SCOSX — MFS Blended Research Small Cap Equity Portfolio
Data updated: 2026-08-24
SCOSX — MFS Blended Research Small Cap Equity Portfolio. United States Small Cap Blend / Core Equity. Holdings, fees, performance and SEC filings.
SCOSX Fund Overview
SCOSX — MFS Blended Research Small Cap Equity Portfolio is a US mutual fund managed by Mfs Variable Insurance Trust III, categorised as United States Small Cap Blend / Core Equity. 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 III
- Category: United States Small Cap Blend / Core Equity
- Assets under management: $86.09M
- 1-year return: 31.8%
- Ticker: SCOSX
- SEC CIK: 0001065698
- SEC series ID: S000008071
- Share class ID: C000021905
SCOSX Investment Objective and Strategy
MFS Blended Research Small Cap Equity Portfolio describes its objective and strategy as follows, from its latest prospectus filed with the SEC by Mfs Variable Insurance Trust III.
Investment objective
The funds investment objective is to seek capital appreciation.
Principal investment strategy
MFS (Massachusetts Financial Services Company, the fund's investment adviser) seeks to achieve the fund's objective by actively identifying potential investments based on fundamental and quantitative analysis and then constructing a portfolio from these potential investments while managing various risk factors (e.g., issuer, industry, and sector weightings, market capitalization, and volatility ) compared to the Russell 2000 Index. MFS normally invests at least 80% of the funds net assets in equity securities of issuers with small market capitalizations. MFS defines small market capitalization companies as issuers that (i) have market capitalizations within the capitalization range of the Russell 2000 Index over the past 12 months based on the current composition of the index and/or are (ii) classified as a small capitalization company by an independent third party financial data provider.
The maximum market capitalization of companies considered to have small capitalizations based on the above criteria will change over time depending on market conditions. For illustrative purposes, March 31, 2026, the range of the market capitalizations of the issuers in the Russell 2000 Index was between approximately $4.4 million and $38.3 billion, and the funds average weighted market capitalization as of that date was $6.2 billion. Equity securities include common stocks, depositary receipts, equity interests in real estate investment trusts (REITs), and other securities that represent an ownership interest (or right to acquire an ownership interest) in a company or other issuer. In selecting investments for the fund, MFS is not constrained by any particular investment style. MFS may invest the funds assets in the stocks of companies it believes to have above average earnings growth potential compared to other companies (growth companies), in the stocks of companies it believes are undervalued compared to their perceived worth (value companies), or in a combination of growth and value companies.
MFS may invest the funds assets in foreign securities. MFS normally invests the fund's assets across different industries and sectors, but MFS may invest a significant percentage of the fund's assets in issuers in a single industry or sector. MFS uses an active bottom-up approach to buying and selling investments for the fund. Investments are selected primarily based on blending fundamental and quantitative research. MFS uses fundamental analysis of individual issuers to determine a fundamental rating for an issuer. MFS uses quantitative analysis to determine a quantitative rating for an issuer. MFS combines the fundamental rating with the quantitative rating to create a blended rating for an issuer. When the fundamental rating is not available, MFS treats the issuer as having a neutral fundamental rating.
MFS constructs the portfolio using a portfolio optimization process that considers the blended rating, as well as issuer, industry, and sector weightings, market capitalization, volatility, and other factors. The portfolio managers have the discretion to adjust the inputs and parameters used in the optimization process and the fund's portfolio holdings based on factors such as the desired portfolio characteristics and the portfolio managers qualitative assessment of the optimization results. MFS' goal is to construct an actively managed portfolio with a target predicted tracking error of approximately 3% compared to the Russell 2000 Index. Tracking error generally measures how the differences between the fund's returns and the Russell 2000 Index's returns have varied over a period of time.
For purposes of the fund's 80% policy, net assets include the amount of any borrowings for investment purposes.
SCOSX Holdings
Top 10 holdings of MFS Blended Research Small Cap Equity Portfolio by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| FormFactor Inc | 2.07% |
| MYR Group Inc | 1.78% |
| Advanced Energy Industries Inc | 1.64% |
| UMB Financial Corp | 1.60% |
| Corsair Gaming Inc | 1.51% |
| Popular Inc | 1.49% |
| Portland General Electric Co | 1.44% |
| Bloom Energy Corp | 1.37% |
| Modine Manufacturing Co | 1.36% |
| Envista Holdings Corp | 1.36% |
SCOSX Portfolio Allocation
Asset-class allocation of MFS Blended Research Small Cap Equity Portfolio by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 100.0% |
| Cash & Equivalents | 1.2% |
SCOSX Performance
Total returns for SCOSX (as of 2026-10-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 19.3% |
| 1 year | 31.8% |
| 3 years (annualised) | 13.7% |
| 5 years (annualised) | 6.2% |
SCOSX Risk Information
Risk metrics for SCOSX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 15.5%
SCOSX Costs and Fees
SCOSX costs about $58 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.58%
- Gross expense ratio: 0.59%
- Portfolio turnover: 72%
- Brokerage commissions: 4.82 bps of average net assets (SEC N-CEN)
SCOSX Cashflows
Over the 12 months to 2026-06, MFS Blended Research Small Cap Equity Portfolio had net outflows of $5.86M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$4.79M |
| 2026-05 | −$557.14K |
| 2026-04 | −$827.79K |
| 2026-03 | −$13.65K |
| 2026-02 | −$89.98K |
| 2026-01 | −$382.39K |
SCOSX Debt Constituents
No individual debt constituents are reported in MFS Blended Research Small Cap Equity Portfolio's latest SEC N-PORT filing.
SCOSX Prospectus and SEC Filings
Official MFS Blended Research Small Cap Equity Portfolio filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-04-29
- Prospectus (485BPOS) — filed 2025-04-29
- Prospectus (485BPOS) — filed 2024-04-26
- Portfolio holdings (N-PORT) — filed 2026-08-24
- Portfolio holdings (N-PORT) — filed 2026-05-26
- Portfolio holdings (N-PORT) — filed 2026-02-24
- Annual census (N-CEN) — filed 2026-03-13
- Annual census (N-CEN) — filed 2025-03-14
Related Funds
Other United States Small Cap Blend / Core Equity 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.