One Vanguard ETF Is Betting Big on SpaceX, But Is 20% Too Big a Bet?
The Vanguard Communication Services ETF (VOX) has increased its stake in Space Exploration Technologies (SpaceX) by 85.2% in two months. That stake could eventually grow to as much as one-fifth (20%) of the fund once SpaceXs shares fully unlock. VOX held 632,077 SpaceX (SPCX) shares on June 30, a total that reached 1,170,398 by Aug. 31. That makes SpaceX the funds eighth-largest holding, though Vanguard has not disclosed the exact share of VOX it now represents. Is This SpaceX Concentration a Problem Hiding in Plain Sight? SpaceX debuted on the Nasdaq on June 12, 2026, with only about 5% of its shares available to trade. Each new share unlock since then has expanded that float and, with it, SpaceXs weight inside float-based indexes. The Nasdaq-100 weights SpaceX using a multiple of its float, not its full market cap. That formula applies until the float grows large enough. As more shares unlock, the float grows, and so does SpaceXs index weight. SpaceXs performance has been far from impressive in its entire lifetime. Image Source: Trading View VOX has ridden that mechanic more aggressively than its Vanguard peers. Other Vanguard funds have barely touched SpaceX by comparison. A Payoff Has to be Coming? SpaceX has not cracked the top 50









