GraniteShares submitted paperwork to the SEC on May 28 for something called the Speed of Light AI ETF, a name that sounds like it was cooked up by a sci-fi screenwriter but actually points to a real corner of the tech world: photonics.
The filing, a Form N-1A post-effective amendment submitted under GraniteShares ETF Trust, is light on specifics. No ticker symbol, no launch date, no fee structure, no detailed investment strategy. What it does signal is that one of the most aggressive players in the thematic ETF space is planting a flag in optical computing and AI infrastructure.
What we know, and what we don’t
The “Speed of Light” branding almost certainly refers to photonics, the use of light-based technologies for data transmission and processing. Instead of electrons moving through copper wires, photons move through optical pathways, delivering data faster while consuming less energy.
That energy problem is very real. AI training and inference workloads are pushing power grids to their limits. Photonic computing, which processes information using light instead of electrical signals, is one of the more promising approaches to making AI infrastructure sustainable at scale.
