DFAU vs RULE

DFAUADimensional US Core Equity Market ETF

RULEFAdaptive Core ETF

In short

DFAU Active management priced like an index fund. Dimensional spreads across roughly 2,400 US stocks, then tilts the weights toward value, profitability and momentum instead of simply mirroring the Russell 3000.

RULE RULE is the algorithm with an exit button: a price-trend model ranks a go-anywhere lineup and can shift the whole portfolio to cash when signals break. The ticker is the pitch; 1.84%, with no fee waiver, is the toll.

Stated mandate

DFAU Seeks long-term capital appreciation. It uses an integrated research, portfolio-design, management, and trading process to build a broadly diversified portfolio of U.S. companies while balancing long-term return drivers, risk, shorter-term considerations, and trading costs.

RULE The fund seeks long-term growth of capital while also pursuing income.

Why people hold it

• DFAU Charges 0.12% a year, well under the 0.65% median for active US equity funds and the cheapest of the top-graded names in its group (AVLC, DFAC, FELC).
• Holds roughly 2,400 US companies, so no single name steers the fund. Whole-market coverage, not a concentrated bet.
• Active without the stock-picking drama: it leans weights toward value, profitability and momentum, using the Russell 3000 as its reference point rather than a rigid rulebook.
• A multi-billion-dollar fund that trades actively, and one of the strongest overall implementations in its active US equity peer group.

• RULE Its price-trend model scores assets and can move the entire portfolio into cash or money-market ETFs when signals turn down, a sell discipline most all-equity peers skip.sec.gov
• Go-anywhere by charter: stocks of any size, plus equity and fixed-income ETFs, so one ticker covers ground that usually takes several.sec.gov
• Concentrated rather than sprawling, at roughly 40 positions, so each pick carries real weight.
• Benchmarks itself to the S&P 500 Total Return Index, a yardstick you already know.

Worth knowing

• DFAU Those tilts cut both ways: results can drift from a plain Russell 3000 fund for long stretches, in either direction.
• No published index behind it. The trade-off for flexibility is that you're buying Dimensional's process, not a public set of rules you can check line by line.
• Distributions land quarterly, not monthly, and the mandate is long-term capital appreciation rather than income.

• RULE Costs 1.84%, with no fee waiver in place and above the category median; two of the category's standouts run far cheaper, DFAU at 0.12% and AVLC at 0.15%.
• Frequent trading is built into the strategy, which the prospectus flags for higher transaction costs and bigger tax bills in a taxable account.sec.gov
• A small fund that trades lightly, so spreads can run wider than at the category's giants.

Full DFAU profile⁠

Full RULE profile⁠