RSP slightly underperformed SPY over 23 years
The Invesco S&P 500 Equal Weight ETF (RSP) gives every S&P 500 stock the same allocation, reducing technology exposure.
Over the past 23 years, SPY slightly outperformed RSP while also delivering lower volatility and better risk-adjusted returns.
RSP requires continual rebalancing and charges a higher expense ratio, making it difficult to justify unless reducing concentration risk is the primary objective.