FSSNX vs. TMCGX

Last updated Jun 9, 2026

FSSNX (Fidelity Small Cap Index Fund) and TMCGX (Thrivent Mid Cap Growth Fund) are both mutual funds - FSSNX is a Small Cap Blend Equities fund tracking the Russell 2000 Index, while TMCGX is a Mid Cap Growth Equities fund managed by Thrivent. Over the past 5 years, FSSNX returned 5.93%/yr vs 1.99%/yr for TMCGX. Their correlation of 0.87 suggests significant overlap in exposure. FSSNX charges 0.03%/yr vs 0.90%/yr for TMCGX.

Performance

FSSNX vs. TMCGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Small Cap Index Fund (FSSNX) and Thrivent Mid Cap Growth Fund (TMCGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FSSNX achieves a 14.74% return, which is significantly higher than TMCGX's 6.81% return.

FSSNX

• 1D: -3.48%
• 1M: -0.87%
• YTD: 14.74%
• 6M: 13.12%
• 1Y: 34.70%
• 3Y*: 16.90%
• 5Y*: 5.93%
• 10Y*: 10.69%

TMCGX

• 1D: -3.26%
• 1M: 1.12%
• YTD: 6.81%
• 6M: 4.55%
• 1Y: 10.05%
• 3Y*: 8.95%
• 5Y*: 1.99%
• 10Y*: —

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

FSSNX vs. TMCGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
FSSNX Fidelity Small Cap Index Fund	14.74%	12.94%	11.71%	17.11%	-20.28%	14.70%	33.45%
TMCGX Thrivent Mid Cap Growth Fund	6.81%	2.48%	10.20%	16.94%	-28.27%	11.39%	53.73%

Correlation

The correlation between FSSNX and TMCGX is 0.84, 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	0.84
Correlation (3Y) Calculated over the trailing 3-year period	0.86
Correlation (5Y) Calculated over the trailing 5-year period	0.88
Correlation (All Time) Calculated using the full available price history since Feb 28, 2020	0.87

The correlation between FSSNX and TMCGX has been stable across timeframes, ranging from 0.84 to 0.88 - a consistent structural relationship.

Return for Risk

FSSNX vs. TMCGX — Risk / Return Rank

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

FSSNX

FSSNX Risk / Return Rank: 53
FSSNX Sharpe Ratio Rank: 45
FSSNX Sortino Ratio Rank: 42
FSSNX Omega Ratio Rank: 38
FSSNX Calmar Ratio Rank: 77
FSSNX Martin Ratio Rank: 63

TMCGX

TMCGX Risk / Return Rank: 10
TMCGX Sharpe Ratio Rank: 9
TMCGX Sortino Ratio Rank: 10
TMCGX Omega Ratio Rank: 9
TMCGX Calmar Ratio Rank: 10
TMCGX Martin Ratio Rank: 10

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.

FSSNX vs. TMCGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Small Cap Index Fund (FSSNX) and Thrivent Mid Cap Growth Fund (TMCGX). 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.

	FSSNX	TMCGX	Difference
Sharpe ratio: Return per unit of total volatility	1.90	0.62	+1.29
Sortino ratio: Return per unit of downside risk	2.63	0.97	+1.66
Omega ratio: Gain probability vs. loss probability	1.31	1.12	+0.20
Calmar ratio: Return relative to maximum drawdown	3.38	0.73	+2.64
Martin ratio: Return relative to average drawdown	11.95	2.41	+9.54
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FSSNX vs. TMCGX - Sharpe Ratio Comparison

The current FSSNX Sharpe Ratio is 1.90, which is higher than the TMCGX Sharpe Ratio of 0.62. The chart below compares the historical Sharpe Ratios of FSSNX and TMCGX, 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

	FSSNX	TMCGX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.90	0.62	+1.29
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.26	0.09	+0.17
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.46	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.53	0.38	+0.15

Drawdowns

FSSNX vs. TMCGX - Drawdown Comparison

The maximum FSSNX drawdown since its inception was -41.72%, which is greater than TMCGX's maximum drawdown of -39.66%. Use the drawdown chart below to compare losses from any high point for FSSNX and TMCGX.

Drawdown Indicators

	FSSNX	TMCGX	Difference
Max Drawdown Largest peak-to-trough decline	-41.72%	-39.66%	-2.06%
Max Drawdown (1Y) Largest decline over 1 year	-11.00%	-14.58%	+3.58%
Max Drawdown (3Y) Largest decline over 3 years	-27.45%	-25.28%	-2.17%
Max Drawdown (5Y) Largest decline over 5 years	-31.87%	-39.66%	+7.79%
Max Drawdown (10Y) Largest decline over 10 years	-41.72%	—	—
Current Drawdown Current decline from peak	-3.48%	-6.21%	+2.73%
Average Drawdown Average peak-to-trough decline	-8.29%	-15.92%	+7.63%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.10%	4.42%	-1.32%

Volatility

FSSNX vs. TMCGX - Volatility Comparison

Fidelity Small Cap Index Fund (FSSNX) has a higher volatility of 6.59% compared to Thrivent Mid Cap Growth Fund (TMCGX) at 5.28%. This indicates that FSSNX's price experiences larger fluctuations and is considered to be riskier than TMCGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FSSNX	TMCGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.59%	5.28%	+1.31%
Volatility (6M) Calculated over the trailing 6-month period	14.03%	14.13%	-0.10%
Volatility (1Y) Calculated over the trailing 1-year period	19.52%	17.32%	+2.20%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.64%	22.28%	+0.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.47%	24.20%	-0.73%

FSSNX vs. TMCGX - Expense Ratio Comparison

FSSNX has a 0.03% expense ratio, which is lower than TMCGX's 0.90% expense ratio.

Dividends

FSSNX vs. TMCGX - Dividend Comparison

FSSNX's dividend yield for the trailing twelve months is around 0.94%, while TMCGX has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSSNX Fidelity Small Cap Index Fund	0.94%	1.08%	1.04%	1.43%	1.26%	3.92%	0.94%	2.96%	4.94%	3.37%	2.27%	2.66%
TMCGX Thrivent Mid Cap Growth Fund	0.00%	0.00%	0.00%	0.00%	0.00%	3.13%	2.82%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FSSNX and TMCGX in my portfolio?

FSSNX and TMCGX have a correlation of 0.84, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FSSNX or TMCGX?

FSSNX has higher volatility (6.59%) compared to TMCGX (5.28%). In terms of maximum drawdown, FSSNX dropped -41.72% vs TMCGX's -39.66%.

Which has better risk-adjusted returns?

FSSNX currently has the higher Sharpe Ratio (1.90 vs 0.62), 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.