Hedgerows and the Prairie of Perpetuals

Picture the perpetual futures market as an open prairie: wide, always open and exposed to sudden weather. Hedgerows are the boundaries a farmer plants to stop the wind stripping the soil. In trading, those boundaries are margin, leverage limits and position rules. This guide covers how perpetuals work and the hedgerows that keep a strategy standing.

What a perpetual future is

A perpetual future is a derivative contract that tracks the price of an asset, such as Bitcoin, without ever expiring. Traditional futures settle on a fixed date; perpetuals can be held for minutes or months. You never own the underlying asset; you hold exposure to its price, long if you expect it to rise and short if you expect it to fall.

The funding rate

Without an expiry date, something has to keep the contract price close to the real (spot) price. That mechanism is the funding rate: a small payment exchanged between longs and shorts at regular intervals.

• When the contract trades above spot, longs pay shorts, encouraging traders to sell the contract.
• When it trades below spot, shorts pay longs.

Funding is a cost or a source of income depending on your side, and in crowded markets it can become significant. Any serious strategy accounts for it.

Margin, leverage and the mark price

To open a position you post collateral, called margin. Leverage is the ratio between the size of the position and that margin. At 10× leverage, a 1% move in price changes your margin by roughly 10%.

Exchanges value open positions using a mark price, a reference price designed to resist manipulation. If losses push your margin below the maintenance requirement at the mark price, the position is liquidated. Higher leverage means a smaller move against you is needed to trigger liquidation.

Cross and isolated margin

In cross margin, all the collateral in an account supports every position, so gains on one can cushion losses on another, but a single bad position can draw down the whole account. In isolated margin, each position has its own collateral and its maximum loss is capped at that amount. Each has a place, depending on how positions relate to each other.

Planting the hedgerows

Size positions before you pick leverage

Decide how much of the account you are willing to lose on a trade, then work backwards to the position size. Leverage is an outcome of that decision, not a starting point.

Spread exposure

Holding positions across several liquid markets, and using both longs and shorts, reduces dependence on any single asset or direction.

Use exits deliberately

Stop losses, take-profit levels and reduce-only orders turn a plan into rules that execute even when markets move overnight.

Watch the costs

Fees, funding and slippage compound over many trades. Resting limit orders, which typically pay lower maker fees, can make a meaningful difference over time.

Why systems help

The prairie never closes. Automated execution means risk rules are applied consistently at 3am on a Sunday exactly as they are on a Tuesday afternoon, without fatigue or emotion. It does not remove risk, but it removes a large source of avoidable mistakes.

Leveraged trading can result in losses greater than your initial deposit. Read our Risk Disclosures before trading.