MFS Total Return Bond Series
Data updated: 2026-05-26
C000007302 — MFS Total Return Bond Series data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Total / Aggregate Bond · $1.47B AUM · 0.53% expense ratio · 4.5% 1-yr return. From SEC regulatory filings.
C000007302 Fund Overview
MFS Total Return Bond Series is a US mutual fund managed by Mfs Variable Insurance Trust, 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: Mfs Variable Insurance Trust
- Category: Long Total / Aggregate Bond
- Assets under management: $1.47B
- 1-year return: 4.5%
- SEC CIK: 0000918571
- SEC series ID: S000002666
- Share class ID: C000007302
C000007302 Holdings
Top 10 holdings of MFS Total Return Bond Series by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| United States Treasury | 4.83% |
| United States Treasury | 2.34% |
| United States Treasury | 2.04% |
| United States Treasury | 1.37% |
| United States Treasury | 1.33% |
| United States Treasury | 1.18% |
| United States Treasury | 1.08% |
| United States Treasury | 1.00% |
| Wells Fargo Commercial Mortgage Trust | 0.89% |
| United States Treasury | 0.88% |
C000007302 Portfolio Allocation
Asset-class allocation of MFS Total Return Bond Series by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 61.0% |
| Securitized | 38.2% |
| Equity | 0.2% |
C000007302 Performance
Total returns for C000007302 (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.1% |
| 1 year | 4.5% |
| 3 years (annualised) | 4.6% |
| 5 years (annualised) | 0.8% |
C000007302 Risk Information
Risk metrics for C000007302, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.4%
C000007302 Costs and Fees
C000007302 costs about $53 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.53%
- Gross expense ratio: 0.54%
- Portfolio turnover: 47%
- Brokerage commissions: 0.28 bps of average net assets (SEC N-CEN)
C000007302 Cashflows
Over the 12 months to 2026-03, MFS Total Return Bond Series had net outflows of $31.24M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$11.35M |
| 2026-02 | −$7.50M |
| 2026-01 | −$8.40M |
| 2025-12 | −$3.37M |
| 2025-11 | −$8.72M |
| 2025-10 | −$12.72M |
C000007302 Debt Constituents
Largest debt holdings of MFS Total Return Bond Series by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury | 4.83% |
| United States Treasury | 2.34% |
| United States Treasury | 2.04% |
| United States Treasury | 1.37% |
| United States Treasury | 1.33% |
| United States Treasury | 1.18% |
| United States Treasury | 1.08% |
| United States Treasury | 1.00% |
| United States Treasury | 0.88% |
| United States Treasury | 0.88% |
C000007302 Prospectus and SEC Filings
Official MFS Total Return Bond Series 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.