Roundhill Photonics & Optics ETF (LYTE) perpetual market

LYTE is the Roundhill Photonics & Optics ETF, an actively managed exchange-traded fund issued by Roundhill Investments that began trading in August 2026. The fund invests in companies whose business is tied to photonics and optical technologies, the field concerned with generating, transmitting and detecting light. Its holdings focus on firms involved in areas such as optical networking and transceivers, lasers, sensors, silicon photonics and the components that move data as light rather than electrical signals, a technology increasingly important to data centers and artificial intelligence infrastructure. Because it is actively managed rather than tracking a fixed index, its managers select and weight positions within this theme. LYTE gives investors concentrated, thematic exposure to the optics supply chain in a single listed instrument, and its performance reflects demand for high-speed data transmission and related hardware.