US Fixed Income Allocation Model
AGG core (70%) with a rate-vote and relative-momentum overlay rotating across HYG, TLT, and BIL. 18-year backtest, Sharpe lift +0.12 over a B1 fixed-mix benchmark.
~18–24% of the portfolio per year (60–80% on the 30% overlay; the 70% core never trades).
Estimated tax drag, assuming the top US federal marginal rate: ~20–35 bps/yr on a whole-portfolio basis — a conservative upper bound; less at lower rates. Registered / tax-deferred accounts (RRSP, TFSA, IRA, foundation) see none. See Limitations for the full breakdown.