CORBvsSHYMETF Comparison
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AB Core Bond ETF (CORB) belongs to the US Aggregate Bonds segment. iShares Short Duration High Yield Muni Active ETF (SHYM) is part of the Municipal Bonds segment. CORB's top 3 sector exposures are Sovereign, Finance and Industrials. In contrast, SHYM's top sector exposures are Municipal, Non-Corporate and Healthcare. CORB is less expensive with a Total Expense Ratio (TER) of 0.28%, versus 0.42% for SHYM. CORB is down -2.84% year-to-date (YTD) with +$350M in YTD flows. SHYM performs better with 0.17% YTD performance, and +$440M in YTD flows. Run a side-by-side ETF comparison of CORB and SHYM 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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CORB vs SHYM performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/14/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | CORB SHYM | -0.92%-0.22% | -2.58%-2.23% | -2.84%+0.17% | n/a+1.15% | n/a+20.03% | n/a+2.83% |
| Flows | CORB SHYM | +$31M+$41M | +$118M+$91M | +$350M+$440M | -+$480M | -+$839M | -+$861M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | CORB SHYM | +4.37%+3.96% | n/a+2.43% | n/a+4.68% | n/a+5.25% |
| Max drawdown | CORB SHYM | -3.67%-4.24% | n/a-4.56% | n/a-5.75% | n/a-21.21% |
| Max drawdown duration | CORB SHYM | 50d92d | n/a101d | n/a215d | n/a1065d |
Trading data
CORB | SHYM | |
Last sale 10/16/2026 at 1:30 PM | $28.36 | $21.62 |
| Previous close 10/15/2026 | $28.35 | $21.58 |
| Consolidated volume 10/15/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 10/16/2026 at 1:30 PM
Live
Closed
CORB | SHYM | |
|---|---|---|
| Last price | $28.36 | $21.62 |
| 1D performance | +0.04% | +0.16% |
| AuM | $1.17 B | $854.51 M |
| E/R | 0.28% | 0.42% |
Characteristics
CORB | SHYM | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | AllianceBernstein | iShares |
| Benchmark | - | - |
| N° of holdings | 494 | 151 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 7, 2025 | March 18, 2021 |
| ESG | No | No |
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Exposure
Countries
CORB
USA
57.59%
Other
42.41%
SHYM
USA
43.27%
Other
56.73%
Sectors
CORB
Sovereign
37.82%
Finance
8.16%
Other
54.02%
SHYM
Municipal
36.47%
Other
63.53%
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Diversification
CORB
Total weight of top 15 holdings out of 15
25.92%
SHYM
Total weight of top 15 holdings out of 15
22.58%
Top 15 holdings
Data as of August 31, 2026
CORB
USA, Notes 4.125% 31oct2031, USD (R-2031)
2.29%
USA, Bills 0% 19nov2026, USD (182D)
2.09%
US01F0526982
2.08%
USA, Notes 3.125% 15nov2028, USD (F-2028)
2.06%
USA, Notes 3.75% 31aug2031, USD (P-2031)
2.04%
US01F0206957
1.88%
USA, Notes 3.625% 30sep2031, USD (Q-2031)
1.83%
USA, Bonds 4.625% 15nov2055, USD
1.80%
USA, Notes 3.875% 31mar2031, USD (W-2031)
1.75%
USA, Notes 3.625% 30sep2030, USD (AD-2030)
1.65%
US21H0226975
1.54%
USA, Notes 4.625% 30sep2028, USD (AD-2028)
1.26%
USA, Notes 4.5% 15nov2033, USD (F-2033)
1.24%
USA, Notes 4.875% 31oct2028, USD (AF-2028)
1.23%
US21H0506988
1.18%
SHYM
BlackRock Liquidity MuniCash
6.67%
Puerto Rico, FRN 1nov2051, USD
1.76%
Black Belt Energy Gas District, 5% 1dec2031, USD (2026)
1.41%
Atlanta, 5% 1nov2032, USD (2026)
1.36%
Black Belt Energy Gas District, 5% 1dec2034, USD (2026)
1.24%
Denver, 5% 1oct2032, USD (2017)
1.19%
US592250FA71
1.15%
US13034A7E44
1.10%
Black Belt Energy Gas District, 5% 1jul2033, USD (2026)
1.03%
Kentucky Public Energy Authority, 5% 1dec2033, USD (2025)
1.00%
Philadelphia Authority for Industrial Development, 5.5% 1dec2058, USD
0.99%
New York Transportation Development Corp., 5.25% 1aug2031, USD (2020)
0.98%
US64947PAA49
0.94%
Black Belt Energy Gas District, 5% 1nov2036, USD (2026)
0.88%
Puerto Rico Sales Tax Financing Corp., 0% 1jul2029, USD (3792D)
0.88%
Frequently asked questions about CORB and SHYM
How have the CORB and SHYM ETFs performed in 2026?
As of October 14, 2026, CORB is down -2.84% year-to-date (YTD), while SHYM has returned 0.17%. That puts SHYM better performer ahead so far this year.
Which ETF is attracting more investor money: CORB or SHYM?
Year-to-date, the CORB ETF saw +$350M in flows, compared to +$440M for SHYM.
Which ETF is bigger: CORB or SHYM?
As of October 14, 2026, CORB holds $1.17 B in assets under management (AUM), while SHYM manages $854.51 M.
What sectors do the CORB and SHYM ETFs invest in?
CORB leans toward sectors like Sovereign and Finance. Meanwhile, SHYM focuses on Municipal.
What are the top holdings of the CORB ETF and SHYM ETF?
CORB top holdings include USA, Notes 4.125% 31oct2031, USD (R-2031), USA, Bills 0% 19nov2026, USD (182D) and US01F0526982. SHYM holds in its top three: BlackRock Liquidity MuniCash, Puerto Rico, FRN 1nov2051, USD and Black Belt Energy Gas District, 5% 1dec2031, USD (2026).
Which ETF is more diversified: CORB or SHYM?
CORB holds 716 securities with 25.92% of its assets in the top 15. SHYM has 454 securities and a top 15 weight of 22.58%.
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