BOSS

Short Call (Naked Call)

Description

Selling a call option uncovered to collect premium, betting the underlying stays below the strike through expiry.

Setup

  1. Sell one call option, typically out of the money.
  2. Hold no offsetting position in the underlying.

Context

A pure income play for a trader who expects the underlying to stagnate or fall and is comfortable carrying uncapped upside exposure in exchange for the premium.

Risk Profile

Maximum gain is the premium collected. Loss grows without bound as the underlying rises above the strike, since there is no offsetting long position.

Pros

  • Collects premium immediately.
  • Profits from time decay working in your favor.
  • Does well in flat or falling markets.

Cons

  • Loss is theoretically unlimited on a sharp rally.
  • Usually requires significant margin.
  • One large adverse move can erase many prior wins.

Effect of Time

Time decay favors the seller; the position gains value every day the underlying stays below the strike.

Effect of Volatility

Rising implied volatility hurts the position by inflating the value of the short option.

Look-Alike Strategies

Live Structure

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

Live
Index price: $74858.6500
Position?Right?RatioStrikeExpiryIV?Premium?Fill Price?Liquidity?Est. Fee?
Short Call 1 $75000.0000 20 Nov 2026 38.5% $1949.5941 $1912.1019 24.7000 $22.4953
Max Profit?$1889.6066
Max Loss?Uncapped
Prob. of Profit?66%
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?-$1889.6066
Delta?-0.5117
Gamma?-0.0001
Vega?-50.5545
Theta?93.1943
Rho?-10.4138
Breakeven(s)? $76889.6066

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-$1949.5941
Slippage?+$37.4922
Execution Cost-$1912.1019
Estimated Fees?+$22.4953
Total Estimated Cost-$1889.6066

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?$74857.6500$74952.0677$74863.0000
Mid-Price Cost-$1949.5941-$1977.5000-$1931.1744
Slippage?+$37.4922+$2.5000+$18.7493
Estimated Fees?+$22.4953+$22.5557+$22.4991
Total Estimated Cost-$1889.6066-$1952.4443$62.8400 better than this page-$1889.9260$0.3200 better than this page
Max Profit?$1889.6066$1952.4443$1889.9260
Max Loss?UncappedUncappedUncapped
Breakeven(s)?$76889.6066$76952.4443$76889.9260
Structure IV?38.5%39.5%38.4%
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?$74984.3900
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
$60000.0000 $0.0000 $1889.6066 +100.0%
$74984.3900 current $0.0000 $1889.6066 +100.0%
$76889.6066 breakeven -$1889.6066 $0.0000 +0.0%
$90000.0000 -$15000.0000 -$13110.3934 -693.8%

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

Strategy Market vs. this one Credit/Debit Max Profit? Max Loss? Prob. of Profit? Max Profit / Max Loss?
Covered Put75000 Bybit · BTC $186.7352 -$77076.3418 $2076.3418 Uncapped 66% —
Covered Put75000 OKX · BTC -$2.2093 -$76887.3973 $1887.3973 Uncapped 66% —
Covered Put75000 Deribit · BTC -$6.2771 -$76883.3296 $1883.3296 Uncapped 66% —

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 Call (Naked Call)78000 Deribit · BTC — -$764.9336 $764.9336 Uncapped 78% —
Short Call (Naked Call)77000 Deribit · BTC — -$1064.9152 $1064.9152 Uncapped 74% —
Short Call (Naked Call)76000 Deribit · BTC — -$1439.8854 $1439.8854 Uncapped 70% —
Pro "If opened N days ago" is BOSS Pro. See what Pro includes