The space ETFs least like the S&P 500
See 9 funds ranked by the share of the fund by weight that is held in S&P 500 companies. Updated Oct 20, 2026. Every fund here is sold on space, and they differ in how much of the index they hand you back. The one at the top is the one adding the most that is new.
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| # | Ticker | Fund | Weight in S&P 500 companies ↑ | Active share | Net assets | Fee |
|---|---|---|---|---|---|---|
| 1 | MARS | Roundhill Space & Technology ETF | 0.0% | 100.0% | $40m | 0.75% |
| 2 | ORBX | Global X Space Tech ETF | 0.0% | 100.0% | $39m | 0.50% |
| 3 | NASA | Tema Space Innovators ETF | 2.6% | 99.9% | $985m | 0.75% |
| 4 | WARP | VanEck Space ETF | 5.4% | 100.0% | $37m | 0.50% |
| 5 | GALX | VistaShares Space Supercycle ETF | 14.9% | 99.0% | $3m | 0.75% |
| 6 | DIPR | Corgi Space & Satellite Communications E | 22.3% | 99.7% | $1m | 0.35% |
| 7 | FSPC | First Trust Bloomberg Space Economy ETF | 27.5% | 98.8% | $2m | 0.65% |
| 8 | UFO | Procure Space ETF | 35.8% | 98.6% | $587m | 0.75% |
| 9 | ARKX | ARK Space & Defense Innovation ETF | 53.0% | 83.6% | $705m | 0.75% |
Method
The 9 of 10 ETFs in the space theme with a filed book, least overlap first, each measured against the S&P 500 holdings ETFIQ reads for the same date.
The rest of the method
Across the funds listed here the weight held in S&P 500 companies runs from 0.0% to 53.0%. A thematic fund is worth its fee only for the part of it you do not already own. The list sorts one published figure, with no scoring or weighting. Every fund ETFIQ covers in this category is eligible, closed funds included.
ETFIQ links to the documents behind every figure; a link is not an endorsement. A ranking is not a recommendation or an opinion.
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ETFIQ, The space ETFs least like the S&P 500, ranked by the share of the fund by weight that is held in S&P 500 companies, data as of Oct 20, 2026. https://etfiq.com/rankings/themes-off-index-space
ETFIQ. (Oct 20, 2026). The space ETFs least like the S&P 500, ranked by the share of the fund by weight that is held in S&P 500 companies. Retrieved from https://etfiq.com/rankings/themes-off-index-space
[The space ETFs least like the S&P 500, ranked by the share of the fund by weight that is held in S&P 500 companies (ETFIQ, Oct 20, 2026)](https://etfiq.com/rankings/themes-off-index-space)
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