CASvsVGUSETF Comparison
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Simplify China A Shares PLUS Income ETF (CAS) belongs to the Options Strategies segment. Vanguard Ultra-Short Treasury ETF (VGUS) is part of the Money Market Bonds segment. CAS's top 2 sector exposures are Sovereign and Government Agencies. In contrast, VGUS's top sector exposures are Sovereign. CAS is more expensive with a Total Expense Ratio (TER) of 0.88%, versus 0.07% for VGUS. CAS is up 9.76% year-to-date (YTD) with +$3M in YTD flows. VGUS performs worse with 2.46% YTD performance, and +$580M in YTD flows. Run a side-by-side ETF comparison of CAS and VGUS 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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CAS vs VGUS performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/18/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | CAS VGUS | -3.44%+0.24% | -6.79%+0.87% | +9.76%+2.46% | +15.67%+3.63% | n/an/a | n/an/a |
| Flows | CAS VGUS | +$646K+$49M | +$1M+$100M | +$3M+$580M | +$4M+$701M | -- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | CAS VGUS | +31.13%+0.16% | +24.30%+0.15% | n/an/a | n/an/a |
| Max drawdown | CAS VGUS | -16.29%n/a | -16.29%n/a | n/an/a | n/an/a |
| Max drawdown duration | CAS VGUS | 88dn/a | 88dn/a | n/an/a | n/an/a |
Trading data
CAS | VGUS | |
Last sale 9/18/2026 at 1:30 PM | $25.55 | $75.56 |
| Previous close 09/17/2026 | $25.12 | $75.53 |
| Consolidated volume 09/17/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of August 31, 2026
1-year trailing difference
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CAS
is actively managed and doesn’t replicate an indexCAS | VGUS | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/18/2026 at 1:30 PM
Live
Closed
CAS | VGUS | |
|---|---|---|
| Last price | $25.55 | $75.56 |
| 1D performance | +1.70% | +0.03% |
| AuM | $13.33 M | $1.11 B |
| E/R | 0.88% | 0.07% |
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Exposure
Countries
CAS
USA
92.5%
Other
7.5%
VGUS
USA
100%
Other
0%
Sectors
CAS
Sovereign
71.37%
Government Agenci.
21.14%
Other
7.5%
VGUS
Sovereign
100%
Other
0%
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Diversification
CAS
Total weight of top 15 holdings out of 15
69.65%
VGUS
Total weight of top 15 holdings out of 15
37.34%
Top 15 holdings
Data as of July 31, 2026
CAS
USA, Bills 0% 3dec2026, USD (182D)
28.00%
USA, Bills 0% 1sep2026, USD (119D)
13.74%
USA, Bills 0% 15oct2026, USD (182D)
10.48%
USA, Bills 0% 31dec2026, USD (182D)
7.97%
Freddie Mac, FRN 22sep2027, USD
1.34%
USA, Notes FRN 31jul2026, USD (BF-2026)
1.16%
USA, Notes FRN 31jul2027, USD (BF-2027)
0.93%
FHLB, 0% 7aug2026, USD (365D)
0.93%
FHLB, 0% 21aug2026, USD (365D)
0.93%
FHLB, 0% 27aug2026, USD (365D)
0.93%
FHLB, 0% 3sep2026, USD (365D)
0.74%
USA, Notes FRN 31oct2027, USD (BK-2027)
0.65%
FHLB, 0% 28aug2026, USD (365D)
0.65%
USA, Bills 0% 8oct2026, USD (182D)
0.64%
USA, Notes FRN 30apr2027, USD (BB-2027)
0.59%
VGUS
USA, Bills 0% 6aug2026, USD (364D)
4.22%
USA, Bills 0% 3sep2026, USD (364D)
3.35%
USA, Bills 0% 17sep2026, USD (182D)
2.60%
USA, Bills 0% 24sep2026, USD (182D)
2.60%
USA, Bills 0% 13aug2026, USD (182D)
2.59%
USA, Bills 0% 27aug2026, USD (182D)
2.59%
USA, Bills 0% 10sep2026, USD (182D)
2.58%
USA, Bills 0% 20aug2026, USD (182D)
2.53%
USA, Bills 0% 25aug2026, USD (119D)
2.20%
USA, Bills 0% 11aug2026, USD (119D)
2.17%
USA, Bills 0% 18aug2026, USD (119D)
2.13%
USA, Bills 0% 4aug2026, USD (119D)
2.07%
USA, Bills 0% 1oct2026, USD (364D)
1.92%
USA, Bills 0% 24dec2026, USD (363D)
1.91%
USA, Bills 0% 29oct2026, USD (364D)
1.87%
Frequently asked questions about CAS and VGUS
How have the CAS and VGUS ETFs performed in 2026?
As of September 18, 2026, CAS is up 9.76% year-to-date (YTD), while VGUS has returned 2.46%. That puts CAS better performer ahead so far this year.
Which ETF is attracting more investor money: CAS or VGUS?
Year-to-date, the CAS ETF saw +$3M in flows, compared to +$580M for VGUS.
Which ETF is more volatile: CAS or VGUS?
Over the past year, CAS had a volatility of 24.3%, while VGUS experienced 0.15%.
Which ETF is bigger: CAS or VGUS?
As of September 18, 2026, CAS holds $13.33 M in assets under management (AUM), while VGUS manages $1.11 B.
What sectors do the CAS and VGUS ETFs invest in?
CAS leans toward sectors like Sovereign and Government Agencies. Meanwhile, VGUS focuses on Sovereign.
What are the top holdings of the CAS ETF and VGUS ETF?
CAS top holdings include USA, Bills 0% 3dec2026, USD (182D), USA, Bills 0% 1sep2026, USD (119D) and USA, Bills 0% 15oct2026, USD (182D). VGUS holds in its top three: USA, Bills 0% 6aug2026, USD (364D), USA, Bills 0% 3sep2026, USD (364D) and USA, Bills 0% 17sep2026, USD (182D).
Which ETF is more diversified: CAS or VGUS?
CAS holds 170 securities with 69.65% of its assets in the top 15. VGUS has 90 securities and a top 15 weight of 37.34%.
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Latest news about CAS & VGUS
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