 SAN JOSE, Calif.--BUSINESS WIRE--Calix, Inc. NYSE: CALX today announced that Calix management will participate in the following virtual investor conferences during the third quarter of 2021: Jefferies 2021 Virtual Semiconductor, IT Hardware Communications Infrastructure Summit on August 31st and September 1st 14th Annual Barrington Research Virtual Fall Investment Conference on September 9th Jefferies Virtual Software Conference on September 14th and 15th Details for this event are av 