Institutional Activity Surges in PXF Holdings Jones Financial Companies Lllp increased its stake in Invesco FTSE RAFI Developed Markets ex-U.S. ETF (NYSEARCA:PXF) by 42.8% in Q4, now holding 4,984 shares valued at $239,000. Other institutions, including Charles Schwab, also displayed notable activity, highlighting growing interest in this ETF.2