ARKX vs GALX vs ROKT vs UFO: Which Fits Each Goal in 2026?

Overview

All four securities track or actively manage exposure to companies operating in the space economy—satellites, launch systems, enabling technologies, and related infrastructure. The critical split is between active and passive strategies: ARKX and GALX use active management to pick individual space stocks, while ROKT and UFO track published space indexes. A secondary distinction runs across maturity and asset size: ROKT and UFO have been running for several years with meaningful assets under management, whereas GALX launched recently and remains tiny. On fees, ROKT stands apart at 0.45%, while ARKX, GALX, and UFO all charge 0.75%. ARKX has the largest asset base at $766M, followed by UFO at $558M and ROKT at $181M; GALX remains nascent at $2.53M since its inception in 07/15/2026. On market sensitivity, UFO carries the highest beta at 1.9, suggesting greater volatility relative to the broad market, while ROKT's 1.46 is lowest among the group. None of the four funds pay meaningful income: ROKT and UFO yield 0.18% and 0.27%, respectively, while ARKX and GALX do not report distributions.

Who each is best for

• ARKX: Fits investors drawn to concentrated active stock-picking in space technology and willing to accept higher volatility (beta of 1.71) for the chance that ARK's research team identifies outperformers the index misses.

• GALX: Designed for investors building exposure to the full space-economy value chain—from launch to satellite operations to enabling tech—through an active lens, though the fund's short history and minimal asset base mean tracking record is thin.

• ROKT: Suits investors who prefer a transparent, rules-based approach to space-sector exposure and want the lowest expense ratio (0.45%) in this group, accepting the mechanical rebalancing and index methodology as adequate.

• UFO: Designed for investors seeking broad space-sector exposure via index tracking with slightly higher volatility (1.9) than ROKT, accepting a 0.75% fee in exchange for the S-Network's particular sector definition.

Key risks to know

• Sector concentration and growth volatility. All four funds concentrate in a narrow and early-stage industry with few proven profitable revenue streams. Space companies often depend on government contracts, launch cadence, or long capital cycles; a slowdown in government space spending, satellite demand, or private space investment could depress valuations across all holdings simultaneously.

• Active management tracking variance (ARKX and GALX). ARKX and GALX's returns will diverge from any benchmark based on their stock selection and timing decisions. If ARK's or VistaShares' analysts misread the space economy's development—overweighting near-term speculative players, for example—underperformance relative to the index funds could be persistent.

• **Index methodology differences (ROKT vs. Holdings and weightings may diverge materially; investors cannot assume these two index tracers will move in lockstep.

• Early-stage fund risk (GALX). GALX launched in 07/15/2026 with $2.53M in assets.

• Cyclical venture-backed capital exposure. Many space-economy companies depend on continued venture and growth-equity funding or public market access for expansion. A contraction in risk appetite for early-stage tech or capital markets stress could impair funding availability and growth trajectories, hitting these concentrated portfolios hard.

Bottom line

If you want active stock-picking in space and can stomach the volatility, ARKX offers the largest asset base and longest track record among the active options. If you prefer index exposure with the lowest cost, ROKT's 0.45% fee beats the 0.75% and 0.75% crowd. The choice between ROKT and UFO hinges on which space-sector index definition aligns better with your view of the industry; GALX remains too new and small to evaluate reliably. Past performance in space equities does not predict future results.