SPABvsWTBNETF Comparison
VS
ETF 2
WTBN
WisdomTree Bianco Fixed Income Total Return Fund
This fund is part of
US Aggregate Bonds
+0.03%
State Street SPDR Portfolio Aggregate Bond ETF (SPAB) and WisdomTree Bianco Fixed Income Total Return Fund (WTBN) belong to the same industry segment: US Aggregate Bonds. Both ETFs have the same top 3 sector exposures: Sovereign, Finance and Industrials. SPAB is less expensive with a Total Expense Ratio (TER) of 0.03%, versus 0.64% for WTBN. SPAB is down -1.55% year-to-date (YTD) with +$1.57B in YTD flows. WTBN performs worse with -2.64% YTD performance, and +$21M in YTD flows. Run a side-by-side ETF comparison of SPAB and WTBN 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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SPAB vs WTBN performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SPAB WTBN | -0.06%-0.35% | -1.75%-2.09% | -1.55%-2.64% | -1.68%-2.91% | +14.97%n/a | -1.79%n/a |
| Flows | SPAB WTBN | +$530M+$3M | +$858M+$5M | +$1.57B+$21M | +$2.03B+$33M | +$3.57B- | +$5.17B- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SPAB WTBN | +4.38%+4.76% | +3.86%+4.01% | +4.97%n/a | +5.98%n/a |
| Max drawdown | SPAB WTBN | -3.30%-3.37% | -4.68%-5.06% | -4.87%n/a | -17.44%n/a |
| Max drawdown duration | SPAB WTBN | 52d52d | 229d229d | 284dn/a | 1556dn/a |
Trading data
SPAB | WTBN | |
Last sale 10/16/2026 at 1:30 PM | $24.59 | $24.19 |
| Previous close 10/15/2026 | $24.59 | $24.18 |
| 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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SPAB | WTBN | |
|---|---|---|
| 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
SPAB | WTBN | |
|---|---|---|
| Last price | $24.59 | $24.19 |
| 1D performance | +0.00% | +0.02% |
| AuM | $10.42 B | $103.92 M |
| E/R | 0.03% | 0.64% |
Characteristics
SPAB | WTBN | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | State Street Investment Management | WisdomTree |
| Benchmark | Bloomberg US Aggregate Bond Index | Bianco Research Fixed Income Index |
| N° of holdings | 6931 | 10108 |
| Asset class | Bonds | Fixed Income |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 23, 2007 | December 20, 2023 |
| ESG | No | No |
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Exposure
Countries
SPAB
USA
74.49%
Other
25.51%
WTBN
USA
76.91%
Other
23.09%
Sectors
SPAB
Sovereign
45.89%
Finance
10.21%
Industrials
9.47%
Other
34.43%
WTBN
Sovereign
43%
Finance
8.6%
Industrials
7.28%
Other
41.13%
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Diversification
SPAB
Total weight of top 15 holdings out of 15
6.59%
WTBN
Total weight of top 15 holdings out of 15
7.86%
Top 15 holdings
Data as of August 31, 2026
SPAB
USA, Notes 3.5% 15dec2028, USD (AV-2028)
0.74%
US91282CRJ26
0.58%
USA, Notes 3.625% 31dec2030, USD (AH-2030)
0.55%
US01F0526982
0.50%
USA, Notes 3.375% 30nov2027, USD (BL-2027)
0.45%
USA, Notes 4.375% 30nov2028, USD (AG-2028)
0.41%
USA, Notes 3.5% 31jan2028, USD (U-2028)
0.41%
USA, Notes 3.875% 31mar2031, USD (W-2031)
0.40%
US01F0506927
0.38%
USA, Notes 3.375% 31dec2027, USD (BM-2027)
0.37%
USA, Notes 4.25% 15nov2034, USD (F-2034)
0.37%
USA, Notes 4.25% 15aug2035, USD (E-2035)
0.37%
USA, Notes 3.625% 30sep2031, USD (Q-2031)
0.36%
USA, Notes 4% 15feb2034, USD (B-2034)
0.35%
USA, Notes 4% 30jun2032, USD (M-2032)
0.35%
WTBN
BlackRock Cash Funds - Institutional
1.96%
USA, Notes 4.125% 15feb2036, USD (B-2036)
0.47%
USA, Notes 3.875% 15aug2033, USD (E-2033)
0.46%
USA, Notes 4.375% 30nov2030, USD (S-2030)
0.46%
USA, Notes 4.375% 15may2036, USD (C-2036)
0.44%
USA, Notes 4.625% 15feb2035, USD (B-2035)
0.44%
USA, Notes 4.25% 15nov2034, USD (F-2034)
0.44%
USA, Notes 4% 15nov2035, USD (F-2035)
0.43%
USA, Notes 4.375% 15may2034, USD (C-2034)
0.42%
USA, Notes 4.25% 15may2035, USD (C-2035)
0.42%
USA, Notes 4.25% 15aug2035, USD (E-2035)
0.42%
USA, Notes 4% 15feb2034, USD (B-2034)
0.41%
USA, Notes 3.375% 15may2033, USD (C-2033)
0.37%
USA, Notes 1.875% 15feb2032, USD (B-2032)
0.36%
USA, Notes 4% 28feb2030, USD (H-2030)
0.36%
Frequently asked questions about SPAB and WTBN
How have the SPAB and WTBN ETFs performed in 2026?
As of October 16, 2026, SPAB is down -1.55% year-to-date (YTD), while WTBN has lost -2.64%. That puts SPAB better performer ahead so far this year.
Which ETF is attracting more investor money: SPAB or WTBN?
Year-to-date, the SPAB ETF saw +$1.57B in flows, compared to +$21M for WTBN.
Which ETF is more volatile: SPAB or WTBN?
Over the past year, SPAB had a volatility of 3.86%, while WTBN experienced 4.01%.
Which ETF is bigger: SPAB or WTBN?
As of October 16, 2026, SPAB holds $10.42 B in assets under management (AUM), while WTBN manages $103.92 M.
What sectors do the SPAB and WTBN ETFs invest in?
SPAB leans toward sectors like Sovereign, Finance and Industrials. Meanwhile, WTBN focuses on Sovereign, Finance and Industrials.
What are the top holdings of the SPAB ETF and WTBN ETF?
SPAB top holdings include USA, Notes 3.5% 15dec2028, USD (AV-2028), US91282CRJ26 and USA, Notes 3.625% 31dec2030, USD (AH-2030). WTBN holds in its top three: BlackRock Cash Funds - Institutional, USA, Notes 4.125% 15feb2036, USD (B-2036) and USA, Notes 3.875% 15aug2033, USD (E-2033).
Which ETF is more diversified: SPAB or WTBN?
SPAB holds 8475 securities with 6.59% of its assets in the top 15. WTBN has 18463 securities and a top 15 weight of 7.86%.
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