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SIG / Susquehanna Interview Questions

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Style mock based on candidate reports — not official questions; formats change.

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Problems
20
Topics
6
Hard
4

Susquehanna (SIG) is known for poker- and game-theory-flavoured interviews built around expected value, probability and decision-making under uncertainty. Below are 20 quant interview questions of the kind asked at SIG / Susquehanna, spanning Probability, Stochastic Processes, Calculus & Linear Algebra, Algorithms & Numerical, Options & Greeks, Market Making & Games. Each comes with a full worked solution — sign in to check your answers and track your progress.

Probability 4Stochastic Processes 3Options & Greeks 3Market Making & Games 8

Preparing for SIG / Susquehanna? Read the guide: SIG (Susquehanna) Interview Questions: Poker, Probability and Decision Making

30
Top Two Aces
ProbabilitySIG / SusquehannaOptiver
63%Medium35
Expected Min of Two Dice
ProbabilityOptiverSIG / Susquehanna
71%Medium39
At Least One Six
ProbabilitySIG / SusquehannaOptiver
60%Easy41
The Tuesday Boy
ProbabilityJane StreetSIG / Susquehanna
44%Hard47
Gambler’s Ruin
Stochastic ProcessesJane StreetSIG / Susquehanna
72%Medium51
Expected Flips for HTH
Stochastic ProcessesJane StreetSIG / Susquehanna
45%Hard59
How Long Until Ruin or Riches
Stochastic ProcessesOptiverSIG / Susquehanna
57%Medium67
Maximize x^(1/x)
Calculus & Linear AlgebraJane StreetSIG / Susquehanna
51%Hard97
Nim GameLeetCode
Algorithms & NumericalJane StreetSIG / Susquehanna
Easy125
Sign of Theta
Options & GreeksOptiverSIG / Susquehanna
71%Medium129
Delta of an ATM Straddle
Options & GreeksOptiverIMC TradingSIG / Susquehanna
73%Medium135
Straddle Breakeven
Options & GreeksSIG / SusquehannaAkuna Capital
74%Easy137
Make a Market on Two Dice
Market Making & GamesOptiverSIG / Susquehanna
87%Easy139
Roll, Keep or Re-roll
Market Making & GamesJane StreetSIG / Susquehanna
45%Medium141
Two Bookmakers, One Arbitrage
Market Making & GamesSIG / SusquehannaFlow Traders
55%Medium142
The Bookmaker’s Edge
Market Making & GamesSIG / SusquehannaDRW
54%Medium144
Quoting Against Informed Flow
Market Making & GamesCitadel SecuritiesSIG / Susquehanna
46%Hard145
Kelly with 2-to-1 Odds
Market Making & GamesSIG / SusquehannaDRW
40%Medium153
The House Edge in European Roulette
Market Making & GamesSIG / SusquehannaFive Rings
52%Easy154
The Doubling “System”
Market Making & GamesSIG / SusquehannaFive Rings
59%Medium

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