Mather Group 13F: Exits BOXX Stake

Mather Group completely exited its investment in Alpha Architect 1-3 Month Box ETF (BOXX) on Cboe US, according to a Form 13F filing with the SEC on October 14, 2026. Institutional investors use 13F filings to report their stock and exchange-traded fund holdings at the end of each quarter, giving the public a look at their past portfolio moves.

What Changed in Mather Group's Alpha Architect 1-3 Month Box ETF Position

Mather Group sold out of its entire stake in the fund, cutting its holdings by 50,392 shares. The firm went from holding 50,392 shares down to zero, representing a 100.0% reduction. Because 13F filings look backward at holdings from the end of the reporting quarter, the filing may not reflect the investor's current holdings today.

Alpha Architect 1-3 Month Box ETF Stock Holds Steady

The fund recently traded around $118.63 as of October 16, 2026. The stock trades above its 50-day moving average of $118.16 and sits comfortably above its 200-day moving average of $116.83. It is sitting near its 52-week high of $118.66, well above the 52-week low of $114.05.

About Alpha Architect 1-3 Month Box ETF

Alpha Architect 1-3 Month Box ETF is an exchange-traded fund that focuses on short-term option strategies. Under normal market conditions, the fund invests the vast majority of its assets in box spreads with weighted average maturities of less than 90 days. This strategy is designed to capture specific yield profiles using exchange-listed options.

Bottom Line

Mather Group's complete exit from the fund removes a chunk of institutional exposure, though future 13F filings will show whether the firm returns to the asset. Keep in mind that 13F filings are backward-looking and may not reflect current positions.