Vanguard Total Bond Market ETF Tops iShares 3-7 Year Treasury Bond ETF on Yield and Cost. Does That make BND a Buy?

Vanguard Total Bond Market ETF (BND) offers a lower 0.03% expense ratio versus 0.15% for iShares 3-7 Year Treasury Bond ETF (IEI), plus a higher 3.94% trailing dividend yield versus 3.62%. BND also outperformed on 1-year total return at 4.22% versus 2.6%, though IEI had a smaller 5-year max drawdown of 13.9% compared with 17.9% for BND. The article frames BND as better for diversification and longer-term returns, while IEI is favored for lower volatility and Treasury-only exposure.

Analysis

The important read-through is not about which fund is “better,” but about how the market is being paid to own duration versus spread risk. IEI is effectively a pure rates bet, so it should outperform in a disinflation / growth scare where Treasury curves rally and credit spreads widen; BND, by owning corporate and mortgage risk, is the cleaner carry vehicle when the policy path is stable and economic data are benign. The current premium in BND’s recent return profile looks more like a carry and spread pick-up than a secular superiority signal.

The second-order effect is that BND is more vulnerable to a late-cycle risk-off event than the headline numbers imply. In a shallow recession or growth slowdown, the spread component can give back several years of excess income in a matter of weeks, while IEI should preserve more capital because its return driver is primarily rate duration rather than credit beta. That makes IEI the better hedge when equities are extended and credit is tight, even if its trailing yield looks inferior today.

The contrarian miss is that low expense ratio and higher trailing yield are not the real edge; the regime matters more than the optics. If the Fed pauses but long-end yields stay sticky, IEI can lag because intermediate Treasuries are still exposed to term-premium repricing, while BND benefits from coupon carry and some spread compression. But if growth cracks, the broader fund’s extra yield is likely to be a false comfort because it owns the instruments most likely to gap wider when liquidity disappears.

Key Decisions for Investors

• Use IEI as the defensive sleeve over the next 1-3 months if you expect equity volatility to rise; it should hold up better than BND in a credit-spread widening event, with lower drawdown risk despite lower carry.
• Prefer BND only in a base case of soft landing / stable growth over the next 6-12 months; the incremental yield can compound, but position sizing should be smaller because spread risk can erase carry quickly.
• Pair trade: long IEI / short BND as a low-conviction hedge against a mild growth scare or widening credit spreads over the next quarter; the trade pays if duration outperforms credit-beta exposure.
• If you want income with less rate risk than BND, avoid reaching for yield in credit here; instead use IEI and add risk separately via equities or selective IG credit when spreads are wider.
• For tactical hedging, buy 2-3 month put spreads on equity proxies and fund them with a modest BND overweight only if you believe the economy stays intact; otherwise keep the fixed-income book anchored in Treasuries.