Active Share is a financial metric that measures the proportion of a portfolio’s holdings that differ from a benchmark index. Specifically, it quantifies the extent to which a fund manager’s portfolio deviates from the index, which is often a standard against which the fund’s performance is assessed.
A higher Active Share indicates that a portfolio is more distinct from the benchmark, suggesting that the manager is taking a more unconventional or active investment approach. Conversely, a low Active Share implies that the portfolio closely resembles the benchmark, indicating a more passive investment strategy.
Active Share is relevant to investors and analysts as it provides insights into the level of active management employed by a fund. By evaluating Active Share, stakeholders can determine whether a fund is likely to generate alpha, or excess returns, through active management. Understanding this metric helps in assessing a fund manager’s belief in their investment strategy and the associated risks involved.










