Blackrock California Municipal 2018 Term Trust operates as a diversified, closed-end management investment company. The trust invests primarily in portfolio of municipal securities. Its portfolio includes investments in transportation, hospital, lease, education, housing, industrial and pollution control, water and sewer, power, and tobacco sectors. BlackRock Advisors, Inc. serves as the investment adviser of the trust. Blackrock California Municipal 2018 Term Trust was established in October 2001 and is based in Wilmington, Delaware.