GNMAvsVSDMETF Comparison
VS
iShares GNMA Bond ETF (GNMA) belongs to the MBS & ABS segment. Vanguard Short Duration Tax-Exempt Bond ETF (VSDM) is part of the Municipal Bonds segment. GNMA's top 2 sector exposures are Industrials and Non-Corporate. In contrast, VSDM's top sector exposures are Municipal. GNMA is less expensive with a Total Expense Ratio (TER) of 0.11%, versus 0.12% for VSDM. GNMA is down -1.57% year-to-date (YTD) with +$36M in YTD flows. VSDM performs better with 0.44% YTD performance, and +$1.00B in YTD flows. Run a side-by-side ETF comparison of GNMA and VSDM 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 VSDM performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/15/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | GNMA VSDM | -0.43%-0.13% | -2.58%-1.01% | -1.57%+0.44% | -0.96%+1.02% | +16.04%n/a | +0.30%n/a |
| Flows | GNMA VSDM | -$15M+$323M | +$7M+$559M | +$36M+$1.00B | +$69M+$1.10B | +$124M- | -$12M- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | GNMA VSDM | +5.77%+2.68% | +4.51%+1.65% | +5.59%n/a | +6.56%n/a |
| Max drawdown | GNMA VSDM | -4.45%-2.74% | -5.36%-2.75% | -5.36%n/a | -15.48%n/a |
| Max drawdown duration | GNMA VSDM | 51d63d | 228d101d | 228dn/a | 1397dn/a |
Trading data
GNMA | VSDM | |
Last sale 10/16/2026 at 5:01 PM | $42.20 | $75.06 |
| Previous close 10/15/2026 | $42.26 | $74.98 |
| 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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VSDM
is actively managed and doesn’t replicate an indexGNMA | VSDM | |
|---|---|---|
| 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 5:01 PM
Live
Closed
GNMA | VSDM | |
|---|---|---|
| Last price | $42.20 | $75.06 |
| 1D performance | -0.14% | +0.11% |
| AuM | $416.54 M | $1.33 B |
| E/R | 0.11% | 0.12% |
Exposure
Countries
GNMA
USA
48.8%
Other
51.2%
VSDM
USA
42.8%
Other
57.2%
Sectors
GNMA
Industrials
39.92%
Non-Corporate
8.88%
Other
51.2%
VSDM
Municipal
42.8%
Other
57.2%
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Diversification
GNMA
Total weight of top 15 holdings out of 15
33.91%
VSDM
Total weight of top 15 holdings out of 15
5.2%
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%
VSDM
US13013JCS33
0.49%
California Community Choice Financing Authority, 5% 1jul2053, USD (2023B)
0.44%
US84136HAH66
0.44%
New Jersey Transportation Trust Fund Authority, 5% 15dec2034, USD
0.36%
Rutherford Health and Educational Facilities Board, 5% 15nov2048, USD (2025B-1)
0.33%
Florida Municipal Power Agency, 4% 1oct2030, USD (2018A)
0.33%
US13013JAP12
0.33%
US09182TEC71
0.33%
US54811GS350
0.33%
Energy Southeast, 5% 1nov2033, USD (2026)
0.31%
US09182TLC98
0.31%
Texas Municipal Gas Acquisition and Supply Corp., 5.5% 1jan2054, USD (2023A)
0.31%
US842469DL92
0.30%
US56035DEN84
0.30%
Southern California Public Power Authority, 5% 1nov2033, USD (2026A)
0.29%
Frequently asked questions about GNMA and VSDM
How have the GNMA and VSDM ETFs performed in 2026?
As of October 15, 2026, GNMA is down -1.57% year-to-date (YTD), while VSDM has returned 0.44%. That puts VSDM better performer ahead so far this year.
Which ETF is attracting more investor money: GNMA or VSDM?
Year-to-date, the GNMA ETF saw +$36M in flows, compared to +$1.00B for VSDM.
Which ETF is more volatile: GNMA or VSDM?
Over the past year, GNMA had a volatility of 4.51%, while VSDM experienced 1.65%.
Which ETF is bigger: GNMA or VSDM?
As of October 15, 2026, GNMA holds $416.54 M in assets under management (AUM), while VSDM manages $1.33 B.
What sectors do the GNMA and VSDM ETFs invest in?
GNMA leans toward sectors like Industrials and Non-Corporate. Meanwhile, VSDM focuses on Municipal.
What are the top holdings of the GNMA ETF and VSDM ETF?
GNMA top holdings include BlackRock Cash Funds - Treasury, G2 MA7192, 2% 20feb2051, USD (ABS) and US3618N5XQ77. VSDM holds in its top three: US13013JCS33, California Community Choice Financing Authority, 5% 1jul2053, USD (2023B) and US84136HAH66.
Which ETF is more diversified: GNMA or VSDM?
GNMA holds 355 securities with 33.91% of its assets in the top 15. VSDM has 3102 securities and a top 15 weight of 5.2%.
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