Felix Prehn, the founder of Goat Academy, says the stock market looks strong on the surface but is unusually concentrated. Today, about 40% of the S&P 500 is held by just 10 companies. This means a typical S&P 500 fund is more dependent on a few giant stocks than most people think.
This is risky when “market breadth” is low. Market breadth means how many stocks are going up during a rally. High breadth is healthy because many stocks rise together. Low breadth is risky because only a few stocks lift the whole index. Recently, only a small share of stocks have hit new highs while the index hit records. If those few leaders drop, a broad S&P 500 fund can fall hard.
Prehn suggests a simpler, clearer way for beginners: use three ETFs with different roles—quality core, focused growth, and defensive stability—so the portfolio is easier to understand and manage.
ETF 1: OEF (S&P 100) — Quality Core
- What it is: OEF tracks the S&P 100, the largest and most established U.S. companies. These firms have strong balance sheets, steady cash flow, and durable competitive advantages.
- Why it helps: In tough times, investors often move to quality. Big, profitable companies tend to be more stable than smaller firms. OEF can reduce ups and downs compared to broader indexes that include hundreds of weaker names.
- Key details: Ticker OEF; expense ratio ~0.20%. The fee is higher than popular S&P 500 funds, but the holdings are a “quality filter” rather than a wider net.
Simple definition:
Expense ratio: the yearly fee charged by a fund. A 0.20% fee on $10,000 is about $20 per year.
ETF 2: VUG — Growth Engine
- What it is: VUG holds large-cap U.S. growth companies expected to grow earnings faster than the market. These firms often reinvest profits into innovation and expansion instead of paying big dividends.
- Why it helps: If you want long-term growth, you need exposure to companies driving innovation, including AI and related technologies. VUG tilts toward major growth leaders like Microsoft, Nvidia, and Alphabet.
- Trade-off: VUG can be more volatile. It may rise more in good times and fall more in bad times, so it should be a “growth sleeve,” not the whole portfolio.
- Key details: Ticker VUG; expense ratio ~0.04%; about 185 holdings; tracks the CRSP US Large Cap Growth Index.
Simple definitions:
Large-cap: very big companies by market value.
Volatility: how much prices move up and down.
Optional Tech Tilt: VGT — Pure Tech Focus
- What it is: VGT holds only information technology companies. It is a “pure play” on tech.
- Why it helps: If you believe tech will continue to lead, VGT adds focused exposure to leaders like Apple, Microsoft, Nvidia, Broadcom, and Oracle.
- Trade-off: Sector funds are more concentrated, which means higher risk if tech stumbles.
- Key details: Ticker VGT; expense ratio ~0.09%.
Simple definition:
Sector ETF: a fund that invests in one industry, like technology.
Why not a dividend-only strategy?
Dividend ETFs often lean into utilities, REITs, consumer staples, and some financials. These sectors can miss fast-growing winners that reinvest cash rather than pay high dividends. If interest rates fall, growth companies often benefit more because future profits become more valuable. Prehn argues investors should prioritize total return (price gains plus dividends) from strong, durable companies over dividend yield alone.
Simple definition:
Total return: price increase plus any dividends received.
A simple way to put it together
Prehn’s simple model for beginners:
- Core stability: OEF for quality and lower volatility.
- Growth: VUG for long-term upside from innovative leaders.
- Optional tech tilt: VGT if you want extra tech exposure.
One possible starting mix some investors study (not advice): a larger share in OEF for stability, a meaningful but smaller share in VUG for growth, and an optional slice in VGT if you want a pure tech layer. The exact percentages depend on age and risk tolerance. Younger investors can often handle more growth because they have more time to recover from downturns.
Key takeaways in plain language
- The S&P 500 is unusually concentrated in a few giant companies.
- Low market breadth means risk if leaders falter.
- OEF focuses on the strongest mega-cap companies for a sturdy core.
- VUG adds growth from established innovators.
- VGT is optional, giving a pure tech boost if desired.
- Simple beats complex. Fewer, clearer funds can reduce mistakes.
For more on Felix Prehn and his work, see the Goat Academy page: Felix Prehn Goat Academy.