Position Sizing for Crypto Assets

Work backward from a tolerable loss

Position size can be framed by asking how much value would be lost under a specified adverse move. If a hypothetical position is worth 1,000 units of currency and falls 15 percent, the simple price loss is 150 units before fees, taxes, funding, or execution effects. The example illustrates arithmetic, not a recommended amount or a limit on possible declines.

Specify whether exposure is spot, perpetual, borrowed, or protocol-deposited; identify its collateral and settlement currency before sizing.

Use volatility as one input, not a promise

Volatility describes variation in a specified price series and window, not a ceiling or forecast. Results depend on venue, quote currency, data quality, and interval; compare size scenarios rather than assuming future moves repeat.

Daily observations can miss intraday gaps or venue interruptions. Compare multiple windows and an explicit shock, and separate the assumed price move from capital at risk.

Discount the size for the market you can reach

Market liquidity affects whether an order can be entered or closed near a displayed quote. Compare intended size with available depth on the actual venue and pair, and consider wider spreads or partial execution under stress. Reported volume is not a guarantee that the same amount can be traded at one price.

Venues, payment rails, and networks may be delayed or unavailable despite continuous trading. Do not assume stop orders, withdrawals, or collateral transfers will always work.

• Asset, quote pair, venue, and intended holding period
• Assumed adverse move and the resulting currency loss
• Spread, depth, and order size under ordinary and stressed conditions
• Fees, funding, borrowing terms, and collateral exposure where applicable
• Custody location and practical time needed to access or transfer assets

Model leverage and gaps explicitly

Leverage changes how price movements relate to posted collateral, while platform-specific margin rules can trigger reduction or liquidation. The exact threshold, mark-price method, fees, and execution conditions differ among providers and products. Do not infer a universal liquidation price from a simple leverage ratio.

A gap or rapid market move can leave execution materially different from a planned stop level. For derivatives, include the possibility of funding payments and settlement in the chosen currency; for borrowing, include repayment terms and collateral haircuts where relevant. These are separate mechanisms, not a single “risk multiplier.”

Recalculate when the exposure changes

Recalculate when asset, venue, collateral, or horizon changes. Compare planned size with actual fills, but do not treat past liquidity as a promise. Document unsupported assumptions rather than false precision. This is educational information, not individualized investment, tax, legal, or accounting advice.