Should you use derivatives at all? A decision framework and risk checklist

What you will learn

• A six-step framework to decide whether a derivative fits your purpose.
• How to translate product leverage into a position size based on planned risk.
• How to compare the cost of a hedge with simpler alternatives.
• A risk checklist with clear "no-go" signals.

Explanation

Derivatives are tools. They can reduce risk (hedging), increase exposure (speculation) or change the shape of a payoff. They can also lose money very quickly: leverage magnifies losses, gaps can jump over stops, and products can expire or be knocked out. The question is not "are derivatives good?" but "is this product the best tool for this specific purpose, at a size I can afford to lose?"

The six-step framework

1. Purpose: write one sentence. Hedge (which risk, how long?), speculation (which view, which time frame?) or payoff change (for example, income from a covered call). If you cannot write it, stop.
2. Simpler alternative: could you reach the goal without a derivative? Example: to reduce equity risk, you could also sell part of the position or hold more cash.
3. Understanding: can you state, on paper, the maximum loss, the break-even, all costs (spread, financing, time value) and what happens at expiry, close-out or knock-out? If not, do not trade it. Under EU rules (MiFID II, the Markets in Financial Instruments Directive), firms must check your knowledge and experience for complex products (appropriateness test); passing that test is not proof that the product is suitable for you.
4. Product and counterparty: choose between exchange-traded, OTC and issuer products (lesson 11). Prefer transparency and low cost; check regulator and protection scheme.
5. Size: risk only capital you can lose without affecting your living costs or emergency fund. Size by planned loss, then check the gap scenario.
6. Exit and review: define in advance when you close (stop, target, date) and review each trade in your journal.

Sizing with leveraged products

Position sizing by fixed percentage risk was taught in the course Risk Management. With leveraged products the key step is to convert the stop distance on the underlying into a loss on the product: product loss % ≈ underlying move % × leverage. Then: amount to invest = planned risk in € ÷ product loss %. Afterwards, check the gap case: what if the product loses 100%?

Worked example

Hypothetical example A (speculation): account €10,000, planned risk 1% per trade = €100. A knock-out certificate has leverage 10. Your stop on the underlying is 3% away. Spreads, financing and taxes are excluded.

1. Product loss at the stop: 3% × 10 = 30%.
2. Amount to invest: €100 ÷ 30% ≈ €333.
3. Exposure: €333 × 10 ≈ €3,330 of the underlying.
4. Gap check: if the underlying gaps through the barrier, the full €333 is lost, i.e. 3.3% of the account instead of the planned 1%. Decide in advance if you accept this.

Hypothetical example B (hedging): a €60,000 equity portfolio. A protective put on an index covering the full amount for three months costs 2% of the hedged value.

1. Cost per quarter: €60,000 × 2% = €1,200.
2. Cost if renewed four times a year: €1,200 × 4 = €4,800, i.e. 8% of the portfolio per year.
3. Comparison: if the real goal is lower long-term risk, reducing the equity share (asset allocation, see the course ETFs, Funds & Long-Term Investing) may be cheaper than permanent hedging. A short-term hedge can make sense for a specific, time-limited risk.

Risk checklist

Common mistake

Practice activity

Hypothetical: account €8,000, planned risk 1%. You consider an index CFD at 15,000 points, €1 per point per CFD, leverage limit 20:1, stop 150 points away. On paper: (a) calculate the position size in CFDs (round down to 0.1), (b) the margin required, (c) the loss if the index gaps 600 points against you, and (d) go through the risk checklist and name one question you would need to answer before trading.

Key takeaways

• Start with the purpose and a simpler alternative; use a derivative only if it is clearly the better tool.
• Never trade a product whose maximum loss, break-even and costs you cannot calculate.
• Size leveraged products by planned loss, then check the gap case where the product loses 100%.
• Permanent hedges can be expensive; compare them with changes in asset allocation.

Next step

Continue with the course "Personal Finance & Money Management" to make sure your budget, emergency fund and financial plan are solid before you risk any capital.