Jelly Roll Calculator
A jelly roll pairs a long call calendar spread with a short put calendar spread at the same strike. The directional exposure cancels, leaving a nearly flat payoff whose value comes from the difference in carrying costs — interest and dividends — between the two expirations.
Interactive calculator
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Key characteristics
- Long call calendar + short put calendar at the same strike: a flat payoff.
- Value is set by interest rates and dividends across the two expirations, not price.
- A defined, near-riskless arbitrage — a way to trade the cost of carry.
- Mainly a market-maker and educational structure; tiny edge after costs.
How a jelly roll works
Each calendar spans the same strike at a near and a far expiration. The long call calendar and short put calendar combine so that the stock-price exposure offsets — the position is worth roughly the same wherever the stock goes.
What is left is the difference in carrying costs between the two months: the financing cost of the stock and any dividend in between. The jelly roll isolates that "roll" value, which is why it behaves like a fixed-income trade rather than a directional bet.
Risks and reality
On paper it is near-riskless, but the practical frictions are real: four legs of commissions and bid/ask spreads, dividend timing that can change, and early assignment on the American-style short options, which breaks the symmetry.
Jelly rolls are mostly used by market-makers managing expiration and financing, and as a teaching example of how interest and dividends price into options. Retail traders rarely capture a worthwhile edge after costs.
Calculate it live
Use the free OptionProfit Jelly Roll calculator to load a live option chain, build the trade, and instantly see the payoff chart, breakevens, probability of profit, Greeks and a Monte Carlo simulation of outcomes.
- A long call calendar plus a short put calendar at one strike: flat payoff.
- It trades the cost of carry — interest and dividends — not direction.
- Near-riskless in theory; fees, dividends and early assignment erode it.
- A market-maker and educational tool, not a retail income trade.
Frequently asked questions
What does a jelly roll actually capture?
The difference in carrying costs — financing and dividends — between the near and far expirations. The price exposure cancels, leaving that "roll" value.
Is it really risk-free?
Almost, in theory. In practice early assignment on the American-style short options, dividend changes, and four sets of commissions and spreads can wipe out the small edge.
Why learn the jelly roll?
It is the clearest illustration of how interest rates and dividends are priced into calendar spreads, which matters whenever you roll or hold options across a dividend.
Assignment & Expiration
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