Equity Derivatives Interview Practice
This conversation was generated using Cook'd AI's career assistant and reviewed by Fallon Han from our editorial team for accuracy.
I want to practice derivative-product questions for an equity derivatives sales interview. I'm a third-year undergrad in the US on F-1 status, and I want a realistic mock session with a detailed evaluation report at the end. Please test me on options payoffs, hedging, and client use cases.
Absolutely. I'll run this like a real product-knowledge round for an equity derivatives sales seat. I will ask concise interview-style questions, then give you a detailed report on clarity, technical accuracy, commercial thinking, and communication.
First question: A client buys a call option on a stock with a strike of 100 and a premium of 5. Explain the payoff at expiration for the buyer and the seller, and when the trade breaks even.
For the buyer, the payoff at expiration is max(stock price minus 100, 0), and after paying the 5 premium, the profit is max(S - 100, 0) - 5. So the break-even is 105. For the seller, the payoff is the negative of the buyer's payoff, and after collecting the premium the seller keeps the 5 unless the stock finishes above 100.
Good start. Your break-even is correct, and you identified the asymmetric payoff well. A stronger answer would say the seller's expiration P and L is premium received minus intrinsic value, so the seller can lose more than 5 if the stock rallies.
Second question: A portfolio manager is long a large book of U.S. equities and is worried about a short-term drawdown. What option strategy could they use to reduce downside, and what tradeoff are they making?
They could buy puts, or use a collar by buying puts and selling calls to help finance the hedge. The tradeoff is they reduce downside risk, but they give up some upside if they sell calls, or they pay premium if they just buy puts.
That is the right framework. In a sales discussion, I would want you to be more specific: a protective put gives the cleanest downside protection, while a collar is more cost efficient but caps upside.
Third question: A hedge fund client says they expect a stock to stay range-bound over the next month and wants to monetize that view with options. What structures might they consider, and what risks should you flag?
They might sell a straddle or strangle if they expect low realized volatility. The risk is that if the stock moves sharply, losses can be large because short options have convex downside. They would also need to manage margin and assignment risk.
Strong answer. You correctly linked the view to short-vol structures and mentioned margin and assignment, which matters in a client conversation. One refinement: mention that a short straddle has more premium and more risk than a strangle, since the strikes are at-the-money.
Final question: Walk me through how you would explain delta hedging to a client who is not a quant, and tell me one practical limitation of delta hedging in live markets.
I would say delta hedging is adjusting stock exposure so the option position is less sensitive to small moves in the underlying. If a dealer is long options, they may short stock to offset positive delta, and then rebalance as delta changes. A practical limitation is that hedging is discrete, so the book can still lose money from gamma, gaps, transaction costs, and changing volatility.
Good explanation. You made it client-friendly and included the real-world limitations. Here is your evaluation report:
Technical accuracy: 8.5 out of 10. Your payoff, break-even, hedging, and short-vol answers were correct. Add sharper detail on seller P and L and the difference between protection and financing in collars.
Commercial thinking: 8 out of 10. You connected structures to client intent, which is exactly what equity derivatives sales looks for. To improve, mention when each structure is preferable for a specific mandate, such as downside protection versus cost control versus yield enhancement.
Communication: 8.5 out of 10. Your answers were clear and concise. In an actual interview, use one sentence to define the structure, one sentence for the payoff, and one sentence for the client tradeoff.
Interview readiness: Strong. You sound interview-ready on core options concepts, but I would push you harder on spread structures, Greeks, and how to pitch options to different client types.
Best improvements before the real interview: 1. Practice explaining call, put, collar, straddle, and spread payoffs without hesitation. 2. Memorize the risk language for short options and hedges. 3. Tie every answer to a client objective such as downside protection, income, or tactical view.