Which Russian billionaire co-founded the search engine Yandex?

Arkady Volozh co-founded the Russian search engine Yandex with fellow technology entrepreneur Ilya Segalovich.

Volozh was born in 1964 in Guryev, now Atyrau, Kazakhstan, and studied applied mathematics in Moscow. Before Yandex, he co-founded CompTek, a computer and networking business, and established Arkadia, a company developing search software. In 1993, he and Segalovich created a search engine designed to handle Russian-language morphology and unstructured text.

The Yandex.ru search engine was publicly launched in 1997, and Volozh later became its chief executive. Segalovich was the company's technical leader and proposed the name “Yandex,” commonly explained as a play on “Yet Another iNDEXer.” Volozh is sometimes described simply as Yandex's founder, but the fuller historical answer recognizes Segalovich as a co-founder too. The quiz's “Russian billionaire” wording refers to Volozh's Russian business background; he was born in Kazakhstan and later held Israeli and Maltese citizenship.