Cash-and-Carry Basis Trade on Hyperliquid: Step-by-Step

The cash-and-carry basis trade is one of the cleanest yield sources in crypto: buy spot, short the perpetual, collect the funding rate differential. On Hyperliquid the mechanics are tight enough — deep liquidity, low fees, on-chain settlement — that the trade is worth running systematically rather than occasionally. Here is how we actually build and manage it.

What You Are Actually Capturing

A Hyperliquid perpetual continuously converges to the index price via an 8-hour funding payment. When the market is in contango — perp premium over spot — longs pay shorts. Your position is:

• Long spot (e.g. SOL on a CEX or DEX with good liquidity)
• Short perp at equal notional on Hyperliquid

The delta cancels. What remains is the funding rate accrual minus fees minus borrow cost on the spot leg. On a crowded long market this annualises at 15–40% APR on the notional. On quieter days it compresses to 5–8%. The job is to stay in when the rate is attractive and exit cleanly when it is not.

Funding on Hyperliquid pays every hour (not 8-hourly like Binance), which matters for compounding math and for deciding whether a partial-day hold is worth the transaction cost.

Sizing and Margin Requirements

Hyperliquid operates a cross-margin account by default. For a clean basis book you want isolated margin per position so a liquidation on one leg does not cascade. Switch the perp position to isolated before entry.

The short leg on a 1× delta-neutral structure requires roughly 12–15% initial margin at 5× leverage for most mid-cap assets. Leave a buffer: fund the isolated account to 20% of notional to absorb a 10–15% adverse move before you need to top up. At 5× leverage a 10% rally in the underlying sends the perp margin ratio toward the maintenance threshold — you must post more margin or the spot gain becomes a forced rebalance event.

Practical sizing rule: never let the short leg exceed 80% of the maximum isolated margin you are willing to lock. Keep the remaining 20% in USDC on Hyperliquid as a ready top-up buffer. This avoids on-chain latency risk when the market moves fast.

Entry Execution

Do not market-order both legs simultaneously and call it a day. The round-trip fee on Hyperliquid is 0.035% maker / 0.1% taker per side. At 1× the fee drag on a 30-day hold is roughly 0.2% round-trip — marginal. The risk is slippage asymmetry: if you lift the perp offer then miss the spot bid, you are short basis for a few seconds and exposed to gap risk.

The sequence that works in production:

1. Leg spot first using a limit order within 3 bps of mid. Spot fills are deterministic once on the book.
2. Leg the perp short immediately after spot confirms. Use a limit at best-bid or post-only to capture maker rebate. Accept a 1–2 minute window of naked long spot — this is the tightest exposure you will have.
3. Record the achieved basis (perp entry minus spot entry). If the basis at fill is below your minimum threshold, exit both legs. Do not rationalise a bad entry.

For larger size (above $200k notional) split into 3–5 tranches over 10-minute intervals to avoid moving the perp mid against yourself.

Roll and Exit Timing

The position has no natural expiry — this is a perp, not a dated future — so you define the roll. Exit when any of these conditions are met:

• Funding flips negative: even one hour of negative funding on an otherwise positive-funding day erodes the edge. If the 4-hour TWAP of the funding rate drops below your fee breakeven (approximately 0.005% per hour for a taker entry), close.
• Basis compresses to under 1.5× fees: the trade is not worth holding through volatility for sub-par yield.
• Spot-perp spread inverts: sometimes the perp trades below spot during a liquidation cascade. Close the short, hold spot, and re-enter later.

The /services/bots infrastructure we run for clients monitors funding every 60 seconds and triggers a close signal automatically when the rate drops through threshold — human latency on these decisions costs real money.

Hedging the Residual Risks

The trade is not risk-free. Three residual exposures matter:

Spot custody risk. If your spot leg sits on a CEX, exchange insolvency is a real tail. We hold spot on-chain (Drift or Jupiter limit orders for SOL, bridged USDC for stablecoin collateral) and accept slightly wider spreads.

Liquidation gap risk. A 20%+ candle in seconds can gap through your isolated margin buffer before the top-up transaction lands. Mitigate with a tighter buffer (30% margin ratio target rather than 20%) or by sizing below maximum.

Funding rate manipulation. On lower-liquidity assets a coordinated long can push funding to 0.3%+ per hour briefly, then unwind — leaving you with a position entered at a rate that will not persist. Stick to the top 5 assets by Hyperliquid open interest. SOL-PERP and ETH-PERP have deep enough books that funding manipulation is expensive.

Net APR Reality Check

A representative live trade on SOL-PERP as of recent months:

Component	Rate (annualised)
Funding income	+22%
Entry/exit fees (30-day hold)	-2.4%
Spot opportunity cost (vs T-bill)	-4.5%
Net APR	~15%

That 15% is on notional, not on posted margin. If you run 5× leverage on the short leg the return on margin is closer to 60% — but so is the liquidation risk if you do not manage the buffer. Most production implementations we run sit at 3–4× on the perp leg for a net margin return of 35–45%.

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If you want this running as a fully automated, monitored strategy rather than a manual spreadsheet exercise, talk to us — we build and operate exactly this class of infrastructure.