FONPX vs. FOSIX

Last updated Jun 24, 2026

FONPX (Tributary Nebraska Tax-Free Fund) and FOSIX (Tributary Short-Intermediate Bond Fund) are both mutual funds - FONPX is a Municipal Bonds fund managed by Tributary Funds, while FOSIX is a Short-Term Bond fund managed by Tributary Funds. Over the past 10 years, FONPX returned 1.72%/yr vs 2.34%/yr for FOSIX. At a 0.46 correlation, their price movements are largely independent. FONPX charges 0.45%/yr vs 0.64%/yr for FOSIX.

Performance

FONPX vs. FOSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Tributary Nebraska Tax-Free Fund (FONPX) and Tributary Short-Intermediate Bond Fund (FOSIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FONPX achieves a 1.03% return, which is significantly higher than FOSIX's 0.27% return. Over the past 10 years, FONPX has underperformed FOSIX with an annualized return of 1.72%, while FOSIX has yielded a comparatively higher 2.34% annualized return.

FONPX

• 1D: -0.11%
• 1M: 1.22%
• YTD: 1.03%
• 6M: 1.47%
• 1Y: 5.40%
• 3Y*: 3.37%
• 5Y*: 1.06%
• 10Y*: 1.72%

FOSIX

• 1D: -0.11%
• 1M: 0.11%
• YTD: 0.27%
• 6M: 0.71%
• 1Y: 3.21%
• 3Y*: 5.24%
• 5Y*: 2.45%
• 10Y*: 2.34%

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

FONPX vs. FOSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FONPX Tributary Nebraska Tax-Free Fund	1.03%	5.26%	0.63%	4.76%	-6.17%	0.01%	4.68%	5.69%	1.29%	3.60%
FOSIX Tributary Short-Intermediate Bond Fund	0.27%	5.86%	5.47%	5.81%	-4.44%	-0.65%	3.97%	4.35%	1.01%	2.17%

Correlation

The correlation between FONPX and FOSIX is 0.48, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.48
Correlation (3Y) Calculated over the trailing 3-year period	0.50
Correlation (5Y) Calculated over the trailing 5-year period	0.47
Correlation (10Y) Calculated over the trailing 10-year period	0.46
Correlation (All Time) Calculated using the full available price history since Jan 4, 2016	0.46

Return for Risk

FONPX vs. FOSIX — Risk / Return Rank

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

FONPX

FONPX Risk / Return Rank: 67
FONPX Sharpe Ratio Rank: 84
FONPX Sortino Ratio Rank: 88
FONPX Omega Ratio Rank: 92
FONPX Calmar Ratio Rank: 37
FONPX Martin Ratio Rank: 35

FOSIX

FOSIX Risk / Return Rank: 51
FOSIX Sharpe Ratio Rank: 39
FOSIX Sortino Ratio Rank: 60
FOSIX Omega Ratio Rank: 59
FOSIX Calmar Ratio Rank: 48
FOSIX Martin Ratio Rank: 50

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.

FONPX vs. FOSIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Tributary Nebraska Tax-Free Fund (FONPX) and Tributary Short-Intermediate Bond Fund (FOSIX). 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.

	FONPX	FOSIX	Difference
Sharpe ratio: Return per unit of total volatility	2.54	1.69	+0.85
Sortino ratio: Return per unit of downside risk	3.94	2.98	+0.96
Omega ratio: Gain probability vs. loss probability	1.64	1.39	+0.25
Calmar ratio: Return relative to maximum drawdown	2.18	2.54	-0.37
Martin ratio: Return relative to average drawdown	7.22	9.68	-2.45

FONPX vs. FOSIX - Sharpe Ratio Comparison

The current FONPX Sharpe Ratio is 2.54, which is higher than the FOSIX Sharpe Ratio of 1.69. The chart below compares the historical Sharpe Ratios of FONPX and FOSIX, 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

FONPX vs. FOSIX - Drawdown Comparison

The maximum FONPX drawdown since its inception was -10.92%, which is greater than FOSIX's maximum drawdown of -6.58%. Use the drawdown chart below to compare losses from any high point for FONPX and FOSIX.

Drawdown Indicators

	FONPX	FOSIX	Difference
Max Drawdown Largest peak-to-trough decline	-10.92%	-6.58%	-4.34%
Max Drawdown (1Y) Largest decline over 1 year	-2.54%	-1.31%	-1.23%
Max Drawdown (3Y) Largest decline over 3 years	-5.09%	-1.31%	-3.78%
Max Drawdown (5Y) Largest decline over 5 years	-10.92%	-6.57%	-4.35%
Max Drawdown (10Y) Largest decline over 10 years	-10.92%	-6.58%	-4.34%
Current Drawdown Current decline from peak	-0.69%	-0.55%	-0.14%
Average Drawdown Average peak-to-trough decline	-1.91%	-0.82%	-1.09%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.76%	0.34%	+0.42%

Volatility

FONPX vs. FOSIX - Volatility Comparison

Tributary Nebraska Tax-Free Fund (FONPX) has a higher volatility of 0.70% compared to Tributary Short-Intermediate Bond Fund (FOSIX) at 0.65%. This indicates that FONPX's price experiences larger fluctuations and is considered to be riskier than FOSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FONPX	FOSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.70%	0.65%	+0.05%
Volatility (6M) Calculated over the trailing 6-month period	1.77%	1.52%	+0.25%
Volatility (1Y) Calculated over the trailing 1-year period	2.19%	1.98%	+0.21%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.24%	2.28%	+0.96%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.30%	1.96%	+1.34%

FONPX vs. FOSIX - Expense Ratio Comparison

FONPX has a 0.45% expense ratio, which is lower than FOSIX's 0.64% expense ratio.

Dividends

FONPX vs. FOSIX - Dividend Comparison

FONPX's dividend yield for the trailing twelve months is around 2.62%, less than FOSIX's 4.20% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FONPX Tributary Nebraska Tax-Free Fund	2.62%	2.47%	2.39%	2.39%	1.81%	1.84%	1.92%	2.69%	3.36%	3.55%	3.10%	0.00%
FOSIX Tributary Short-Intermediate Bond Fund	4.20%	4.36%	4.30%	2.86%	2.30%	1.81%	2.19%	2.41%	2.20%	2.26%	2.04%	1.34%

Frequently Asked Questions

Can I hold both FONPX and FOSIX in my portfolio?

FONPX and FOSIX have a correlation of 0.48, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FONPX or FOSIX?

FONPX has higher volatility (0.70%) compared to FOSIX (0.65%). In terms of maximum drawdown, FONPX dropped -10.92% vs FOSIX's -6.58%.

Which has better risk-adjusted returns?

FONPX currently has the higher Sharpe Ratio (2.54 vs 1.69), 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.