OTCGX — MFS Mid Cap Growth Fund
Data updated: 2026-07-23
OTCGX — MFS Mid Cap Growth Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Mid Cap Growth Equity · $13.78B AUM · 1.77% expense ratio · 2.1% 1-yr return. From SEC regulatory filings.
OTCGX Fund Overview
OTCGX — MFS Mid Cap Growth Fund is a US mutual fund managed by Mfs Series Trust IV, 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 Series Trust IV
- Category: United States Mid Cap Growth Equity
- Assets under management: $13.78B
- 1-year return: 2.1%
- Ticker: OTCGX
- SEC CIK: 0000063068
- SEC series ID: S000002434
- Share class ID: C000006513
OTCGX Holdings
Top 10 holdings of MFS Mid Cap Growth Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Monolithic Power Systems, Inc. | 4.26% |
| Howmet Aerospace, Inc. | 3.95% |
| Quanta Services, Inc. | 3.34% |
| Take-Two Interactive Software, Inc. | 2.72% |
| Live Nation Entertainment, Inc. | 2.62% |
| Natera, Inc. | 2.18% |
| TKO Group Holdings, Inc. | 2.12% |
| Masimo Corp. | 2.12% |
| Ascendis Pharma A/S | 2.07% |
| Burlington Stores, Inc. | 1.95% |
OTCGX Portfolio Allocation
Asset-class allocation of MFS Mid Cap Growth Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.1% |
| Cash & Equivalents | 2.0% |
OTCGX Performance
Total returns for OTCGX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -0.2% |
| 1 year | 2.1% |
| 3 years (annualised) | 10.2% |
| 5 years (annualised) | 2.7% |
OTCGX Risk Information
Risk metrics for OTCGX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 12.1%
OTCGX Costs and Fees
OTCGX costs about $177 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.77%
- Gross expense ratio: 1.78%
- Portfolio turnover: 54%
- Brokerage commissions: 1.77 bps of average net assets (SEC N-CEN)
OTCGX Cashflows
Over the 12 months to 2026-02, MFS Mid Cap Growth Fund had net inflows of $257.45M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-02 | −$174.80M |
| 2026-01 | −$173.90M |
| 2025-12 | $1.70B |
| 2025-11 | −$119.96M |
| 2025-10 | −$83.27M |
| 2025-09 | $65.38M |
OTCGX Debt Constituents
No individual debt constituents are reported in MFS Mid Cap Growth Fund's latest SEC N-PORT filing.
OTCGX Prospectus and SEC Filings
Official MFS Mid Cap Growth Fund 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.