Crypto persistently pays a premium to be long via leverage, and two market-neutral trades exist to harvest it: the dated-futures cash-and-carry and the perpetual funding capture. Both are "delta-neutral carry," but their mechanics and risks differ in ways worth knowing.

Cash-and-carry (dated futures)

The classic basis trade: buy spot, short a dated future trading at a premium, and hold to expiry where the future converges to spot. You pocket the basis — the premium — as it decays to zero. Direction nets out because you are long and short the same asset.

  • Income source: the futures premium (basis), realized through convergence at a fixed expiry.
  • Horizon: defined — the expiry date.
  • Roll: to maintain it past expiry, you roll to the next contract, paying or receiving the new basis.

Funding capture (perpetuals)

The perp equivalent: when funding is positive, longs pay shorts. So buy spot, short the perp, and collect funding each interval while staying delta-neutral. As long as funding stays positive, the short perp leg pays you.

  • Income source: the funding rate, received every funding interval (typically 8 hours).
  • Horizon: open-ended — no expiry, you hold while funding is favourable.
  • Risk: funding can flip negative, turning the income into a cost, so the trade requires active monitoring.

Where the risks sit

"Market-neutral" is not "risk-free." Both trades share core hazards and have distinct ones:

  1. Margin/liquidation risk (both) — the short leg requires margin; a sharp rally creates variation-margin pressure on the short before the offsetting spot gain is realized. Underfunded carry blows up on the hedge leg.
  2. Funding-flip risk (perp version) — positive funding can turn negative, eroding or reversing the income. This is the perp trade's defining risk.
  3. Roll/convergence risk (futures version) — basis can compress or invert at the roll, and the path to convergence can be ugly even though the endpoint is fixed.
  4. Execution and venue risk (both) — slippage entering/exiting, and exchange or custody risk on the legs.

Which to use

The choice tracks horizon and rate environment. Dated cash-and-carry suits a defined horizon and a clean, fat basis; funding capture suits an open-ended hold while funding is reliably positive but demands active management of the flip risk. Desks often run both and rotate to wherever the annualized return — basis versus funding — is richest relative to funding costs. As capital floods the better trade, the premium compresses, which is why these returns are competed down over time.

Takeaway

Cash-and-carry harvests the dated-futures basis through convergence at a fixed expiry; funding capture collects perpetual funding open-endedly while it stays positive. Both are delta-neutral but carry margin and liquidation risk on the short leg, with the perp trade exposed to funding flips and the futures trade to roll and convergence path. Run whichever pays more relative to funding costs, and respect that the premium gets competed away.