Do BLDX and RBLD hold the same stocks?

By their latest filings, 9% of their books are the same securities at the same weight, which is mostly different names. Overlap is the sum of the smaller weight of every security they share.

Which is more different from the S&P 500, BLDX or RBLD?

BLDX has 36% of its weight in S&P 500 names and RBLD has 82%, so BLDX differs more from the index.

Which is cheaper, BLDX or RBLD?

BLDX charges 0.60% a year and RBLD charges 0.65%, so BLDX is cheaper. Fees come from each fund's prospectus.

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BLDX vs RBLD: which is really different?

BLDX and RBLD hold 9% of their weight in the same names. Impax Global Sustainable Infrastructure ETF and First Trust Alerian U.S. NextGen Infrastructure ETF.

36.0%

BLDX in the S&P 500

81.6%

RBLD in the S&P 500

−1.4%

BLDX total return, since launch

+10.5%

RBLD total return, 1 year

BLDX · 6 months to Sep 30, 202664% of its weight is outside the S&P 500

36% of BLDX's weight is in S&P 500 companies and 64% is outside the index

RBLD · 1 year to Sep 30, 202618% of its weight is outside the S&P 500

82% of RBLD's weight is in S&P 500 companies and 18% is outside the index

ETFIQ Off-Index Score · BLDX scores higherHow much of it is not the index it is sold as an alternative to?

BLDX 38.3

RBLD 25.7

0.1, the lowest in this set92.0, the highest

A percentile among the 375 thematic ETFs with a holdings filing. It is a position in a set, not a rating, and neither end of it is a recommendation. All thematic ETFs ranked by it → How it is computed →

What they hold in common

By the books each fund has filed, BLDX and RBLD hold 9% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026 and Sep 30, 2026.

50%

half

9% in common

Positions both hold, largest shared weight first

Holding BLDX RBLD

Digital Realty Trust, Inc. 3.30% 1.05%

Trane Technologies plc 1.38% 1.03%

NextEra Energy, Inc. 3.61% 0.93%

Only in BLDX

Union Pacific Corp. 5.41%

American Water Works Co., Inc. 5.06%

Iberdrola SA 4.57%

Keppel DC REIT 4.03%

National Grid plc 3.95%

Deutsche Telekom AG 3.26%

Elia Group SA/NV 3.22%

Veolia Environnement SA 3.16%

Only in RBLD

Okta, Inc. 1.51%

Twilio Inc. (Class A) 1.44%

Snowflake Inc. (Class A) 1.36%

Cloudflare, Inc. (Class A) 1.35%

Freeport-McMoRan Inc. 1.24%

Nordson Corporation 1.23%

Emerson Electric Co. 1.21%

Wabtec Corporation 1.19%

Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed.

9% of the two portfolios are the same securities at the same weight.

Performance, window by window

	Total return		vs the S&P 500		vs the Nasdaq-100
Window	BLDX	RBLD	BLDX	RBLD	BLDX	RBLD
3 months	−4.8%	−6.5%	−7.3 pts	−9.0 pts	−6.9 pts	−8.6 pts
6 months	−4.5%	+1.1%	−21.4 pts	−15.8 pts	−31.3 pts	−25.7 pts
1 year	not published	+10.5%	not published	−5.2 pts	not published	−13.3 pts
3 years	not published	+69.0%	not published	−16.0 pts	not published	−41.0 pts
Since launch BLDX Feb 2026 · RBLD Jan 2010	−1.4%	+177.9%	−11.9 pts	−626.7 pts	−19.9 pts	−1559.6 pts

BLDX and RBLD over each window. Every figure is an ETFIQ calculation with distributions reinvested. Source: ETFIQ. Open the live comparison on ETFIQ →

On the same fields

BLDX

Impax Global Sustainable Infrastructure ETF · Holds 38 stocks in infrastructure, 36% of its weight in S&P 500 companies

RBLD

First Trust Alerian U.S. NextGen Infrastructure ETF · Holds 104 stocks in infrastructure, 82% of its weight in S&P 500 companies

Issuer Impax First Trust

Theme Infrastructure Infrastructure

In the S&P 500 36.0% 81.6%

Active share vs the S&P 500 96.6% 91.8%

In the Nasdaq-100 3.3% 7.9%

Holdings 38 104

Top ten, share of the fund 39.6% 12.8%

Expense ratio 0.60% 0.65%

Fee for the differing part 0.62% 0.71%

Total return, 1 year −1.4% (since launch on Feb 2, 2026) +10.5%

vs the S&P 500 −11.9 pts −5.2 pts

vs the Nasdaq-100 −19.9 pts −13.3 pts

Below its high −10.4% −8.7%

Net assets $118m $41m

BLDX and RBLD on the same fields, as of Sep 30, 2026. Source: ETFIQ.

BLDX in plain words

By weight, 36% of BLDX's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 97%. The top ten holdings are 40% of the fund across 38 positions, as filed for Jun 30, 2026. Since it launched on Feb 2, 2026 the fund returned −1.4% with distributions reinvested against +10.5% for the S&P 500, so a holder was behind by 11.9 pts. It sits 10.4% below its all-time high of Apr 8, 2026.

RBLD in plain words

By weight, 82% of RBLD's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 92%. The top ten holdings are 13% of the fund across 104 positions, as published by its issuer for Sep 30, 2026. Over the year to Sep 30, 2026 the fund returned +10.5% with distributions reinvested against +15.7% for the S&P 500, so a holder was behind by 5.2 pts. It sits 8.7% below its all-time high of Jun 25, 2026.

Questions people ask

Do BLDX and RBLD hold the same stocks?: By their latest filings, 9% of their books are the same securities at the same weight, which is mostly different names. Overlap is the sum of the smaller weight of every security they share.
Which is more different from the S&P 500, BLDX or RBLD?: BLDX has 36% of its weight in S&P 500 names and RBLD has 82%, so BLDX differs more from the index.
Which is cheaper, BLDX or RBLD?: BLDX charges 0.60% a year and RBLD charges 0.65%, so BLDX is cheaper. Fees come from each fund's prospectus.

Other comparisons

BLDX vs EFRA BLDX vs IPAV BLDX vs PAVE BLDX vs UPGR RBLD vs UPGR RBLD vs EFRA RBLD vs IPAV RBLD vs PAVE

BLDX on its own →RBLD on its own →How every figure is computed →Standards and sources →

Where these figures came from

BLDX filings on SEC EDGAR ↗BLDX prospectus with the expense ratio (SEC) ↗Impax website ↗RBLD filings on SEC EDGAR ↗RBLD prospectus with the expense ratio (SEC) ↗First Trust page for RBLD ↗

ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement. A comparison is not a recommendation.

Cite this page

ETFIQ, BLDX against RBLD, data as of Sep 30, 2026. https://etfiq.com/compare/themes/bldx-vs-rbld

Open data

Free to use with attribution. Every figure is calculated from a named public source; the method is at etfiq.com/methodology.