Best Space Exploration & Defense ETFs in 2026

Space ETFs span a surprisingly wide spectrum, and knowing where a fund sits on it matters more than the label. At one end are pure space-economy funds (ARKX, UFO) that reach for satellite operators, launch providers, and next-generation space startups — higher risk, higher potential, more volatile. At the other end are aerospace-and-defense ETFs (ITA, PPA, XAR) anchored by established primes like Lockheed Martin, RTX, and Boeing, which behave more like a defense-sector fund with steadier revenue and even modest dividends. Both are legitimate ways to play the theme, but they carry different risk and return profiles, so check the holdings before you buy. The space economy is a real long-term growth story — falling launch costs, exploding satellite demand, and rising defense budgets — yet it remains sensitive to government contracts and budget cycles. Treat a space ETF as a long-horizon satellite position sized to the volatility you're willing to accept.

• Distribution sustainability: the average distribution rate here is 15.3%, and payouts at that level often include return of capital — when distributions persistently exceed total return, NAV erodes and shrinks the base that generates future income.
• Concentration in one theme: most funds here focus on space, so the whole list tends to draw down together when that corner of the market falls out of favor — diversification across the table is lower than the fund count suggests.
• Expense drag: expense ratios in this group average 0.75% — several times what broad index funds charge — and that cost compounds directly against total return.
• Liquidity and closure risk: 13 of the 24 funds listed hold under $100M in assets, and small funds tend to trade with wider bid-ask spreads and face a higher risk of liquidation.
• Short track records: 16 of the 24 funds launched within the last three years, so their distribution history is too short to judge payout durability across a full market cycle.

"Best" here means the selection rule below, applied to our own data — not an opinion poll and not a prediction:

• Universe: every security in our database matching this category — 24 qualified as of August 2026.
• Exclusions: liquidated, delisted and renamed funds drop out automatically; a renamed fund's successor appears in its place.
• Ordering: assets under management, largest first.
• Cap: none — all 24 matching funds are listed.
• Independence: no placement on this page is paid, sponsored, or influenced by a fund issuer.