CORBvsSDFIETF Comparison
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AB Core Bond ETF (CORB) belongs to the US Aggregate Bonds segment. AB Short Duration Income ETF (SDFI) is part of the Intl IG Bonds segment. Both ETFs have the same top 3 sector exposures: Sovereign, Finance and Industrials. CORB is less expensive with a Total Expense Ratio (TER) of 0.28%, versus 0.3% for SDFI. CORB is down -2.95% year-to-date (YTD) with +$350M in YTD flows. SDFI performs better with 0.6% YTD performance, and +$41M in YTD flows. Run a side-by-side ETF comparison of CORB and SDFI 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 SDFI performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/13/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | CORB SDFI | -1.03%-0.22% | -2.45%-0.47% | -2.95%+0.60% | n/a+1.56% | n/an/a | n/an/a |
| Flows | CORB SDFI | +$31M-$3M | +$118M+$16M | +$350M+$41M | -+$57M | -- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | CORB SDFI | +4.40%+1.82% | n/a+1.63% | n/an/a | n/an/a |
| Max drawdown | CORB SDFI | -3.67%-1.49% | n/a-1.49% | n/an/a | n/an/a |
| Max drawdown duration | CORB SDFI | 49d49d | n/a49d | n/an/a | n/an/a |
Trading data
CORB | SDFI | |
Last sale 10/15/2026 at 4:34 PM | $28.36 | $34.81 |
| Previous close 10/14/2026 | $28.19 | $34.82 |
| Consolidated volume 10/14/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 10/15/2026 at 4:34 PM
Live
Closed
CORB | SDFI | |
|---|---|---|
| Last price | $28.36 | $34.81 |
| 1D performance | +0.60% | -0.03% |
| AuM | $1.17 B | $189.25 M |
| E/R | 0.28% | 0.3% |
Characteristics
CORB | SDFI | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | AllianceBernstein | AllianceBernstein |
| Benchmark | - | - |
| N° of holdings | 494 | 385 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 7, 2025 | June 10, 2024 |
| ESG | No | No |
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Exposure
Countries
CORB
USA
57.59%
Other
42.41%
SDFI
USA
54.56%
Other
45.44%
Sectors
CORB
Sovereign
37.82%
Finance
8.16%
Other
54.02%
SDFI
Sovereign
21.71%
Finance
14.98%
Other
63.32%
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Diversification
CORB
Total weight of top 15 holdings out of 15
25.92%
SDFI
Total weight of top 15 holdings out of 15
20.22%
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%
SDFI
USA, Notes 4.125% 30jun2028, USD (BD-2028)
3.26%
USA, TIPS 2.125% 15apr2029, USD (X-2029)
3.04%
Brazil, LTN 0% 1oct2026, BRL (818D)
2.15%
USA, Notes 3.875% 31jul2030, USD (AB-2030)
1.58%
USA, Notes 4.25% 31jul2028, USD (BE-2028)
1.57%
USA, Notes 4% 31may2028, USD (BC-2028)
1.55%
USA, Notes 3.625% 31aug2030, USD (AC-2030)
1.23%
USA, Notes 4% 28feb2030, USD (H-2030)
1.08%
USA, Notes 4.25% 31jan2030, USD (U-2030)
1.02%
USA, Notes 3.75% 31oct2032, USD (R-2032)
0.75%
USA, Notes 3.875% 30sep2032, USD (Q-2032)
0.74%
USA, Notes 3.75% 30nov2032, USD (S-2032)
0.68%
US01F0526982
0.55%
USA, Notes 4.125% 15feb2036, USD (B-2036)
0.51%
USA, Notes 3.625% 31dec2030, USD (AH-2030)
0.49%
Frequently asked questions about CORB and SDFI
How have the CORB and SDFI ETFs performed in 2026?
As of October 13, 2026, CORB is down -2.95% year-to-date (YTD), while SDFI has returned 0.6%. That puts SDFI better performer ahead so far this year.
Which ETF is attracting more investor money: CORB or SDFI?
Year-to-date, the CORB ETF saw +$350M in flows, compared to +$41M for SDFI.
Which ETF is bigger: CORB or SDFI?
As of October 13, 2026, CORB holds $1.17 B in assets under management (AUM), while SDFI manages $189.25 M.
What sectors do the CORB and SDFI ETFs invest in?
CORB leans toward sectors like Sovereign and Finance. Meanwhile, SDFI focuses on Sovereign and Finance.
What are the top holdings of the CORB ETF and SDFI ETF?
CORB top holdings include USA, Notes 4.125% 31oct2031, USD (R-2031), USA, Bills 0% 19nov2026, USD (182D) and US01F0526982. SDFI holds in its top three: USA, Notes 4.125% 30jun2028, USD (BD-2028), USA, TIPS 2.125% 15apr2029, USD (X-2029) and Brazil, LTN 0% 1oct2026, BRL (818D).
Which ETF is more diversified: CORB or SDFI?
CORB holds 716 securities with 25.92% of its assets in the top 15. SDFI has 576 securities and a top 15 weight of 20.22%.
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