What is Window Dressing?
Window dressing occurs when fund managers sell poorly performing holdings and buy recent winners just before quarter-end or year-end reporting dates. Since reports show holdings at a point in time, the portfolio appears to have owned the best-performing stocks all along. The embarrassing losers disappear from the record, replaced by names investors recognize as winners.
The Cost to Investors
Window dressing harms investors in multiple ways. Unnecessary trading generates transaction costs borne by the fund. Reports misrepresent the actual investment strategy, making it impossible to evaluate the manager's true approach. Buying high-priced winners and selling beaten-down losers at quarter-end is the opposite of sound investing and can drag on performance.
How to Detect It
High portfolio turnover rates may indicate window dressing among other excessive trading. Compare quarter-end holdings with the fund's stated strategy and actual returns. If a fund underperformed but its holdings list reads like a who's who of market winners, window dressing is likely. The most reliable defense is choosing index funds, which have no incentive to window dress because they simply hold the index constituents.