Schwab US Aggregate Bond Index Fund
Figures last verified October 31, 2026
Tracks the Bloomberg US Aggregate Bond Index — broad investment-grade US bonds.
Same Agg, different sticker: SWAGX tracks the identical Bloomberg US Aggregate index as VBTLX and FXNAX, at 0.04% with no minimum. Thousands of Treasuries, agency mortgage bonds, and investment-grade corporates with intermediate duration — the textbook ballast allocation, indexed without commentary.
Bond index funds are even more commoditized than stock index funds, because bonds themselves are math: yield, duration, credit quality. There is no secret sauce to differentiate one Agg tracker from another beyond a basis point of fee and a rounding error of tracking. Hold the one your brokerage sells without a transaction fee, put it in a tax-advantaged account, and spend your remaining attention on the stock/bond split — the only bond decision that moves the needle.
The bond leg of a Schwab-based portfolio.
SWAGX alternatives & comparable funds
If you’re weighing SWAGX against the field, these are the funds most investors line it up against — same job, different provider, slightly different terms.
| Fund | Family | Expense Ratio | Minimum |
|---|---|---|---|
| SWAGX — Schwab US Aggregate Bond Index Fund | Schwab | 0.04% | $0 |
| VBTLX — Vanguard Total Bond Market… | Vanguard | 0.05% | $3,000 |
| FXNAX — Fidelity US Bond Index Fund | Fidelity | 0.025% | $0 |
| PTTRX — PIMCO Total Return Fund (Institutional) | PIMCO | 0.53% | $1M (instit.) |
Head-to-head comparisons
Frequently asked questions
What is the expense ratio of SWAGX?
SWAGX (Schwab US Aggregate Bond Index Fund) has an expense ratio of 0.04%, which works out to roughly $4 per year for every $10,000 invested. That is very low by industry standards, where the average fund still charges well over 0.40%.
What is the minimum investment for SWAGX?
SWAGX has no minimum initial investment — you can start with any amount.
What does SWAGX invest in?
Tracks the Bloomberg US Aggregate Bond Index — broad investment-grade US bonds. It falls in the bond category and is an index fund.
What are good alternatives to SWAGX?
The funds most often compared with SWAGX are VBTLX, FXNAX, PTTRX — broadly similar exposure from different providers, with small differences in fee, minimum, and portability that usually come down to which brokerage holds your account.
Expense ratio and minimum for SWAGX drawn from Schwab fund documentation; last verified October 31, 2026. Figures change — confirm against the official prospectus before investing. This review is editorial opinion, not investment advice.