Market Making Confidence Interval Interview
Market making confidence interval interview guide for using uncertainty intervals to justify quote width without overstating precision.
Candidates connecting statistics intuition to quoting.
Intervals can guide spread
An uncertainty interval can help justify why a quote is wide or tight. Wider uncertainty usually means wider protection around fair value.
Do not overstate the statistic
In toy interviews, the interval may be rough rather than a formal confidence interval. State whether it is heuristic or statistically derived.
Concrete example
If your estimate is 100 with a rough uncertainty band of plus or minus 20, quoting 99 at 101 probably understates uncertainty.
Separate center and width
The center of the interval informs fair value. The width informs spread and confidence.
Update when uncertainty changes
A new sample may move the center, narrow the interval, or both. Your quote should reflect the specific change.
Common mistakes
Candidates often use interval language as decoration. In a market-making answer, it should affect the quote.
Practice the pattern
Use the LeetQuidity curriculum and calibration to turn this topic into a focused practice plan.