MID Performance — American Century Mid Cap Growth Impact ETF
Data updated: 2026-10-09
MID returned +4.34% year to date and +7.54% over one year to May 2026. Annualised returns are +15.12% over 3 years and +6.03% over 5 years. The fund trailed its US Mid-Cap Growth category average: $100 invested three years ago grew to $153, against $157 for the category, and to $108 over one year, against $119. Volatility over the past three years was 17.47% a year. In the 12 months to May 2026 the fund took in a net $9.7M, and assets reached $99.51M.
MID Growth of $100
What $100 invested in American Century Mid Cap Growth Impact ETF grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Mid-Cap Growth category average over the same months.
| Period | MID | Category average |
|---|---|---|
| 1 year (Jun 2025 – May 2026) | $108 | $119 |
| 3 years (Jun 2023 – May 2026) | $153 | $157 |
| 5 years (Jun 2021 – May 2026) | $134 | $129 |
| Since data start (Jul 2020 – May 2026) | $177 | $179 |
MID Trailing Returns
Total returns to May 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +4.34% |
| 1 year | +7.54% |
| 3 years (annualised) | +15.12% |
| 5 years (annualised) | +6.03% |
MID Annual Returns
Calendar-year total returns of American Century Mid Cap Growth Impact ETF, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–May) | +4.34% |
| 2025 | +8.11% |
| 2024 | +19.40% |
| 2023 | +22.22% |
| 2022 | −27.36% |
| 2021 | +10.36% |
| 2020 (Jul–Dec) | +34.38% |
MID Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +1.0% | 0.0% | −6.7% | +7.5% | +3.0% | — | — | — | — | — | — | — |
| 2025 | +6.1% | −5.3% | −6.5% | +2.1% | +9.3% | +4.4% | +0.1% | +1.4% | −0.9% | +1.7% | −1.3% | −2.3% |
| 2024 | +0.2% | +9.8% | +3.6% | −4.3% | +1.4% | +1.8% | −0.1% | +4.1% | +3.5% | −2.8% | +6.9% | −5.4% |
| 2023 | +7.5% | +0.6% | +1.6% | −3.3% | +1.5% | +6.1% | +1.9% | −2.7% | −4.9% | −7.4% | +12.8% | +8.3% |
| 2022 | −15.1% | +0.1% | +3.2% | −12.7% | −2.0% | −8.0% | +15.9% | −3.5% | −9.1% | +4.5% | +7.4% | −7.8% |
| 2021 | +1.2% | +1.0% | −5.4% | +4.4% | −2.5% | +9.8% | +5.7% | +2.7% | −6.2% | +8.3% | −4.6% | −2.9% |
| 2020 | — | — | — | — | — | — | +7.4% | +3.4% | 0.0% | +0.6% | +12.2% | +7.1% |
MID Risk
Risk measures from monthly returns over Jun 2023 – May 2026.
- 3-year volatility (annualised): 17.47%
- 3-year Sharpe ratio: 0.61 (vs 4.5% risk-free rate)
- Best month: +12.85% (Nov 2023)
- Worst month: −7.37% (Oct 2023)
MID Fund Flows
Monthly money in and out of American Century Mid Cap Growth Impact ETF, from SEC Form N-PORT.
- 12-month net flow: $9.7M
- 12-month gross sales (incl. reinvestments): $38.7M
- Sales ÷ redemptions: 1.34×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| May 2026 | $4.0M | $654K | $3.3M |
| Apr 2026 | $944K | $0 | $944K |
| Mar 2026 | $313K | $618K | −$305K |
| Feb 2026 | $3.0M | $3.0M | $12K |
| Jan 2026 | $4.7M | $9.5M | −$4.8M |
| Dec 2025 | $8.6M | $1.0M | $7.6M |
| Nov 2025 | $338K | $0 | $338K |
| Oct 2025 | $2.7M | $2.7M | −$17K |
| Sep 2025 | $4.3M | $3.0M | $1.3M |
| Aug 2025 | $1.0M | $675K | $332K |
| Jul 2025 | $658K | $7.9M | −$7.2M |
| Jun 2025 | $8.2M | $0 | $8.2M |
MID Assets Under Management
Net assets of American Century Mid Cap Growth Impact ETF by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-05-31 | $99.51M |
| 2026-02-28 | $92.38M |
| 2025-11-30 | $90.70M |
| 2025-08-31 | $89.51M |
| 2025-05-31 | $83.18M |
| 2025-02-28 | $78.51M |
| 2024-11-30 | $80.07M |
| 2024-08-31 | $70.33M |
| 2024-05-31 | $65.56M |
| 2024-02-29 | $65.48M |
| 2023-11-30 | $46.74M |
| 2023-08-31 | $45.14M |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.