately bullish: A bull call spread buys an at-the-money call and sells an out-of-the-money call at a higher strike for defined risk and defined reward bounded by the strike width. With VST stock trading near $140.69, 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 bull call spread max profit and max loss calculated?: Max profit equals strike width minus net debit times 100; max loss equals net debit times 100. Breakeven is long-call strike plus net debit. For the VST bull call spread priced from the end-of-day chain at a 30-day expiry (ATM IV 46.69%), the computed maximum profit is $607.50 per contract and the computed maximum loss is -$392.50 per contract. Live intraday quotes will differ as the chain moves through the trading session.
What is the breakeven for a VST bull call spread?: The breakeven for the VST bull call spread priced on this page is roughly $143.93 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 13.39%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
When should you consider a bull call spread on VST?: Bull call spreads on VST reduce the cost of a bullish VST stock position by selling a higher-strike call; suited to moderate-move theses where price reaches but does not vastly exceed the short strike.
How does current VST implied volatility affect this bull call spread?: VST ATM IV is at 46.69% with IV rank near 16.78%, 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.