BOSS

Short Straddle

Description

Selling a call and a put at the same strike and expiry, collecting double premium on a bet that the underlying stays close to the strike.

Setup

  1. Sell one call at the money.
  2. Sell one put at the same strike and expiry.

Context

Used when a large move is considered unlikely and implied volatility looks rich relative to the expected actual movement.

Risk Profile

Maximum gain is the combined premium collected, realized if the underlying finishes exactly at the strike. Loss grows without bound on a large move in either direction.

Pros

  • Collects two premiums at once.
  • Profits from time decay every day the underlying stays near the strike.
  • Benefits from a drop in implied volatility.

Cons

  • Unlimited loss potential on a large move.
  • Requires significant margin.
  • A single sharp move can erase a long run of small wins.

Effect of Time

Time decay strongly favors the position; both short options lose value every day the underlying stays near the strike.

Effect of Volatility

A rise in implied volatility hurts the position by inflating the value of both short options.

Look-Alike Strategies

Live Structure

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

Live
Index price: $74877.7500
Position?Right?RatioStrikeExpiryIV?Premium?Fill Price?Liquidity?Est. Fee?
Short Call 1 $75000.0000 20 Nov 2026 38.5% $1950.0166 $1912.5163 81.5000 $22.5002
Short Put 1 $75000.0000 20 Nov 2026 38.5% $1950.0166 $1912.5163 20.7000 $22.5002
Max Profit?$3780.0323
Max Loss?Uncapped
Prob. of Profit?56%
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?-$3780.0323
Delta?-0.0261
Gamma?-0.0002
Vega?-101.1338
Theta?186.4185
Rho?0.5542
Breakeven(s)? $71219.9677, $78780.0323

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-$3900.0333
Slippage?+$75.0006
Execution Cost-$3825.0326
Estimated Fees?+$45.0004
Total Estimated Cost-$3780.0323

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?$74877.7000$74971.8621$74879.7000
Mid-Price Cost-$3900.0333-$3895.0000-$3862.9873
Slippage?+$75.0006+$5.0000+$37.5047
Estimated Fees?+$45.0004+$45.0809+$45.0057
Total Estimated Cost-$3780.0323-$3844.9191$64.8900 better than this page-$3780.4769$0.4400 better than this page
Max Profit?$3780.0323$3844.9191$3780.4769
Max Loss?UncappedUncappedUncapped
Breakeven(s)?$71219.9677, $78780.0323$71155.0809, $78844.9191$71219.5231, $78780.4769
Structure IV?38.5%38.8%38.3%
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?38.5%
ATM IV (this expiry)?38.5%
RV 7d?55.7%
IV − RV?-17.2
Forward?$75000.6400
Basis?+0.164% (+5.7% /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
$60000.0000 -$15000.0000 -$11219.9677 -296.8%
$71219.9677 breakeven -$3780.0323 $0.0000 +0.0%
$75000.0000 current $0.0000 $3780.0323 +100.0%
$78780.0323 breakeven -$3780.0323 $0.0000 +0.0%
$90000.0000 -$15000.0000 -$11219.9677 -296.8%

Delta (model)?

Gamma (model)?

Vega (model)?

Theta (model)?

Rho (model)?

Alternatives

From the Scanner's latest pass (21:31:48 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

Strategy Market vs. this one Credit/Debit Max Profit? Max Loss? Prob. of Profit? Max Profit / Max Loss?
Short Straddle72000 Deribit · BTC — -$4605.0325 $4605.0325 Uncapped 59% —
Short Straddle73000 Deribit · BTC — -$4192.5375 $4192.5375 Uncapped 58% —
Short Straddle74000 Deribit · BTC — -$3892.5275 $3892.5275 Uncapped 57% —
Pro "If opened N days ago" is BOSS Pro. See what Pro includes