Investing education
Portfolio construction
How many stocks to own, how much to put in each, and what the index is really holding.
EducationPortfolio construction
S&P 500 concentration risk: what index investors are actually holding
A market-cap S&P 500 fund is more concentrated than its 500-stock label implies. What long-term investors should check before treating it as diversified.
Sep 23, 2026 · 8 min read
EducationPortfolio construction
How many stocks should you hold to beat the market?
How many stocks should you hold to beat the market? The math says 15-25. Fewer and you take uncompensated risk. More and you become the index.
Mar 10, 2026 · 8 min read