A crypto position can lose value through price movement, financing, fees, slippage or custody failure. The SEC’s retail custody bulletin outlines decisions investors face when holding assets directly or through a third party. The September Fed rate decision is relevant to financing conditions, but it is not a return forecast.

What the evidence shows

The entry quote is only one component of a trade. Real costs include exchange fees, spread, slippage and possibly funding. A self-custody user also has key-management responsibilities; a platform user depends on that platform’s solvency and rules. The SEC custody bulletin is a useful starting point for those choices.

Sizing should start with the maximum acceptable loss and an invalidation level, then consider liquidity at the exit. If the asset can gap past a stop, the realized loss may exceed the plan. Concentrated holdings and correlated tokens can make a portfolio less diversified than it looks.

Why it matters

Before an order, calculate the capital at risk, expected execution cost and exit liquidity. For leveraged products, a small move in the underlying can have an outsized effect on equity, especially if maintenance margin changes or the market gaps.

Deeper context and limits

A position budget should be expressed in money at risk, not simply the fraction of the account placed into a token. If a trader risks 1% of capital but a stop can slip materially, the nominal calculation can understate loss. The correct estimate includes spread, fees and a stress case for poor liquidity. Highly correlated holdings can compound that risk across the portfolio.

Custody is a separate choice. A hardware wallet can reduce some online attack exposure but increases responsibility for backups and transaction verification. A custodial account can simplify access while introducing platform risk and withdrawal terms. Neither structure removes market volatility. Revisit both the trade thesis and the asset-holding arrangement before size grows.

Bull, bear and neutral cases

Confirmation and invalidation

Compare actual fills and ongoing thesis evidence with the plan. Invalidate the trade when its predefined condition fails, not when the loss feels uncomfortable.

Write down the thesis and invalidation, verify platform terms and custody, then compare actual fill price with the plan. Do not treat an educational example or an AI-generated scenario as personalized advice.

Reader checklist

• Calculate total transaction and financing costs.
• Check custody and withdrawal terms.
• Set position size from the loss budget.

Published 26 September 2026. Dated report, not a live price feed or personal investment advice. Source documents may be revised after publication.