STOA acquires stake in Sao Paulo Metro Line 6, Brazil January 20, 2021 | Latin America Company News Spain-based Acciona S.A. has announced the incorporation of STOA, an investment fund to Concessionaria Linha Universidade (CLU), the concessionaire of São Paulo Metro Line 6. STOA will acquire ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password