Woofun AI reports that research firm SemiAnalysis is facing market controversy over its recent investment activities. In June, the firm published a bearish report on the optical communication sector, citing low yields in CPO technology and potential product delays, which triggered a sharp decline in related stock prices.

Subsequently, SemiAnalysis partnered with Tema ETFs to launch an optical communication-themed ETF. The fund's holdings now include Himax Technologies and Lumentum Holdings, companies that SemiAnalysis had heavily shorted in its earlier "Powered Down, Lights Off" report. This sequence of events has sparked discussions regarding the firm's "short first, then long" strategy.