BOSS

Short Combo

Description

Selling an out-of-the-money call and buying an out-of-the-money put, a cheaper, more leveraged stand-in for a short position in the underlying.

Setup

  1. Sell one out-of-the-money call.
  2. Buy one out-of-the-money put, same expiry.

Context

Used as a lower-cost, higher-leverage alternative to a short future or perpetual, when a decline is expected and the gap between the strikes is an acceptable dead zone.

Risk Profile

Below the put strike, gain grows as the underlying falls, bounded only by zero. Above the call strike, loss grows without bound. Between the strikes, the position is flat at its net cost.

Pros

  • No short future or perpetual needed, so no exposure to changing funding rates; the carry is locked into the option prices.
  • Large gain potential on a decline.
  • Can often be set up for a small credit or low cost.

Cons

  • Uncapped upside risk above the call strike.
  • Flat zone between the strikes means no gain from small moves.
  • The short call can trigger margin calls if the underlying rallies sharply before expiry.

Effect of Time

Time decay has a modest net effect, since the two legs partially offset each other.

Effect of Volatility

A change in implied volatility has a limited net effect, since the call and put move in opposite ways that partially cancel out.

Look-Alike Strategies

Live Structure

Saves the structure above, at the execution prices on screen, to Paper trading in this browser.

Live
Index price: $74858.6400
Position?Right?RatioStrikeExpiryIV?Premium?Fill Price?Liquidity?Est. Fee?
Short Call 1 $76000.0000 20 Nov 2026 38.2% $1480.9383 $1462.1923 3.2000 $22.4953
Long Put 1 $74000.0000 20 Nov 2026 39.2% $1499.6844 $1537.1765 23.7000 $22.4953
Max Profit?Uncapped
Max Loss?Uncapped
Prob. of Profit?42%
Max Profit / Max Loss?—
DTE?10
Loss is unlimited: a large enough move against this position can cost more than any figure shown here.
Net Cost?$119.9748
Delta?-0.8382
Gamma?0.0000
Vega?-0.5703
Theta?-1.3420
Rho?-17.9765
Breakeven(s)? $73880.0252

Net cost, breakevens, the payoff chart and the scenario table are after costs: every leg filled by crossing the spread, estimated fees included -- the same numbers the Scanner ranks by.

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$18.7461
Slippage?+$56.2382
Execution Cost$74.9842
Estimated Fees?+$44.9905
Total Estimated Cost$119.9748

Compare venues

These exact contracts -- same strikes, expiries and ratios -- on every venue BOSS tracks for this currency, at execution: what selling (bid) or buying (ask) each leg there comes to, after that venue's own fee. Green marks the best venue for each leg and for the whole structure.

Deribit this pageBybitOKX
Index?$74858.6400$74952.0677$74864.4000
Mid-Price Cost$18.7461-$20.0000$74.9975
Slippage?+$56.2382+$5.0000+$37.4987
Estimated Fees?+$44.9905+$45.1114+$44.9985
Total Estimated Cost$119.9748$30.1114$89.8600 better than this page$157.4947$37.5200 worse than this page
Max Profit?UncappedUncappedUncapped
Max Loss?UncappedUncappedUncapped
Breakeven(s)?$73880.0252$73969.8886$73842.5053
Structure IV?38.7%38.0%38.5%
Open on this venue →Open on this venue →

Each leg: what it nets there per contract (fill price with the fee folded in), then the fill price, fee, IV and the size quoted at that price.

Pro Per-leg prices and the best venue for each leg are BOSS Pro. See what Pro includes

For comparing prices, not a recommendation: quotes move by the second, size is only what's shown at the top of the book, fees are each venue's published estimate, and the venues settle against different indexes and margin separately.

Market Context

This expiry as the Dashboard sees it: how the legs are priced against at-the-money and realized volatility, and where the expiry's forward sits against spot.

Structure IV?38.7%
ATM IV (this expiry)?38.5%
RV 7d?55.7%
IV − RV?-17.2
Forward?$74984.2200
Basis?+0.168% (+5.9% /yr)

Volatility Smile?

Implied volatility across strikes at this expiry; the marked lines are this structure's strikes. Buying on the high part of the curve pays up for volatility; selling there collects it.

Leg bought Leg sold

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

After costs At mid price

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
$72000.0000 $2000.0000 $1880.0252 +1567.0%
$73880.0252 breakeven $119.9748 $0.0000 +0.0%
$74000.0000 $0.0000 -$119.9748 -100.0%
$74984.3800 current $0.0000 -$119.9748 -100.0%
$76000.0000 $0.0000 -$119.9748 -100.0%
$78000.0000 -$2000.0000 -$2119.9748 -1767.0%

Delta (model)?

Gamma (model)?

Vega (model)?

Theta (model)?

Rho (model)?

Alternatives

From the Scanner's latest pass (21:35:48 UTC), priced at execution like everything above.

Same payoff through other strategies

None found in the latest scan.

Other strikes and widths of this strategy

None found in the latest scan.

Pro "If opened N days ago" is BOSS Pro. See what Pro includes