Roundhill’s Optical Module ETF (LYTE) posted a strong debut on its first day of trading, logging a trading volume of $72 million.

Leading investment management firm Roundhill’s optical module stock ETF (LYTE) delivered strong performance on its debut, logging $72 million in trading volume and a 1.44% gain, outperforming Roundhill’s DRAM ETF’s first-day trading volume. The ETF tracks 10 stocks and carries an expense ratio of 65 basis points. As AI data centers shift from copper connections to faster, more efficient optical links, optical interconnects have emerged as a critical bottleneck in AI infrastructure development. The AI optical module market alone is projected to grow 57% this year, rising from $16.5 billion to $26 billion. LYTE primarily invests in leading global photonics and optics companies, providing investors with concentrated exposure to the sector. Its top holdings include Lumentum Holdings Inc. (LITE) at 15.42%, Coherent Corp. (COHR) at 15.23%, and Chinese A-share listed firms Source Photonics, CICT, and SkyLight Communication, which account for 14.59%, 14.22%, and 7.9% of the fund respectively.