SpaceX, nuclear, and the return of the return of the 2020 thematic ETF boom: Chart of the Day

The resurgence of thematic ETFs—funds built around disruptive trends like space exploration, nuclear energy, and artificial intelligence—marks more than just a fleeting Wall Street fad. It reflects a deeper shift in investor psychology, where macroeconomic anxiety and technological optimism collide. After the 2020-2021 SPAC frenzy and meme-stock bubble faded, thematic ETFs are back, but with a twist: this time, the narratives are tethered to tangible industrial and geopolitical forces rather than speculative hype. The inclusion of space-focused players like SpaceX—long a private venture—within publicly traded ETF structures signals a maturing of once-niche industries into investable themes. Similarly, nuclear power’s revival, driven by energy security concerns and decarbonization pressures, underscores how climate policy and defense priorities are reshaping traditional energy markets. What makes this wave distinct from the 2020 boom is its grounding in real-world demand. Unlike the crypto and fintech ETFs of the last cycle, which often relied on narrative rather than revenue, today’s themes are backed by policy tailwinds (e.g., the Inflation Reduction Act for nuclear) and corporate commitments (e.g., SpaceX’s Starship program). Yet risks remain. Thematic ETFs are notoriously volatile, with performance tied to sentiment as much as fundamentals. The space sector, for instance, promises long-term growth but faces regulatory hurdles and technological setbacks that could dampen investor enthusiasm. Looking ahead, the durability of this trend may hinge on whether these themes can deliver consistent returns beyond the initial hype. If nuclear ETFs stabilize amid policy support and space-related ventures achieve milestones like reusable rockets, inflows could persist. Alternatively, a market downturn might expose overvalued segments, echoing the 2022 thematic ETF shakeout. Either way, this revival suggests Wall Street’s appetite for big-picture storytelling remains undiminished—provided the stories are backed by real economic momentum. For now, the question isn’t whether thematic ETFs are here to stay, but whether they can avoid repeating the cycles of euphoria and collapse that defined their last surge.