Societe Generale Interview 2027: 'What Happens to Option Price When Vol Rises?'

Both call and put prices increase when volatility rises — this is positive vega. Intuition: higher volatility widens the distribution of future prices, and since the option holder keeps the upside while walking away from the downside, a wider distribution is worth more. This "option price volatility increases interview" question is commonly reported by candidates in Societe Generale interviews.

Option Price Volatility Increases Interview: What This Question Assesses

The question tests whether you understand options as volatility instruments rather than just directional bets. The interviewer wants the asymmetric-payoff intuition: why does more uncertainty help the holder? A candidate who says "calls go up, puts go down" reveals they are thinking directionally — the classic fail.

Option Price Volatility Increases Interview: How to Answer

• State the answer immediately. Both calls and puts increase in value — vega is positive for long options.
• Give the intuition. An option is the right without the obligation: bigger swings mean bigger potential gains, while losses stay capped at the premium. More volatility = more valuable asymmetry.
• Add the nuance. Vega is largest for at-the-money options with longer maturities; deep in- or out-of-the-money options are less sensitive.
• Mention the second-order effect if asked. Rising vol often coincides with falling spot (leverage effect), which can offset call gains — but the pure vega effect is positive.

Sample line: "Both go up — higher vol widens the outcome distribution, and since I keep the upside but can walk away from the downside, that wider distribution is worth more to me."

Common Mistakes

• Saying puts fall when vol rises — confusing volatility effects with directional effects.
• No intuition — stating "vega is positive" without explaining why is memorization, not understanding.
• Forgetting the holder vs. writer distinction — the answer describes long options; short options lose value when vol rises.

If the intuition did not come naturally, revisit payoff diagrams until the asymmetry is obvious. Details may vary by role and region; check Societe Generale's official careers page.

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FAQ

What happens to option prices when volatility increases? Both call and put prices rise — long options have positive vega.

Why does higher volatility increase option value? Because the holder captures the upside of bigger swings while the downside stays capped at the premium; a wider distribution makes that asymmetry more valuable.

Which options are most sensitive to volatility? At-the-money options with longer times to expiry typically have the highest vega.

Is this a real Societe Generale interview question? Options and volatility questions are commonly reported by candidates in Societe Generale interviews, though exact phrasings may vary by role and region.

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