Core Insights - Market concentration in the U.S. has reached unprecedented levels, with the three largest stocks accounting for over 20% of the S&P 500's total value, and the top 20 stocks representing approximately half of the index [3][5] Group 1: Fund Overview - The iShares Top 20 U.S. Stocks ETF (TOPT) tracks the S&P 500 Top 20 Select Index, focusing on the 20 largest U.S. companies by market capitalization, with a quarterly rebalancing strategy [4][9] - TOPT's top three holdings—NVIDIA, Apple, and Microsoft—constitute 42% of the portfolio, emphasizing a concentrated growth exposure strategy [5][9] - The fund has a competitive expense ratio of 0.20% and has attracted $441 million in assets under management since its launch in October 2024 [6] Group 2: Performance and Appeal - Since its inception in late October 2024, TOPT has delivered a return of approximately 24%, indicating strong performance despite launching near market highs [7] - The fund's strategy appeals to investors seeking slightly more diversification than the Magnificent Seven while maintaining significant exposure to mega-cap growth stocks [8]