PREF vs. PFLD

Last updated Jun 4, 2026

PREF (Principal Spectrum Preferred Secs Active ETF) and PFLD (AAM Low Duration Preferred and Income Securities ETF 144A) are both Preferred Stock/Convertible Bonds funds. PREF is actively managed, while PFLD is passively managed. Over the past 5 years, PREF returned 3.07%/yr vs 1.04%/yr for PFLD. At a 0.37 correlation, their price movements are largely independent. PREF charges 0.55%/yr vs 0.45%/yr for PFLD.

Performance

PREF vs. PFLD - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Principal Spectrum Preferred Secs Active ETF (PREF) and AAM Low Duration Preferred and Income Securities ETF 144A (PFLD). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PREF achieves a 1.65% return, which is significantly lower than PFLD's 2.69% return.

PREF

• 1D: -0.13%
• 1M: 0.52%
• YTD: 1.65%
• 6M: 2.32%
• 1Y: 6.65%
• 3Y*: 9.25%
• 5Y*: 3.07%
• 10Y*: —

PFLD

• 1D: 0.05%
• 1M: 0.74%
• YTD: 2.69%
• 6M: 2.90%
• 1Y: 6.25%
• 3Y*: 4.93%
• 5Y*: 1.04%
• 10Y*: —

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

PREF vs. PFLD - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
PREF Principal Spectrum Preferred Secs Active ETF	1.65%	7.64%	11.43%	7.36%	-11.80%	2.08%	7.52%	0.95%
PFLD AAM Low Duration Preferred and Income Securities ETF 144A	2.69%	1.44%	5.48%	8.16%	-12.73%	4.49%	5.34%	1.04%

Correlation

The correlation between PREF and PFLD is 0.29, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.29
Correlation (3Y) Calculated over the trailing 3-year period	0.33
Correlation (5Y) Calculated over the trailing 5-year period	0.39
Correlation (All Time) Calculated using the full available price history since Nov 21, 2019	0.37

The correlation between PREF and PFLD shifts across timeframes, from 0.29 (1 year) to 0.39 (5 years), reflecting how their relationship changes across market environments.

PREF vs. PFLD - Sectors Allocation Comparison

Sectors	PREF	PFLD
Financial Services	100.0%	-
Basic Materials	-	-
Communication Services	-	-
Consumer Cyclical	-	-
Consumer Defensive	-	-
Energy	-	-
Healthcare	-	-
Industrials	-	-
Real Estate	-	-
Technology	-	-
Utilities	-	100.0%

Return for Risk

PREF vs. PFLD — Risk / Return Rank

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

PREF

PREF Risk / Return Rank: 64
PREF Sharpe Ratio Rank: 64
PREF Sortino Ratio Rank: 67
PREF Omega Ratio Rank: 75
PREF Calmar Ratio Rank: 46
PREF Martin Ratio Rank: 66

PFLD

PFLD Risk / Return Rank: 60
PFLD Sharpe Ratio Rank: 54
PFLD Sortino Ratio Rank: 65
PFLD Omega Ratio Rank: 57
PFLD Calmar Ratio Rank: 57
PFLD Martin Ratio Rank: 68

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.

PREF vs. PFLD - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Principal Spectrum Preferred Secs Active ETF (PREF) and AAM Low Duration Preferred and Income Securities ETF 144A (PFLD). 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.

	PREF	PFLD	Difference
Sharpe ratio: Return per unit of total volatility	2.16	1.85	+0.31
Sortino ratio: Return per unit of downside risk	3.10	3.01	+0.09
Omega ratio: Gain probability vs. loss probability	1.45	1.35	+0.10
Calmar ratio: Return relative to maximum drawdown	2.32	2.81	-0.49
Martin ratio: Return relative to average drawdown	12.09	12.46	-0.37
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PREF vs. PFLD - Sharpe Ratio Comparison

The current PREF Sharpe Ratio is 2.16, which is comparable to the PFLD Sharpe Ratio of 1.85. The chart below compares the historical Sharpe Ratios of PREF and PFLD, 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

	PREF	PFLD	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.16	1.85	+0.31
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.63	0.14	+0.49
Sharpe Ratio (All Time) Calculated using the full available price history	0.66	0.17	+0.50

Drawdowns

PREF vs. PFLD - Drawdown Comparison

The maximum PREF drawdown since its inception was -22.99%, smaller than the maximum PFLD drawdown of -33.20%. Use the drawdown chart below to compare losses from any high point for PREF and PFLD.

Drawdown Indicators

	PREF	PFLD	Difference
Max Drawdown Largest peak-to-trough decline	-22.99%	-33.20%	+10.21%
Max Drawdown (1Y) Largest decline over 1 year	-2.88%	-2.23%	-0.65%
Max Drawdown (3Y) Largest decline over 3 years	-4.39%	-6.41%	+2.02%
Max Drawdown (5Y) Largest decline over 5 years	-16.99%	-15.51%	-1.48%
Current Drawdown Current decline from peak	-0.13%	0.00%	-0.13%
Average Drawdown Average peak-to-trough decline	-3.66%	-4.17%	+0.51%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.55%	0.50%	+0.05%

Volatility

PREF vs. PFLD - Volatility Comparison

The current volatility for Principal Spectrum Preferred Secs Active ETF (PREF) is 0.69%, while AAM Low Duration Preferred and Income Securities ETF 144A (PFLD) has a volatility of 0.84%. This indicates that PREF experiences smaller price fluctuations and is considered to be less risky than PFLD based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PREF	PFLD	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.69%	0.84%	-0.15%
Volatility (6M) Calculated over the trailing 6-month period	2.51%	2.26%	+0.25%
Volatility (1Y) Calculated over the trailing 1-year period	3.09%	3.39%	-0.30%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.87%	7.50%	-2.63%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.30%	13.38%	-7.08%

PREF vs. PFLD - Expense Ratio Comparison

PREF has a 0.55% expense ratio, which is higher than PFLD's 0.45% expense ratio.

Dividends

PREF vs. PFLD - Dividend Comparison

PREF's dividend yield for the trailing twelve months is around 5.16%, less than PFLD's 5.60% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
PFLD AAM Low Duration Preferred and Income Securities ETF 144A	5.60%	6.52%	7.09%	7.09%	5.76%	4.52%	4.79%	0.82%	0.00%	0.00%
PREF Principal Spectrum Preferred Secs Active ETF	5.16%	4.87%	4.65%	4.67%	4.63%	4.07%	4.35%	4.67%	5.49%	2.35%

Frequently Asked Questions

Can I hold both PREF and PFLD in my portfolio?

PREF and PFLD have a correlation of 0.29, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PREF or PFLD?

PFLD has higher volatility (0.84%) compared to PREF (0.69%). In terms of maximum drawdown, PREF dropped -22.99% vs PFLD's -33.20%.

Which ETF is better, PREF or PFLD?

On 5-year performance, PREF leads with 3.07% vs 1.04% for PFLD. On fees, PFLD is cheaper at 0.45% per year. On volatility, PREF has been the lower-risk option at 0.69%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, PREF or PFLD?

Over the 5-year period, PREF has performed better with a 3.07% return vs 1.04%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, PREF or PFLD?

PFLD is cheaper with a 0.45% expense ratio, compared with 0.55% for PREF.

Which ETF pays a higher dividend yield, PREF or PFLD?

PFLD has the higher dividend yield at 5.60%, compared with 5.16% for PREF.

What is the main difference between PREF and PFLD?

They also come from different issuers: Principal and Advisors Asset Management. Their fees differ too: 0.55% for PREF and 0.45% for PFLD.

Which has better risk-adjusted returns?

PREF currently has the higher Sharpe Ratio (2.16 vs 1.85), 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.