Alpha Architect 1-3 Month Box ETF

BOXX
ETF Ticker

+3.01%

+4.06%

Cboe BZX

Alternative

United States

Money Market

ETF Strategy Fund Grade AAA

The Alpha Architect 1-3 Month Box ETF, BOXX_US, is an actively managed strategy providing exposure to United States, Money Market Alternative. It is listed on the Cboe BZX and has assets under management of $14,400.0m (as of Aug 31, 2026). The ETF trades in USD and was listed on the exchange on Dec 28, 2022. It has a net expense ratio of 19bps. (All data in USD as of Oct 9, 2026 unless stated.)

The investment process underpinning the actively managed Alpha Architect 1-3 Month Box ETF targets the price and yield behavior of the 1–3 month U.S. Treasury bill market by purchasing exchange-listed box spreads that synthesize short-term discount notes. The Fund typically maintains ≥80% of total assets in box spreads assembled from European-style options (generally on SPX or highly liquid ETF underlyings) sharing a common expiration, with the maturity value set by the strikes; effective duration is kept near the option tenor by concentrating expiries <90 days and rolling frequently. Cash/T-bills and money market instruments support margin and settlement, with OCC clearing mitigating counterparty risk. Sizing reflects screen depth, open interest, and transaction-cost budgets; capacity is managed by staggering expiries and avoiding crowded strikes. Rebalancing and sell/trim activity are systematic around expirations or if pricing deviates materially from theoretical box value, with turnover expected to be high to preserve the 1–3 month profile.

ETF Details

Key Facts

Issuer:
Alpha Architect ETFs
AUM:
$14,400.0m (as of Aug 31, 2026)
Net Expense Ratio:
19 bps
Inception Date:
Dec 28, 2022
Index:
Actively managed strategy
Dividend Frequency:
N/A

Trading

Ticker:
BOXX
Exchange:
Cboe BZX
ISIN:
US02072L5654
Trading Currency:
USD
Domicile:
United States

Classification & Risk

Asset Class:
Alternative
Asset Region:
United States
Theme:
Money Market
Economic Development:
Developed Markets
1 Year Volatility:
0.36%
3 Year Volatility:
0.36%
5 Year Volatility:
N/A

Performance

TTM Dividend Yield:
0.00% (verify with issuer)
1 Month Performance:
0.36%
3 Month Performance:
1.04%
6 Month Performance:
1.98%
1 Year Performance:
4.06%
3 Year Performance:
14.52%
5 Year Performance:
N/A
Investment Proposition

Alpha Architect 1-3 Month Box ETF (BOXX) offers short-duration, cash-like exposure by using exchange-listed option “box spread” positions to synthesize the economics of very short-term U.S. government obligations. The fund seeks steady, low-volatility total return linked to front-end rates while minimizing sensitivity to equity market moves; portfolio turnover can be high as positions roll frequently to maintain targeted maturities. Returns are primarily driven by prevailing short-term funding conditions and options market pricing, so outcomes may differ from traditional money market or T-bill vehicles and can be influenced by transaction costs and liquidity. The strategy is generally least sensitive to credit cycles but can be affected by abrupt changes in policy rates and options market capacity. Use cases include cash management/sweep, a tactical overlay for parking dry powder, or a transition exposure when moving between mandates. Suitable investors include taxable investors prioritizing after-tax total return on idle cash and allocators seeking an operationally efficient, rules-based cash sleeve. Key risk to monitor: implementation complexity—rolling and margin mechanics in options markets can introduce slippage and, at times, taxable distributions.

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