FISGX vs. IMIDX

Last updated Jun 4, 2026

FISGX (Nuveen Mid Cap Growth Opportunities Fund) and IMIDX (Congress Mid Cap Growth Fund) are both Mid Cap Growth Equities funds. Over the past 10 years, FISGX returned 13.63%/yr vs 11.93%/yr for IMIDX. Their correlation of 0.92 suggests significant overlap in exposure. FISGX charges 0.92%/yr vs 0.79%/yr for IMIDX.

Performance

FISGX vs. IMIDX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Nuveen Mid Cap Growth Opportunities Fund (FISGX) and Congress Mid Cap Growth Fund (IMIDX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both stocks are quite close, with FISGX having a 15.94% return and IMIDX slightly lower at 15.44%. Over the past 10 years, FISGX has outperformed IMIDX with an annualized return of 13.63%, while IMIDX has yielded a comparatively lower 11.93% annualized return.

FISGX

• 1D: 1.23%
• 1M: 5.71%
• YTD: 15.94%
• 6M: 14.93%
• 1Y: 28.70%
• 3Y*: 15.65%
• 5Y*: 4.77%
• 10Y*: 13.63%

IMIDX

• 1D: 0.82%
• 1M: 1.15%
• YTD: 15.44%
• 6M: 13.45%
• 1Y: 14.96%
• 3Y*: 12.35%
• 5Y*: 5.29%
• 10Y*: 11.93%

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

FISGX vs. IMIDX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FISGX Nuveen Mid Cap Growth Opportunities Fund	15.94%	7.83%	13.65%	20.26%	-30.11%	5.01%	46.58%	66.58%	-9.33%	24.98%
IMIDX Congress Mid Cap Growth Fund	15.44%	-4.88%	18.11%	16.29%	-26.94%	29.42%	30.57%	42.36%	-4.98%	15.91%

Correlation

The correlation between FISGX and IMIDX is 0.87, 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	0.87
Correlation (3Y) Calculated over the trailing 3-year period	0.89
Correlation (5Y) Calculated over the trailing 5-year period	0.91
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Nov 2, 2012	0.92

The correlation between FISGX and IMIDX has been stable across timeframes, ranging from 0.87 to 0.92 - a consistent structural relationship.

Return for Risk

FISGX vs. IMIDX — Risk / Return Rank

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

FISGX

FISGX Risk / Return Rank: 36
FISGX Sharpe Ratio Rank: 30
FISGX Sortino Ratio Rank: 30
FISGX Omega Ratio Rank: 26
FISGX Calmar Ratio Rank: 48
FISGX Martin Ratio Rank: 48

IMIDX

IMIDX Risk / Return Rank: 11
IMIDX Sharpe Ratio Rank: 10
IMIDX Sortino Ratio Rank: 11
IMIDX Omega Ratio Rank: 10
IMIDX Calmar Ratio Rank: 13
IMIDX Martin Ratio Rank: 11

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.

FISGX vs. IMIDX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Nuveen Mid Cap Growth Opportunities Fund (FISGX) and Congress Mid Cap Growth Fund (IMIDX). 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.

	FISGX	IMIDX	Difference
Sharpe ratio: Return per unit of total volatility	1.59	0.83	+0.75
Sortino ratio: Return per unit of downside risk	2.27	1.30	+0.97
Omega ratio: Gain probability vs. loss probability	1.27	1.15	+0.12
Calmar ratio: Return relative to maximum drawdown	2.63	1.26	+1.37
Martin ratio: Return relative to average drawdown	9.96	3.34	+6.62
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FISGX vs. IMIDX - Sharpe Ratio Comparison

The current FISGX Sharpe Ratio is 1.59, which is higher than the IMIDX Sharpe Ratio of 0.83. The chart below compares the historical Sharpe Ratios of FISGX and IMIDX, 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

	FISGX	IMIDX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.59	0.83	+0.75
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.20	0.25	-0.04
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.57	0.57	0.00
Sharpe Ratio (All Time) Calculated using the full available price history	0.51	0.66	-0.14

Drawdowns

FISGX vs. IMIDX - Drawdown Comparison

The maximum FISGX drawdown since its inception was -57.51%, which is greater than IMIDX's maximum drawdown of -35.15%. Use the drawdown chart below to compare losses from any high point for FISGX and IMIDX.

Drawdown Indicators

	FISGX	IMIDX	Difference
Max Drawdown Largest peak-to-trough decline	-57.51%	-35.15%	-22.36%
Max Drawdown (1Y) Largest decline over 1 year	-11.60%	-12.10%	+0.50%
Max Drawdown (3Y) Largest decline over 3 years	-28.16%	-23.49%	-4.67%
Max Drawdown (5Y) Largest decline over 5 years	-43.30%	-34.88%	-8.42%
Max Drawdown (10Y) Largest decline over 10 years	-43.30%	-35.15%	-8.15%
Current Drawdown Current decline from peak	0.00%	-2.39%	+2.39%
Average Drawdown Average peak-to-trough decline	-9.86%	-7.20%	-2.66%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.05%	4.55%	-1.50%

Volatility

FISGX vs. IMIDX - Volatility Comparison

Nuveen Mid Cap Growth Opportunities Fund (FISGX) has a higher volatility of 6.47% compared to Congress Mid Cap Growth Fund (IMIDX) at 6.02%. This indicates that FISGX's price experiences larger fluctuations and is considered to be riskier than IMIDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FISGX	IMIDX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.47%	6.02%	+0.45%
Volatility (6M) Calculated over the trailing 6-month period	15.04%	14.95%	+0.09%
Volatility (1Y) Calculated over the trailing 1-year period	19.27%	18.28%	+0.99%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.45%	21.39%	+2.06%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.00%	21.12%	+2.88%

FISGX vs. IMIDX - Expense Ratio Comparison

FISGX has a 0.92% expense ratio, which is higher than IMIDX's 0.79% expense ratio.

Dividends

FISGX vs. IMIDX - Dividend Comparison

FISGX's dividend yield for the trailing twelve months is around 7.20%, less than IMIDX's 11.50% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FISGX Nuveen Mid Cap Growth Opportunities Fund	7.20%	8.35%	0.00%	0.00%	0.00%	23.94%	9.97%	38.61%	19.12%	17.17%	4.01%	7.82%
IMIDX Congress Mid Cap Growth Fund	11.50%	13.27%	27.75%	6.27%	5.80%	12.29%	2.06%	10.80%	2.99%	0.04%	1.11%	0.80%

Frequently Asked Questions

Can I hold both FISGX and IMIDX in my portfolio?

FISGX and IMIDX have a correlation of 0.87, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FISGX or IMIDX?

FISGX has higher volatility (6.47%) compared to IMIDX (6.02%). In terms of maximum drawdown, FISGX dropped -57.51% vs IMIDX's -35.15%.

Which has better risk-adjusted returns?

FISGX currently has the higher Sharpe Ratio (1.59 vs 0.83), 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.