{"slug":"s-p-500-vs-total-stock-market","question":"S&P 500 vs Total Stock Market","answer":"The S&P 500 tracks 500 large-cap U.S. companies and represents ~92% of total U.S. market capitalization, while Total Stock Market includes all 3,500+ publicly traded U.S. companies including mid-cap and small-cap stocks. The S&P 500 is more concentrated but historically performs similarly to the broader market with lower volatility.","answer_curated":true,"verdict":"Choose the S&P 500 if you prefer simplicity, proven large-cap stability, and historical outperformance with lower volatility—it captures the market's dominant companies. Choose Total Stock Market if you want true diversification across all company sizes, exposure to emerging mid-cap and small-cap growth opportunities, and a fully representative U.S. equity portfolio. Both have near-identical expense ratios (0.03%) and are excellent for long-term buy-and-hold investors.","keyDifferences":[{"label":"Number of Holdings","winner":"b","entityAValue":"500 companies","entityBValue":"3,500+ companies"},{"label":"Market Cap Coverage","winner":"b","entityAValue":"~92% of U.S. market value","entityBValue":"100% of U.S. market value"},{"label":"10-Year Average Annual Return (2014-2024)","winner":"a","entityAValue":"13.3%","entityBValue":"12.9%"},{"label":"Standard Deviation (Volatility)","winner":"a","entityAValue":"16.2%","entityBValue":"16.8%"},{"label":"Minimum Company Market Cap","winner":"b","entityAValue":"$~12.5 billion","entityBValue":"$~300 million"}],"winner":{"slug":"total-stock-market-u-s","name":"Total Stock Market (U.S.)"},"confidence":"high","entities":[{"name":"S&P 500","slug":"s-p-500","url":"https://www.aversusb.net/entity/s-p-500","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/s-p-500"},{"name":"Total Stock Market (U.S.)","slug":"total-stock-market-u-s","url":"https://www.aversusb.net/entity/total-stock-market-u-s","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/total-stock-market-u-s"}],"faqs":[{"question":"Has the S&P 500 historically outperformed Total Stock Market?","answer":"Yes, marginally. Over the past 10 years (2014-2024), the S&P 500 returned 13.3% annualized versus 12.9% for Total Stock Market—a 0.4% annual advantage. This is primarily because the S&P 500's large-cap concentration benefited from the mega-cap tech boom (Apple, Microsoft, Nvidia). However, this outperformance is not guaranteed in future periods; small-cap stocks underperformed significantly from 2020-2024."},{"question":"Should I own both S&P 500 and Total Stock Market?","answer":"No. Owning both creates redundancy since the S&P 500 represents 92% of Total Stock Market by value. If you own Total Stock Market, you already have S&P 500 exposure. Combining them wastes expense ratio dollars (though minimal at 0.03%) and complicates rebalancing. Choose one based on your preference for size diversification."},{"question":"Why did Total Stock Market underperform 2014-2024 despite having more holdings?","answer":"Small-cap and mid-cap stocks significantly underperformed large-cap stocks during this period. The largest 500 companies in the S&P 500 were dominated by tech mega-caps (Apple, Microsoft, Nvidia, Tesla, Google) that drove exceptional returns. Total Stock Market's 20% allocation to smaller companies dragged overall returns. This is cyclical—small-caps outperformed in 2003-2006 and may again in the future."}],"attribution":{"source":"A Versus B","url":"https://www.aversusb.net/compare/s-p-500-vs-total-stock-market","license":"CC BY 4.0","citationFormat":"According to A Versus B (https://www.aversusb.net/compare/s-p-500-vs-total-stock-market), The S&P 500 tracks 500 large-cap U.S. companies and represents ~92% of total U.S. market capitalization, while Total Stock Market includes all 3,500+ publicly traded U.S. companies including mid-cap a","dateModified":"2026-07-07T06:01:03.409Z"},"relatedQuestionsUrl":"https://www.aversusb.net/api/faq/s-p-500-vs-total-stock-market","relatedComparisonsUrl":"https://www.aversusb.net/api/v1/related/s-p-500-vs-total-stock-market","knowledgeGraphUrl":"https://www.aversusb.net/api/knowledge-graph/s-p-500-vs-total-stock-market","claimReviewSchema":{"@context":"https://schema.org","@type":"ClaimReview","@id":"https://www.aversusb.net/compare/s-p-500-vs-total-stock-market#claimreview","url":"https://www.aversusb.net/compare/s-p-500-vs-total-stock-market","inLanguage":"en-US","isAccessibleForFree":true,"conditionsOfAccess":"Free","claimReviewed":"S&P 500 vs Total Stock Market","reviewBody":"The S&P 500 tracks 500 large-cap U.S. companies and represents ~92% of total U.S. market capitalization, while Total Stock Market includes all 3,500+ publicly traded U.S. companies including mid-cap and small-cap stocks. The S&P 500 is more concentrated but historically performs similarly to the broader market with lower volatility.","datePublished":"2026-03-31T21:48:32.364Z","dateModified":"2026-07-07T06:01:03.409Z","reviewRating":{"@type":"Rating","ratingValue":5,"worstRating":1,"bestRating":5,"alternateName":"High Confidence"},"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B","url":"https://www.aversusb.net"},"itemReviewed":{"@type":"WebPage","@id":"https://www.aversusb.net/compare/s-p-500-vs-total-stock-market","url":"https://www.aversusb.net/compare/s-p-500-vs-total-stock-market","name":"S&P 500 vs Total Stock Market","inLanguage":"en-US"}}}