BOSS

Call Diagonal Spread

Description

Buying a longer-dated call at a lower strike and selling a near-term call at a higher strike, combining a calendar's time-decay edge with a bullish directional tilt.

Setup

  1. Buy one call at a lower strike, a later expiry.
  2. Sell one call at a higher strike, near-term expiry.

Context

Used when a gradual rise is expected, letting the near-term short call fund part of the cost of the longer-dated long call.

Risk Profile

Maximum loss is the net debit paid. Maximum gain depends on both legs' remaining value if the underlying sits at the short strike at the near-term expiry, and is larger than a same-strike calendar thanks to the directional tilt.

Pros

  • Lower cost than an outright longer-dated call.
  • Directional tilt gives it a clearer edge than a flat calendar.
  • Short near-term call generates income against the long position.

Cons

  • More moving parts than a single-expiry spread, harder to price and manage.
  • Needs the move to happen gradually rather than all at once before the near-term expiry.

Effect of Time

Time decay generally helps, since the near-term short call decays faster than the longer-dated long call.

Effect of Volatility

A rise in implied volatility in the back-month option increases the position's value.

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?
Long Call 1 $74000.0000 27 Nov 2026 38.2% $3079.3095 $3116.8621 33.0000 $22.5315
Short Call 1 $76000.0000 20 Nov 2026 38.2% $1500.0128 $1462.5125 8.5000 $22.5002
Max Profit?—
Max Loss?—
Prob. of Profit?—
Max Profit / Max Loss?—
DTE?10

Max Profit/Max Loss aren't shown for calendar and diagonal strategies: their near and far legs settle at different expiries, which this scanner's payoff model doesn't account for.

Net Cost?$1699.3813
Delta?0.1553
Gamma?-0.0000
Vega?14.0887
Theta?21.0912
Rho?10.7527
Breakeven(s)? $75699.3813

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$1579.2967
Slippage?+$75.0529
Execution Cost$1654.3496
Estimated Fees?+$45.0317
Total Estimated Cost$1699.3813

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?$74877.7500$74971.8621$74879.7000
Mid-Price Cost$1579.2967$1602.5000$1578.1878
Slippage?+$75.0529+$12.5000+$37.5230
Estimated Fees?+$45.0317+$45.1188+$45.0276
Total Estimated Cost$1699.3813$1660.1188$39.2600 better than this page$1660.7384$38.6400 better than this page
Max Profit?———
Max Loss?———
Breakeven(s)?———
Structure IV?38.2%38.0%38.0%
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?38.2%
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
$72000.0000 $0.0000 -$1699.3813 -100.0%
$74000.0000 $0.0000 -$1699.3813 -100.0%
$75000.6400 current $1000.6400 -$698.7413 -41.1%
$75699.3813 breakeven $1699.3813 $0.0000 +0.0%
$76000.0000 $2000.0000 $300.6187 +17.7%
$78000.0000 $2000.0000 $300.6187 +17.7%

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?
Call Diagonal Spread71000/73000 Deribit · BTC — $2152.2609 — — — —
Call Diagonal Spread70000/74000 Deribit · BTC — $3578.3901 — — — —
Call Diagonal Spread69000/75000 Deribit · BTC — $5042.1274 — — — —
Pro "If opened N days ago" is BOSS Pro. See what Pro includes