The two words doing the heavy lifting: "safe" and "diversified"
Those are marketing words, not measurements. An S&P 500 fund like VOO holds roughly 500 companies, which sounds like the definition of spread-out. But the index is cap-weighted — the bigger a company gets, the more of your money it holds. That mechanism quietly concentrates you into whatever has already won.
Right now, what has already won is mega-cap tech. So the real question for anyone holding VOO isn't whether it's diversified across 500 names. It's how much of your money those 500 names actually spread around.
VOO trades at $701.83 with $1.04 trillion in assets and an expense ratio of 0.03% — the cheapest, most-defaulted-into fund in America. That scale is exactly why the concentration underneath it matters.
The X-ray: eight stocks, one bet
Call them the Big Tech 8: NVDA, MSFT, AAPL, AMZN, META, Alphabet (GOOGL + GOOG), AVGO, and TSLA. Here is how much of several funds most readers already own sits in just those eight names, using the most recent published fund holdings from spring–summer 2026. Providers report holdings on different lags, so treat these as point-in-time; VTI's disclosed holdings are the oldest of the group.
Performance and yield figures are historical and may change. Total return includes price movement and distributions where available. Past performance does not guarantee future results. Yield is not the same as total return.
| Fund | Weight in the Big Tech 8 | What it tracks |
| QQQ | 40.3% | Nasdaq-100 |
| VOO / SPY / IVV | ~36% | S&P 500 (same index, same weight) |
| VTI | ~33% | Total U.S. market |
| JEPQ | 33.7% | Nasdaq covered-call income |
| VIG | ~13% | Dividend growth |
| JEPI | ~12% | S&P covered-call income |
| VYM | 8.5% | High dividend yield |
| DGRO | 8.0% | Dividend growth |
| SCHD | 0.0% | Dividend quality + yield |
VOO, SPY, and IVV all track the identical S&P 500, so they carry the identical ~36% — they are the same bet in three wrappers. The eye-catcher is the bottom row. SCHD holds none of the eight. Not a reduced position — zero.
You can see the concentration inside VOO's own top holdings: NVDA alone is 7.6%, AAPL 7.0%, MSFT 5.4%, AMZN 4.1%, Alphabet's two share classes 5.9% combined, AVGO 2.9%, META 1.9%, TSLA 1.4%. Those top names stack to roughly 36% before you reach the 490-odd companies underneath. Technology is 37.4% of the fund by sector.
What the one-year chart says — and how it complicates the story
The total-return chart above tracks VOO against these peers over the trailing twelve months. The line that finishes highest is not VOO or QQQ. It's SCHD — the fund that owns 0% of the Big Tech 8.
Over the last year, SCHD returned roughly +30%, ahead of QQQ's ~24% and VOO's ~21%. It did that with a smaller worst-case dip along the way — a max drawdown of about -4.6% versus VOO's ~-8.9% — and a higher Sharpe ratio (~2.9 vs ~1.7), meaning more return per unit of volatility. The zero-concentration fund had the smoothest ride and the best finish this window.
That complicates any clean "concentration is dangerous" narrative. For much of the last few years, the concentration paid handsomely. This year it went the other way. Same holdings, opposite outcome — which is the whole point.
