Dimensional US Core Equity Market ETF (DFAU)

The Dimensional US Core Equity Market ETF (ticker DFAU) holds American stocks across all sizes, from large mega-caps down to smaller mid-caps. It is built on a simple principle: American companies with strong profitability and reasonable valuations are a better bet than the entire unfiltered universe.

What DFAU is

Think of DFAU as an American stock fund for someone who wants real breadth, not a bet on size or style. It holds around 800 to 1,200 companies. That is a lot. Big banks, regional banks, oil giants, regional manufacturers, coffee makers, hospital networks, pharmaceutical companies, software firms, retailers — all of them are eligible. The screen is just two things: Is the company profitable? Does it trade for a reasonable price?

This is not a large-cap fund. It is not a small-cap fund. It is not a growth fund and not a value fund in the traditional sense. It is a “we want American companies that make money and do not cost too much” fund. The simplicity is the point.

The holdings and the tilt

DFAU’s portfolio naturally tips toward large-cap stocks because there are more large companies than small ones, and larger companies are usually more profitable (they have more scale, more pricing power, more resources). But the fund does not lock onto cap-weighting. Instead, it holds whichever companies, big or small, are profitable and cheap. This means mid-caps and smaller large-caps often show up when they are genuinely good values.

Sectors rotate in and out depending on valuations. Energy companies tend to be cheap. Technology is often expensive. Healthcare splits — some health-care sectors are cheap, others dear. Financials are often both cheap and profitable, so they show up more often. But there is no “tech fund” bias or “energy fund” stance. DFAU just owns what works.

The fund holds around 1,000 stocks in most conditions. That is enough diversity that you are not riding on any single name. The biggest position is typically under 2%.

Rebalancing keeps things honest

Four times a year, DFAU steps back and asks: Do these companies still meet the screens? If a stock has gotten expensive, it gets sold. If a new name has become cheap and profitable, it gets added. This quarterly discipline is the entire system. There is no manager hunch, no “I like this CEO,” no narrative spin. Just prices and profits.

Turnover is moderate. Since profitability does not change fast — most profitable companies stay profitable year to year — the portfolio does not churn as much as you might think. Valuations move faster, so some turnover happens when prices drift. But it is not a high-turnover fund.

Costs and trading

DFAU trades on the NYSE. You can buy and sell it like any stock. Bid-ask spreads are tight because it is a popular fund. Expense ratio is competitive — an actively managed US stock fund, but kept lean because the process is systematic, not dependent on high-paid stock-pickers.

Why the profitability screen matters

Here is the thing: most actively managed US stock funds do not have any systematic filter for whether companies actually make money. They just pick stocks. DFAU’s filter is blunt, but brutally effective. If a company is not profitable on multiple metrics (earnings, operating cash flow, return on assets), it does not get in. This cuts out a lot of zombie companies — the zombie retail, the zombie restaurants, the loss-making social-media startups, the unprofitable everything.

Over time, avoiding the worst loss-makers is worth far more than you might think. You miss some home-runs, sure — an unprofitable company can become wildly profitable and make you rich. But you also avoid a lot of wreckage.

What you are actually signing up for

If you own DFAU, you own American capitalism. You own banks and drugmakers, retailers and manufacturers, energy and software. You own a chunk of most sectors. You are making a bet that American companies remain profitable and reasonably valued. You are not making a bet on size (large-cap beats small-cap, or vice versa). You are not making a bet on style (growth beats value, or vice versa). You are making a simple bet: American companies that make money and are not overpriced will do okay.

This is not sexy. There is no “why the future is X” narrative. There is just screening and holding.

Risks

Downturns hurt DFAU like they hurt any stock fund. If the US economy enters a serious recession, profits fall, and stock prices fall, and the value of DFAU falls. The profitability screen might mitigate the damage (unprofitable companies might die outright), but it does not prevent it.

The profitability screen can be backward-looking. A profitable company today might be facing disruption, losing its moat, or facing new competition. A company might have managed earnings to look good this year but be heading for trouble. The screen helps, but does not eliminate the risk of picking losers.

Valuations can stay stretched. Just because something is profitable does not mean it is cheap. DFAU screens for profitability and valuation, but valuations are relative. If the whole market gets pricey, DFAU gets pricey too. The fund might own cheaper stocks than the S&P 500, but that does not mean it is cheap in absolute terms.

Sector concentration. Whatever sectors are profitable and cheap will make up a big piece of DFAU. If financials are cheap and profitable, the fund gets heavy in banks. If that sector crashes, the fund crashes. Diversification within the fund is good, but it cannot protect you from sector rotation.

How to evaluate DFAU

Look at what it actually holds. Pull the top 20 positions, look them up, and see if they are companies you recognize and believe in. They probably are — Apple, Berkshire, Microsoft, JPMorgan, Visa, and others usually show up in top positions.

Compare DFAU to a simple S&P 500 index fund. What is the real difference in holdings? DFAU is probably cheaper (lower valuations), more profitable, and a bit smaller on average. Are those differences worth the higher expense ratio? That is your call, but at least you can see the trade-off clearly.

Track DFAU’s valuations relative to the US stock market. If DFAU is trading for 30% less than the S&P 500 on a price-to-earnings basis, the fund is either cheaper or it is a value trap. Over time, that gap tightens or widens based on whether the profitability and valuation screens are working.

For anyone wanting US stock exposure without the complexity of picking a size or style, DFAU offers a straightforward alternative to market-cap weighting.