Read crypto derivatives through their cash flows: dated futures, perpetual funding, option rights, settlement currencies and a fictional exposure-versus-equity ledger.
Crypto derivatives
Crypto derivatives are financial contracts whose value or payments depend on a cryptocurrency, a crypto price index or another crypto-related reference. They allow a trader to hedge exposure, take a directional position or trade relative prices without necessarily taking delivery of the underlying coin.
The reference asset alone does not tell you the risk. A dated future, a perpetual and an option on the same asset can have different payment obligations, settlement currencies and collateral demands. For a quant, the first task is to translate the contract into a cash-flow ledger before estimating a return or building a hedge.
Long and short take ongoing price exposure without a scheduled expiry.
Funding, margin and the conditions under which the position can be closed by the venue.
Option
The buyer obtains a contractual right; the seller accepts the corresponding obligation.
Strike, expiry, exercise style, premium, multiplier and the actual settlement process.
An option payoff is not the buyer's profit: the premium and costs also matter. Nor does the word “option” establish that coins arrive in a wallet. For example, Deribit's current linear USDC options documentation describes in-the-money exercise into a matching future, followed immediately by that future's USDC cash settlement. It states that the net financial result matches direct cash settlement. This is a venue-specific procedure. Source: Deribit linear options.
A price loss is only one line of the account
Consider a fictional linear derivative, quoted and settled in USD. The trader is long a total of 2 underlying units, entered at 100 USD per unit and later marked at 90 USD per unit. The price component of profit and loss is
price P&L=q(P1−P0)=2(90−100)=−20 USD.
Here q is the underlying quantity after applying any contract multiplier. The initial notional amount is 200 USD, the reference exposure at entry. It is not the amount of collateral deposited and is not the price of buying this derivative position.
For the illustration, assume the trader posts 40 USD of collateral, subsequently pays 1 USD of funding and 1 USD in total trading fees. Assume no other cash flows, no change in the collateral's USD value and no forced close before the mark. Then
ending equity=40−20−1−1=18 USD.
Fictional linear long of 2 units entered at 100 USD per unit and marked at 90: initial notional 200 USD and price P&L −20 USD. From 40 USD collateral, subtract the price loss, 1 USD funding and 1 USD fees to obtain 18 USD equity. No forced close is modelled.
Original fictional USD ledger, with a fixed collateral value and no cash flows beyond those shown. The position is assumed to survive until this mark. Ending equity is neither a liquidation threshold nor necessarily withdrawable cash.
The deposit supplies collateral; it is not a trading expense. The price loss, funding payment and trading fees reduce equity. Depending on the venue's settlement and collateral rules, some marked equity may remain unavailable for withdrawal. A positive equity figure also does not establish that the account satisfies its maintenance margin requirement.
The linear formula is deliberately narrow. An inverse perpetual can quote exposure in dollars while settling profit and loss in the underlying coin. A quanto contract uses a contractually specified conversion between the price reference and payment currency. Neither should inherit the USD ledger above without translating its units and payoff. Option exposure also varies with price, time and volatility rather than behaving like a fixed quantity of the asset.
Funding is a separate contract mechanism
A perpetual's funding rate provides an incentive for its price to stay near the reference index; it does not guarantee equality.
Deribit's inverse perpetual documentation specifies that positive funding means longs pay shorts; negative funding reverses the direction. It quotes an eight-hour rate while accruing payments continuously. The rate's quotation period differs from transfer timing. Read the instrument's schedules, caps and calculation basis; there is no universal crypto funding interval. Source: Deribit inverse perpetual.
A short perpetual paired with long spot may collect funding, but the next rate can change sign. The basis, trading costs, hedge mismatch and capital tied up on the venue also affect the result. Observing positive funding is insufficient to establish an achievable net profit.
For a research workflow, the Crypto Basis and Funding project brief (membership required) scopes the comparison of carry trades alongside execution costs, collateral allocation and venue-risk limits. It is a project specification rather than a report of realised strategy results.
What can break the hedge before the endpoint?
The index price supplies a reference; the mark price values positions under venue risk rules; the last traded price records an execution. They need not coincide. Deribit distinguishes its perpetual mark calculation from the last trade. Source: inverse perpetual specifications.
A hedge designed around final prices can fail operationally if the account cannot maintain collateral along the way. Deribit's liquidation documentation describes automatic position reductions when equity is insufficient under its risk engine, without a preceding request to top up. Its treatment also differs across margin systems and instrument types. A simple “entry price divided by leverage” shortcut cannot replace those account rules. Source: Deribit liquidations.
Before combining positions, record the reference index, multiplier, quote unit, collateral asset, settlement currency, funding rules, exercise or expiry procedure and liquidation rules. Then ask whether the intended offset still works when collateral values change, prices diverge or one venue cannot process a transfer. Matching the direction of price exposure is only the beginning of a workable hedge.
John C. Hull, Options, Futures, and Other Derivatives, ninth edition, Global Edition, Pearson, 2018: Chapter 1, introduction and Section 1.3; Section 30.3 on quantos. Used for general derivative and payoff concepts; current venue conventions use the sources above.
