MTCIX vs. MGK
MTCIX (MFS Technology Fund) and MGK (Vanguard Mega Cap Growth ETF) are both funds - MTCIX is a Technology Equities fund managed by MFS, while MGK is a Large Cap Growth Equities fund tracking the CRSP US Mega Cap Growth Index. Over the past 10 years, MTCIX returned 22.73%/yr vs 18.97%/yr for MGK. Their correlation of 0.93 suggests significant overlap in exposure. MTCIX charges 0.88%/yr vs 0.05%/yr for MGK.
Performance
MTCIX vs. MGK - Performance Comparison
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Returns By Period
In the year-to-date period, MTCIX achieves a 19.54% return, which is significantly higher than MGK's 3.65% return. Over the past 10 years, MTCIX has outperformed MGK with an annualized return of 22.73%, while MGK has yielded a comparatively lower 18.97% annualized return.
MTCIX
- 1D
- 0.06%
- 1M
- 5.28%
- YTD
- 19.54%
- 6M
- 17.86%
- 1Y
- 38.25%
- 3Y*
- 37.51%
- 5Y*
- 17.44%
- 10Y*
- 22.73%
MGK
- 1D
- -2.12%
- 1M
- -3.93%
- YTD
- 3.65%
- 6M
- 2.34%
- 1Y
- 21.62%
- 3Y*
- 23.33%
- 5Y*
- 13.84%
- 10Y*
- 18.97%
MTCIX vs. MGK - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MTCIX MFS Technology Fund | 19.54% | 16.39% | 56.76% | 54.42% | -36.18% | 14.11% | 46.45% | 38.84% | 1.85% | 38.78% |
MGK Vanguard Mega Cap Growth ETF | 3.65% | 20.67% | 32.94% | 51.67% | -33.59% | 28.58% | 41.01% | 37.38% | -2.91% | 29.49% |
Correlation
The correlation between MTCIX and MGK is 0.92, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.92 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.94 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.95 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.95 |
Correlation (All Time) Calculated using the full available price history since Dec 27, 2007 | 0.93 |
The correlation between MTCIX and MGK has been stable across timeframes, ranging from 0.92 to 0.95 - a consistent structural relationship.
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Return for Risk
MTCIX vs. MGK — Risk / Return Rank
MTCIX
MGK
MTCIX vs. MGK - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for MFS Technology Fund (MTCIX) and Vanguard Mega Cap Growth ETF (MGK). 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.
| MTCIX | MGK | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.56 | ||
| Sortino ratioReturn per unit of downside risk | +0.62 | ||
| Omega ratioGain probability vs. loss probability | 1.31 | 1.22 | +0.09 |
| Calmar ratioReturn relative to maximum drawdown | 2.15 | 1.29 | +0.86 |
| Martin ratioReturn relative to average drawdown | 6.94 | 4.31 | +2.63 |
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Drawdowns
MTCIX vs. MGK - Drawdown Comparison
The maximum MTCIX drawdown since its inception was -82.78%, which is greater than MGK's maximum drawdown of -48.43%. Use the drawdown chart below to compare losses from any high point for MTCIX and MGK.
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Drawdown Indicators
| MTCIX | MGK | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -82.78% | -48.43% | -34.35% |
Max Drawdown (1Y)Largest decline over 1 year | -18.59% | -16.85% | -1.74% |
Max Drawdown (3Y)Largest decline over 3 years | -25.97% | -23.36% | -2.61% |
Max Drawdown (5Y)Largest decline over 5 years | -42.74% | -36.01% | -6.73% |
Max Drawdown (10Y)Largest decline over 10 years | -42.74% | -36.01% | -6.73% |
Current DrawdownCurrent decline from peak | -2.42% | -7.14% | +4.72% |
Average DrawdownAverage peak-to-trough decline | -29.81% | -7.58% | -22.23% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 5.75% | 5.02% | +0.73% |
Volatility
MTCIX vs. MGK - Volatility Comparison
MFS Technology Fund (MTCIX) has a higher volatility of 9.72% compared to Vanguard Mega Cap Growth ETF (MGK) at 7.08%. This indicates that MTCIX's price experiences larger fluctuations and is considered to be riskier than MGK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MTCIX | MGK | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 9.72% | 7.08% | +2.64% |
Volatility (6M)Calculated over the trailing 6-month period | 18.00% | 13.75% | +4.25% |
Volatility (1Y)Calculated over the trailing 1-year period | 22.09% | 17.33% | +4.76% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 25.68% | 22.80% | +2.88% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 24.21% | 21.96% | +2.25% |
MTCIX vs. MGK - Expense Ratio Comparison
MTCIX has a 0.88% expense ratio, which is higher than MGK's 0.05% expense ratio.
Dividends
MTCIX vs. MGK - Dividend Comparison
MTCIX's dividend yield for the trailing twelve months is around 11.47%, more than MGK's 0.34% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MGK Vanguard Mega Cap Growth ETF | 0.34% | 0.35% | 0.43% | 0.50% | 0.70% | 0.41% | 0.65% | 0.85% | 1.12% | 1.23% | 1.53% | 1.43% |
MTCIX MFS Technology Fund | 11.47% | 13.71% | 26.78% | 9.66% | 10.35% | 11.58% | 4.97% | 3.87% | 4.97% | 3.51% | 1.84% | 3.62% |
Frequently Asked Questions
With a correlation of 0.92, MTCIX and MGK move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
MTCIX has higher volatility (9.72%) compared to MGK (7.08%). In terms of maximum drawdown, MTCIX dropped -82.78% vs MGK's -48.43%.
MTCIX currently has the higher Sharpe Ratio (1.81 vs 1.26), 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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