ViaSat is trading at $73.25, up 4.20%, with the non-binding satellite-network interoperability MoU a plausible company-specific catalyst; reports do not establish it as the sole driver. - ViaSat, Space42 and Terrestar Solutions announced the MoU to develop interoperability between planned satellite networks. - It links Terrestar’s planned CaStar constellation with Equatys, a planned shared-infrastructure platform for direct-to-device and mobile satellite services. - No current trading-volume figure was available in the supplied price context or sources reviewed.