RBLDvsIMCBETF Comparison
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First Trust Alerian US NextGen Infrastructure ETF (RBLD) belongs to the Infrastructure segment. iShares Morningstar Mid-Cap ETF (IMCB) is part of the US Mid Cap segment. RBLD's top 3 sector exposures are Industrials, Utilities and Energy. In contrast, IMCB's top sector exposures are Finance, Industrials and Technology. RBLD is more expensive with a Total Expense Ratio (TER) of 0.65%, versus 0.04% for IMCB. RBLD is up 11.91% year-to-date (YTD) with +$23M in YTD flows. IMCB performs better with 17.46% YTD performance, and +$50M in YTD flows. Run a side-by-side ETF comparison of RBLD and IMCB 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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RBLD vs IMCB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | RBLD IMCB | -7.53%-3.96% | -7.31%+2.48% | +11.91%+17.46% | +13.81%+18.59% | +62.92%+63.25% | +60.33%+52.74% |
| Flows | RBLD IMCB | -$13M+$25M | +$9M+$51M | +$23M+$50M | +$26M+$251M | +$30M+$443M | +$28M+$365M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | RBLD IMCB | +13.47%+9.48% | +14.31%+13.05% | +15.55%+15.21% | +16.97%+17.70% |
| Max drawdown | RBLD IMCB | -8.21%-5.37% | -8.21%-8.06% | -18.87%-19.88% | -21.77%-25.13% |
| Max drawdown duration | RBLD IMCB | 83d32d | 83d49d | 218d238d | 612d835d |
Trading data
RBLD | IMCB | |
Last sale 9/17/2026 at 1:30 PM | $84.04 | $95.94 |
| Previous close 09/17/2026 | $83.23 | $96.22 |
| 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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RBLD | IMCB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/17/2026 at 1:30 PM
Live
Closed
RBLD | IMCB | |
|---|---|---|
| Last price | $84.04 | $95.94 |
| 1D performance | +0.97% | -0.29% |
| AuM | $41.62 M | $1.68 B |
| E/R | 0.65% | 0.04% |
Characteristics
RBLD | IMCB | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | First Trust | iShares |
| Benchmark | Alerian U.S. NextGen Infrastructure Index | Morningstar U.S. Mid Cap Index |
| N° of holdings | 100 | 391 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | October 13, 2008 | June 28, 2004 |
| ESG | No | No |
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Exposure
Countries
RBLD
USA
95.69%
Other
4.31%
IMCB
USA
95.9%
Other
4.1%
Sectors
RBLD
Industrials
38.18%
Utilities
29.2%
Energy
8.59%
Technology
8.29%
Non-Energy Materi.
8.24%
Other
7.5%
IMCB
Finance
19.92%
Industrials
15.72%
Technology
14.75%
Healthcare
8.98%
Non-Energy Materi.
7.48%
Energy
7.29%
Other
25.87%
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Diversification
RBLD
Total weight of top 15 holdings out of 15
17.14%
IMCB
Total weight of top 15 holdings out of 15
9.99%
Top 15 holdings
Data as of July 31, 2026
RBLD
Snowflake, Inc.
1.22%
Freeport-McMoRan, Inc.
1.20%
Nordson Corp.
1.19%
MongoDB, Inc.
1.18%
3M Co.
1.17%
SLB Ltd.
1.15%
Emerson Electric Co.
1.14%
Westinghouse Air Brake Technologies Corp.
1.14%
Targa Resources Corp.
1.13%
Baker Hughes Co.
1.12%
Constellation Energy Corp.
1.11%
Digital Realty Trust, Inc.
1.10%
ITT, Inc.
1.10%
Nucor Corp.
1.10%
Cheniere Energy, Inc.
1.09%
IMCB
Dell Technologies, Inc.
0.80%
Automatic Data Processing, Inc.
0.73%
The Bank of New York Mellon Corp.
0.71%
Snowflake, Inc.
0.69%
The PNC Financial Services Group, Inc.
0.69%
U.S. Bancorp
0.68%
Fortinet, Inc.
0.66%
CSX Corp.
0.65%
Valero Energy Corp.
0.64%
3M Co.
0.63%
Marathon Petroleum Corp.
0.63%
Freeport-McMoRan, Inc.
0.63%
Marsh & McLennan Cos., Inc.
0.62%
Cloudflare, Inc.
0.62%
Johnson Controls International Plc
0.61%
Frequently asked questions about RBLD and IMCB
How have the RBLD and IMCB ETFs performed in 2026?
As of September 16, 2026, RBLD is up 11.91% year-to-date (YTD), while IMCB has returned 17.46%. That puts IMCB better performer ahead so far this year.
Which ETF is attracting more investor money: RBLD or IMCB?
Year-to-date, the RBLD ETF saw +$23M in flows, compared to +$50M for IMCB.
Which ETF is more volatile: RBLD or IMCB?
Over the past year, RBLD had a volatility of 14.31%, while IMCB experienced 13.05%.
Which ETF is bigger: RBLD or IMCB?
As of September 16, 2026, RBLD holds $41.62 M in assets under management (AUM), while IMCB manages $1.68 B.
What sectors do the RBLD and IMCB ETFs invest in?
RBLD leans toward sectors like Industrials, Utilities and Energy. Meanwhile, IMCB focuses on Finance, Industrials and Technology.
What are the top holdings of the RBLD ETF and IMCB ETF?
RBLD top holdings include Snowflake, Inc., Freeport-McMoRan, Inc. and Nordson Corp.. IMCB holds in its top three: Dell Technologies, Inc., Automatic Data Processing, Inc. and The Bank of New York Mellon Corp..
Which ETF is more diversified: RBLD or IMCB?
RBLD holds 100 securities with 17.14% of its assets in the top 15. IMCB has 396 securities and a top 15 weight of 9.99%.
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Latest news about RBLD & IMCB
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