Herman Jin, a prominent U.S.-based KOL, has expressed concerns over the market's optimistic outlook on Co-Packaged Optics (CPO) as a burgeoning AI investment trend. Jin, who has a background as a former FICC executive at Goldman Sachs Asia and is a co-founder of Zen Family Office, highlighted that while CPO represents the future of optics, its current validation is premature. He pointed out that the market is underestimating challenges such as yield rates and production ramp-up. Jin advised investors to consider purchasing small-cap stocks related to CPO only after negative developments occur, such as changes in major switch manufacturers' designs or disappointing CPO yield rates. This caution comes amid Serenity's bullish stance on CPO, viewing it as a key theme in the AI photonics supercycle. CPO technology is seen as crucial for overcoming power consumption and bandwidth limitations in AI computing, with SIVE identified as a core holding in this sector.