WACSX — Western Asset Core Bond Fund
Data updated: 2026-08-26
WACSX — Western Asset Core Bond Fund. Long Total / Aggregate Bond · $1.67B AUM · 0.42% expense ratio. Holdings, fees, performance and SEC filings.
WACSX Fund Overview
WACSX — Western Asset Core Bond Fund is a US mutual fund managed by Western Asset Funds 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: Western Asset Funds INC
- Category: Long Total / Aggregate Bond
- Assets under management: $1.67B
- 1-year return: 4.1%
- Ticker: WACSX
- SEC CIK: 0000863520
- SEC series ID: S000000713
- Share class ID: C000066988
WACSX Holdings
Top 10 holdings of Western Asset Core Bond Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| United States Of America - Bureau Of The Public Debt | 6.61% |
| United States Of America - Bureau Of The Public Debt | 4.21% |
| United States Of America - Bureau Of The Public Debt | 1.95% |
| Federal National Mortgage Association | 0.92% |
| Government National Mortgage Association | 0.85% |
| Legg Mason Partners Institutional Trust | 0.84% |
| Tsmc Arizona Corp. | 0.82% |
| United States Of America - Bureau Of The Public Debt | 0.74% |
| Government National Mortgage Association Remic Trust | 0.68% |
| Government National Mortgage Association | 0.67% |
WACSX Portfolio Allocation
Asset-class allocation of Western Asset Core Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Securitized | 50.8% |
| Fixed Income | 50.3% |
| Cash & Equivalents | 0.8% |
| Real Estate | 0.3% |
| Derivatives | 0.1% |
WACSX Performance
Total returns for WACSX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.6% |
| 1 year | 4.1% |
| 3 years (annualised) | 4.2% |
| 5 years (annualised) | -0.7% |
WACSX Risk Information
Risk metrics for WACSX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.2%
WACSX Costs and Fees
WACSX costs about $42 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.42%
- Gross expense ratio: 0.44%
- Portfolio turnover: 93%
- Brokerage commissions: 0.73 bps of average net assets (SEC N-CEN)
WACSX Cashflows
Over the 12 months to 2026-06, Western Asset Core Bond Fund had net outflows of $569.10M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$25.70M |
| 2026-05 | −$36.64M |
| 2026-04 | −$27.79M |
| 2026-03 | −$27.87M |
| 2026-02 | −$29.71M |
| 2026-01 | −$25.07M |
WACSX Debt Constituents
Largest debt holdings of Western Asset Core Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Of America - Bureau Of The Public Debt | 6.61% |
| United States Of America - Bureau Of The Public Debt | 4.21% |
| United States Of America - Bureau Of The Public Debt | 1.95% |
| Tsmc Arizona Corp. | 0.82% |
| United States Of America - Bureau Of The Public Debt | 0.74% |
| Tsmc Arizona Corp. | 0.42% |
| Wells Fargo & Company | 0.37% |
| Bank Of America Corp. | 0.33% |
| Jp Morgan Chase & Company | 0.33% |
| Firstenergy Corp. | 0.31% |
WACSX Prospectus and SEC Filings
Official Western Asset Core Bond Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-04-24
- Prospectus (485BPOS) — filed 2025-04-24
- Prospectus (485BPOS) — filed 2024-04-24
- Portfolio holdings (N-PORT) — filed 2026-08-26
- Portfolio holdings (N-PORT) — filed 2026-05-28
- Portfolio holdings (N-PORT) — filed 2026-02-23
- Annual census (N-CEN) — filed 2026-03-11
- Annual census (N-CEN) — filed 2025-03-13
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.