IOLZX vs. MGTIX

Last updated Jun 4, 2026

IOLZX (ICON Equity Fund) and MGTIX (MFS Massachusetts Investors Growth Stock Fund) are both Large Cap Growth Equities funds. Over the past 10 years, IOLZX returned 14.51%/yr vs 14.88%/yr for MGTIX. Their correlation of 0.83 suggests significant overlap in exposure. IOLZX charges 1.04%/yr vs 0.45%/yr for MGTIX.

Performance

IOLZX vs. MGTIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ICON Equity Fund (IOLZX) and MFS Massachusetts Investors Growth Stock Fund (MGTIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IOLZX achieves a 28.15% return, which is significantly higher than MGTIX's -0.23% return. Both investments have delivered pretty close results over the past 10 years, with IOLZX having a 14.51% annualized return and MGTIX not far ahead at 14.88%.

IOLZX

• 1D: 2.03%
• 1M: 8.48%
• YTD: 28.15%
• 6M: 30.91%
• 1Y: 50.12%
• 3Y*: 24.88%
• 5Y*: 11.20%
• 10Y*: 14.51%

MGTIX

• 1D: -0.62%
• 1M: 3.17%
• YTD: -0.23%
• 6M: 0.26%
• 1Y: 9.98%
• 3Y*: 15.87%
• 5Y*: 10.30%
• 10Y*: 14.88%

*Multi-year figures are annualized to reflect compound growth (CAGR)

IOLZX vs. MGTIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IOLZX ICON Equity Fund	28.15%	15.81%	16.87%	12.13%	-17.78%	26.72%	16.00%	38.22%	-16.69%	26.78%
MGTIX MFS Massachusetts Investors Growth Stock Fund	-0.23%	10.23%	27.38%	24.40%	-18.99%	26.41%	22.84%	40.17%	1.07%	28.97%

Correlation

The correlation between IOLZX and MGTIX is 0.64, 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	0.64
Correlation (3Y) Calculated over the trailing 3-year period	0.68
Correlation (5Y) Calculated over the trailing 5-year period	0.74
Correlation (10Y) Calculated over the trailing 10-year period	0.77
Correlation (All Time) Calculated using the full available price history since Feb 4, 2004	0.83

The correlation between IOLZX and MGTIX shifts across timeframes, from 0.64 (1 year) to 0.83 (all time), reflecting how their relationship changes across market environments.

Return for Risk

IOLZX vs. MGTIX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

IOLZX

IOLZX Risk / Return Rank: 76
IOLZX Sharpe Ratio Rank: 85
IOLZX Sortino Ratio Rank: 78
IOLZX Omega Ratio Rank: 68
IOLZX Calmar Ratio Rank: 80
IOLZX Martin Ratio Rank: 66

MGTIX

MGTIX Risk / Return Rank: 10
MGTIX Sharpe Ratio Rank: 11
MGTIX Sortino Ratio Rank: 10
MGTIX Omega Ratio Rank: 10
MGTIX Calmar Ratio Rank: 8
MGTIX Martin Ratio Rank: 9

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

IOLZX vs. MGTIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ICON Equity Fund (IOLZX) and MFS Massachusetts Investors Growth Stock Fund (MGTIX). 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.

	IOLZX	MGTIX	Difference
Sharpe ratio: Return per unit of total volatility	2.77	0.85	+1.92
Sortino ratio: Return per unit of downside risk	3.71	1.25	+2.46
Omega ratio: Gain probability vs. loss probability	1.46	1.15	+0.31
Calmar ratio: Return relative to maximum drawdown	3.65	0.79	+2.86
Martin ratio: Return relative to average drawdown	12.92	2.64	+10.28
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IOLZX vs. MGTIX - Sharpe Ratio Comparison

The current IOLZX Sharpe Ratio is 2.77, which is higher than the MGTIX Sharpe Ratio of 0.85. The chart below compares the historical Sharpe Ratios of IOLZX and MGTIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	IOLZX	MGTIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.77	0.85	+1.92
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.53	0.59	-0.07
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.65	0.82	-0.17
Sharpe Ratio (All Time) Calculated using the full available price history	0.41	0.49	-0.08

Drawdowns

IOLZX vs. MGTIX - Drawdown Comparison

The maximum IOLZX drawdown since its inception was -56.03%, smaller than the maximum MGTIX drawdown of -60.05%. Use the drawdown chart below to compare losses from any high point for IOLZX and MGTIX.

Drawdown Indicators

	IOLZX	MGTIX	Difference
Max Drawdown Largest peak-to-trough decline	-56.03%	-60.05%	+4.02%
Max Drawdown (1Y) Largest decline over 1 year	-14.35%	-13.71%	-0.64%
Max Drawdown (3Y) Largest decline over 3 years	-24.71%	-18.65%	-6.06%
Max Drawdown (5Y) Largest decline over 5 years	-27.77%	-26.52%	-1.25%
Max Drawdown (10Y) Largest decline over 10 years	-41.04%	-32.42%	-8.62%
Current Drawdown Current decline from peak	0.00%	-2.31%	+2.31%
Average Drawdown Average peak-to-trough decline	-12.63%	-17.13%	+4.50%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.04%	4.08%	-0.04%

Volatility

IOLZX vs. MGTIX - Volatility Comparison

ICON Equity Fund (IOLZX) has a higher volatility of 6.36% compared to MFS Massachusetts Investors Growth Stock Fund (MGTIX) at 3.40%. This indicates that IOLZX's price experiences larger fluctuations and is considered to be riskier than MGTIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IOLZX	MGTIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.36%	3.40%	+2.96%
Volatility (6M) Calculated over the trailing 6-month period	14.98%	9.81%	+5.17%
Volatility (1Y) Calculated over the trailing 1-year period	18.86%	12.65%	+6.21%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.43%	17.51%	+3.92%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.36%	18.21%	+4.15%

IOLZX vs. MGTIX - Expense Ratio Comparison

IOLZX has a 1.04% expense ratio, which is higher than MGTIX's 0.45% expense ratio.

Dividends

IOLZX vs. MGTIX - Dividend Comparison

IOLZX's dividend yield for the trailing twelve months is around 8.34%, less than MGTIX's 11.10% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IOLZX ICON Equity Fund	8.34%	10.69%	22.21%	4.75%	18.57%	14.12%	0.00%	3.46%	1.60%	0.00%	0.00%	0.00%
MGTIX MFS Massachusetts Investors Growth Stock Fund	11.10%	11.08%	16.84%	4.17%	4.59%	10.30%	7.43%	7.38%	10.72%	6.83%	5.00%	6.61%

Frequently Asked Questions

Can I hold both IOLZX and MGTIX in my portfolio?

IOLZX and MGTIX have a correlation of 0.64, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IOLZX or MGTIX?

IOLZX has higher volatility (6.36%) compared to MGTIX (3.40%). In terms of maximum drawdown, IOLZX dropped -56.03% vs MGTIX's -60.05%.

Which has better risk-adjusted returns?

IOLZX currently has the higher Sharpe Ratio (2.77 vs 0.85), 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.