FISGX vs. TGFRX

Last updated Jun 5, 2026

FISGX (Nuveen Mid Cap Growth Opportunities Fund) and TGFRX (Tanaka Growth Fund) are both Mid Cap Growth Equities funds. Over the past 10 years, FISGX returned 13.57%/yr vs 15.44%/yr for TGFRX. A 0.80 correlation means they provide meaningful diversification when combined. FISGX charges 0.92%/yr vs 2.19%/yr for TGFRX.

Performance

FISGX vs. TGFRX - Performance Comparison

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

Returns By Period

The year-to-date returns for both investments are quite close, with FISGX having a 15.35% return and TGFRX slightly higher at 15.90%. Over the past 10 years, FISGX has underperformed TGFRX with an annualized return of 13.57%, while TGFRX has yielded a comparatively higher 15.44% annualized return.

FISGX

• 1D: -0.51%
• 1M: 2.46%
• YTD: 15.35%
• 6M: 13.36%
• 1Y: 27.88%
• 3Y*: 15.45%
• 5Y*: 4.40%
• 10Y*: 13.57%

TGFRX

• 1D: -2.63%
• 1M: 0.58%
• YTD: 15.90%
• 6M: 8.30%
• 1Y: 56.86%
• 3Y*: 34.48%
• 5Y*: 15.42%
• 10Y*: 15.44%

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

FISGX vs. TGFRX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FISGX Nuveen Mid Cap Growth Opportunities Fund	15.35%	7.83%	13.65%	20.26%	-30.11%	5.01%	46.58%	66.58%	-9.33%	24.98%
TGFRX Tanaka Growth Fund	15.90%	39.56%	17.98%	50.24%	-22.62%	26.54%	50.87%	18.78%	-25.18%	7.28%

Correlation

The correlation between FISGX and TGFRX is 0.72, 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	0.72
Correlation (3Y) Calculated over the trailing 3-year period	0.75
Correlation (5Y) Calculated over the trailing 5-year period	0.79
Correlation (10Y) Calculated over the trailing 10-year period	0.76
Correlation (All Time) Calculated using the full available price history since Jan 5, 1999	0.80

The correlation between FISGX and TGFRX has been stable across timeframes, ranging from 0.72 to 0.80 - a consistent structural relationship.

Return for Risk

FISGX vs. TGFRX — Risk / Return Rank

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

FISGX

FISGX Risk / Return Rank: 33
FISGX Sharpe Ratio Rank: 28
FISGX Sortino Ratio Rank: 27
FISGX Omega Ratio Rank: 25
FISGX Calmar Ratio Rank: 43
FISGX Martin Ratio Rank: 45

TGFRX

TGFRX Risk / Return Rank: 49
TGFRX Sharpe Ratio Rank: 46
TGFRX Sortino Ratio Rank: 39
TGFRX Omega Ratio Rank: 38
TGFRX Calmar Ratio Rank: 80
TGFRX Martin Ratio Rank: 44

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. TGFRX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Nuveen Mid Cap Growth Opportunities Fund (FISGX) and Tanaka Growth Fund (TGFRX). 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	TGFRX	Difference
Sharpe ratio: Return per unit of total volatility	1.47	1.96	-0.49
Sortino ratio: Return per unit of downside risk	2.13	2.58	-0.45
Omega ratio: Gain probability vs. loss probability	1.25	1.32	-0.07
Calmar ratio: Return relative to maximum drawdown	2.44	3.59	-1.15
Martin ratio: Return relative to average drawdown	9.23	9.19	+0.04
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. TGFRX - Sharpe Ratio Comparison

The current FISGX Sharpe Ratio is 1.47, which is comparable to the TGFRX Sharpe Ratio of 1.96. The chart below compares the historical Sharpe Ratios of FISGX and TGFRX, 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	TGFRX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.47	1.96	-0.49
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.19	0.25	-0.06
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.57	0.33	+0.24
Sharpe Ratio (All Time) Calculated using the full available price history	0.51	0.23	+0.29

Drawdowns

FISGX vs. TGFRX - Drawdown Comparison

The maximum FISGX drawdown since its inception was -57.51%, smaller than the maximum TGFRX drawdown of -74.43%. Use the drawdown chart below to compare losses from any high point for FISGX and TGFRX.

Drawdown Indicators

	FISGX	TGFRX	Difference
Max Drawdown Largest peak-to-trough decline	-57.51%	-74.43%	+16.92%
Max Drawdown (1Y) Largest decline over 1 year	-11.60%	-16.01%	+4.41%
Max Drawdown (3Y) Largest decline over 3 years	-28.16%	-61.68%	+33.52%
Max Drawdown (5Y) Largest decline over 5 years	-43.30%	-61.68%	+18.38%
Max Drawdown (10Y) Largest decline over 10 years	-43.30%	-61.68%	+18.38%
Current Drawdown Current decline from peak	-0.51%	-28.72%	+28.21%
Average Drawdown Average peak-to-trough decline	-9.86%	-29.60%	+19.74%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.05%	6.24%	-3.19%

Volatility

FISGX vs. TGFRX - Volatility Comparison

The current volatility for Nuveen Mid Cap Growth Opportunities Fund (FISGX) is 6.50%, while Tanaka Growth Fund (TGFRX) has a volatility of 9.14%. This indicates that FISGX experiences smaller price fluctuations and is considered to be less risky than TGFRX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FISGX	TGFRX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.50%	9.14%	-2.64%
Volatility (6M) Calculated over the trailing 6-month period	15.04%	22.55%	-7.51%
Volatility (1Y) Calculated over the trailing 1-year period	19.27%	29.39%	-10.12%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.45%	62.01%	-38.56%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.00%	47.36%	-23.36%

FISGX vs. TGFRX - Expense Ratio Comparison

FISGX has a 0.92% expense ratio, which is lower than TGFRX's 2.19% expense ratio.

Dividends

FISGX vs. TGFRX - Dividend Comparison

FISGX's dividend yield for the trailing twelve months is around 7.24%, less than TGFRX's 11.23% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FISGX Nuveen Mid Cap Growth Opportunities Fund	7.24%	8.35%	0.00%	0.00%	0.00%	23.94%	9.97%	38.61%	19.12%	17.17%	4.01%	7.82%
TGFRX Tanaka Growth Fund	11.23%	13.02%	6.89%	0.00%	0.11%	7.44%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FISGX and TGFRX in my portfolio?

FISGX and TGFRX have a correlation of 0.72, 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 TGFRX?

TGFRX has higher volatility (9.14%) compared to FISGX (6.50%). In terms of maximum drawdown, FISGX dropped -57.51% vs TGFRX's -74.43%.

Which has better risk-adjusted returns?

TGFRX currently has the higher Sharpe Ratio (1.96 vs 1.47), 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.