MFS Corporate Bond Portfolio
Data updated: 2026-05-26
C000007237 — MFS Corporate Bond Portfolio data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Intermediate Corporate Bond · $125.51M AUM · 0.63% expense ratio · 4.7% 1-yr return. From SEC regulatory filings.
C000007237 Fund Overview
MFS Corporate Bond Portfolio is a US mutual fund managed by Mfs Variable Insurance Trust II, categorised as Intermediate Corporate 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 II
- Category: Intermediate Corporate Bond
- Assets under management: $125.51M
- 1-year return: 4.7%
- SEC CIK: 0000719269
- SEC series ID: S000002634
- Share class ID: C000007237
C000007237 Holdings
Top 10 holdings of MFS Corporate Bond Portfolio by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| MFS Institutional Money Market Portfolio | 1.93% |
| Ubs Group AG | 0.85% |
| JPMorgan Chase & Co. | 0.83% |
| Boeing Co. | 0.76% |
| Govt Of Bermuda | 0.62% |
| Charles Schwab Corp. | 0.61% |
| Sumitomo Mitsui Finl Grp | 0.59% |
| Morgan Stanley | 0.57% |
| Nordea Bank Abp | 0.57% |
| Caixabank SA | 0.53% |
C000007237 Portfolio Allocation
Asset-class allocation of MFS Corporate Bond Portfolio by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 93.2% |
| Securitized | 3.6% |
| Equity | 1.9% |
C000007237 Performance
Total returns for C000007237 (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.5% |
| 1 year | 4.7% |
| 3 years (annualised) | 4.9% |
| 5 years (annualised) | 0.8% |
C000007237 Risk Information
Risk metrics for C000007237, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.5%
C000007237 Costs and Fees
C000007237 costs about $63 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.63%
- Gross expense ratio: 0.75%
- Portfolio turnover: 39%
- Brokerage commissions: 0.32 bps of average net assets (SEC N-CEN)
C000007237 Cashflows
Over the 12 months to 2026-03, MFS Corporate Bond Portfolio had net outflows of $10.27M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$1.17M |
| 2026-02 | −$971.58K |
| 2026-01 | −$1.51M |
| 2025-12 | −$751.52K |
| 2025-11 | −$1.56M |
| 2025-10 | −$1.73M |
C000007237 Debt Constituents
Largest debt holdings of MFS Corporate Bond Portfolio by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Ubs Group AG | 0.85% |
| JPMorgan Chase & Co. | 0.83% |
| Boeing Co. | 0.76% |
| Govt Of Bermuda | 0.62% |
| Charles Schwab Corp. | 0.61% |
| Sumitomo Mitsui Finl Grp | 0.59% |
| Morgan Stanley | 0.57% |
| Nordea Bank Abp | 0.57% |
| Caixabank SA | 0.53% |
| American Homes 4 Rent | 0.50% |
C000007237 Prospectus and SEC Filings
Official MFS Corporate Bond Portfolio filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Intermediate Corporate 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.