MBSX vs. ASEC

Last updated Aug 4, 2026

MBSX (Regan Fixed Rate MBS ETF) and ASEC (American Century Securitized Credit ETF) are both Mortgage Backed Securities funds. Both are actively managed. Their 0.13 correlation means their historical movements had little consistent relationship. MBSX charges 0.40%/yr vs 0.29%/yr for ASEC.

Performance

MBSX vs. ASEC - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Regan Fixed Rate MBS ETF (MBSX) and American Century Securitized Credit ETF (ASEC). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

MBSX

• 1D: 0.84%
• 1M: 0.82%
• 6M: -4.10%
• YTD: 5.39%
• 1Y: 9.16%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 11.23%

ASEC

• 1D: -0.06%
• 1M: 0.13%
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: —

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
ASEC American Century Securitized Credit ETF	$624.55	$2.96K	$413.80K
MBSX Regan Fixed Rate MBS ETF	$146.22K	$105.02K	$106.65K

MBSX vs. ASEC - Yearly Performance Comparison

	2026 (YTD)
MBSX Regan Fixed Rate MBS ETF	6.11%
ASEC American Century Securitized Credit ETF	0.07%

Correlation

The correlation between MBSX and ASEC is 0.13, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (All Time) Calculated using the full available price history since May 28, 2026	0.13

Return for Risk

MBSX vs. ASEC — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

MBSX

MBSX Risk / Return Rank: 17
MBSX Sharpe Ratio Rank: 14
MBSX Sortino Ratio Rank: 18
MBSX Omega Ratio Rank: 23
MBSX Calmar Ratio Rank: 16
MBSX Martin Ratio Rank: 16

ASEC

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

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

MBSX vs. ASEC - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Regan Fixed Rate MBS ETF (MBSX) 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.

	MBSX	ASEC	Difference
Sharpe ratio: Return per unit of total volatility	0.17	—	—
Sortino ratio: Return per unit of downside risk	0.63	—	—
Omega ratio: Gain probability vs. loss probability	1.11	—	—
Calmar ratio: Return relative to maximum drawdown	0.33	—	—
Martin ratio: Return relative to average drawdown	0.83	—	—

Drawdowns

MBSX vs. ASEC - Drawdown Comparison

The maximum MBSX drawdown since its inception was -27.57%, which is greater than ASEC's maximum drawdown of -0.46%. Use the drawdown chart below to compare losses from any high point for MBSX and ASEC.

Drawdown Indicators

	MBSX	ASEC	Difference
Max Drawdown Largest peak-to-trough decline	-27.57%	-0.46%	-27.11%
Max Drawdown (1Y) Largest decline over 1 year	-27.57%	—	—
Current Drawdown Current decline from peak	-21.18%	-0.32%	-20.86%
Average Drawdown Average peak-to-trough decline	-8.17%	-0.18%	-7.99%
Ulcer Index Depth and duration of drawdowns from previous peaks	11.08%	—	—

Volatility

Volatility by Period

	MBSX	ASEC	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.90%	—	—
Volatility (6M) Calculated over the trailing 6-month period	52.85%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	55.38%	1.82%	+53.56%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	53.23%	1.82%	+51.41%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	53.23%	1.82%	+51.41%

MBSX vs. ASEC - Expense Ratio Comparison

MBSX has a 0.40% expense ratio, which is higher than ASEC's 0.29% expense ratio.

Dividends

MBSX vs. ASEC - Dividend Comparison

MBSX's dividend yield for the trailing twelve months is around 3.56%, more than ASEC's 0.45% yield.

Position	TTM	2025
ASEC American Century Securitized Credit ETF	0.45%	0.00%
MBSX Regan Fixed Rate MBS ETF	3.56%	2.77%

Frequently Asked Questions

Can I hold both MBSX and ASEC in my portfolio?

MBSX and ASEC have a correlation of 0.13, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, MBSX 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, MBSX or ASEC?

ASEC is cheaper with a 0.29% expense ratio, compared with 0.40% for MBSX.

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

MBSX has the higher dividend yield at 3.56%, compared with 0.45% for ASEC.

What is the main difference between MBSX and ASEC?

They also come from different issuers: Regan and American Century. Their fees differ too: 0.40% for MBSX and 0.29% for ASEC.