The Three Funds in Plain English
VOO (Vanguard S&P 500 ETF) owns the 500 large U.S. companies in the S&P 500, weighted by size. QQQM (Invesco NASDAQ 100 ETF) owns the 100 largest non-financial companies on the Nasdaq. It tracks the same index as QQQ but charges a lower fee. VGT (Vanguard Information Technology ETF) owns only the U.S. technology sector.
Over the past several years, the largest technology companies have driven much of the U.S. market's gains, helped by heavy spending on AI and data centers. A common lineup, often held in a Roth IRA, uses three funds: VOO for the broad market, QQQM for growth and VGT for tech. Three tickers looks like three separate bets.
An equal-weight mix of the three puts 42.0% of the portfolio in the same eight stocks. VOO alone puts 36.2% there. How diversified you are depends on what the funds hold, not on how many tickers you own. In this case, adding QQQM and VGT to VOO makes the portfolio more concentrated, not less.
This concentrated mix has also been the winning bet for the past decade. In a hypothetical 10-year look-back, it returned +566% versus +317% for VOO alone. We're not saying these funds are bad. The point is that a portfolio holding all three is making one concentrated bet rather than three separate ones.
Prices, yields and returns are as of the September 30, 2026 close. Holdings are from each fund's most recently reported list. 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 | What It Holds | Expense Ratio | AUM | Trailing Yield | Morningstar Category |
| VOO | S&P 500, weighted by size | 0.03% | $1,041.3B | 1.06% | Large Blend |
| QQQM | Nasdaq-100 (non-financials) | 0.15% | $110.0B | 0.43% | Large Growth |
| VGT | U.S. information technology sector | 0.09% | $155.5B | 0.38% | Technology |
Expense ratios and yields are current trailing figures and can change.
What You Own Underneath: The Big 8
By "big 8" we mean the seven mega-caps often called the Magnificent Seven (Apple, Microsoft, Nvidia, Alphabet, Amazon, Meta and Tesla) plus Broadcom. Alphabet's two share classes (GOOGL and GOOG) are combined.
To make the tradeoffs easier to see, the examples below use a hypothetical portfolio. These are not suggested allocations. They are simplified illustrations of how different mixes could change income profile, growth exposure, and concentration risk.
Both examples split the money one-third each, and neither is rebalanced. The Hypothetical tech-tilted example holds VOO, QQQM and VGT. The Hypothetical spread-tilted example holds VOO, VXUS (Vanguard Total International) and SCHD (Schwab U.S. Dividend Equity).
| Stock | VOO | QQQM | VGT | Hypothetical tech-tilted example |
| Nvidia | 8.1% | 8.4% | 17.7% | 11.4% |
| Apple | 7.0% | 7.5% | 15.8% | 10.1% |
| Microsoft | 5.7% | 5.8% | 11.5% | 7.7% |
| Alphabet (both classes) | 5.4% | 6.0% | Not held | 3.8% |
| Amazon | 3.8% | 4.0% | Not held | 2.6% |
| Broadcom | 2.7% | 2.5% | 4.5% | 3.2% |
| Meta | 1.9% | 3.2% | Not held | 1.7% |
| Tesla | 1.6% | 2.9% | Not held | 1.5% |
| Big 8 total | 36.2% | 40.2% | 49.6% | 42.0% |
VGT holds no Alphabet, Amazon, Meta or Tesla, and that's a classification issue, not a stock-picking choice. Under standard sector definitions, Alphabet and Meta count as communication services, while Amazon and Tesla count as consumer discretionary. Since VGT holds only tech, it doubles up on the three largest tech names instead. In the tech-tilted mix, Nvidia, Apple and Microsoft together make up about 29%.
Two notes on these numbers. First, the 42.0% describes a fresh one-third split bought today. The never-rebalanced backtest below would have drifted toward VGT over ten years, so its big-8 share today would be higher than 42%. Second, the list leaves out Micron, which has grown to 5.0% of QQQM, about 4.2% of VGT and 1.6% of VOO. Counting it would push the overlap higher, not lower.
VOO is already tilted toward tech before you add anything. Technology is 38.7% of the fund, followed by financial services at 12.0% and communication services at 9.5%. QQQM is 59.9% technology and VGT is 99.3%.
