Boros

Boros Long / Short ROI Rate Calculator

Reproduces the Boros long/short rate ROI based on user inputs. ROI shown is to-expiry ROI on collateral (not annualized). Rates can change rapidly. This is a snapshot estimate and ignores fees/liquidations. Receive 10% rebate on trading fees when you use referral code SCOUT.
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Market name
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Market ID
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Platform
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Underlying
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Expiry
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Settlement
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Next settlement
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Settlements remaining
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Units
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Max Leverage
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Funding symbol
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IY mid
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IY bid/ask
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Mark price
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OI (notional)
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24h volume
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Inputs

Defaults to current market
Long receives floating and pays fixed; short receives fixed and pays floating.
Choose whether you start from margin or notional.
Enter sizes in USD value or in token units.
Converted to token units using the current price.
marginUsed = funds × useFactor (lets you keep a buffer).
Floating leg rate used as rU = underlyingAPR / 100.
Used in ROI_boros and margin = PV_fixed / leverage.
1× 2× 3×

Denomination for your margin + notional.
Live price: fetching…
Fixed leg rate used as rF = impliedAPR / 100.
Time to expiry: T = daysRemaining / 365.
Used for the per-settlement breakdown (does not change ROI_boros).

Funding history

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Live
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7d avg
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30d avg
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IY mid
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7d hourly funding (APR%).

Outputs

ROI: —
ROI (to expiry)
Long ROI_boros
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Expected profit to expiry profit_T
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Margin used ⓘ
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Notional ⓘ
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Spread (Underlying − Implied) ⓘ
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PV_fixed (“initial cost/value”) ⓘ
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Pay to expiry (fixed) ⓘ
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Receive to expiry (floating) ⓘ
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Profit to expiry ⓘ
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Uses periodsPerYear = — and k = —.
Pay per — (fixed)
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Receive per — (floating)
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Profit per —
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Totals over k periods (≈ to expiry)
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