Data as of .
CTEC vs SMOG: which is really different?
CTEC and SMOG hold 25% of their weight in the same names, and CTEC returned more over the year.
ETFIQ Off-Index Score: CTEC scores higher
How much of it is not the index it is sold as an alternative to?
A percentile among the 379 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
25% of the two portfolios are the same securities at the same weight.
What they hold in common
By the books each fund has filed, CTEC and SMOG hold 25% of their money in the same securities at the same weight.
| Holding | CTEC | SMOG |
|---|---|---|
| BLOOM ENERGY CORP- A | 6.33% | 6.10% |
| VESTAS WIND SYSTEMS A/S | 4.46% | 4.89% |
| SAMSUNG SDI CO LTD | 4.32% | 4.22% |
| FIRST SOLAR INC | 4.37% | 2.94% |
| NEXTPOWER INC | 4.57% | 1.51% |
| NORDEX SE | 4.54% | 1.15% |
| ENPHASE ENERGY INC | 1.95% | 0.66% |
| JOHNSON MATTHEY PLC | 1.64% | 0.63% |
| QUANTUMSCAPE CORP | 1.26% | 0.48% |
| SIMPLO TECHNOLOGY CO LTD | 0.94% | 0.42% |
| XINYI SOLAR HOLDINGS LTD | 1.01% | 0.29% |
| LANDIS + GYR GROUP AG | 0.70% | 0.26% |
| Only in CTEC | Only in SMOG |
|---|---|
| EATON CORP PLC 6.40% | Iberdrola Sa 8.25% |
| GE VERNOVA INC 6.27% | Tesla Inc 8.17% |
| SIEMENS ENERGY AG 6.05% | Nextera Energy Inc 7.03% |
| SCHNEIDER ELECTRIC SE 6.04% | Enel Spa 6.57% |
| TRANE TECHNOLOGIES PLC 6.01% | Byd Co Ltd 5.64% |
| OTHER PAYABLE & RECEIVABLES 4.72% | Axia Energia Sa 3.48% |
| PRYSMIAN SPA 4.52% | Rivian Automotive Inc 2.98% |
| LG ENERGY SOLUTION 4.48% | Kingspan Group Plc 2.96% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Sep 18, 2026.
Performance, window by window
| Window | Total return | vs the S&P 500 | vs the Nasdaq-100 | |||
|---|---|---|---|---|---|---|
| CTEC | SMOG | CTEC | SMOG | CTEC | SMOG | |
| 3 months | −17.9% | −7.7% | −20.1 pts | −9.9 pts | −15.4 pts | −5.2 pts |
| 6 months | −1.6% | +3.1% | −19.7 pts | −14.9 pts | −25.9 pts | −21.1 pts |
| 1 year | +16.4% | +11.5% | −0.2 pts | −5.0 pts | −5.4 pts | −10.2 pts |
| 3 years | +0.5% | +29.0% | −77.9 pts | −49.4 pts | −97.7 pts | −69.2 pts |
| Since launch | −24.1% | +112.2% | −174.5 pts | −691.3 pts | −194.2 pts | −1578.0 pts |
| CTEC Global X ClimateTech ETF Holds 46 stocks in clean energy, 27% of its weight in S&P 500 companies | SMOG VanEck Low Carbon Energy ETF Holds 55 stocks in clean energy, 18% of its weight in S&P 500 companies | |
|---|---|---|
| Issuer | Global X | VanEck |
| Theme | Clean energy | Clean energy |
| In the S&P 500 | 27.4% | 18.2% |
| Active share vs the S&P 500 | 99.0% | 97.8% |
| In the Nasdaq-100 | 0.0% | 8.1% |
| Holdings | 46 | 55 |
| Top ten, share of the fund | 55.5% | 60.1% |
| Expense ratio | 0.50% | 0.64% |
| Fee for the differing part | 0.51% | 0.65% |
| Total return, 1 year | +16.4% | +11.5% |
| vs the S&P 500 | −0.2 pts | −5.0 pts |
| vs the Nasdaq-100 | −5.4 pts | −10.2 pts |
| Below its high | −59.7% | −23.9% |
| Net assets | $25m | $131m |
CTEC in plain words
By weight, 27% of CTEC's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 99%. The top ten holdings are 56% of the fund across 46 positions, as published by its issuer for Sep 18, 2026. Over the year to Sep 18, 2026 the fund returned +16.4% with distributions reinvested against +16.6% for the S&P 500, so a holder was about even. It sits 59.7% below its all-time high of Feb 9, 2021.
SMOG in plain words
By weight, 18% of SMOG's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 98%. The top ten holdings are 60% of the fund across 55 positions, as published by its issuer for Sep 18, 2026. Over the year to Sep 18, 2026 the fund returned +11.5% with distributions reinvested against +16.6% for the S&P 500, so a holder was behind by 5.0 pts. It sits 23.9% below its all-time high of Jan 22, 2021.
Questions people ask
- Do CTEC and SMOG hold the same stocks?
- By their latest filings, 25% of their books are the same securities at the same weight, which is a meaningful overlap. Overlap is the sum of the smaller weight of every security they share.
- Which is more different from the S&P 500, CTEC or SMOG?
- CTEC has 27% of its weight in S&P 500 names and SMOG has 18%, so CTEC differs more from the index.
- Which is cheaper, CTEC or SMOG?
- CTEC charges 0.50% a year and SMOG charges 0.64%, so CTEC is cheaper. Fees come from each fund's prospectus.
Other comparisons
Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, CTEC against SMOG, data as of Sep 18, 2026. https://etfiq.com/compare/themes/ctec-vs-smog Free to use with attribution; the underlying files are at Open data.