JMBS vs. ASEC

Last updated Jul 14, 2026

JMBS (Janus Henderson Mortgage-Backed Securities ETF) and ASEC (American Century Securitized Credit ETF) are both Mortgage Backed Securities funds. Both are actively managed. At a 0.12 correlation, their price movements are largely independent. JMBS charges 0.32%/yr vs 0.29%/yr for ASEC.

Performance

JMBS vs. ASEC - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Janus Henderson Mortgage-Backed Securities ETF (JMBS) and American Century Securitized Credit ETF (ASEC). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

JMBS

• 1D: -0.34%
• 1M: -0.89%
• 6M: -0.44%
• YTD: 0.13%
• 1Y: 5.35%
• 3Y*: 4.52%
• 5Y*: 0.63%
• 10Y*: —

ASEC

• 1D: -0.04%
• 1M: 0.09%
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

JMBS vs. ASEC - Yearly Performance Comparison

	2026 (YTD)
JMBS Janus Henderson Mortgage-Backed Securities ETF	-0.32%
ASEC American Century Securitized Credit ETF	-0.09%

Correlation

The correlation between JMBS and ASEC is 0.12, 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	0.12

Return for Risk

JMBS vs. ASEC — Risk / Return Rank

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

JMBS

JMBS Risk / Return Rank: 44
JMBS Sharpe Ratio Rank: 44
JMBS Sortino Ratio Rank: 46
JMBS Omega Ratio Rank: 43
JMBS Calmar Ratio Rank: 43
JMBS Martin Ratio Rank: 42

ASEC

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

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.

JMBS vs. ASEC - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Janus Henderson Mortgage-Backed Securities ETF (JMBS) and American Century Securitized Credit ETF (ASEC). 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.

	JMBS	ASEC	Difference
Sharpe ratio: Return per unit of total volatility	1.26	—	—
Sortino ratio: Return per unit of downside risk	1.86	—	—
Omega ratio: Gain probability vs. loss probability	1.23	—	—
Calmar ratio: Return relative to maximum drawdown	1.76	—	—
Martin ratio: Return relative to average drawdown	5.31	—	—

Drawdowns

JMBS vs. ASEC - Drawdown Comparison

The maximum JMBS drawdown since its inception was -16.68%, which is greater than ASEC's maximum drawdown of -0.46%. Use the drawdown chart below to compare losses from any high point for JMBS and ASEC.

Drawdown Indicators

	JMBS	ASEC	Difference
Max Drawdown Largest peak-to-trough decline	-16.68%	-0.46%	-16.22%
Max Drawdown (1Y) Largest decline over 1 year	-3.05%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-7.76%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-16.68%	—	—
Current Drawdown Current decline from peak	-2.02%	-0.19%	-1.83%
Average Drawdown Average peak-to-trough decline	-3.86%	-0.19%	-3.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.01%	—	—

Volatility

Volatility by Period

	JMBS	ASEC	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.43%	—	—
Volatility (6M) Calculated over the trailing 6-month period	3.44%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	4.28%	1.44%	+2.84%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.53%	1.44%	+5.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.51%	1.44%	+4.07%

JMBS vs. ASEC - Expense Ratio Comparison

JMBS has a 0.32% expense ratio, which is higher than ASEC's 0.29% expense ratio.

Dividends

JMBS vs. ASEC - Dividend Comparison

JMBS's dividend yield for the trailing twelve months is around 5.23%, more than ASEC's 0.46% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
ASEC American Century Securitized Credit ETF	0.46%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
JMBS Janus Henderson Mortgage-Backed Securities ETF	5.23%	5.03%	5.53%	4.38%	2.73%	1.16%	2.92%	3.63%	0.89%

Frequently Asked Questions

Can I hold both JMBS and ASEC in my portfolio?

JMBS and ASEC have a correlation of 0.12, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, JMBS or ASEC?

On fees, ASEC is cheaper at 0.29% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, JMBS or ASEC?

ASEC is cheaper with a 0.29% expense ratio, compared with 0.32% for JMBS.

Which ETF pays a higher dividend yield, JMBS or ASEC?

JMBS has the higher dividend yield at 5.23%, compared with 0.46% for ASEC.

What is the main difference between JMBS and ASEC?

They also come from different issuers: Janus Henderson and American Century. Their fees differ too: 0.32% for JMBS and 0.29% for ASEC.