SECRvsMBBETF Comparison
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NYLI MacKay Securitized Income ETF (SECR) belongs to the US Aggregate Bonds segment. iShares MBS ETF (MBB) is part of the MBS & ABS segment. SECR's top 3 sector exposures are Industrials, Sovereign and Finance. In contrast, MBB's top sector exposures are Industrials, Non-Corporate and Finance. SECR is more expensive with a Total Expense Ratio (TER) of 0.53%, versus 0.04% for MBB. SECR is down -1.71% year-to-date (YTD) with +$15M in YTD flows. MBB performs better with -0.99% YTD performance, and -$1.79B in YTD flows. Run a side-by-side ETF comparison of SECR and MBB below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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SECR vs MBB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/28/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SECR MBB | +1.29%+2.12% | -2.19%-1.37% | -1.71%-0.99% | -1.82%-1.04% | n/a+19.36% | n/a+0.44% |
| Flows | SECR MBB | +$4K-$1.87B | +$2M-$2.66B | +$15M-$1.79B | +$16M-$4.82B | -+$7.95B | -+$13.59B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SECR MBB | +4.98%+5.94% | +4.05%+4.71% | n/a+5.65% | n/a+6.68% |
| Max drawdown | SECR MBB | -4.07%-4.27% | -5.48%-5.38% | n/a-5.38% | n/a-16.94% |
| Max drawdown duration | SECR MBB | 64d64d | 241d241d | n/a241d | n/a1405d |
Trading data
SECR | MBB | |
Last sale 10/29/2026 at 1:30 PM | $24.54 | $91.68 |
| Previous close 10/28/2026 | $24.45 | $91.41 |
| Consolidated volume 10/28/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 2026
1-year trailing difference
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SECR
is actively managed and doesn’t replicate an indexSECR | MBB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/29/2026 at 1:30 PM
Live
Closed
SECR | MBB | |
|---|---|---|
| Last price | $24.54 | $91.68 |
| 1D performance | +0.37% | +0.30% |
| AuM | $162.23 M | $35.55 B |
| E/R | 0.53% | 0.04% |
Characteristics
SECR | MBB | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | New York Life Investments | iShares |
| Benchmark | - | Bloomberg U.S. MBS Index |
| N° of holdings | 46 | 1237 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 31, 2024 | March 13, 2007 |
| ESG | No | No |
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Exposure
Countries
SECR
USA
20.75%
Other
79.25%
MBB
USA
28.44%
Other
71.56%
Sectors
SECR
Industrials
18.36%
Other
81.64%
MBB
Industrials
20.61%
Non-Corporate
7.6%
Other
71.79%
Diversification
SECR
Total weight of top 15 holdings out of 15
19.82%
MBB
Total weight of top 15 holdings out of 15
16.82%
Top 15 holdings
Data as of August 31, 2026
SECR
US3132DWDC47
1.97%
US31418EB825
1.89%
FN MA4492, 2% 1dec2051, USD (ABS)
1.84%
FR SD4958, 2% 1jun2052, USD (ABS)
1.60%
US3140XQAF41
1.50%
FR SD8266, 4.5% 1nov2052, USD (ABS)
1.49%
FN MA5353, 5.5% 1may2054, USD (ABS)
1.34%
FN MA4438, 2.5% 1oct2051, USD (ABS)
1.24%
FN MA4624, 3% 1jun2052, USD (ABS)
1.15%
FN MA4511, 2% 1jan2052, USD (ABS)
1.14%
US31418ED565
1.09%
US31418FE297
1.05%
USA, Notes 4.375% 31jul2033, USD (N-2033)
0.88%
US3132DWCB72
0.83%
FR SD8211, 2% 1may2052, USD (ABS)
0.80%
MBB
BlackRock Cash Funds - Institutional
7.60%
US01F0526982
1.26%
US21H0526945
1.05%
FR SD8146, 2% 1may2051, USD (ABS)
0.98%
US01F0506927
0.87%
US21H0606978
0.63%
G2 MB0025, 5% 20nov2054, USD (ABS)
0.55%
US21H0506988
0.55%
G2 MA7648, 2% 20oct2051, USD (ABS)
0.51%
US36179WTX64
0.50%
FN MA4492, 2% 1dec2051, USD (ABS)
0.49%
US36179WJR07
0.48%
US21H0426955
0.48%
FR SD8140, 2% 1apr2051, USD (ABS)
0.47%
FN MA4465, 2% 1nov2051, USD (ABS)
0.42%
Frequently asked questions about SECR and MBB
How have the SECR and MBB ETFs performed in 2026?
As of October 28, 2026, SECR is down -1.71% year-to-date (YTD), while MBB has lost -0.99%. That puts MBB better performer ahead so far this year.
Which ETF is attracting more investor money: SECR or MBB?
Year-to-date, the SECR ETF saw +$15M in flows, compared to -$1.79B for MBB.
Which ETF is more volatile: SECR or MBB?
Over the past year, SECR had a volatility of 4.05%, while MBB experienced 4.71%.
Which ETF is bigger: SECR or MBB?
As of October 28, 2026, SECR holds $162.23 M in assets under management (AUM), while MBB manages $35.55 B.
What sectors do the SECR and MBB ETFs invest in?
SECR leans toward sectors like Industrials. Meanwhile, MBB focuses on Industrials and Non-Corporate.
What are the top holdings of the SECR ETF and MBB ETF?
SECR top holdings include US3132DWDC47, US31418EB825 and FN MA4492, 2% 1dec2051, USD (ABS). MBB holds in its top three: BlackRock Cash Funds - Institutional, US01F0526982 and US21H0526945.
Which ETF is more diversified: SECR or MBB?
SECR holds 454 securities with 19.82% of its assets in the top 15. MBB has 9405 securities and a top 15 weight of 16.82%.
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Latest news about SECR & MBB
The Weekly ETF Market Monitor (September 28-October 2, 2026)
October 2, 2026
MBB
What's the Fund | NYLI MacKay Securitized Income ETF (SECR)
October 30, 2025
SECR
NYSE x ETF Central ETF Education Series
March 5, 2024
MBB
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