Advanced Lesson Pack

Situation: You build your portfolio from only the ten stocks with the highest individual return over the last few years.

Correct answer: What makes a portfolio good is how its pieces work together. The best individual pieces alone aren't enough. Why: What matters is the return achieved per unit of risk taken, not the best individual return.

Situation: You assume that two assets that moved in opposite directions in the past will always keep doing so.

Correct answer: Correlation is unfortunately not stable and can change significantly over time. Why: Correlation measures how closely two assets move together, and it is the key figure for diversification. Just not a stable one.

Situation: After a strong rally in one position, you think rebalancing should now add even more to that position.

Correct answer: Rebalancing tends to sell what has risen and buy what has fallen, to restore the original allocation. Why: It serves risk control, not return-boosting. The original weighting gets deliberately restored.

Situation: An investor says high volatility automatically means high downside risk, because it only measures downward moves.

Correct answer: Volatility treats upward and downward moves the same, which is exactly its weakness as a risk measure. Why: It measures the overall spread of returns and is therefore a useful but incomplete risk measure.

Situation: You sell an option and assume you are not taking on any extra risk by doing so.

Correct answer: Selling an option means taking on an obligation. Unlike the buyer, who only pays a premium. Why: An option is the right to buy or sell something at a set price. The buyer pays a premium for that right, the seller carries the obligation.

Situation: You want to hedge a position with an option without knowing what it costs.

Correct answer: Hedging is like insurance with a premium and only pays off if you know that cost. Why: It lowers expected return in exchange for limiting losses, whether that trade-off is worth it depends on knowing the cost.

Situation: You compare a future to an option and assume only one side carries an obligation in both cases.

Correct answer: Unlike an option, a future carries an obligation on both sides. Why: A future is a binding agreement to buy or sell at a later date: binding for both parties.

Situation: You assume that with a short sale, your maximum loss is limited the same way it is with a normal stock purchase.

Correct answer: With a short sale, the potential gain is limited, but the potential loss is not. Why: You borrow securities, sell them, and buy them back later, if the price rises without limit, the loss grows without limit too.

Situation: You wonder why your actual execution price differs from the price that was displayed before you traded.

Correct answer: Market microstructure explains exactly that. How individual orders turn into a price, and why the display and the fill can differ. Why: It describes how the order book and supply/demand produce the actual traded price.

Situation: You have a rough idea in your head of when you want to buy and sell, but have not written any of it down.

Correct answer: A strategy only becomes one once a stranger could execute it without asking questions. A rough idea is not enough. Why: Anything less is a collection of intentions, not an executable strategy.

Situation: A backtest shows impressive historical results, and you automatically assume the strategy is reliable.

Correct answer: The test is only as good as the care taken to rule out typical sources of error. Why: Backtesting applies rules to past data. Without carefully ruling out error sources, impressive results are worth little.

Situation: You test hundreds of variations of a strategy on the same historical data and find one that performs exceptionally well.

Correct answer: The more variants tested, the more likely you find one that only looks great in hindsight by chance. Why: Search long enough and any dataset yields patterns that are pure chance.

Situation: You automate a strategy that has not yet been proven viable, hoping automation itself will fix that.

Correct answer: Automation removes emotional mistakes, but does not solve the problem of having a viable strategy in the first place. Why: It replaces emotional mistakes with technical ones and helps with discipline, but it is no substitute for a tested strategy.

Situation: A DeFi platform advertises very high yields without explaining where they come from.

Correct answer: Where the yield source cannot be named, the payouts often come from later participants' money. Why: Advertised yields ideally come from nameable sources. Where they do not, caution is warranted.

Situation: You provide liquidity for a trading pair and assume that once the prices converge again, any divergence loss disappears on its own.

Correct answer: The loss compared to simply holding grows with the price divergence and is not inherently temporary. Why: Anyone providing liquidity ends up holding less of whatever went up. Despite the name, the loss is not guaranteed to be temporary.

Situation: You have worked through the entire course but have not yet written your own plan.

Correct answer: The real conclusion is a document. Your own plan for what you do, what you avoid, and what you hold onto during bad periods. Why: Only the written document turns what you learned into something that actually holds up in difficult moments.