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What collateral concentration means for a futures account
Collateral concentration has two related dimensions: how much of your support for open positions depends on a particular collateral asset, and how much risk is tied to positions that may lose value together. A sharp fall in an altcoin can reduce a position’s value; a fall in a collateral asset can also reduce the margin value supporting several positions. If positions share a cross-margin pool, losses in one can use funds that otherwise support the others.
Grouping correlated altcoin positions is a practical stress-testing choice, not a claim that all altcoins move alike. It helps identify when a single broad market shock could pressure several positions at once.
How to assess the account before changing positions
1. Map every position and its collateral
Record each open contract, whether it is long or short, its notional value, collateral currency and margin mode. Mark which positions draw on the same wallet or account balance. If collateral is shared, use account-level totals rather than treating each position as an independent risk.
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2. Check effective leverage and usable equity
A useful conceptual check is combined position value divided by current usable account equity. Treat that as a portfolio-level estimate, not a substitute for the exchange’s own metric: venues can define and calculate leverage differently. Include unrealized profit or loss in your review, because losses can reduce equity and increase effective leverage even if you have not added to a position.
Kraken’s Portfolio Management guidance describes effective leverage in relation to positions and portfolio value, and notes that it changes with prices and unrealized profit or loss. When positions share a wallet, an individual position’s leverage display does not show the full account-level exposure.
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3. Value collateral at its margin value
Do not assume a token’s displayed market value is the amount the exchange will count toward margin. Confirm whether each asset is eligible and check its current haircut, discount rate or collateral ratio in the account’s rules. The usable value can be lower than its spot value, and the schedule can vary by venue or account.
The exchange documentation illustrates why these rules need to be checked separately: OKX describes discount rates that convert crypto equity to a USD-equivalent value; Kraken says non-USD assets in its Multi-Collateral Derivatives product have haircuts; Binance describes asset collateral ratios and price indices in its margin calculations. These are product-specific descriptions, not one shared collateral formula.
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4. Check size tiers and portfolio stress rules
Review the maintenance-margin requirement for each contract and how it changes as position size changes. Kraken says its schedule increases required maintenance margin as position size rises. In OKX portfolio margin, positions are grouped by underlying risk unit and tested against market scenarios, including extreme moves, basis risk and stablecoin depeg risk; the product also applies a minimum charge intended to cover liquidation fees, transaction costs and slippage.
Do not count on one altcoin position hedging another unless the exchange’s own risk model recognizes that offset. A hedge that looks balanced by notional may not offset the relevant stress risk or margin requirement.
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Cross margin, isolated margin and portfolio margin
Cross margin pools support—and shares losses
In cross margin, collateral in the relevant shared wallet or account may support multiple positions. That can provide a broader pool of funds, but it also means a loss in one position can consume collateral supporting others. Confirm exactly which positions and balances are in the pool; the scope is defined by the venue and account setup.
Isolated margin limits the assigned collateral
Kraken describes isolated margin as confining the collateral at risk to that position under its documented mode. Isolation does not remove the market risk of the position, and the exact mechanics depend on the platform. Check whether the setting applies per position or account-wide and what funds remain outside the isolated allocation.
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Portfolio margin uses a portfolio risk model
Portfolio margin may evaluate grouped exposures under prescribed stress scenarios rather than simply applying a separate position-level calculation to each contract. As OKX’s documentation shows, its described mode considers risk units and stress scenarios and includes a minimum charge. The scope of offsets, scenarios and charges is product-specific; do not assume another exchange uses the same model.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What exchange documentation establishes—and what it does not
| Documentation | What it describes | What not to infer |
|---|---|---|
| OKX, Portfolio margin mode: cross-margin trading (Risk Unit Merge), updated August 5, 2026 | Risk-unit grouping, stress testing, minimum charges and a maintenance-margin-ratio trigger for the described portfolio-margin mode. | That another OKX mode or a different venue uses the same trigger, scenarios or liquidation sequence. |
| Kraken, Portfolio Management | Effective leverage, shared versus isolated margin concepts, and the effect of changing portfolio value or removing funds from a trading wallet. | A universal leverage threshold or a maintenance schedule for every Kraken contract. |
| Kraken, Multi-collateral Derivatives contracts for EEA clients | Haircuts on non-USD collateral and product-specific USD conversion and conversion-fee details in certain settlement situations. | That the same collateral terms apply outside the stated EEA product or across all Kraken accounts. |
| Binance, Binance Margin Level and Risk Control, updated September 28, 2026 | Asset collateral ratios, price indices and cross-margin risk controls for the Binance margin products covered by that document. | That these margin thresholds are altcoin futures thresholds. The document’s examples are for Binance Cross Margin Classic, not futures. |
For scope, Binance’s cited Classic 3x documentation places the margin-call band above a margin level of 1.1 and at or below 1.3, with liquidation at or below 1.1. Its Classic 5x example gives a margin-call band above 1.1 and at or below 1.16, with liquidation at or below 1.1. These are product-specific cross-margin figures, not general recommendations or futures rules.
How to keep a margin buffer from shrinking unexpectedly
Recheck account headroom after any event that can change equity or usable collateral. That includes price moves in positions or collateral, realized or unrealized losses, funding, changes to collateral discounts, and withdrawals. Kraken warns that removing funds from a trading wallet while positions remain open raises effective leverage and may lead to liquidation. Its Multi-Collateral guidance also describes USD conversion and conversion fees in certain settlement situations.
- Keep an eye on the account’s maintenance requirement and the available margin above it; do not rely on a leverage setting alone.
- Check whether the collateral mix is concentrated in assets that could fall at the same time as the positions they support.
- Before withdrawing or converting collateral, review the account’s recalculated margin metrics with open positions included.
- After changing position size, confirm whether the position crossed into a higher maintenance-margin tier.
How to compare an exchange’s margin rules
Before using a venue or changing margin mode, read the rules for the exact contract and account. Compare the following items rather than relying on a platform’s headline leverage figure:
- Shared-collateral scope: Which positions, wallets and balances draw on the same pool?
- Collateral valuation: Which assets qualify, what haircut or discount applies, and can it change?
- Exposure model: Are requirements position-tiered, based on portfolio stress tests, or a combination?
- Liquidation trigger and sequence: Which account metric triggers action, and what positions or collateral can be affected?
- Operational costs: How are funding, conversion fees and P&L settlement currency handled?
- Risk separation: Is isolated margin available, and which funds remain outside the active trading wallet?
Exchange rules are product-specific and can change. Eligible collateral, haircuts, maintenance tiers, leverage limits, liquidation procedures and availability may also vary by jurisdiction or account tier. Use the live rules shown for your account and positions; the named documentation cannot establish the correct threshold for an account whose venue, region, mode and contract sizes are unknown.
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