MFS Mid Cap Growth Series
Data updated: 2026-05-26
C000007326 — MFS Mid Cap Growth Series data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Mid Cap Growth Equity · $319.40M AUM · 0.81% expense ratio · 3.5% 1-yr return. From SEC regulatory filings.
C000007326 Fund Overview
MFS Mid Cap Growth Series is a US mutual fund managed by Mfs Variable Insurance Trust, categorised as United States Mid Cap Growth 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
- Category: United States Mid Cap Growth Equity
- Assets under management: $319.40M
- 1-year return: 3.5%
- SEC CIK: 0000918571
- SEC series ID: S000002678
- Share class ID: C000007326
C000007326 Holdings
Top 10 holdings of MFS Mid Cap Growth Series by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Howmet Aerospace Inc | 4.15% |
| Monolithic Power Systems Inc | 3.31% |
| Quanta Services Inc | 2.89% |
| Take-Two Interactive Software Inc | 2.89% |
| Cheniere Energy Inc | 2.57% |
| Live Nation Entertainment Inc | 2.56% |
| Masimo Corp | 2.34% |
| Ascendis Pharma A/S | 2.27% |
| TKO Group Holdings Inc | 2.26% |
| Natera Inc | 2.22% |
C000007326 Portfolio Allocation
Asset-class allocation of MFS Mid Cap Growth Series by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 100.0% |
C000007326 Performance
Total returns for C000007326 (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -6.3% |
| 1 year | 3.5% |
| 3 years (annualised) | 8.0% |
| 5 years (annualised) | 2.5% |
C000007326 Risk Information
Risk metrics for C000007326, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 12.0%
C000007326 Costs and Fees
C000007326 costs about $81 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.81%
- Gross expense ratio: 0.82%
- Portfolio turnover: 62%
- Brokerage commissions: 1.89 bps of average net assets (SEC N-CEN)
C000007326 Cashflows
Over the 12 months to 2026-03, MFS Mid Cap Growth Series had net inflows of $41.11M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | $2.08M |
| 2026-02 | −$531.71K |
| 2026-01 | −$2.14M |
| 2025-12 | $2.26M |
| 2025-11 | $3.42K |
| 2025-10 | −$125.10K |
C000007326 Debt Constituents
No individual debt constituents are reported in MFS Mid Cap Growth Series's latest SEC N-PORT filing.
C000007326 Prospectus and SEC Filings
Official MFS Mid Cap Growth Series filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other United States Mid Cap Growth 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.