BIL ETF: facts, role and comparison notes

A close cash-management peer to SGOV; fee, spread and brokerage mechanics can decide the choice.

State StreetTreasury billsReviewed 2026-08-25
Stated expense ratio
0.14%About $14.00 per $10,000 each year, before compounding.
Atlas research role

Short-term cash reserve

structural risk level 1 of 5

Fund structure

FundSPDR Bloomberg 1-3 Month T-Bill ETF
IssuerState Street
Benchmark or mandateBloomberg 1-3 Month U.S. Treasury Bill Index
Portfolio breadthU.S. Treasury bills with one to three months remaining maturity
Legal structureOpen-end bond ETF
Distribution scheduleMonthly
Inception2007-05-25

What the label does not answer

A close cash-management peer to SGOV; fee, spread and brokerage mechanics can decide the choice. Before using the fund, verify the latest fee, benchmark description, holdings, spread and tax details at the sponsor. A category label alone does not show concentration or overlap with an existing portfolio.

Use it as

Short-term cash reserve.

Verify before acting

Current holdings, index changes, premium or discount, trading spread and account-specific tax treatment.

detailed comparisons

Primary source

Open the current State Street fund page

Atlas structural data reviewed 2026-08-25. Dynamic market values are intentionally excluded when a dated current source is not available.

What to establish before using BIL

Research BIL through objective, issuer, category, cost questions, holdings, and risk checklist. A sound review separates the fund's legal objective from the role an investor hopes it will play. For BIL, start with maturity range, effective duration and the way the portfolio responds to a change in yields and confirm the details in documents dated for the current decision.

Exposure and benchmark

Write the benchmark or mandate in full. Check eligibility, weighting, concentration limits and rebalance timing. Compare those rules with the current holdings instead of relying on a category label. If the fund uses sampling, options, swaps or futures, identify how that implementation changes the exposure.

Cost and trading

Translate the expense ratio into annual dollars for the proposed amount. Then examine the current spread, premium-discount history, share price, trading depth and any brokerage or tax friction. The expense ratio is deducted inside the fund and is not the complete cost of entering, holding and exiting a position.

Portfolio fit and overlap

List the positions or exposures already owned that overlap with BIL. Estimate the combined weight of the largest companies, sectors, countries, maturities or strategy drivers. State whether the fund is intended as a core position, a diversifier, an income sleeve, a hedge or a tactical allocation. That label sets the standard for position size and monitoring.

Adverse-case review

A rate move can produce a price change even when credit risk is low. Before buying, compare a parallel yield shift with a curve-steepening or curve-flattening scenario. Translate the fund-level loss into a portfolio-level loss using the proposed position weight. Include an execution assumption that is less favorable than the last displayed price.

Documents to check

Use TreasuryDirect descriptions, the fund prospectus, holdings and duration statistics. The summary prospectus usually explains the objective, fees and principal risks; the full prospectus and statement of additional information provide more detail; shareholder reports and holdings files show implementation. Record the date because holdings and market characteristics change.

Ongoing monitoring

Review BIL after a material fee, benchmark, index-methodology, distribution or strategy change. A large premium or discount, unusual spread, closure notice or persistent tracking gap also deserves attention. Price performance alone cannot show whether the original reason for owning the fund remains valid.