TSBLX — T. Rowe Price U.S. Bond Enhanced Index Fund, Inc.
Data updated: 2026-06-25
TSBLX — T. Rowe Price U.S. Bond Enhanced Index Fund, Inc. data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Total / Aggregate Bond · $2.38B AUM · 0.12% expense ratio · 4.0% 1-yr return. From SEC regulatory filings.
TSBLX Fund Overview
TSBLX — T. Rowe Price U.S. Bond Enhanced Index Fund, Inc. is a US mutual fund managed by T. Rowe Price QM U.S. Bond Index Fund, Inc., categorised as Long Total / Aggregate Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: T. Rowe Price QM U.S. Bond Index Fund, Inc.
- Category: Long Total / Aggregate Bond
- Assets under management: $2.38B
- 1-year return: 4.0%
- Ticker: TSBLX
- SEC CIK: 0001120924
- SEC series ID: S000002166
- Share class ID: C000222343
TSBLX Holdings
Top 10 holdings of T. Rowe Price U.S. Bond Enhanced Index Fund, Inc. by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| T. Rowe Price Government Reserve Fund | 3.64% |
| US Treasury N/b | 2.45% |
| US Treasury N/b | 2.25% |
| US Treasury N/b | 1.24% |
| US Treasury N/b | 1.21% |
| US Treasury N/b | 1.16% |
| US Treasury N/b | 1.05% |
| US Treasury N/b | 0.97% |
| US Treasury N/b | 0.97% |
| US Treasury N/b | 0.90% |
TSBLX Portfolio Allocation
Asset-class allocation of T. Rowe Price U.S. Bond Enhanced Index Fund, Inc. by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 61.6% |
| Securitized | 37.2% |
| Cash & Equivalents | 4.0% |
| Derivatives | 0.1% |
TSBLX Performance
Total returns for TSBLX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.1% |
| 1 year | 4.0% |
| 3 years (annualised) | 3.5% |
| 5 years (annualised) | 0.1% |
TSBLX Risk Information
Risk metrics for TSBLX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.5%
TSBLX Costs and Fees
TSBLX costs about $12 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.12%
- Gross expense ratio: 0.13%
- Portfolio turnover: 67%
- Brokerage commissions: 0.06 bps of average net assets (SEC N-CEN)
TSBLX Cashflows
Over the 12 months to 2026-04, T. Rowe Price U.S. Bond Enhanced Index Fund, Inc. had net inflows of $621.04M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-04 | $33.89M |
| 2026-03 | $87.04M |
| 2026-02 | $55.20M |
| 2026-01 | $81.45M |
| 2025-12 | $95.07M |
| 2025-11 | $59.35M |
TSBLX Debt Constituents
Largest debt holdings of T. Rowe Price U.S. Bond Enhanced Index Fund, Inc. by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| US Treasury N/b | 2.45% |
| US Treasury N/b | 2.25% |
| US Treasury N/b | 1.24% |
| US Treasury N/b | 1.21% |
| US Treasury N/b | 1.16% |
| US Treasury N/b | 1.05% |
| US Treasury N/b | 0.97% |
| US Treasury N/b | 0.97% |
| US Treasury N/b | 0.90% |
| US Treasury N/b | 0.83% |
TSBLX Prospectus and SEC Filings
Official T. Rowe Price U.S. Bond Enhanced Index Fund, Inc. filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Total / Aggregate Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.