TMDIX vs. NEEIX
TMDIX (AMG TimesSquare Mid Cap Growth Fund) and NEEIX (Needham Growth Fund Institutional Class) are both Mid Cap Growth Equities funds. Over the past 5 years, TMDIX returned 2.93%/yr vs 10.10%/yr for NEEIX. Their correlation of 0.83 means they have usually moved in the same direction. TMDIX charges 0.98%/yr vs 1.21%/yr for NEEIX.
Performance
TMDIX vs. NEEIX - Performance Comparison
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Returns By Period
In the year-to-date period, TMDIX achieves a 4.53% return, which is significantly lower than NEEIX's 34.81% return.
TMDIX
- 1D
- 2.45%
- 1M
- -3.41%
- 6M
- 5.22%
- YTD
- 4.53%
- 1Y
- -6.10%
- 3Y*
- 6.58%
- 5Y*
- 2.93%
- 10Y*
- 12.70%
- ALL TIME*
- 10.91%
NEEIX
- 1D
- 5.86%
- 1M
- -9.99%
- 6M
- 17.35%
- YTD
- 34.81%
- 1Y
- 52.00%
- 3Y*
- 18.86%
- 5Y*
- 10.10%
- 10Y*
- —
- ALL TIME*
- 14.98%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
TMDIX vs. NEEIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
TMDIX AMG TimesSquare Mid Cap Growth Fund | 4.53% | -1.76% | 10.84% | 25.07% | -22.26% | 16.75% | 33.42% | 63.26% | -4.28% | 22.66% |
NEEIX Needham Growth Fund Institutional Class | 34.81% | 9.32% | 19.26% | 27.30% | -33.26% | 28.13% | 42.39% | 43.15% | -10.13% | 8.47% |
Correlation
The correlation between TMDIX and NEEIX is 0.77, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.77 |
Correlation (3Y) Balances recent behavior with more history. | 0.78 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.83 |
Correlation (All Time) Calculated using the full available price history since Jan 3, 2017 | 0.83 |
The correlation between TMDIX and NEEIX has been stable across timeframes, ranging from 0.77 to 0.83 - a consistent structural relationship.
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Return for Risk
TMDIX vs. NEEIX — Risk / Return Rank
TMDIX
NEEIX
TMDIX vs. NEEIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for AMG TimesSquare Mid Cap Growth Fund (TMDIX) and Needham Growth Fund Institutional Class (NEEIX). 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.
| TMDIX | NEEIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.83 | ||
| Sortino ratioReturn per unit of downside risk | -2.33 | ||
| Omega ratioGain probability vs. loss probability | 0.95 | 1.25 | -0.30 |
| Calmar ratioReturn relative to maximum drawdown | -0.31 | 2.03 | -2.34 |
| Martin ratioReturn relative to average drawdown | -0.61 | 8.46 | -9.08 |
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Drawdowns
TMDIX vs. NEEIX - Drawdown Comparison
The maximum TMDIX drawdown since its inception was -48.73%, which is greater than NEEIX's maximum drawdown of -43.11%. Use the drawdown chart below to compare losses from any high point for TMDIX and NEEIX.
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Drawdown Indicators
| TMDIX | NEEIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -48.73% | -43.11% | -5.62% |
Max Drawdown (1Y)Largest decline over 1 year | -25.45% | -23.12% | -2.33% |
Max Drawdown (3Y)Largest decline over 3 years | -25.45% | -36.13% | +10.68% |
Max Drawdown (5Y)Largest decline over 5 years | -30.53% | -43.11% | +12.58% |
Max Drawdown (10Y)Largest decline over 10 years | -35.44% | — | — |
Current DrawdownCurrent decline from peak | -12.48% | -18.62% | +6.14% |
Average DrawdownAverage peak-to-trough decline | -7.19% | -10.82% | +3.63% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 12.95% | 5.66% | +7.29% |
Volatility
TMDIX vs. NEEIX - Volatility Comparison
The current volatility for AMG TimesSquare Mid Cap Growth Fund (TMDIX) is 4.81%, while Needham Growth Fund Institutional Class (NEEIX) has a volatility of 12.98%. This indicates that TMDIX experiences smaller price fluctuations and is considered to be less risky than NEEIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| TMDIX | NEEIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.81% | 12.98% | -8.17% |
Volatility (6M)Calculated over the trailing 6-month period | 14.06% | 26.84% | -12.78% |
Volatility (1Y)Calculated over the trailing 1-year period | 20.64% | 32.46% | -11.82% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 20.59% | 29.43% | -8.84% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 21.11% | 26.32% | -5.21% |
TMDIX vs. NEEIX - Expense Ratio Comparison
TMDIX has a 0.98% expense ratio, which is lower than NEEIX's 1.21% expense ratio.
Dividends
TMDIX vs. NEEIX - Dividend Comparison
TMDIX has not paid dividends to shareholders, while NEEIX's dividend yield for the trailing twelve months is around 5.31%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
NEEIX Needham Growth Fund Institutional Class | 5.31% | 7.16% | 7.48% | 0.00% | 1.72% | 6.70% | 5.58% | 11.09% | 17.58% | 9.64% | 0.00% | 0.00% |
TMDIX AMG TimesSquare Mid Cap Growth Fund | 0.00% | 0.00% | 8.08% | 3.98% | 3.69% | 29.72% | 18.28% | 31.06% | 16.38% | 14.44% | 5.90% | 7.73% |
Frequently Asked Questions
TMDIX and NEEIX have a correlation of 0.77, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
NEEIX has higher volatility (12.98%) compared to TMDIX (4.81%). In terms of maximum drawdown, TMDIX dropped -48.73% vs NEEIX's -43.11%.
NEEIX currently has the higher Sharpe Ratio (1.44 vs -0.39), 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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