ATPYX vs. COTFX

Last updated Jun 24, 2026

ATPYX (Aquila High Income Fund) and COTFX (Aquila Tax-Free Fund of Colorado) are both mutual funds - ATPYX is a High Yield Bonds fund managed by Aquila, while COTFX is a Municipal Bonds fund managed by Aquila. At a 0.43 correlation, their price movements are largely independent. ATPYX charges 0.98%/yr vs 0.72%/yr for COTFX.

Performance

ATPYX vs. COTFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Aquila High Income Fund (ATPYX) and Aquila Tax-Free Fund of Colorado (COTFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

ATPYX

• 1D: -0.12%
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

COTFX

• 1D: 0.00%
• 1M: 1.42%
• YTD: 1.81%
• 6M: 2.21%
• 1Y: 6.69%
• 3Y*: 2.88%
• 5Y*: 0.53%
• 10Y*: 1.12%

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

ATPYX vs. COTFX - Yearly Performance Comparison

	2026 (YTD)
ATPYX Aquila High Income Fund	0.24%
COTFX Aquila Tax-Free Fund of Colorado	0.80%

Correlation

The correlation between ATPYX and COTFX is 0.43, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since May 28, 2026	0.43

Return for Risk

ATPYX vs. COTFX — Risk / Return Rank

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

ATPYX

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

COTFX

COTFX Risk / Return Rank: 73
COTFX Sharpe Ratio Rank: 91
COTFX Sortino Ratio Rank: 94
COTFX Omega Ratio Rank: 95
COTFX Calmar Ratio Rank: 43
COTFX Martin Ratio Rank: 40

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.

ATPYX vs. COTFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Aquila High Income Fund (ATPYX) and Aquila Tax-Free Fund of Colorado (COTFX). 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.

	ATPYX	COTFX	Difference
Sharpe ratio: Return per unit of total volatility	—	2.82	—
Sortino ratio: Return per unit of downside risk	—	4.51	—
Omega ratio: Gain probability vs. loss probability	—	1.73	—
Calmar ratio: Return relative to maximum drawdown	—	2.39	—
Martin ratio: Return relative to average drawdown	—	8.16	—

Drawdowns

ATPYX vs. COTFX - Drawdown Comparison

The maximum ATPYX drawdown since its inception was -0.49%, smaller than the maximum COTFX drawdown of -10.44%. Use the drawdown chart below to compare losses from any high point for ATPYX and COTFX.

Drawdown Indicators

	ATPYX	COTFX	Difference
Max Drawdown Largest peak-to-trough decline	-0.49%	-10.44%	+9.95%
Max Drawdown (1Y) Largest decline over 1 year	—	-2.83%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-4.55%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-10.36%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-10.44%	—
Current Drawdown Current decline from peak	-0.37%	-0.48%	+0.11%
Average Drawdown Average peak-to-trough decline	-0.24%	-1.52%	+1.28%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.82%	—

Volatility

Volatility by Period

	ATPYX	COTFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.67%	—
Volatility (6M) Calculated over the trailing 6-month period	—	1.85%	—
Volatility (1Y) Calculated over the trailing 1-year period	2.99%	2.40%	+0.59%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.99%	2.91%	+0.08%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.99%	3.00%	-0.01%

ATPYX vs. COTFX - Expense Ratio Comparison

ATPYX has a 0.98% expense ratio, which is higher than COTFX's 0.72% expense ratio.

Dividends

ATPYX vs. COTFX - Dividend Comparison

ATPYX's dividend yield for the trailing twelve months is around 0.49%, less than COTFX's 3.32% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ATPYX Aquila High Income Fund	0.49%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
COTFX Aquila Tax-Free Fund of Colorado	3.32%	3.28%	2.42%	1.99%	1.32%	1.42%	1.75%	2.46%	2.38%	2.52%	2.68%	2.94%

Frequently Asked Questions

Can I hold both ATPYX and COTFX in my portfolio?

ATPYX and COTFX have a correlation of 0.43, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.