ASEC vs SPMB
American Century Securitized Credit ETF against State Street SPDR Portfolio Mortgage Backed Bond ETF: cost, size, returns, what they hold and how much of it is the same.
Fee gap
25 bp
SPMB is cheaper
1-year return gap
—
Larger fund
SPMB
$6.8B
Side by side
| ASEC | SPMB | |
|---|---|---|
| Fund | American Century Securitized Credit ETF | State Street SPDR Portfolio Mortgage Backed Bond ETF |
| Issuer | American Century | State Street SPDR |
| Category | Mortgage & Securitized | Mortgage & Securitized |
| Expense ratio | 0.29% | 0.04% |
| Assets | $20M | $6.8B |
| Average daily dollar volume | $4K | $42M |
| Listed | May 27, 2026 | Jan 15, 2009 |
| FrenzyCap score | 18 | 95 |
| 1-month return | −1.1% | −1.9% |
| 3-month return | −1.7% | −3.8% |
| Year to date | — | −5.5% |
| 1-year return | — | −5.5% |
| 30-day volatility | 2.2% | 6.3% |
| Worst drawdown, 1 year | −2.4% | −8.0% |
| Trailing 12-month yield | 1.81% | 4.33% |
| Holdings | 49 | 2,757 |
| Top 10 weight | 63.5% | 12.6% |
| Look-through P/E | — | — |
| Holdings vs fair value | — | — |
| Holdings above 200-day average | — | — |
| Net flow, latest 3 reported months | +$20M thru May 2026 | +$196M thru Jun 2026 |
| 30-day implied volatility | — | 27.1% |
| Holdings as of | as of May 31, 2026SEC filing | as of Oct 8, 2026issuer data |
Returns are price returns and exclude distributions. Flows are each fund's own latest reported months and may not cover the same period.
More: full overlap table · ASEC holdings · SPMB holdings
Fund data comes from each fund's SEC filings and issuer disclosures and is shown with the date it is as of. SEC portfolio and flow filings become public about 60 days after the period they cover. Nothing here is investment advice; see Terms.