MID vs. ACSG
MID (American Century Mid Cap Growth Impact ETF) and ACSG (American Century Small Cap Growth Insights ETF) are both exchange-traded funds - MID is a Mid Cap Growth Equities fund actively managed by American Century, while ACSG is a Small Cap Growth Equities fund actively managed by American Century. Both are actively managed. Their correlation of 0.84 means they have usually moved in the same direction. MID charges 0.45%/yr vs 0.49%/yr for ACSG.
Performance
MID vs. ACSG - Performance Comparison
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Returns By Period
In the year-to-date period, MID achieves a 2.51% return, which is significantly lower than ACSG's 16.78% return.
MID
- 1D
- 0.19%
- 1M
- -2.00%
- 6M
- 1.56%
- YTD
- 2.51%
- 1Y
- 1.83%
- 3Y*
- 11.74%
- 5Y*
- 2.57%
- 10Y*
- —
- ALL TIME*
- 9.07%
ACSG
- 1D
- -0.66%
- 1M
- -3.40%
- 6M
- 14.08%
- YTD
- 16.78%
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
- ALL TIME*
- —
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $149.77K | $163.97K | $222.53K | |
| $78.49K | $249.03K | $206.22K |
MID vs. ACSG - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
MID American Century Mid Cap Growth Impact ETF | 2.51% | -2.38% |
ACSG American Century Small Cap Growth Insights ETF | 16.78% | -0.86% |
Correlation
The correlation between MID and ACSG is 0.84, meaning they have usually moved in the same direction, including during past declines.
| Correlation | |
|---|---|
Correlation (All Time) Calculated using the full available price history since Oct 16, 2025 | 0.84 |
MID vs. ACSG - Sectors Allocation Comparison
Sectors
MID
ACSG
Technology
Industrials
Healthcare
Consumer Cyclical
Energy
Communication Services
Utilities
Financial Services
Basic Materials
Consumer Defensive
Real Estate
-
Technology
MID
ACSG
Industrials
MID
ACSG
Healthcare
MID
ACSG
Consumer Cyclical
MID
ACSG
Energy
MID
ACSG
Communication Services
MID
ACSG
Utilities
MID
ACSG
Financial Services
MID
ACSG
Basic Materials
MID
ACSG
Consumer Defensive
MID
ACSG
Real Estate
MID
-
ACSG
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Return for Risk
MID vs. ACSG — Risk / Return Rank
MID
ACSG
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
MID vs. ACSG - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Century Mid Cap Growth Impact ETF (MID) and American Century Small Cap Growth Insights ETF (ACSG). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| MID | ACSG | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | 1.03 | — | — |
| Calmar ratioReturn relative to maximum drawdown | 0.09 | — | — |
| Martin ratioReturn relative to average drawdown | 0.26 | — | — |
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Drawdowns
MID vs. ACSG - Drawdown Comparison
The maximum MID drawdown since its inception was -40.15%, which is greater than ACSG's maximum drawdown of -13.28%. Use the drawdown chart below to compare losses from any high point for MID and ACSG.
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Drawdown Indicators
| MID | ACSG | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -40.15% | -13.28% | -26.87% |
Max Drawdown (1Y)Largest decline over 1 year | -13.89% | — | — |
Max Drawdown (3Y)Largest decline over 3 years | -23.92% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -40.15% | — | — |
Current DrawdownCurrent decline from peak | -4.83% | -5.00% | +0.17% |
Average DrawdownAverage peak-to-trough decline | -13.15% | -2.87% | -10.28% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.83% | — | — |
Volatility
MID vs. ACSG - Volatility Comparison
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Volatility by Period
| MID | ACSG | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.75% | — | — |
Volatility (6M)Calculated over the trailing 6-month period | 14.01% | — | — |
Volatility (1Y)Calculated over the trailing 1-year period | 17.75% | 22.34% | -4.59% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 23.72% | 22.34% | +1.38% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 23.80% | 22.34% | +1.46% |
MID vs. ACSG - Expense Ratio Comparison
MID has a 0.45% expense ratio, which is lower than ACSG's 0.49% expense ratio.
Dividends
MID vs. ACSG - Dividend Comparison
MID's dividend yield for the trailing twelve months is around 0.15%, while ACSG has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 |
|---|---|---|---|---|
ACSG American Century Small Cap Growth Insights ETF | 0.00% | 0.00% | 0.00% | 0.00% |
MID American Century Mid Cap Growth Impact ETF | 0.15% | 0.18% | 0.17% | 0.02% |
Frequently Asked Questions
MID and ACSG have a correlation of 0.84, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, MID is cheaper at 0.45% per year. The better choice depends on whether you care most about return, fees, risk, or income.
MID is cheaper with a 0.45% expense ratio, compared with 0.49% for ACSG.
MID has the higher dividend yield at 0.15%, compared with 0.00% for ACSG.
MID is categorized as Mid Cap Growth Equities, while ACSG is Small Cap Growth Equities. Their fees differ too: 0.45% for MID and 0.49% for ACSG.
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