MID vs. ^NDX
MID (American Century Mid Cap Growth Impact ETF) is Mid Cap Growth Equities fund actively managed by American Century, while ^NDX (NASDAQ 100 Index) is an index. Over the past 5 years, MID returned 6.75%/yr vs 17.78%/yr for ^NDX. Their correlation of 0.82 suggests significant overlap in exposure.
Performance
MID vs. ^NDX - Performance Comparison
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Returns By Period
In the year-to-date period, MID achieves a 5.98% return, which is significantly lower than ^NDX's 21.43% return.
MID
- 1D
- 0.35%
- 1M
- 4.45%
- YTD
- 5.98%
- 6M
- 4.36%
- 1Y
- 8.79%
- 3Y*
- 14.60%
- 5Y*
- 6.75%
- 10Y*
- —
^NDX
- 1D
- 0.48%
- 1M
- 10.65%
- YTD
- 21.43%
- 6M
- 19.97%
- 1Y
- 42.66%
- 3Y*
- 28.22%
- 5Y*
- 17.78%
- 10Y*
- 21.13%
MID vs. ^NDX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | |
|---|---|---|---|---|---|---|---|
MID American Century Mid Cap Growth Impact ETF | 5.98% | 8.22% | 19.40% | 22.20% | -27.44% | 10.39% | 29.63% |
^NDX NASDAQ 100 Index | 21.43% | 20.17% | 24.88% | 53.81% | -32.97% | 26.63% | 20.43% |
Correlation
The correlation between MID and ^NDX is 0.72, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.72 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.77 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.83 |
Correlation (All Time) Calculated using the full available price history since Jul 16, 2020 | 0.82 |
The correlation between MID and ^NDX shifts across timeframes, from 0.72 (1 year) to 0.83 (5 years), reflecting how their relationship changes across market environments.
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Return for Risk
MID vs. ^NDX — Risk / Return Rank
MID
^NDX
MID vs. ^NDX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Century Mid Cap Growth Impact ETF (MID) and NASDAQ 100 Index (^NDX). 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.
| MID | ^NDX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.53 | 2.67 | -2.14 |
Sortino ratioReturn per unit of downside risk | 0.85 | 3.47 | -2.62 |
Omega ratioGain probability vs. loss probability | 1.10 | 1.45 | -0.36 |
Calmar ratioReturn relative to maximum drawdown | 0.68 | 3.60 | -2.92 |
Martin ratioReturn relative to average drawdown | 2.02 | 13.80 | -11.77 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| MID | ^NDX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.53 | 2.67 | -2.14 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.29 | 0.79 | -0.50 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.94 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.41 | 0.57 | -0.16 |
Drawdowns
MID vs. ^NDX - Drawdown Comparison
The maximum MID drawdown since its inception was -40.15%, smaller than the maximum ^NDX drawdown of -82.90%. Use the drawdown chart below to compare losses from any high point for MID and ^NDX.
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Drawdown Indicators
| MID | ^NDX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -40.15% | -82.90% | +42.75% |
Max Drawdown (1Y)Largest decline over 1 year | -13.89% | -12.12% | -1.77% |
Max Drawdown (3Y)Largest decline over 3 years | -23.92% | -22.93% | -0.99% |
Max Drawdown (5Y)Largest decline over 5 years | -40.15% | -35.56% | -4.59% |
Max Drawdown (10Y)Largest decline over 10 years | — | -35.56% | — |
Current DrawdownCurrent decline from peak | 0.00% | 0.00% | 0.00% |
Average DrawdownAverage peak-to-trough decline | -13.45% | -24.62% | +11.17% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.66% | 3.17% | +1.49% |
Volatility
MID vs. ^NDX - Volatility Comparison
American Century Mid Cap Growth Impact ETF (MID) has a higher volatility of 4.84% compared to NASDAQ 100 Index (^NDX) at 4.51%. This indicates that MID's price experiences larger fluctuations and is considered to be riskier than ^NDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MID | ^NDX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.84% | 4.51% | +0.33% |
Volatility (6M)Calculated over the trailing 6-month period | 13.02% | 12.18% | +0.84% |
Volatility (1Y)Calculated over the trailing 1-year period | 16.73% | 16.09% | +0.64% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 23.64% | 22.60% | +1.04% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 23.93% | 22.53% | +1.40% |
Frequently Asked Questions
MID and ^NDX have a correlation of 0.72, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
MID has higher volatility (4.84%) compared to ^NDX (4.51%). In terms of maximum drawdown, MID dropped -40.15% vs ^NDX's -82.90%.
^NDX currently has the higher Sharpe Ratio (2.67 vs 0.53), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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