Russell Reconstitution, which occurs each year in June, is a top-to-bottom recalibration of the US equity market benchmarks and the membership of the entire Russell series of indexes. Reconstitution ensures that the indexes continue to accurately reflect the current state of equity markets and their market capitalization segments (large cap, mid cap, small cap, micro cap), industry breakdowns and style structure.
This highly anticipated event is closely tracked by professional money managers as they rebalance their portfolios with the goal of minimizing unwanted benchmark risk. Other close observers include brokerage houses, who, in the weeks leading up to Reconstitution, prepare for large blocks of trades by researching and reporting on the shifts that may occur, managing their inventory accordingly.
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