WACSX Performance — Western Asset Core Bond Fund, Class IS
Data updated: 2026-08-26
WACSX returned +0.65% year to date and +4.14% over one year to Jun 2026. Annualised returns are +4.21% over 3 years and −0.75% over 5 years. Against its Intermediate Core Bond category average the fund came out behind over three years but ahead over one: $100 invested three years ago grew to $113, against $115 for the category, and to $104 over one year, against $104. Volatility over the past three years was 6.51% a year. In the 12 months to Jun 2026 the fund lost a net $569.1M, and assets reached $1.67B.
WACSX Growth of $100
What $100 invested in Western Asset Core Bond Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Intermediate Core Bond category average over the same months.
| Period | WACSX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $104 | $104 |
| 3 years (Jul 2023 – Jun 2026) | $113 | $115 |
| 5 years (Jul 2021 – Jun 2026) | $96 | $102 |
| Since data start (Jul 2019 – Jun 2026) | $106 | $112 |
WACSX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +0.65% |
| 1 year | +4.14% |
| 3 years (annualised) | +4.21% |
| 5 years (annualised) | −0.75% |
WACSX Annual Returns
Calendar-year total returns of Western Asset Core Bond Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +0.65% |
| 2025 | +7.97% |
| 2024 | +0.74% |
| 2023 | +5.84% |
| 2022 | −16.88% |
| 2021 | −1.81% |
| 2020 | +9.13% |
| 2019 (Jul–Dec) | +2.97% |
WACSX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +0.2% | +1.5% | −1.9% | +0.4% | +0.3% | +0.2% | — | — | — | — | — | — |
| 2025 | +0.7% | +2.1% | −0.1% | +0.3% | −0.6% | +1.8% | −0.3% | +1.5% | +1.1% | +0.6% | +0.7% | −0.2% |
| 2024 | −0.2% | −1.6% | +1.0% | −2.9% | +1.9% | +0.9% | +2.5% | +1.5% | +1.5% | −2.9% | +1.2% | −1.8% |
| 2023 | +4.3% | −3.1% | +2.4% | +0.6% | −1.4% | −0.2% | +0.1% | −0.9% | −3.5% | −2.1% | +5.5% | +4.5% |
| 2022 | −2.7% | −2.0% | −3.3% | −4.7% | +0.7% | −2.5% | +2.8% | −3.1% | −5.5% | −1.7% | +4.9% | −0.7% |
| 2021 | −0.9% | −1.8% | −1.2% | +0.9% | +0.3% | +0.9% | +1.2% | 0.0% | −1.1% | −0.2% | +0.1% | −0.1% |
| 2020 | +1.6% | +0.8% | −2.6% | +2.9% | +1.5% | +1.2% | +2.3% | −0.5% | −0.3% | −0.3% | +1.9% | +0.4% |
| 2019 | — | — | — | — | — | — | +0.3% | +2.3% | −0.3% | +0.3% | +0.1% | +0.3% |
WACSX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 6.51%
- 3-year Sharpe ratio: -0.04 (vs 4.5% risk-free rate)
- Best month: +5.54% (Nov 2023)
- Worst month: −3.49% (Sep 2023)
WACSX Fund Flows
Monthly money in and out of Western Asset Core Bond Fund, from SEC Form N-PORT.
- 12-month net flow: −$569.1M
- 12-month gross sales (incl. reinvestments): $339.0M
- Sales ÷ redemptions: 0.37×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $25.3M | $51.0M | −$25.7M |
| May 2026 | $21.9M | $58.6M | −$36.6M |
| Apr 2026 | $28.5M | $56.3M | −$27.8M |
| Mar 2026 | $25.1M | $53.0M | −$27.9M |
| Feb 2026 | $22.4M | $52.1M | −$29.7M |
| Jan 2026 | $32.6M | $57.7M | −$25.1M |
| Dec 2025 | $28.7M | $64.2M | −$35.5M |
| Nov 2025 | $27.5M | $53.7M | −$26.2M |
| Oct 2025 | $35.8M | $75.7M | −$39.9M |
| Sep 2025 | $38.7M | $72.7M | −$34.0M |
| Aug 2025 | $27.4M | $96.8M | −$69.4M |
| Jul 2025 | $25.1M | $216.4M | −$191.4M |
WACSX Assets Under Management
Net assets of Western Asset Core Bond Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $1.67B |
| 2026-03-31 | $1.77B |
| 2025-12-31 | $1.87B |
| 2025-09-30 | $1.97B |
| 2025-06-30 | $2.24B |
| 2025-03-31 | $2.57B |
| 2024-12-31 | $3.37B |
| 2024-09-30 | $7.32B |
| 2024-06-28 | $12.73B |
| 2024-03-28 | $13.67B |
| 2023-12-29 | $14.51B |
| 2023-09-29 | $14.18B |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.