Alter Venture Partners is an investment firm founded by Antonio Viana-Baptista in 2018. Alter invests in disruptive enterprises and helps companies expand their presence across Europe, Latin America, and Asia. It has offices in San Francisco, California and Lisbon, Portugal. Alter has invested in companies like SiMa.ai, Balbix, Videon, Monogoto, SlashNext, Banyan Security, and Spectro Cloud. Alter's team of partners includes Jeff Karras, Pedro Silva Pinto, and Louis Toth.