MIGNX vs. FBCGX

Last updated Jun 23, 2026

MIGNX (MFS Massachusetts Investors Growth Stock Fund Class R6) and FBCGX (Fidelity Blue Chip Growth K6 Fund) are both Large Cap Growth Equities funds. MIGNX is passively managed, while FBCGX is actively managed. Over the past 5 years, MIGNX returned 9.83%/yr vs 16.53%/yr for FBCGX. Their correlation of 0.86 suggests significant overlap in exposure. MIGNX charges 0.37%/yr vs 0.45%/yr for FBCGX.

Performance

MIGNX vs. FBCGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Massachusetts Investors Growth Stock Fund Class R6 (MIGNX) and Fidelity Blue Chip Growth K6 Fund (FBCGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MIGNX achieves a -2.85% return, which is significantly lower than FBCGX's 18.63% return.

MIGNX

• 1D: 0.97%
• 1M: -0.65%
• YTD: -2.85%
• 6M: -3.07%
• 1Y: 7.85%
• 3Y*: 13.75%
• 5Y*: 9.83%
• 10Y*: 14.76%

FBCGX

• 1D: 2.12%
• 1M: 5.28%
• YTD: 18.63%
• 6M: 18.09%
• 1Y: 43.66%
• 3Y*: 31.10%
• 5Y*: 16.53%
• 10Y*: —

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

MIGNX vs. FBCGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MIGNX MFS Massachusetts Investors Growth Stock Fund Class R6	-2.85%	10.31%	27.60%	24.51%	-18.92%	26.52%	22.96%	40.34%	1.14%	12.95%
FBCGX Fidelity Blue Chip Growth K6 Fund	18.63%	21.33%	38.15%	55.57%	-37.84%	23.00%	62.92%	36.11%	-2.33%	14.15%

Correlation

The correlation between MIGNX and FBCGX 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	0.82
Correlation (5Y) Calculated over the trailing 5-year period	0.86
Correlation (All Time) Calculated using the full available price history since May 25, 2017	0.86

The correlation between MIGNX and FBCGX has been stable across timeframes, ranging from 0.77 to 0.86 - a consistent structural relationship.

Return for Risk

MIGNX vs. FBCGX — Risk / Return Rank

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

MIGNX

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

FBCGX

FBCGX Risk / Return Rank: 70
FBCGX Sharpe Ratio Rank: 72
FBCGX Sortino Ratio Rank: 60
FBCGX Omega Ratio Rank: 60
FBCGX Calmar Ratio Rank: 79
FBCGX Martin Ratio Rank: 81

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.

MIGNX vs. FBCGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Massachusetts Investors Growth Stock Fund Class R6 (MIGNX) and Fidelity Blue Chip Growth K6 Fund (FBCGX). 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.

	MIGNX	FBCGX	Difference
Sharpe ratio: Return per unit of total volatility	0.57	2.27	-1.70
Sortino ratio: Return per unit of downside risk	0.86	2.95	-2.09
Omega ratio: Gain probability vs. loss probability	1.11	1.39	-0.29
Calmar ratio: Return relative to maximum drawdown	0.55	3.42	-2.87
Martin ratio: Return relative to average drawdown	1.77	13.95	-12.17

MIGNX vs. FBCGX - Sharpe Ratio Comparison

The current MIGNX Sharpe Ratio is 0.57, which is lower than the FBCGX Sharpe Ratio of 2.27. The chart below compares the historical Sharpe Ratios of MIGNX and FBCGX, 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

MIGNX vs. FBCGX - Drawdown Comparison

The maximum MIGNX drawdown since its inception was -32.40%, smaller than the maximum FBCGX drawdown of -42.55%. Use the drawdown chart below to compare losses from any high point for MIGNX and FBCGX.

Drawdown Indicators

	MIGNX	FBCGX	Difference
Max Drawdown Largest peak-to-trough decline	-32.40%	-42.55%	+10.15%
Max Drawdown (1Y) Largest decline over 1 year	-13.68%	-12.64%	-1.04%
Max Drawdown (3Y) Largest decline over 3 years	-18.63%	-26.83%	+8.20%
Max Drawdown (5Y) Largest decline over 5 years	-26.48%	-42.55%	+16.07%
Max Drawdown (10Y) Largest decline over 10 years	-32.40%	—	—
Current Drawdown Current decline from peak	-4.87%	-0.32%	-4.55%
Average Drawdown Average peak-to-trough decline	-3.89%	-8.86%	+4.97%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.20%	3.09%	+1.11%

Volatility

MIGNX vs. FBCGX - Volatility Comparison

The current volatility for MFS Massachusetts Investors Growth Stock Fund Class R6 (MIGNX) is 4.89%, while Fidelity Blue Chip Growth K6 Fund (FBCGX) has a volatility of 8.16%. This indicates that MIGNX experiences smaller price fluctuations and is considered to be less risky than FBCGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MIGNX	FBCGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.89%	8.16%	-3.27%
Volatility (6M) Calculated over the trailing 6-month period	10.61%	14.95%	-4.34%
Volatility (1Y) Calculated over the trailing 1-year period	13.09%	19.06%	-5.97%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.60%	25.18%	-7.58%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.24%	24.93%	-6.69%

MIGNX vs. FBCGX - Expense Ratio Comparison

MIGNX has a 0.37% expense ratio, which is lower than FBCGX's 0.45% expense ratio.

Dividends

MIGNX vs. FBCGX - Dividend Comparison

MIGNX's dividend yield for the trailing twelve months is around 11.48%, more than FBCGX's 0.82% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FBCGX Fidelity Blue Chip Growth K6 Fund	0.82%	0.97%	0.62%	0.26%	0.12%	6.71%	1.26%	0.28%	0.46%	0.13%	0.00%	0.00%
MIGNX MFS Massachusetts Investors Growth Stock Fund Class R6	11.48%	11.15%	16.98%	4.25%	4.67%	10.36%	7.48%	7.46%	10.83%	7.02%	4.99%	6.73%

Frequently Asked Questions

Can I hold both MIGNX and FBCGX in my portfolio?

MIGNX and FBCGX 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, MIGNX or FBCGX?

FBCGX has higher volatility (8.16%) compared to MIGNX (4.89%). In terms of maximum drawdown, MIGNX dropped -32.40% vs FBCGX's -42.55%.

Which has better risk-adjusted returns?

FBCGX currently has the higher Sharpe Ratio (2.27 vs 0.57), 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.