THROvsSPYMETF Comparison
VS
iShares U.S. Thematic Rotation Active ETF (THRO) belongs to the Multiple Trends segment. State Street SPDR Portfolio S&P 500 ETF (SPYM) is part of the US Large Cap segment. THRO's top 3 sector exposures are Technology, Consumer Non-Cyclicals and Finance. In contrast, SPYM's top sector exposures are Technology, Finance and Healthcare. THRO is more expensive with a Total Expense Ratio (TER) of 0.57%, versus 0.02% for SPYM. THRO is up 13.52% year-to-date (YTD) with -$948M in YTD flows. SPYM performs worse with 12.89% YTD performance, and +$68.91B in YTD flows. Run a side-by-side ETF comparison of THRO and SPYM 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 SPYM performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | THRO SPYM | +0.93%+1.49% | +2.51%+1.94% | +13.52%+12.89% | +17.42%+16.86% | +87.28%+81.93% | n/a+83.09% |
| Flows | THRO SPYM | +$601M+$11.45B | +$802M+$20.14B | -$948M+$68.91B | -$42M+$72.09B | +$5.65B+$123.63B | -+$131.01B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | THRO SPYM | +12.35%+11.18% | +14.46%+12.73% | +16.14%+14.98% | n/a+16.98% |
| Max drawdown | THRO SPYM | -3.62%-3.03% | -10.86%-8.89% | -19.10%-18.74% | n/a-24.50% |
| Max drawdown duration | THRO SPYM | 10d53d | 77d76d | 154d126d | n/a708d |
Trading data
THRO | SPYM | |
Last sale 10/16/2026 at 1:30 PM | $43.65 | |
| Previous close 10/15/2026 | $44.14 | |
| 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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THRO
is actively managed and doesn’t replicate an indexTHRO | SPYM | |
|---|---|---|
| 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
THRO | SPYM | |
|---|---|---|
| Last price | $43.65 | – |
| 1D performance | -1.11% | – |
| AuM | $7.38 B | $182.05 B |
| E/R | 0.57% | 0.02% |
Characteristics
THRO | SPYM | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | iShares | State Street Investment Management |
| Benchmark | - | S&P 500 Index |
| N° of holdings | 246 | 498 |
| Asset class | - | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | December 16, 2021 | November 8, 2005 |
| ESG | No | No |
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Exposure
Countries
THRO
USA
98.08%
Other
1.92%
SPYM
USA
96.46%
Other
3.54%
Sectors
THRO
Technology
48.55%
Consumer Non-Cycl.
10.69%
Finance
10.3%
Industrials
8.75%
Healthcare
7.7%
Other
14%
SPYM
Technology
45.26%
Finance
13.63%
Healthcare
9.09%
Consumer Non-Cycl.
8.88%
Industrials
7.47%
Other
15.66%
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Diversification
THRO
Total weight of top 15 holdings out of 15
52.54%
SPYM
Total weight of top 15 holdings out of 15
44.14%
Top 15 holdings
Data as of August 31, 2026
THRO
NVIDIA Corp.
8.26%
Apple, Inc.
7.87%
Microsoft Corp.
6.55%
Amazon.com, Inc.
4.76%
Alphabet, Inc.
3.73%
JPMorgan Chase & Co.
2.77%
Broadcom Inc.
2.40%
ExxonMobil Holdings Corp.
2.29%
Micron Technology, Inc.
2.23%
Johnson & Johnson
2.12%
Caterpillar, Inc.
2.08%
Walmart, Inc.
2.02%
Visa, Inc.
1.91%
Alphabet, Inc.
1.87%
Tesla, Inc.
1.69%
SPYM
NVIDIA Corp.
8.08%
Apple, Inc.
7.03%
Microsoft Corp.
5.69%
Amazon.com, Inc.
3.84%
Alphabet, Inc.
3.01%
Broadcom Inc.
2.65%
Alphabet, Inc.
2.40%
Meta Platforms, Inc.
1.90%
Micron Technology, Inc.
1.63%
Tesla, Inc.
1.57%
JPMorgan Chase & Co.
1.44%
Berkshire Hathaway, Inc.
1.40%
Eli Lilly & Co.
1.38%
Advanced Micro Devices, Inc.
1.16%
Johnson & Johnson
0.97%
Frequently asked questions about THRO and SPYM
How have the THRO and SPYM ETFs performed in 2026?
As of October 16, 2026, THRO is up 13.52% year-to-date (YTD), while SPYM has returned 12.89%. That puts THRO better performer ahead so far this year.
Which ETF is attracting more investor money: THRO or SPYM?
Year-to-date, the THRO ETF saw -$948M in flows, compared to +$68.91B for SPYM.
Which ETF is more volatile: THRO or SPYM?
Over the past year, THRO had a volatility of 14.46%, while SPYM experienced 12.73%.
Which ETF is bigger: THRO or SPYM?
As of October 16, 2026, THRO holds $7.38 B in assets under management (AUM), while SPYM manages $182.05 B.
What sectors do the THRO and SPYM ETFs invest in?
THRO leans toward sectors like Technology, Consumer Non-Cyclicals and Finance. Meanwhile, SPYM focuses on Technology, Finance and Healthcare.
What are the top holdings of the THRO ETF and SPYM ETF?
THRO top holdings include NVIDIA Corp., Apple, Inc. and Microsoft Corp.. SPYM holds in its top three: NVIDIA Corp., Apple, Inc. and Microsoft Corp..
Which ETF is more diversified: THRO or SPYM?
THRO holds 248 securities with 52.54% of its assets in the top 15. SPYM has 501 securities and a top 15 weight of 44.14%.
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