MID — American Century Mid Cap Growth Impact ETF
Data updated: 2026-07-29
MID — American Century Mid Cap Growth Impact ETF data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. United States Mid Cap Growth Equity · $99.51M AUM · 0.45% expense ratio · 7.5% 1-yr return. From SEC regulatory filings.
MID Fund Overview
MID — American Century Mid Cap Growth Impact ETF is a US ETF managed by American Century ETF 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 ETF
- Manager: American Century ETF Trust
- Category: United States Mid Cap Growth Equity
- Assets under management: $99.51M
- 1-year return: 7.5%
- Ticker: MID
- SEC CIK: 0001710607
- SEC series ID: S000068306
- Share class ID: C000218645
MID Holdings
Top 10 holdings of American Century Mid Cap Growth Impact ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Monolithic Power Systems Inc | 8.20% |
| Cloudflare Inc | 7.26% |
| Okta Inc | 7.01% |
| Johnson Controls International plc | 5.40% |
| Cadence Design Systems Inc | 4.82% |
| WESCO International Inc | 4.68% |
| Targa Resources Corp | 4.51% |
| Vistra Corp | 4.13% |
| Hubbell Inc | 3.84% |
| Vertiv Holdings Co | 3.79% |
MID Portfolio Allocation
Asset-class allocation of American Century Mid Cap Growth Impact ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 97.1% |
| Cash & Equivalents | 2.9% |
MID Performance
Total returns for MID (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 4.3% |
| 1 year | 7.5% |
| 3 years (annualised) | 15.1% |
| 5 years (annualised) | 6.0% |
MID Risk Information
Risk metrics for MID, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 12.2%
MID Costs and Fees
MID costs about $45 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.45%
- Gross expense ratio: 0.45%
- Portfolio turnover: 44%
- Brokerage commissions: 2.78 bps of average net assets (SEC N-CEN)
MID Cashflows
Over the 12 months to 2026-02, American Century Mid Cap Growth Impact ETF had net inflows of $6.94M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-02 | $11.97K |
| 2026-01 | −$4.80M |
| 2025-12 | $7.61M |
| 2025-11 | $337.52K |
| 2025-10 | −$17.33K |
| 2025-09 | $1.32M |
MID Debt Constituents
No individual debt constituents are reported in American Century Mid Cap Growth Impact ETF's latest SEC N-PORT filing.
MID Prospectus and SEC Filings
Official American Century Mid Cap Growth Impact ETF 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.