Pirical Rankings

The best (and worst) performing law firms across different jurisdictions and growth metrics.


Powered by publicly-available data tracked by Pirical Legal Professionals

A line graph showing the performance of different brands over time. Some brands increase in value (green line), and some decrease (red line).

Data featured in

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Table showing Partner attrition rates for the AM Law 100
21 January 2026
Across the AM Law 100, Partner attrition rose by +2% in 2025
16 June 2025
Partner retention is a vital metric for law firms so we've decided to take a look at how lateral Partner retention compares across the AM Law 100 and uncover the firms with the strongest retention rates over the last 5 years, as well as any key trends among the hires that ultimately don't work out. Using publicly-available data tracked by Pirical Legal Professionals (PLP) , we've analysed how many of the lateral Partner hires made by AM Law 100 firms between 2020-2024 are still at the firm. Note on methodology: excludes firms that made fewer than 10 lateral Partner hires and moves as a result of mergers. Data is derived from tracked lateral Partner moves, numbers may be slightly incomplete due to limited public information. Exits include Partners that left but didn't lateral to another firm, eg. retired.