FNIAX vs. MIGFX

Last updated Jun 23, 2026

FNIAX (Fidelity Advisor New Insights Fund Class A) and MIGFX (MFS Massachusetts Investors Growth Stock Fund) are both Large Cap Growth Equities funds. Over the past 10 years, FNIAX returned 16.88%/yr vs 14.42%/yr for MIGFX. Their correlation of 0.89 suggests significant overlap in exposure. FNIAX charges 0.93%/yr vs 0.70%/yr for MIGFX.

Performance

FNIAX vs. MIGFX - Performance Comparison

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

Returns By Period

In the year-to-date period, FNIAX achieves a 13.98% return, which is significantly higher than MIGFX's -3.03% return. Over the past 10 years, FNIAX has outperformed MIGFX with an annualized return of 16.88%, while MIGFX has yielded a comparatively lower 14.42% annualized return.

FNIAX

• 1D: 1.10%
• 1M: 5.47%
• YTD: 13.98%
• 6M: 13.71%
• 1Y: 31.64%
• 3Y*: 27.82%
• 5Y*: 15.83%
• 10Y*: 16.88%

MIGFX

• 1D: 0.95%
• 1M: -0.69%
• YTD: -3.03%
• 6M: -3.24%
• 1Y: 7.48%
• 3Y*: 13.39%
• 5Y*: 9.47%
• 10Y*: 14.42%

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

FNIAX vs. MIGFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FNIAX Fidelity Advisor New Insights Fund Class A	13.98%	21.17%	34.94%	35.97%	-26.57%	24.40%	23.62%	29.17%	-4.67%	28.07%
MIGFX MFS Massachusetts Investors Growth Stock Fund	-3.03%	9.97%	27.25%	24.13%	-19.20%	26.06%	22.55%	39.89%	0.81%	28.68%

Correlation

The correlation between FNIAX and MIGFX is 0.77, 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	0.77
Correlation (3Y) Calculated over the trailing 3-year period	0.83
Correlation (5Y) Calculated over the trailing 5-year period	0.88
Correlation (10Y) Calculated over the trailing 10-year period	0.89
Correlation (All Time) Calculated using the full available price history since Jan 8, 2003	0.89

The correlation between FNIAX and MIGFX shifts across timeframes, from 0.77 (1 year) to 0.89 (10 years), reflecting how their relationship changes across market environments.

Return for Risk

FNIAX vs. MIGFX — Risk / Return Rank

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

FNIAX

FNIAX Risk / Return Rank: 60
FNIAX Sharpe Ratio Rank: 56
FNIAX Sortino Ratio Rank: 52
FNIAX Omega Ratio Rank: 52
FNIAX Calmar Ratio Rank: 66
FNIAX Martin Ratio Rank: 73

MIGFX

MIGFX Risk / Return Rank: 7
MIGFX Sharpe Ratio Rank: 7
MIGFX Sortino Ratio Rank: 7
MIGFX Omega Ratio Rank: 7
MIGFX Calmar Ratio Rank: 6
MIGFX Martin Ratio Rank: 7

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.

FNIAX vs. MIGFX - Risk-Adjusted Trends Comparison

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

	FNIAX	MIGFX	Difference
Sharpe ratio: Return per unit of total volatility	2.03	0.54	+1.49
Sortino ratio: Return per unit of downside risk	2.78	0.82	+1.96
Omega ratio: Gain probability vs. loss probability	1.36	1.10	+0.26
Calmar ratio: Return relative to maximum drawdown	2.99	0.51	+2.48
Martin ratio: Return relative to average drawdown	13.01	1.66	+11.35

FNIAX vs. MIGFX - Sharpe Ratio Comparison

The current FNIAX Sharpe Ratio is 2.03, which is higher than the MIGFX Sharpe Ratio of 0.54. The chart below compares the historical Sharpe Ratios of FNIAX and MIGFX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

FNIAX vs. MIGFX - Drawdown Comparison

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

Drawdown Indicators

	FNIAX	MIGFX	Difference
Max Drawdown Largest peak-to-trough decline	-49.69%	-61.83%	+12.14%
Max Drawdown (1Y) Largest decline over 1 year	-10.41%	-13.77%	+3.36%
Max Drawdown (3Y) Largest decline over 3 years	-20.61%	-18.68%	-1.93%
Max Drawdown (5Y) Largest decline over 5 years	-31.98%	-26.67%	-5.31%
Max Drawdown (10Y) Largest decline over 10 years	-31.98%	-32.42%	+0.44%
Current Drawdown Current decline from peak	-0.46%	-5.04%	+4.58%
Average Drawdown Average peak-to-trough decline	-7.22%	-18.94%	+11.72%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.39%	4.25%	-1.86%

Volatility

FNIAX vs. MIGFX - Volatility Comparison

Fidelity Advisor New Insights Fund Class A (FNIAX) has a higher volatility of 6.57% compared to MFS Massachusetts Investors Growth Stock Fund (MIGFX) at 4.89%. This indicates that FNIAX's price experiences larger fluctuations and is considered to be riskier than MIGFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FNIAX	MIGFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.57%	4.89%	+1.68%
Volatility (6M) Calculated over the trailing 6-month period	12.23%	10.65%	+1.58%
Volatility (1Y) Calculated over the trailing 1-year period	15.36%	13.13%	+2.23%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.24%	17.61%	+1.63%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.37%	18.25%	+1.12%

FNIAX vs. MIGFX - Expense Ratio Comparison

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

Dividends

FNIAX vs. MIGFX - Dividend Comparison

FNIAX's dividend yield for the trailing twelve months is around 8.20%, less than MIGFX's 11.75% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FNIAX Fidelity Advisor New Insights Fund Class A	8.20%	8.96%	5.85%	6.18%	17.12%	12.66%	8.14%	6.48%	13.78%	7.61%	4.99%	4.40%
MIGFX MFS Massachusetts Investors Growth Stock Fund	11.75%	11.39%	17.15%	4.11%	4.49%	10.47%	7.43%	7.39%	10.76%	6.87%	5.12%	6.51%

Frequently Asked Questions

Can I hold both FNIAX and MIGFX in my portfolio?

FNIAX and MIGFX 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.

Which is riskier, FNIAX or MIGFX?

FNIAX has higher volatility (6.57%) compared to MIGFX (4.89%). In terms of maximum drawdown, FNIAX dropped -49.69% vs MIGFX's -61.83%.

Which has better risk-adjusted returns?

FNIAX currently has the higher Sharpe Ratio (2.03 vs 0.54), 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.