Historical stock prices for Invesco California Insured Muni Income Trust (IIC). Invesco California Municipal Income Trust (the Trust), formerly Invesco California Insured Municipal Income Trust, is a diversified, closed-end management investment company. The Trust's investment objective is to provide current income exempt from federal and California income taxes. It seeks to achieve the Trust's investment objective by investing primarily in insured municipal obligations, which include municipal bonds, municipal notes, municipal commercial paper and lease obligations. The Trust may invest in inverse floating rate securities, such as residual interest bonds (RIBs) or tender option bonds (TOBs) for investment purposes, and may enter into futures contracts. Invesco Advisers, Inc. acts as the investment adviser of the Trust.