LMGAX vs. FSMAX

Last updated Jun 4, 2026

LMGAX (Lord Abbett Growth Opportunities Fund) and FSMAX (Fidelity Extended Market Index Fund) are both Mid Cap Growth Equities funds. Over the past 10 years, LMGAX returned 12.07%/yr vs 12.17%/yr for FSMAX. Their correlation of 0.90 suggests significant overlap in exposure. LMGAX charges 1.06%/yr vs 0.04%/yr for FSMAX.

Performance

LMGAX vs. FSMAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Lord Abbett Growth Opportunities Fund (LMGAX) and Fidelity Extended Market Index Fund (FSMAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, LMGAX achieves a 16.99% return, which is significantly higher than FSMAX's 14.89% return. Both investments have delivered pretty close results over the past 10 years, with LMGAX having a 12.07% annualized return and FSMAX not far ahead at 12.17%.

LMGAX

• 1D: 0.45%
• 1M: 5.69%
• YTD: 16.99%
• 6M: 14.29%
• 1Y: 26.17%
• 3Y*: 21.39%
• 5Y*: 7.08%
• 10Y*: 12.07%

FSMAX

• 1D: 1.07%
• 1M: 5.80%
• YTD: 14.89%
• 6M: 13.61%
• 1Y: 30.08%
• 3Y*: 20.13%
• 5Y*: 6.91%
• 10Y*: 12.17%

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

LMGAX vs. FSMAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
LMGAX Lord Abbett Growth Opportunities Fund	16.99%	13.38%	30.74%	10.80%	-32.59%	6.76%	40.17%	36.75%	-3.35%	22.94%
FSMAX Fidelity Extended Market Index Fund	14.89%	11.40%	16.99%	25.36%	-26.44%	12.41%	32.28%	28.01%	-9.44%	18.04%

Correlation

The correlation between LMGAX and FSMAX is 0.82, 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	0.82
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	0.88
Correlation (All Time) Calculated using the full available price history since Sep 9, 2011	0.90

The correlation between LMGAX and FSMAX has been stable across timeframes, ranging from 0.82 to 0.90 - a consistent structural relationship.

Return for Risk

LMGAX vs. FSMAX — Risk / Return Rank

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

LMGAX

LMGAX Risk / Return Rank: 17
LMGAX Sharpe Ratio Rank: 16
LMGAX Sortino Ratio Rank: 15
LMGAX Omega Ratio Rank: 16
LMGAX Calmar Ratio Rank: 21
LMGAX Martin Ratio Rank: 18

FSMAX

FSMAX Risk / Return Rank: 47
FSMAX Sharpe Ratio Rank: 41
FSMAX Sortino Ratio Rank: 39
FSMAX Omega Ratio Rank: 37
FSMAX Calmar Ratio Rank: 66
FSMAX Martin Ratio Rank: 54

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.

LMGAX vs. FSMAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Lord Abbett Growth Opportunities Fund (LMGAX) and Fidelity Extended Market Index Fund (FSMAX). 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.

	LMGAX	FSMAX	Difference
Sharpe ratio: Return per unit of total volatility	1.16	1.87	-0.71
Sortino ratio: Return per unit of downside risk	1.64	2.60	-0.96
Omega ratio: Gain probability vs. loss probability	1.21	1.32	-0.11
Calmar ratio: Return relative to maximum drawdown	1.69	3.12	-1.44
Martin ratio: Return relative to average drawdown	4.84	11.05	-6.20
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

LMGAX vs. FSMAX - Sharpe Ratio Comparison

The current LMGAX Sharpe Ratio is 1.16, which is lower than the FSMAX Sharpe Ratio of 1.87. The chart below compares the historical Sharpe Ratios of LMGAX and FSMAX, 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

	LMGAX	FSMAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.16	1.87	-0.71
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.27	0.31	-0.04
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.51	0.40	+0.11
Sharpe Ratio (All Time) Calculated using the full available price history	0.47	0.46	0.00

Drawdowns

LMGAX vs. FSMAX - Drawdown Comparison

The maximum LMGAX drawdown since its inception was -49.96%, roughly equal to the maximum FSMAX drawdown of -50.55%. Use the drawdown chart below to compare losses from any high point for LMGAX and FSMAX.

Drawdown Indicators

	LMGAX	FSMAX	Difference
Max Drawdown Largest peak-to-trough decline	-49.96%	-50.55%	+0.59%
Max Drawdown (1Y) Largest decline over 1 year	-15.99%	-10.26%	-5.73%
Max Drawdown (3Y) Largest decline over 3 years	-31.19%	-26.82%	-4.37%
Max Drawdown (5Y) Largest decline over 5 years	-42.72%	-36.31%	-6.41%
Max Drawdown (10Y) Largest decline over 10 years	-42.72%	-50.55%	+7.83%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-12.79%	-12.17%	-0.62%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.55%	2.90%	+2.65%

Volatility

LMGAX vs. FSMAX - Volatility Comparison

Lord Abbett Growth Opportunities Fund (LMGAX) has a higher volatility of 6.96% compared to Fidelity Extended Market Index Fund (FSMAX) at 4.70%. This indicates that LMGAX's price experiences larger fluctuations and is considered to be riskier than FSMAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LMGAX	FSMAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.96%	4.70%	+2.26%
Volatility (6M) Calculated over the trailing 6-month period	18.15%	12.46%	+5.69%
Volatility (1Y) Calculated over the trailing 1-year period	23.31%	17.17%	+6.14%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.91%	22.33%	+3.58%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.71%	30.24%	-6.53%

LMGAX vs. FSMAX - Expense Ratio Comparison

LMGAX has a 1.06% expense ratio, which is higher than FSMAX's 0.04% expense ratio.

Dividends

LMGAX vs. FSMAX - Dividend Comparison

LMGAX's dividend yield for the trailing twelve months is around 6.48%, more than FSMAX's 0.50% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSMAX Fidelity Extended Market Index Fund	0.50%	0.57%	0.48%	1.17%	1.90%	7.49%	2.14%	4.30%	6.09%	5.44%	4.85%	6.34%
LMGAX Lord Abbett Growth Opportunities Fund	6.48%	7.59%	0.00%	0.00%	0.00%	18.94%	15.52%	5.62%	6.14%	9.04%	3.22%	13.75%

Frequently Asked Questions

Can I hold both LMGAX and FSMAX in my portfolio?

LMGAX and FSMAX have a correlation of 0.82, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, LMGAX or FSMAX?

LMGAX has higher volatility (6.96%) compared to FSMAX (4.70%). In terms of maximum drawdown, LMGAX dropped -49.96% vs FSMAX's -50.55%.

Which has better risk-adjusted returns?

FSMAX currently has the higher Sharpe Ratio (1.87 vs 1.16), 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.