Do BLDX and EFRA hold the same stocks?

By their latest filings, 12% 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 EFRA?

BLDX has 36% of its weight in S&P 500 names and EFRA has 26%, so EFRA differs more from the index.

Which is cheaper, BLDX or EFRA?

BLDX charges 0.60% a year and EFRA charges 0.47%, so EFRA is cheaper. Fees come from each fund's prospectus.

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BLDX vs EFRA: which is really different?

BLDX and EFRA hold 12% of their weight in the same names. Impax Global Sustainable Infrastructure ETF and iShares Environmental Infrastructure and Industrials ETF.

36.0%

BLDX in the S&P 500

26.4%

EFRA in the S&P 500

−1.4%

BLDX total return, since launch

+3.8%

EFRA 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

EFRA · 1 year to Sep 30, 202674% of its weight is outside the S&P 500

26% of EFRA's weight is in S&P 500 companies and 74% is outside the index

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

BLDX 38.3

EFRA 78.3

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 EFRA hold 12% 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 29, 2026.

50%

half

12% in common

Positions both hold, largest shared weight first

Holding BLDX EFRA

Advanced Drainage Systems, Inc. 2.16% 2.63%

Severn Trent plc 2.08% 3.09%

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%

NextEra Energy, Inc. 3.61%

Digital Realty Trust, Inc. 3.30%

Deutsche Telekom AG 3.26%

Only in EFRA

VERALTO CORP 6.24%

WESTINGHOUSE AIR BRAKE TECHNOLOGIE 6.24%

SMURFIT WESTROCK PLC 6.23%

VEOLIA ENVIRON. SA 5.84%

AMERICAN WATER WORKS 5.73%

XYLEM INC 5.73%

CLEAN HARBORS INC 4.52%

UNITED UTILITIES GROUP PLC 3.96%

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

12% 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	EFRA	BLDX	EFRA	BLDX	EFRA
3 months	−4.8%	−3.9%	−7.3 pts	−6.4 pts	−6.9 pts	−6.0 pts
6 months	−4.5%	−0.9%	−21.4 pts	−17.8 pts	−31.3 pts	−27.7 pts
1 year	not published	+3.8%	not published	−11.9 pts	not published	−20.0 pts
3 years	not published	+44.6%	not published	−40.3 pts	not published	−65.3 pts
Since launch BLDX Feb 2026 · EFRA Nov 2022	−1.4%	+57.3%	−11.9 pts	−59.2 pts	−19.9 pts	−133.5 pts

BLDX and EFRA 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

EFRA

iShares Environmental Infrastructure and Industrials ETF · Holds 100 stocks in infrastructure, 26% of its weight in S&P 500 companies

Issuer Impax iShares

Theme Infrastructure Infrastructure

In the S&P 500 36.0% 26.4%

Active share vs the S&P 500 96.6% 99.8%

In the Nasdaq-100 3.3% 0.0%

Holdings 38 100

Top ten, share of the fund 39.6% 51.1%

Expense ratio 0.60% 0.47%

Fee for the differing part 0.62% 0.47%

Total return, 1 year −1.4% (since launch on Feb 2, 2026) +3.8%

vs the S&P 500 −11.9 pts −11.9 pts

vs the Nasdaq-100 −19.9 pts −20.0 pts

Below its high −10.4% −7.9%

Net assets $118m $5m

BLDX and EFRA 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.

EFRA in plain words

By weight, 26% of EFRA's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 100%. The top ten holdings are 51% of the fund across 100 positions, as published by its issuer for Sep 29, 2026. Over the year to Sep 30, 2026 the fund returned +3.8% with distributions reinvested against +15.7% for the S&P 500, so a holder was behind by 11.9 pts. It sits 7.9% below its all-time high of Feb 27, 2026.

Questions people ask

Do BLDX and EFRA hold the same stocks?: By their latest filings, 12% 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 EFRA?: BLDX has 36% of its weight in S&P 500 names and EFRA has 26%, so EFRA differs more from the index.
Which is cheaper, BLDX or EFRA?: BLDX charges 0.60% a year and EFRA charges 0.47%, so EFRA is cheaper. Fees come from each fund's prospectus.

Other comparisons

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

BLDX on its own →EFRA 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 ↗EFRA filings on SEC EDGAR ↗EFRA prospectus with the expense ratio (SEC) ↗iShares page for EFRA ↗

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 EFRA, data as of Sep 30, 2026. https://etfiq.com/compare/themes/bldx-vs-efra

Open data

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