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How to Pick ETFs When Fees, Index Rules and Tech Weightings Drive Returns

Updated fund data show cost, index methodology, large tech positions and chip-driven revenue growth are producing big differences in performance and diversification.

Overview

  • On Tuesday, August 18, updated fund rundowns showed Vanguard’s VUG carries about 69.2% of its assets in technology and has outperformed the S&P 500 on average since 2004.
  • Schwab’s SCHF is much cheaper than iShares’ IEMG with a 0.03% expense ratio versus 0.09%, and SCHF currently posts a higher trailing 12‑month payout that favors income seekers.
  • Index rules matter because providers disagree on country classifications; MSCI treats South Korea as emerging while FTSE calls it developed, which explains large performance and exposure gaps between EM ETFs.
  • Strong AI and semiconductor demand has driven rapid revenue growth at Nvidia, AMD and Broadcom, and those gains have amplified returns and volatility for tech‑heavy and some emerging‑market funds.
  • Investors should weigh expense ratio, holdings count, AUM, sector weightings and trailing yield when choosing a fund because cheap broad ETFs can still concentrate unwanted country or tech exposure and affect income and diversification.