IWBvsLCTUETF Comparison
VS
ETF 2
LCTU
BlackRock U.S. Carbon Transition Readiness ETF
iShares Russell 1000 ETF (IWB) belongs to the US Large Cap segment. BlackRock U.S. Carbon Transition Readiness ETF (LCTU) is part of the segment. Both ETFs have the same top 3 sector exposures: Technology, Finance and Healthcare. IWB is less expensive with a Total Expense Ratio (TER) of 0.15%, versus 0.3% for LCTU. IWB is up 12.44% year-to-date (YTD) with -$2.57B in YTD flows. LCTU performs worse with 10.53% YTD performance, and -$321M in YTD flows. Run a side-by-side ETF comparison of IWB and LCTU 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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IWB vs LCTU performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/11/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IWB LCTU | -0.99%-2.07% | +3.70%+5.13% | +12.44%+10.53% | +16.66%+15.81% | +75.47%+70.85% | +77.12%+71.66% |
| Flows | IWB LCTU | -$167M+$6M | -$444M-$271M | -$2.57B-$321M | -$2.05B-$306M | -$2.56B-$891M | -$2.46B-$796M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IWB LCTU | +11.86%+12.01% | +13.00%+12.97% | +15.23%+15.31% | +17.35%+17.40% |
| Max drawdown | IWB LCTU | -3.34%-3.16% | -8.86%-9.37% | -19.16%-19.80% | -25.17%-25.94% |
| Max drawdown duration | IWB LCTU | 19d16d | 76d93d | 126d127d | 709d744d |
Trading data
IWB | LCTU | |
Last sale 9/11/2026 at 1:30 PM | $417.91 | $82.15 |
| Previous close 09/10/2026 | $414.32 | $81.47 |
| Consolidated volume 09/10/2026 | ||
| 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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LCTU
is actively managed and doesn’t replicate an indexIWB | LCTU | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/11/2026 at 1:30 PM
Live
Closed
IWB | LCTU | |
|---|---|---|
| Last price | $417.91 | $82.15 |
| 1D performance | +0.87% | +0.84% |
| AuM | $48.92 B | $1.23 B |
| E/R | 0.15% | 0.3% |
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Exposure
Countries
IWB
USA
97.59%
Other
2.41%
LCTU
USA
98.48%
Other
1.52%
Sectors
IWB
Technology
42.37%
Finance
14.69%
Healthcare
9.22%
Consumer Non-Cycl.
8.65%
Industrials
8.55%
Other
16.51%
LCTU
Technology
43.01%
Finance
14.56%
Healthcare
9.06%
Industrials
8.45%
Consumer Non-Cycl.
8.36%
Other
16.55%
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Diversification
IWB
Total weight of top 15 holdings out of 15
40.24%
LCTU
Total weight of top 15 holdings out of 15
39.92%
Top 15 holdings
Data as of July 31, 2026
IWB
Apple, Inc.
7.01%
NVIDIA Corp.
6.62%
Microsoft Corp.
4.88%
Amazon.com, Inc.
3.32%
Alphabet, Inc.
2.83%
Broadcom Inc.
2.62%
Alphabet, Inc.
2.31%
Meta Platforms, Inc.
1.72%
Micron Technology, Inc.
1.43%
Berkshire Hathaway, Inc.
1.38%
JPMorgan Chase & Co.
1.36%
Eli Lilly & Co.
1.34%
Tesla, Inc.
1.31%
Advanced Micro Devices, Inc.
1.15%
ExxonMobil Holdings Corp.
0.95%
LCTU
Apple, Inc.
7.65%
NVIDIA Corp.
7.20%
Microsoft Corp.
4.09%
Amazon.com, Inc.
2.82%
Alphabet, Inc.
2.60%
Broadcom Inc.
2.38%
Alphabet, Inc.
2.01%
Meta Platforms, Inc.
1.82%
Bank of America Corp.
1.63%
Micron Technology, Inc.
1.38%
Eli Lilly & Co.
1.30%
Tesla, Inc.
1.29%
Berkshire Hathaway, Inc.
1.27%
Advanced Micro Devices, Inc.
1.27%
JPMorgan Chase & Co.
1.21%
Frequently asked questions about IWB and LCTU
How have the IWB and LCTU ETFs performed in 2026?
As of September 11, 2026, IWB is up 12.44% year-to-date (YTD), while LCTU has returned 10.53%. That puts IWB better performer ahead so far this year.
Which ETF is attracting more investor money: IWB or LCTU?
Year-to-date, the IWB ETF saw -$2.57B in flows, compared to -$321M for LCTU.
Which ETF is more volatile: IWB or LCTU?
Over the past year, IWB had a volatility of 13%, while LCTU experienced 12.97%.
Which ETF is bigger: IWB or LCTU?
As of September 11, 2026, IWB holds $48.92 B in assets under management (AUM), while LCTU manages $1.23 B.
What sectors do the IWB and LCTU ETFs invest in?
IWB leans toward sectors like Technology, Finance and Healthcare. Meanwhile, LCTU focuses on Technology, Finance and Healthcare.
What are the top holdings of the IWB ETF and LCTU ETF?
IWB top holdings include Apple, Inc., NVIDIA Corp. and Microsoft Corp.. LCTU holds in its top three: Apple, Inc., NVIDIA Corp. and Microsoft Corp..
Which ETF is more diversified: IWB or LCTU?
IWB holds 1023 securities with 40.24% of its assets in the top 15. LCTU has 325 securities and a top 15 weight of 39.92%.
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