GNMAvsBMOPETF Comparison
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iShares GNMA Bond ETF (GNMA) belongs to the MBS & ABS segment. BNY Mellon Municipal Opportunities ETF (BMOP) is part of the Municipal Bonds segment. GNMA's top 2 sector exposures are Industrials and Non-Corporate. In contrast, BMOP's top sector exposures are Municipal, Sovereign and Industrials. GNMA is less expensive with a Total Expense Ratio (TER) of 0.11%, versus 0.54% for BMOP. Run a side-by-side ETF comparison of GNMA and BMOP 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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GNMA vs BMOP performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | GNMA BMOP | -0.41%-0.77% | -2.53%-3.98% | -1.65%n/a | -1.41%n/a | +15.95%n/a | +0.31%n/a |
| Flows | GNMA BMOP | -$15M-$134M | +$7M-$123M | +$36M- | +$69M- | +$124M- | -$12M- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | GNMA BMOP | +5.77%+5.18% | +4.49%n/a | +5.59%n/a | +6.56%n/a |
| Max drawdown | GNMA BMOP | -4.45%-5.91% | -5.36%n/a | -5.36%n/a | -15.48%n/a |
| Max drawdown duration | GNMA BMOP | 52d92d | 229dn/a | 229dn/a | 1397dn/a |
Trading data
GNMA | BMOP | |
Last sale 10/16/2026 at 1:30 PM | $42.27 | $23.73 |
| Previous close 10/15/2026 | $42.26 | $23.70 |
| Consolidated volume 10/15/2026 | ||
| 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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BMOP
is actively managed and doesn’t replicate an indexGNMA | BMOP | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/16/2026 at 1:30 PM
Live
Closed
GNMA | BMOP | |
|---|---|---|
| Last price | $42.27 | $23.73 |
| 1D performance | +0.02% | +0.13% |
| AuM | $416.20 M | $1.56 B |
| E/R | 0.11% | 0.54% |
Characteristics
GNMA | BMOP | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | iShares | BNY Mellon |
| Benchmark | Bloomberg U.S. GNMA Bond Index | - |
| N° of holdings | 109 | 237 |
| Asset class | Bonds | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | February 14, 2012 | January 9, 2026 |
| ESG | No | No |
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Exposure
Countries
GNMA
USA
48.8%
Other
51.2%
BMOP
USA
42.2%
Other
57.8%
Sectors
GNMA
Industrials
39.92%
Non-Corporate
8.88%
Other
51.2%
BMOP
Municipal
41.69%
Other
58.31%
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Diversification
GNMA
Total weight of top 15 holdings out of 15
33.91%
BMOP
Total weight of top 15 holdings out of 15
9.9%
Top 15 holdings
Data as of August 31, 2026
GNMA
BlackRock Cash Funds - Treasury
8.88%
G2 MA7192, 2% 20feb2051, USD (ABS)
2.59%
US3618N5XQ77
2.51%
G2 MA9360, 4.5% 20dec2053, USD (ABS)
2.42%
US21H0526945
1.97%
US36179WTX64
1.90%
G2 MA8878, 5% 20may2053, USD (ABS)
1.67%
G2 MB0025, 5% 20nov2054, USD (ABS)
1.64%
US36179WJR07
1.62%
G2 MA7880, 2% 20feb2052, USD (ABS)
1.59%
G2 MA8801, 5.5% 20apr2053, USD (ABS)
1.59%
G2 MA6864, 2% 20sep2050, USD (ABS)
1.44%
US36179WLP13
1.40%
US36179WFG87
1.38%
US3617NWEY42
1.32%
BMOP
US45884AF813
0.89%
California Community Choice Financing Authority, 5% 1nov2033, USD (2025F)
0.79%
US052398FE91
0.75%
US745160SG73
0.74%
US575579U623
0.67%
US57421CNT70
0.62%
University of Texas, 5% 1jul2041, USD (2023A)
0.62%
US544532LU62
0.62%
State of Washington, 5% 1aug2040, USD (2024A)
0.61%
Black Belt Energy Gas District, 5% 1may2055, USD (2024)
0.60%
US56035DHT28
0.60%
Tennergy Corp., 5% 1oct2054, USD (2024)
0.60%
California Community Choice Financing Authority, 5% 1aug2055, USD (2024C)
0.60%
US09182TLC98
0.60%
US896035DL36
0.59%
Frequently asked questions about GNMA and BMOP
Which ETF is bigger: GNMA or BMOP?
As of October 16, 2026, GNMA holds $416.20 M in assets under management (AUM), while BMOP manages $1.56 B.
What sectors do the GNMA and BMOP ETFs invest in?
GNMA leans toward sectors like Industrials and Non-Corporate. Meanwhile, BMOP focuses on Municipal.
What are the top holdings of the GNMA ETF and BMOP ETF?
GNMA top holdings include BlackRock Cash Funds - Treasury, G2 MA7192, 2% 20feb2051, USD (ABS) and US3618N5XQ77. BMOP holds in its top three: US45884AF813, California Community Choice Financing Authority, 5% 1nov2033, USD (2025F) and US052398FE91.
Which ETF is more diversified: GNMA or BMOP?
GNMA holds 355 securities with 33.91% of its assets in the top 15. BMOP has 667 securities and a top 15 weight of 9.9%.
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