THROvsVOOETF Comparison
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iShares U.S. Thematic Rotation Active ETF (THRO) belongs to the Multiple Trends segment. Vanguard S&P 500 ETF (VOO) is part of the US Large Cap segment. THRO's top 3 sector exposures are Technology, Consumer Non-Cyclicals and Finance. In contrast, VOO's top sector exposures are Technology, Finance and Consumer Non-Cyclicals. THRO is more expensive with a Total Expense Ratio (TER) of 0.57%, versus 0.03% for VOO. THRO is up 13.08% year-to-date (YTD) with -$1.59B in YTD flows. VOO performs worse with 12.32% YTD performance, and +$106.74B in YTD flows. Run a side-by-side ETF comparison of THRO and VOO 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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THRO vs VOO performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/01/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | THRO VOO | +0.72%+0.51% | +0.13%+0.69% | +13.08%+12.32% | +19.48%+20.31% | +79.34%+75.62% | n/a+80.86% |
| Flows | THRO VOO | +$131M+$27.87B | -$349M+$40.31B | -$1.59B+$106.74B | -$134M+$162.69B | +$5.01B+$376.00B | -+$453.43B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | THRO VOO | +15.91%+13.44% | +14.57%+12.79% | +16.24%+14.96% | n/a+17.18% |
| Max drawdown | THRO VOO | -5.58%-4.46% | -10.86%-8.90% | -19.10%-18.75% | n/a-24.52% |
| Max drawdown duration | THRO VOO | 62d59d | 77d76d | 154d126d | n/a708d |
Trading data
THRO | VOO | |
Last sale 9/2/2026 at 1:30 PM | $43.73 | $703.41 |
| Previous close 09/01/2026 | $43.55 | $700.28 |
| Consolidated volume 09/01/2026 | ||
| 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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THRO
is actively managed and doesn’t replicate an indexTHRO | VOO | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/2/2026 at 1:30 PM
Live
Closed
THRO | VOO | |
|---|---|---|
| Last price | $43.73 | $703.41 |
| 1D performance | +0.41% | +0.45% |
| AuM | $6.74 B | $1,041.41 B |
| E/R | 0.57% | 0.03% |
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Exposure
Countries
THRO
USA
95.1%
Other
4.9%
VOO
USA
96.39%
Other
3.61%
Sectors
THRO
Technology
48.6%
Consumer Non-Cycl.
11.57%
Finance
10.95%
Industrials
8.37%
Healthcare
7.38%
Other
13.14%
VOO
Technology
44.7%
Finance
13.84%
Consumer Non-Cycl.
9.41%
Healthcare
8.88%
Industrials
7.61%
Other
15.56%
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Diversification
THRO
Total weight of top 15 holdings out of 15
54.3%
VOO
Total weight of top 15 holdings out of 15
44.02%
Top 15 holdings
Data as of July 31, 2026
THRO
Apple, Inc.
8.89%
NVIDIA Corp.
7.36%
Microsoft Corp.
6.34%
Amazon.com, Inc.
4.97%
Alphabet, Inc.
4.10%
JPMorgan Chase & Co.
3.34%
Broadcom Inc.
2.75%
Micron Technology, Inc.
2.30%
US30233Q1085
2.28%
Caterpillar, Inc.
2.15%
Johnson & Johnson
2.12%
Alphabet, Inc.
2.05%
Walmart, Inc.
2.04%
RTX Corp.
1.80%
Visa, Inc.
1.80%
VOO
NVIDIA Corp.
7.55%
Apple, Inc.
7.04%
Microsoft Corp.
5.36%
Amazon.com, Inc.
4.13%
Alphabet, Inc.
3.24%
Broadcom Inc.
2.86%
Alphabet, Inc.
2.62%
Meta Platforms, Inc.
1.90%
JPMorgan Chase & Co.
1.46%
Berkshire Hathaway, Inc.
1.46%
Micron Technology, Inc.
1.44%
Eli Lilly & Co.
1.41%
Tesla, Inc.
1.36%
Advanced Micro Devices, Inc.
1.21%
US30233Q1085
1.00%
Frequently asked questions about THRO and VOO
How have the THRO and VOO ETFs performed in 2026?
As of September 1, 2026, THRO is up 13.08% year-to-date (YTD), while VOO has returned 12.32%. That puts THRO better performer ahead so far this year.
Which ETF is attracting more investor money: THRO or VOO?
Year-to-date, the THRO ETF saw -$1.59B in flows, compared to +$106.74B for VOO.
Which ETF is more volatile: THRO or VOO?
Over the past year, THRO had a volatility of 14.57%, while VOO experienced 12.79%.
Which ETF is bigger: THRO or VOO?
As of September 1, 2026, THRO holds $6.74 B in assets under management (AUM), while VOO manages $1,041.41 B.
What sectors do the THRO and VOO ETFs invest in?
THRO leans toward sectors like Technology, Consumer Non-Cyclicals and Finance. Meanwhile, VOO focuses on Technology, Finance and Consumer Non-Cyclicals.
What are the top holdings of the THRO ETF and VOO ETF?
THRO top holdings include Apple, Inc., NVIDIA Corp. and Microsoft Corp.. VOO holds in its top three: NVIDIA Corp., Apple, Inc. and Microsoft Corp..
Which ETF is more diversified: THRO or VOO?
THRO holds 241 securities with 54.3% of its assets in the top 15. VOO has 503 securities and a top 15 weight of 44.02%.
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