The commercial space economy has shifted from a story about government contracts to one about private revenue. Satellite broadband and earth observation companies are signing recurring contracts with insurers, defense buyers, and agricultural firms, while launch cadence keeps climbing and launch services revenue is moving away from cost-plus government work. Three exchange-traded funds give investors meaningfully different ways to express that thesis: Procure Space ETF (NASDAQ:UFO), SPDR S&P Kensho Final Frontiers ETF (NYSEARCA:ROKT), and ARK Space Exploration & Innovation ETF (NYSEARCA:ARKX).
All three funds have already put up big numbers. UFO is up about 31% year to date and roughly 122% over the past twelve months. ROKT has climbed about 29% YTD and 100% over the same period. ARKX sits at an 11% YTD gain and about 67% over the past year. The spread between them says a lot about how differently each portfolio is built, and the right pick comes down to how an investor wants to approach the commercial shift underway in the space economy.
UFO: The Concentrated Pure-Play
UFO’s approach starts with the index it tracks. The S‑Network Space Index only includes companies that generate meaningful revenue from space‑related activity, and that filter is what gives the fund its shape. Instead of burying space exposure inside diversified aerospace conglomerates where the segment barely moves the needle, the screen pulls out the satellite operators, launch providers, ground‑equipment makers, and connectivity names whose financials actually rise and fall with the commercial space cycle. It’s a way of isolating the part of the industry that lives and dies on space demand rather than treating it as a footnote inside a broader industrial business.
The portfolio reads as a directory of the operators that benefit when launch costs fall, and bandwidth demand rises. EchoStar sits at the top weight of about 7%, followed by Rocket Lab at about 6% and AST SpaceMobile at about 5%. MDA Space, SES, ViaSat, Trimble, SiriusXM, Iridium, and Garmin round out the top ten. By sector, the fund leans into Media & Communications at 46% and Industrials at 43%, a mix that captures both the satellite-services revenue stream and the hardware buildout supporting it.
UFO is also more international than its peers, with United States exposure of about 71%, with the remainder allocated to Japan, Canada, Luxembourg, the Netherlands, and several smaller allocations. That matters because Europe’s satellite operators and Japan’s component suppliers are core to the global ecosystem and are largely absent from U.S.-only frontier funds.
The tradeoff is size and cost. UFO carries a 0.75% expense ratio and about $376 million in total net assets, and smaller AUM tends to mean wider bid-ask spreads, and the concentration of pure-play names brings idiosyncratic risk: a single bad quarter from one of the top holdings has more drag here than in a fund with broader sector ballast. The inception date is April 11, 2019, and the shares are around $51.
ROKT: Picks, Shovels, and Defense Ballast
ROKT tracks the S&P Kensho Final Frontiers Index, which uses an AI and quantitative weighting methodology to capture companies driving innovation in both outer space and the deep sea. The dual mandate is intentional. It gives the fund exposure to dual-use engineering capabilities (autonomous vehicles, robotics, advanced materials, communications) that show up on both ends of the frontier spectrum.
Sector composition is where ROKT diverges sharply from UFO. Aerospace & Defense accounts for 54% of the fund, with established primes like Lockheed Martin, Northrop Grumman, and L3Harris alongside specialized suppliers such as ESCO Technologies, Moog, and DuCommun. The top holdings tilt toward emerging operators: Planet Labs at about 6%, Intuitive Machines at about 4%, and Iridium at about 4%. Oceaneering International represents the deep-sea side of the index.
This construction makes ROKT the picks-and-shovels option. Defense primes generate cash flow regardless of whether commercial constellations hit their revenue ramps, while smaller pure-plays provide upside if the commercial space accelerates. ROKT also carries the lowest cost of the three, with a 0.45% expense ratio and a small 0.34% dividend yield. The fund’s inception date is October 22, 2018, and shares are currently trading near $110.
The trade-off: with more than half the fund allocated to aerospace and defense, ROKT is less responsive to a commercial space breakout than UFO. The deep-sea allocation also dilutes the orbital thesis. Investors looking for direct exposure to satellite operators and launch services are paying for some weight that does not move with that narrative.
ARKX: Active Management and Adjacency Bets
ARKX is the only actively managed fund in this group. Cathie Wood’s team selects positions across orbital and suborbital aerospace, enabling technologies, aerospace beneficiaries, and adjacent areas including AI and 3D printing. The mechanism here is judgment. Where UFO and ROKT must follow their indexes, ARKX can rotate weight toward names the team believes will benefit from the commercial transition, including companies that would not pass a strict revenue-purity screen.
That flexibility has come at a cost, as ARKX has lagged its index-based peers this year, up about 11% YTD, compared with roughly 31% for UFO and 29% for ROKT. Some of that gap reflects the broader ARK approach: holdings in adjacent technology names that have not participated in the same satellite-and-launch rally. Shares are around $32.
The tradeoff is the standard active-management bargain. Investors get a portfolio shaped by conviction and the option to add names that pure-play indexes exclude, in exchange for higher fees, manager risk, and the possibility that the team’s adjacency calls drift from what investors thought they were buying.
Choosing Among the Three
Choosing among the three funds really comes down to the type of exposure an investor wants. UFO is the closest match for someone who wants the commercial space economy in its purest form. It keeps the focus on companies whose revenue actually comes from space activity and avoids the dilution from holding defense primes or adjacent industrials. The tradeoff is smaller AUM and a higher fee, which is the price of that purity.
ROKT works for investors who want frontier exposure but prefer some ballast from established defense contractors. The lower fee helps, and the mix of holdings means more than half the fund moves with defense budgets rather than commercial launch cadence. It’s a different way of expressing the theme, with a steadier cash‑flow base.
ARKX takes yet another angle. Investors who want active management and exposure to the broader technology stack behind the space economy tend to land here. The portfolio includes names that would never appear in either index‑based fund, which is part of the appeal. Recent performance has lagged that of the index options, so the fund’s character depends heavily on confidence in the manager’s selection process.
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