MIGFX vs. FNIAX

Last updated Apr 1, 2026

Compare and contrast key facts about MFS Massachusetts Investors Growth Stock Fund (MIGFX) and Fidelity Advisor New Insights Fund Class A (FNIAX).

MIGFX is managed by MFS. It was launched on Jan 1, 1935. FNIAX is managed by Fidelity. It was launched on Jul 31, 2003.

Performance

MIGFX vs. FNIAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Massachusetts Investors Growth Stock Fund (MIGFX) and Fidelity Advisor New Insights Fund Class A (FNIAX). The values are adjusted to include any dividend payments, if applicable.

MIGFX vs. FNIAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MIGFX MFS Massachusetts Investors Growth Stock Fund	-11.94%	9.97%	27.25%	24.13%	-19.20%	26.06%	22.55%	39.89%	0.81%	28.68%
FNIAX Fidelity Advisor New Insights Fund Class A	-7.49%	21.17%	34.94%	35.97%	-26.57%	24.40%	23.62%	29.17%	-4.67%	28.07%

Returns By Period

In the year-to-date period, MIGFX achieves a -11.94% return, which is significantly lower than FNIAX's -7.49% return. Over the past 10 years, MIGFX has underperformed FNIAX with an annualized return of 13.37%, while FNIAX has yielded a comparatively higher 14.58% annualized return.

MIGFX

• 1D: -0.22%
• 1M: -9.05%
• YTD: -11.94%
• 6M: -10.77%
• 1Y: 2.07%
• 3Y*: 12.38%
• 5Y*: 8.52%
• 10Y*: 13.37%

FNIAX

• 1D: -0.52%
• 1M: -9.26%
• YTD: -7.49%
• 6M: -4.20%
• 1Y: 20.18%
• 3Y*: 23.16%
• 5Y*: 12.88%
• 10Y*: 14.58%

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

MIGFX vs. FNIAX - Expense Ratio Comparison

MIGFX has a 0.70% expense ratio, which is lower than FNIAX's 0.93% expense ratio.

FNIAX

Fidelity Advisor New Insights Fund Class A

MIGFX

MFS Massachusetts Investors Growth Stock Fund

Return for Risk

MIGFX vs. FNIAX — Risk / Return Rank

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

MIGFX

MIGFX Risk / Return Rank: 8
MIGFX Sharpe Ratio Rank: 8
MIGFX Sortino Ratio Rank: 8
MIGFX Omega Ratio Rank: 8
MIGFX Calmar Ratio Rank: 7
MIGFX Martin Ratio Rank: 7

FNIAX

FNIAX Risk / Return Rank: 64
FNIAX Sharpe Ratio Rank: 58
FNIAX Sortino Ratio Rank: 62
FNIAX Omega Ratio Rank: 60
FNIAX Calmar Ratio Rank: 71
FNIAX Martin Ratio Rank: 68

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.

MIGFX vs. FNIAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Massachusetts Investors Growth Stock Fund (MIGFX) and Fidelity Advisor New Insights Fund Class A (FNIAX). 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.

	MIGFX	FNIAX	Difference
Sharpe ratio Return per unit of total volatility	0.14	1.04	-0.89
Sortino ratio Return per unit of downside risk	0.33	1.56	-1.23
Omega ratio Gain probability vs. loss probability	1.05	1.23	-0.18
Calmar ratio Return relative to maximum drawdown	0.04	1.59	-1.55
Martin ratio Return relative to average drawdown	0.14	6.45	-6.31
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MIGFX vs. FNIAX - Sharpe Ratio Comparison

The current MIGFX Sharpe Ratio is 0.14, which is lower than the FNIAX Sharpe Ratio of 1.04. The chart below compares the historical Sharpe Ratios of MIGFX and FNIAX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	MIGFX	FNIAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.14	1.04	-0.89
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.49	0.68	-0.19
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.74	0.76	-0.02
Sharpe Ratio (All Time) Calculated using the full available price history	0.38	0.60	-0.22

Correlation

The correlation between MIGFX and FNIAX is 0.89, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

MIGFX vs. FNIAX - Dividend Comparison

MIGFX's dividend yield for the trailing twelve months is around 12.93%, more than FNIAX's 10.10% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MIGFX MFS Massachusetts Investors Growth Stock Fund	12.93%	11.39%	17.15%	4.11%	4.49%	10.47%	7.43%	7.39%	10.76%	6.87%	5.12%	6.51%
FNIAX Fidelity Advisor New Insights Fund Class A	10.10%	8.96%	5.85%	6.18%	17.12%	12.66%	8.14%	6.48%	13.78%	7.61%	4.99%	4.40%

Drawdowns

MIGFX vs. FNIAX - Drawdown Comparison

The maximum MIGFX drawdown since its inception was -61.83%, which is greater than FNIAX's maximum drawdown of -49.69%. Use the drawdown chart below to compare losses from any high point for MIGFX and FNIAX.

Drawdown Indicators

	MIGFX	FNIAX	Difference
Max Drawdown Largest peak-to-trough decline	-61.83%	-49.69%	-12.14%
Max Drawdown (1Y) Largest decline over 1 year	-13.77%	-10.85%	-2.92%
Max Drawdown (5Y) Largest decline over 5 years	-26.67%	-31.98%	+5.31%
Max Drawdown (10Y) Largest decline over 10 years	-32.42%	-31.98%	-0.44%
Current Drawdown Current decline from peak	-13.77%	-10.41%	-3.36%
Average Drawdown Average peak-to-trough decline	-19.00%	-7.28%	-11.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.77%	2.68%	+1.09%

Volatility

MIGFX vs. FNIAX - Volatility Comparison

The current volatility for MFS Massachusetts Investors Growth Stock Fund (MIGFX) is 4.36%, while Fidelity Advisor New Insights Fund Class A (FNIAX) has a volatility of 5.30%. This indicates that MIGFX experiences smaller price fluctuations and is considered to be less risky than FNIAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MIGFX	FNIAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.36%	5.30%	-0.94%
Volatility (6M) Calculated over the trailing 6-month period	9.37%	10.84%	-1.47%
Volatility (1Y) Calculated over the trailing 1-year period	17.64%	19.55%	-1.91%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.45%	19.01%	-1.56%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.16%	19.22%	-1.06%