Active Share vs Tracking Error

Does more active management lead to higher outperformance?

Nicolas Rabener
10 min read
1 Sep 2025

SUMMARY

  • Active funds need to become active to justify their fees
  • There is no relationship between being more active & outperformance
  • Regardless if measured via active share or tracking error

INTRODUCTION

Fund managers are paid to outperform, which means they must differ from their benchmarks. For years, many could stay close to benchmarks, hugging them closely, but the rise of ETFs and improved analytics has made that approach harder. To justify meaningful fees, managers now need to be truly active.

Greater activity, however, is a double-edged sword: it increases the potential for both strong outperformance and significant underperformance. The most common ways to measure this activity are active share and tracking error.

This article explores how these two metrics influence fund managers’ ability to outperform.

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