SUNBX vs. PMOTX

Last updated Jun 5, 2026

SUNBX (Spectrum Unconstrained Fund) and PMOTX (Putnam Mortgage Opportunities Fund) are both Nontraditional Bonds funds. Over the past 5 years, SUNBX returned 3.53%/yr vs 4.64%/yr for PMOTX. At a 0.06 correlation, their price movements are largely independent. SUNBX charges 2.43%/yr vs 0.47%/yr for PMOTX.

Performance

SUNBX vs. PMOTX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Spectrum Unconstrained Fund (SUNBX) and Putnam Mortgage Opportunities Fund (PMOTX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SUNBX achieves a 2.07% return, which is significantly lower than PMOTX's 4.69% return.

SUNBX

• 1D: -0.25%
• 1M: 2.23%
• YTD: 2.07%
• 6M: 3.09%
• 1Y: 8.19%
• 3Y*: 6.70%
• 5Y*: 3.53%
• 10Y*: —

PMOTX

• 1D: 0.00%
• 1M: 1.48%
• YTD: 4.69%
• 6M: 3.52%
• 1Y: 6.18%
• 3Y*: 8.35%
• 5Y*: 4.64%
• 10Y*: 4.31%

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

SUNBX vs. PMOTX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
SUNBX Spectrum Unconstrained Fund	2.07%	8.31%	1.35%	10.83%	-8.55%	6.12%
PMOTX Putnam Mortgage Opportunities Fund	4.69%	3.83%	10.08%	6.71%	4.33%	-5.54%

Correlation

The correlation between SUNBX and PMOTX is -0.02, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.02
Correlation (3Y) Calculated over the trailing 3-year period	-0.01
Correlation (5Y) Calculated over the trailing 5-year period	0.07
Correlation (All Time) Calculated using the full available price history since Apr 19, 2021	0.06

Return for Risk

SUNBX vs. PMOTX — Risk / Return Rank

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

SUNBX

SUNBX Risk / Return Rank: 44
SUNBX Sharpe Ratio Rank: 49
SUNBX Sortino Ratio Rank: 45
SUNBX Omega Ratio Rank: 64
SUNBX Calmar Ratio Rank: 36
SUNBX Martin Ratio Rank: 23

PMOTX

PMOTX Risk / Return Rank: 67
PMOTX Sharpe Ratio Rank: 50
PMOTX Sortino Ratio Rank: 48
PMOTX Omega Ratio Rank: 78
PMOTX Calmar Ratio Rank: 86
PMOTX Martin Ratio Rank: 71

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.

SUNBX vs. PMOTX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Spectrum Unconstrained Fund (SUNBX) and Putnam Mortgage Opportunities Fund (PMOTX). 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.

	SUNBX	PMOTX	Difference
Sharpe ratio: Return per unit of total volatility	1.99	2.05	-0.05
Sortino ratio: Return per unit of downside risk	2.75	2.89	-0.13
Omega ratio: Gain probability vs. loss probability	1.43	1.51	-0.08
Calmar ratio: Return relative to maximum drawdown	2.17	4.07	-1.90
Martin ratio: Return relative to average drawdown	5.53	13.41	-7.88
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SUNBX vs. PMOTX - Sharpe Ratio Comparison

The current SUNBX Sharpe Ratio is 1.99, which is comparable to the PMOTX Sharpe Ratio of 2.05. The chart below compares the historical Sharpe Ratios of SUNBX and PMOTX, 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

	SUNBX	PMOTX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.99	2.05	-0.05
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.70	1.33	-0.63
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.91	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.74	0.85	-0.11

Drawdowns

SUNBX vs. PMOTX - Drawdown Comparison

The maximum SUNBX drawdown since its inception was -10.36%, smaller than the maximum PMOTX drawdown of -17.57%. Use the drawdown chart below to compare losses from any high point for SUNBX and PMOTX.

Drawdown Indicators

	SUNBX	PMOTX	Difference
Max Drawdown Largest peak-to-trough decline	-10.36%	-17.57%	+7.21%
Max Drawdown (1Y) Largest decline over 1 year	-3.84%	-1.56%	-2.28%
Max Drawdown (3Y) Largest decline over 3 years	-3.84%	-1.77%	-2.07%
Max Drawdown (5Y) Largest decline over 5 years	-10.36%	-6.20%	-4.16%
Max Drawdown (10Y) Largest decline over 10 years	—	-17.57%	—
Current Drawdown Current decline from peak	-0.44%	-0.00%	-0.44%
Average Drawdown Average peak-to-trough decline	-3.58%	-2.99%	-0.59%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.50%	0.47%	+1.03%

Volatility

SUNBX vs. PMOTX - Volatility Comparison

Spectrum Unconstrained Fund (SUNBX) has a higher volatility of 1.48% compared to Putnam Mortgage Opportunities Fund (PMOTX) at 1.15%. This indicates that SUNBX's price experiences larger fluctuations and is considered to be riskier than PMOTX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SUNBX	PMOTX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.48%	1.15%	+0.33%
Volatility (6M) Calculated over the trailing 6-month period	3.42%	2.55%	+0.87%
Volatility (1Y) Calculated over the trailing 1-year period	4.19%	3.10%	+1.09%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.06%	3.52%	+1.54%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.01%	4.73%	+0.28%

SUNBX vs. PMOTX - Expense Ratio Comparison

SUNBX has a 2.43% expense ratio, which is higher than PMOTX's 0.47% expense ratio.

Dividends

SUNBX vs. PMOTX - Dividend Comparison

SUNBX's dividend yield for the trailing twelve months is around 2.78%, less than PMOTX's 3.71% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
PMOTX Putnam Mortgage Opportunities Fund	3.71%	4.26%	6.11%	7.73%	5.17%	4.72%	3.64%	6.83%	5.94%	0.77%
SUNBX Spectrum Unconstrained Fund	2.78%	2.84%	3.75%	2.81%	0.00%	8.52%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both SUNBX and PMOTX in my portfolio?

SUNBX and PMOTX have a correlation of -0.02, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SUNBX or PMOTX?

SUNBX has higher volatility (1.48%) compared to PMOTX (1.15%). In terms of maximum drawdown, SUNBX dropped -10.36% vs PMOTX's -17.57%.

Which has better risk-adjusted returns?

PMOTX currently has the higher Sharpe Ratio (2.05 vs 1.99), 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.