(Bloomberg) -- Hedge funds and other investors looking to cash in on Brazil’s surging oil and gas output are turning to a new breed of drillers as an alternative to turmoil-wracked Petroleo Brasileiro SA, the state-owned producer that’s had four CEOs since early 2019. Gerval Investimentos, the family office for the controlling shareholders of steelmaker Gerdau SA, is among the asset managers backing so-called junior producers.