Funding and Basis Capture: Structural Carry in Perpetual and Futures Markets

Carry exists, but it is regime-dependent. The edge is in sizing, financing, and the ability to exit when the regime flips.

Funding and basis in one paragraph

Perpetual funding is a mechanism designed to anchor a perpetual swap price to spot by transferring payments between longs and shorts. Futures basis reflects the price of leverage and balance-sheet in a fixed-maturity format. Both can create systematic carry opportunities, but neither is a free lunch.

Why carry shows up

Digital asset markets repeatedly exhibit one-sided leverage demand. During risk-on periods, levered longs often dominate and pay funding. In other regimes, funding can compress, oscillate, or turn negative as positioning flips.

Basis similarly reflects the cost of capital, inventory, and hedging demand. It can widen during constrained balance sheet periods and compress when leverage becomes cheap.

Two common implementations

Perp carry. A manager can hold hedged exposures where funding is expected to be paid by the dominant side of leverage demand. The edge is not simply ‘collect funding’; it is selecting venues and sizing so that the strategy can survive sign flips and volatility shocks.

Cash-and-carry. In futures markets, a classic approach is to hold spot and short futures (or the reverse) to capture basis. The main sensitivities are financing, margin, and the ability to roll or unwind without paying away the edge in slippage and fees.

Carry in stress

Stress regimes are where carry strategies are tested. Funding can spike, exchanges can raise margin, and hedges can become expensive exactly when the strategy needs to reduce exposure. The practical question is how the strategy behaves when carry turns into a cost at the same time liquidity deteriorates.

Conservative sizing, diversified venue exposure, and pre-funded collateral buffers matter more than clever models in these moments.

The trap: underwriting the average

A common mistake is to underwrite carry based on long-run averages. Carry is path dependent: the worst outcomes often occur when carry disappears at the same time volatility rises and liquidity deteriorates.

A robust approach focuses on how quickly the strategy can reduce exposure when funding turns against you or when basis compresses, and what the financing and margin mechanics look like under stress.

Implementation matters

Carry strategies are operational strategies. They require tight execution, conservative collateral policy, and clear limits on gross exposure.

They also require a plan for the messy moments: exchange or venue disruption, basis dislocations, funding spikes, and forced deleveraging events. The goal is not to avoid every drawdown; it is to prevent small problems from becoming forced liquidations.

Controls that determine outcomes

In our experience, a handful of controls determine whether carry is harvested or given back: conservative gross exposure caps, strict venue concentration limits, explicit stop and de-risk rules when funding/basis regimes flip, and a collateral policy that assumes margin can rise quickly.

The goal is to keep the strategy optional: able to reduce risk without becoming a forced buyer or seller.

When we step back

Carry is not always worth taking. When liquidity is thin, financing is unstable, or venue reliability is questionable, the expected carry can be overwhelmed by tail risk.

A disciplined process includes the ability to reduce or pause exposure when conditions do not compensate the risk.

What we monitor

• Funding and basis levels and their dispersion across venues (including sign changes).
• Liquidity and slippage estimates for hedge legs under stress assumptions.
• Margin utilization and liquidation distance under volatility shocks.
• Concentration by venue and maturity bucket (for futures).
• Financing frictions: borrowing rates, collateral haircuts, and withdrawal constraints.

Takeaways

Funding and basis capture can be a meaningful return engine for market-neutral programs, but it must be sized for the regime you are in, not the regime you hope for.

The most important questions are about exits: how quickly exposure can be reduced, and what it costs to do so when everyone is heading for the door.

Inquiries: cedric@monet.capital

Disclaimer: This material is provided for informational purposes only and does not constitute investment advice or an offer to sell interests in any fund or strategy. Any forward-looking statements are subject to change.