BOSS

Call Ratio Spread (Front Spread)

Description

Buying one at-the-money call and selling two calls further out of the money, financing most or all of the long call with the extra short premium.

Setup

  1. Buy one call at the money.
  2. Sell two calls at a higher strike, same expiry.

Context

Used when a moderate rise up to the short strike is expected, and the trader is willing to accept uncapped risk beyond it in exchange for a very low, or negative, cost of entry.

Risk Profile

Maximum gain occurs at the short strike. Above it, the extra uncovered short call creates loss that grows without bound; below the long strike, the position is flat at its net cost.

Pros

  • Very low, sometimes negative, cost of entry.
  • Maximum profit at the short strike can be large relative to the cost.
  • Benefits from time decay on the short calls.

Cons

  • Uncapped risk above the short strike.
  • Needs active management if the underlying rallies hard.

Effect of Time

Time decay generally helps, since there are more short options than long ones.

Effect of Volatility

A rise in implied volatility generally hurts the position, since the short calls outnumber the long call.

Look-Alike Strategies

Live Structure

Live
Index price: $84366.3000
PositionRightRatioStrikeExpiryPremiumFill PriceEst. Fee
Long Call 1 $84500.0000 24 Sep 2026 $189.8654 $210.9616 $23.7332
Short Call 2 $85000.0000 24 Sep 2026 $67.5077 $59.0692 $16.8769
Net Cost$54.8500
Delta0.0661
Gamma-0.0001
Vega-3.3872
Theta11.8870
Rho0.0512
Breakeven(s) $84554.8500, $85445.1500

Estimated Cost to Assemble

An estimate of what entering this structure right now would really cost: filling every leg by crossing the spread (the ask when buying, the bid when selling) instead of at the mid-price, plus an estimated exchange fee. Real fees and fills can differ from this estimate.

Mid-Price Cost$54.8500
Slippage+$37.9731
Execution Cost$92.8231
Estimated Fees+$40.6101
Total Estimated Cost$133.4332

Payoff & Greeks vs. Underlying Price

The Greeks curves are a Black-Scholes model using each leg's current implied volatility, holding time to expiry fixed -- not live exchange data at every price, which only exists at the current price (dashed line).

Payoff at Expiration

This structure's value and profit/loss at expiration, at a handful of specific prices: every leg's strike, every breakeven, the current spot, and the chart's own range.

Underlying PriceValue at ExpirationProfit / LossReturn on Cost
$84000.0000 $0.0000 -$54.8500 -100.0%
$84384.6400 current $0.0000 -$54.8500 -100.0%
$84500.0000 $0.0000 -$54.8500 -100.0%
$84554.8500 breakeven $54.8500 $0.0000 +0.0%
$85000.0000 $500.0000 $445.1500 +811.6%
$85445.1500 breakeven $54.8500 $0.0000 +0.0%
$85500.0000 $0.0000 -$54.8500 -100.0%

Delta (model)

Gamma (model)

Vega (model)

Theta (model)

Rho (model)