BlackRock, an American global investment management corporation, agreed to invest in SpiderRock Advisors, a provider of customized options strategies in the US wealth market. Financial terms were not disclosed. “BlackRock continues to invest to equip wealth managers with innovative solutions that support the twin objectives of better after-tax performance and personalization. We are eager to help advisors access SpiderRock Advisors’ capabilities to help them build tax -efficient, highly customizable portfolios that can generate income and manage risk for their clients,” Martin Small, BlackRock Head of US Wealth Advisory Business.