Serenity said in a post on X that JPMorgan Chase increased its holding in Sivers, identified as SIVE, to more than 5% this month from 0.4% last month, mainly through institutional funds. The post said the move followed a shakeout of retail investors and reiterated Serenity's view that Sivers plays an important role in the co-packaged optics, or CPO, supply chain, a position it said the market had not fully recognized. Serenity also said it had previously made that case to retail investors and Swedish hedge funds.