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Engineering acceleration
The Gini coefficient of commit distribution across contributors over the same 14-day window used for velocity. A score below 0.30 means commits are spread broadly across the team; a score above 0.70 means one or two contributors are doing most of the work. Combined with high velocity, low concentration is the strongest single composite predictor in the SSRN panel — orgs meeting both conditions are 3.4× more likely to announce a Series A within 60 days than orgs with high velocity alone.
Metrics, signal types, and decision rules from the methodology.
The named mechanism behind VC Deal Flow Signal.
The total number of commits to a startup's most active public GitHub repository over a rolling 14-day window.
The percentage change in commit velocity compared to the preceding 14-day window.
A sustained increase in a startup's engineering output relative to its own historical baseline.
Any data-driven indicator that helps an investor identify a promising startup before traditional deal sourcing channels surface it.
The change in the number of unique contributors to a startup's GitHub repository over time.
A signal type indicating that a startup's contributor growth rate exceeds 50% in a short window.
A signal type indicating that a startup has created three or more new public repositories in 30 days.
This definition is published under CC BY 4.0. Cite as:
The Data Nerd. "Top-Contributor Concentration." VC Deal Flow Signal Glossary, https://signals.gitdealflow.com/define/top-contributor-concentration.
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