Launched by Vanguard in mid-2025, the Vanguard Total Treasury ETF (VTG) is a passive fund targeting intermediate U.S. Treasuries. It utilizes an ultra-low expense ratio of just 0.03% (3 bps) to undercut established competitors like iShares (at 15 bps) and capture massive institutional allocation flows. VTG tracks the Bloomberg U.S. Treasury Total Return Unhedged USD Index, positioning its duration profile (5.7 years) directly in the "belly" of the yield curve.