Angel investor Ali Partovi, co-founder of LinkExchange and Code.org and an early adviser and investor at various tech companies, has filed to raise $50 million for his firm Neo Fund, according to a regulatory filing. The filing lists the firm’s address at the Ferry Building in San Francisco. His brother, Hadi Partovi, with whom he often co-invests, is not listed on the filing. The Partovi brothers have been involved in various fast-growing and successful companies, such as investing in Zappos and Facebook, launching the nonprofit Code.org, which is developing computer programming education, and they have served as advisers to Dropbox and Indiegogo, among others. Their investments also include San Francisco-based iBeat, maker of a heart-monitoring smartwatch. They are also the cousin of Uber CEO Dara Khosrowshahi.