Maven Securities Interview Questions & Answers

Suggested approach: Explain liquidity provision and the feedback loop of trading decisions; connect to rapid learning, probabilistic thinking and teamwork.

Suggested approach: Quotes bid and ask prices, provides liquidity and manages inventory and Greeks while competing for order flow.

Suggested approach: Trading emphasises live decisions and risk; research emphasises models, data and systematic improvement. Show your fit.

Suggested approach: Structure around available evidence, probability, downside, action and updating after new information.

Suggested approach: Take ownership, quantify the impact, explain risk containment and what changed in your process.

Suggested approach: Avoid chasing losses; review your estimates, sizing, spreads and opponents' behaviour.

Suggested approach: Discuss its trading, quant research and technology pathways and training, without claiming a guaranteed placement.

Suggested approach: Lead with intuition, then a simple numerical example, then limitations.

Suggested approach: 37×(20+4)=740+148=888.

Suggested approach: 349×(6×4) or 349×(20+4)=6,980+1,396=8,376.

Suggested approach: 10%=24; 5%=12; 2%=4.8; total 40.8.

Suggested approach: Approximately 5.88%; use 1/16=6.25% as a nearby anchor.

Suggested approach: 125×(50−2)=6,250−250=6,000.

Suggested approach: 0.15×0.15=0.0225, or 2.25%.

Suggested approach: Differences are 4,6,8,10; next difference 12, giving 42.

Suggested approach: Double and add one; next is 63.

Suggested approach: Approximately 1.344; for a quick approximation use compounding or ln(1.03)≈0.0296.

Suggested approach: 12/80=15%.

Suggested approach: 35, because 35²=1,225.

Suggested approach: P(not)/P(event)=0.6/0.4=3:2.

Suggested approach: Six of 36 equally likely outcomes: 1/6.

Suggested approach: 1−(5/6)^4≈51.8%.

Suggested approach: 2 tosses, by geometric distribution with p=0.5.

Suggested approach: C(3,2)/8=3/8.

Suggested approach: (1+2+3+4+5+6)/6=3.5.

Suggested approach: p(1−p)=0.21.

Suggested approach: (4/52)×(3/51)=1/221.

Suggested approach: 0.009/(0.009+0.0495)≈15.38%; apply Bayes' rule.

Suggested approach: 11!/(4!×4!×2!)=34,650.

Suggested approach: 13; add variances when covariance is zero.

Suggested approach: 161/36≈4.472; use P(max=k)=(k²−(k−1)²)/36.

Suggested approach: 0.5×3−0.5×2=£0.50 per play.

Suggested approach: Bid is buying quote, ask selling quote; spread compensates for risk, costs and adverse selection.

Suggested approach: Start around fair value, e.g. 99–101, then adapt to volatility, inventory and information risk.

Suggested approach: Greater price uncertainty and adverse selection risk; trade-off with execution probability.

Suggested approach: If long, skew quotes to encourage selling inventory and discourage buying more, subject to risk limits.

Suggested approach: Approximate option price sensitivity to a small change in underlying price.

Suggested approach: Rate of change of delta as underlying price changes.

Suggested approach: Sensitivity of an option's value to a one-percentage-point change in implied volatility, under a stated convention.

Suggested approach: Option value sensitivity to passage of time, all else equal.

Suggested approach: Reduce directional exposure while recognising gamma, volatility, jumps and hedging costs remain.

Suggested approach: Implied is extracted from option prices; realised is calculated from historical returns.

Suggested approach: All else equal, a standard vanilla call generally becomes more valuable.

Suggested approach: More-informed counterparties disproportionately trade when your quote is stale or mispriced.

Suggested approach: Specify hypothesis, avoid leakage, use out-of-sample data, transaction costs and robustness tests.

Suggested approach: A model learns noise rather than generalisable structure; use validation and simplicity.

Suggested approach: Correlation measures association, while causal inference needs additional assumptions or experimental design.

Suggested approach: Audit source, missingness patterns and timestamps; avoid blindly forward-filling.

Suggested approach: Using information not available at decision time; enforce point-in-time features.

Suggested approach: Check venue, timestamps, crossed quotes, spread, trade size and neighbouring observations.

Suggested approach: O(log n) time on sorted random-access data.

Suggested approach: Use a fixed-size queue and running sum for O(1) updates.

Suggested approach: Stale quotes raise adverse selection and execution risk; correctness and stability remain essential.

Suggested approach: Track prediction drift, realised P&L, fill rates, latency, errors, exposure and kill switches.

Suggested approach: Define assumptions, estimate volume, choose uncertainty bounds and a bid–ask spread; update after trades.

Suggested approach: Reassess fair value and information, reduce size or skew quotes, respect limits.

Suggested approach: 0.4×8−0.6×4=+£0.80.

Suggested approach: No; consider variance, drawdowns, bankroll, correlations, liquidity and limits.

Suggested approach: Depends on utility, capital constraints and portfolio diversification; EV alone is insufficient.

Suggested approach: Fermi decomposition: population, households, piano ownership, service frequency and annual capacity.

Suggested approach: f*=2p−1=10% of bankroll under idealised independent repeated bets.

Suggested approach: Increase fair-value estimate, adjust quotes and inventory, check adverse-selection risk.