What delta-neutral means
A delta-neutral position holds offsetting long and short exposure to the same asset, so the price going up or down (the "delta") roughly cancels out. The return comes not from predicting direction but from structural inefficiencies: price differences between venues, funding payments, or the gap between spot and futures.
Delta-neutral does not mean risk-free. Execution risk (one leg fills, the other doesn't), counterparty risk (the exchange itself), and liquidation risk on leveraged legs all remain — the strategies below differ mostly in WHICH of these risks dominates.
Cross-exchange spread arbitrage
Long a perpetual on the exchange where it trades cheaper, short it where it trades richer; close both when the gap reverts. Returns come from many small cycles — fractions of a percent each, repeated whenever liquidity fragmentation opens a gap. Funding often adds a tailwind, since the richer side tends to pay the short.
The dominant risk is execution: both legs must fill near-simultaneously at expected prices, which makes this the most automation-dependent of the three — humanly impossible at the timescales where the spreads live, viable with parallel order placement and full-depth orderbooks. Capital is moderately efficient since both legs use leverage.
Funding-rate arbitrage
Hold a long perp on the exchange where funding is deeply negative (shorts pay you for being long) and a short where funding is positive (longs pay you for being short) — collecting both sides of the differential every settlement while price exposure cancels. Positions are held for hours to days, not seconds.
The dominant risk is rate decay: funding rates revert, and the spread you entered for can vanish before your accumulated payments cover the four taker fees of entry and exit. Interval mismatches (see funding intervals) and settlement timing decide profitability at the margin — slower-paced than spread arbitrage, but the math discipline matters just as much.
Cash-and-carry
Buy the asset on spot, short the same notional in perpetual futures, and collect funding on the short while the spot holding hedges it — the crypto version of the oldest basis trade in finance. In sustained bull markets, when crowded longs keep funding positive for weeks, this can yield double-digit APR with a simple structure.
It is the most capital-hungry of the three (spot is unleveraged, so half your capital earns nothing directly) and the least active — but also the gentlest operationally: no race against bots, liquidation risk only on the short leg, and the position survives hours of inattention. The cost is sensitivity to regime change: when funding flips negative across the market, the carry disappears.
Choosing: a side-by-side view
Rough comparison: spread arbitrage — return from price gaps, cycles of seconds-to-minutes, execution risk dominates, automation mandatory. Funding arbitrage — return from rate differentials, positions of hours-to-days, rate-decay risk dominates, automation strongly helps. Cash-and-carry — return from sustained positive funding, positions of weeks, regime risk dominates, automation optional.
They are not mutually exclusive — many traders run carry as the base and spread/funding arbitrage opportunistically on top. Arbitron automates all three modes on your own exchange accounts; the public scanner shows live spread and funding opportunities, and the cash-and-carry screen ranks carry yields — so you can compare today's actual numbers before committing capital to any of them.