Why 'Buy the Market' Advice Breaks Down for Bonds

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- Mark McCarron, chief investment officer at Wescott Financial Advisory Group, recommends the Bloomberg U.S. Aggregate Bond Index as a core bond holding for its diversified mix of Treasurys, investment-grade corporates, and securitized debt.
- The Bloomberg U.S. Aggregate Bond Index is currently 46% Treasurys, with Nick Lloyd of Novare Capital Management noting the index is increasingly weighted toward the 'lowest yielding fixed income instrument' — the risk-free rate.
- The Agg carries a duration of 5.7 years, meaning any fund tracking it would decline by 5.7% in response to a 1-percentage-point interest rate hike — a risk heightened by current rate expectations.
- CME's FedWatch tool shows traders pricing in an 87% probability that the Federal Reserve hikes rates by at least 0.25% by year-end as of Tuesday.
- Steve Laipply, global co-head of iShares Fixed Income ETFs, urges investors to evaluate any Agg purchase 'in the context of what an investor is trying to do,' warning against making it a sole bond holding.
- Investors seeking higher bond returns could consider funds with broader market exposure including lower-rated debt or heavier corporate weighting, per Lloyd.
Why it matters: With traders pricing an 87% chance of a Fed rate hike by year-end, the Agg's 5.7-year duration means investors who treat it as a passive 'buy the market' bond play could absorb meaningful losses — a risk amplified by the index's 46% concentration in low-yielding Treasurys that drags overall returns.

