iShares S&P 500 3% Capped ETF (TOPC) seeks to track the S&P 500 3% Capped Index, which measures the performance of the 500 largest U.S. companies but limits any single stock's weight to a maximum of 3%. This large-cap equity ETF provides diversified exposure to America's biggest corporations while reducing concentration risk from mega-cap technology stocks.
How It Works
TOPC uses a passively managed approach that mirrors the S&P 500 but applies a 3% cap to individual stock weights, redistributing excess weight proportionally among remaining holdings. When companies like Apple or Microsoft exceed 3% in the standard S&P 500, their weights are trimmed and reallocated. The fund rebalances quarterly to maintain these caps and follows index changes. This methodology creates a more equally distributed version of the S&P 500 with approximately 500 holdings.
Key Features
- Reduces mega-cap concentration risk by capping individual stocks at 3%, preventing technology giants from dominating portfolio performance
- Maintains S&P 500 exposure while creating more balanced sector allocation compared to market-cap weighted alternatives
- Recently launched with 0.00% expense ratio, though this promotional rate may increase after initial period
Risks
- This ETF can underperform the standard S&P 500 during periods when mega-cap stocks like Apple and Microsoft lead market gains
- Capping methodology may reduce returns during technology-driven bull markets where largest companies generate outsized performance
- As a new ETF with minimal assets, liquidity could be limited with wider bid-ask spreads during volatile market conditions
Who Should Own This
Best suited as a core holding (30-60% of equity allocation) for investors with 3+ year time horizons seeking S&P 500 exposure with reduced concentration risk. Medium risk tolerance required for equity volatility. Appeals to investors concerned about mega-cap dominance who want more balanced large-cap exposure while maintaining broad market participation.