Dimensional Fund Advisors' $477B Q4 Portfolio: The Factor Investing Pioneer Holds 13,709 Stocks and Not a Single ETF

Dimensional Fund Advisors is the firm that turned academic finance into money management. Founded in 1981 by David Booth and Rex Sinquefield — both influenced by University of Chicago economists Eugene Fama and Kenneth French — DFA manages money based on a single premise: decades of academic research have identified specific factors (value, size, profitability) that systematically explain stock returns. Buy those factors, avoid everything else.

The Q4 2025 13F filing shows the result: $477 billion across 13,709 positions. Not a single ETF. Not a single index fund. Every position is an individual stock, selected and weighted by DFA's factor models. In an industry dominated by passive index tracking, DFA is the largest firm that does something fundamentally different.

13,709 Stocks: The Academic Portfolio Made Real

DFA's position count — 13,709 — is remarkable for its composition. Unlike BNY Mellon's 33,186 positions (which include ETFs, bonds, and sub-advised strategies), every single one of DFA's holdings is an individual equity. The firm holds more individual stocks than most of the S&P 500 index funds hold, because DFA's strategies extend deep into small-cap and micro-cap territory where index funds fear to tread.

This breadth is by design. Factor investing requires holding thousands of stocks to capture the statistical premiums that show up in research papers. You can't earn the "value premium" by buying 30 cheap stocks — you need hundreds, systematically weighted by price-to-book, profitability, and other characteristics. DFA's 13,709 positions represent one of the most rigorous implementations of this philosophy anywhere in the world.

The Top 10: It Looks Normal — Until You Look Closer

At first glance, DFA's top 10 looks like any mega-cap portfolio: NVIDIA ($17.5B), Apple ($15.7B), Microsoft ($12.8B), Amazon ($7.3B), Meta ($6.6B). But notice the order and the weights.

DFA's top-5 concentration is 17.9% — lower than BNY Mellon's 22.4% and Schwab's 19.4%, but higher than BofA's 12.9%. The weighting reflects DFA's factor tilts: mega-caps are included because they represent market weight, but they're not overweighted because large growth stocks typically score poorly on DFA's value and profitability factors.

The real DFA signature shows up below the top 5. JPMorgan at $5.9B (#7) is heavily overweight relative to its S&P 500 weight because it scores well on profitability factors. Eli Lilly at $4.1B (#9) benefits from high profitability margins. And Berkshire Hathaway (BRK/B) at $3.6B in the top 15 is a classic DFA holding — deeply profitable, no dividends, and cheap relative to intrinsic value.

The Value Signature: Exxon, J&J, Visa in the Top 15

Look at what else appears in DFA's top 15 that doesn't appear in pure index filings:

• Johnson & Johnson (JNJ) at $3.6B — a quintessential value stock with high margins and dividend stability
• Exxon Mobil at $3.2B — DFA's factor models love energy at current valuations (high profitability, low P/E)
• Visa (V) at $3.0B — high-profitability, capital-light payment network
• Mastercard (MA) at $2.4B — same thesis as Visa, both scoring high on profitability screens

Compare this to Wells Fargo's top 15 (dominated by ETFs) or Invesco's (dominated by tech and growth). DFA's portfolio has a distinct tilt toward profitable, capital-efficient businesses — exactly what the academic research predicts should outperform over long horizons.

No ETFs, No Bonds, No Derivatives

In an era when most large institutional filers hold significant ETF positions — BofA has $49B in Vanguard ETFs, Wells Fargo has $44B in SPY/IVV/QQQ — DFA holds exactly zero. This isn't an oversight. It's a philosophical commitment.

DFA believes that cap-weighted index funds have a structural flaw: they overweight expensive stocks (because cap-weighting gives the highest weight to the largest, often most expensive companies) and underweight cheap ones. DFA's own funds weight stocks differently — tilting toward value, small-cap, and profitable companies in proportions that cap-weighted indices don't.

The result is a 13F that reads like a stock-by-stock census of the American equity market, with every company sized by factor exposures rather than market capitalization.

The Missing Data: No Q3 Comparison Available

A limitation of our analysis: DFA's Q3 2025 holdings data was not available for quarter-over-quarter comparison. This means we can't calculate the precise share changes that we documented for other filers. However, the portfolio's composition alone tells the DFA story — this is factor investing at scale, unfiltered by ETF packaging.

How DFA Fits the Institutional Landscape

Among our Q4 research series, DFA occupies a unique philosophical position:

• Schwab IM: Index tracking — mirrors the market cap-weighted universe
• Wellington: Active stock picking — human judgment on individual stocks
• DFA: Systematic factor investing — academic models applied to all stocks
• BofA/Wells Fargo: Wealth management — ETF-centric model portfolios

DFA sits between pure indexing and pure active management. It doesn't pick individual stocks based on analyst opinions (like Wellington), but it also doesn't simply mirror the S&P 500 (like Schwab). It's a third way: rules-based, research-driven, and systematically tilted toward factors that academic finance says should earn excess returns.

What Investors Should Watch

• Profitability factor in action: JPMorgan, Visa, Mastercard, and Lilly all in the top 15 — DFA's profitability tilt is producing a portfolio that overweights cash-flow-generating businesses
• Energy overweight: Exxon at $3.2B reflects DFA's value tilt — energy stocks are cheap on traditional metrics
• Berkshire Hathaway at $3.6B: Like BNY Mellon, DFA holds meaningful Berkshire — both value-oriented philosophies see the conglomerate as underpriced
• 13,709 individual stocks: DFA likely holds securities that no other major filer owns — the long tail extends into micro-caps where factor premiums are theoretically strongest

DFA manages money the way finance professors think everyone should: systematically, diversified, factor-tilted, and with the patience to let academic research compound over decades. Its $477 billion 13F is what happens when you give Nobel Prize winners a real portfolio to manage.