PKT future contolled by Hedge fundsProcera +3.5%; activist ups stake to 6.6% Hedge fund Castle Union Partners now owns a 1.36M-share (6.6%) stake in Procera (NASDAQ:PKT), up from the 5.0% stake it reported in October. (13D filing) Back in October, Castle Union said it might talk with Procera about "business and strategic alternatives," including a potential sale. Another activist, Merriman Capital, issued an open letter on Oct. 20 calling on Procera to evaluate strategic options. The deep packet inspection hardware vendor's shares are down 55% YTD, following multiple earnings disappointments. With a current market cap of $136M, Procera wouldn't be hard for a bigger telecom equipment player to digest, should one be interested