Historical stock prices for Invesco Insured California Muni (ICS). Invesco California Municipal Securities (the Trust), formerly Invesco Insured California Municipal Securities, is a diversified, closed-end management investment company. The Trust's investment objective is to provide current income, which is exempt from both federal and California income taxes. The Trust seeks to achieve the investment objective by investing primarily in insured municipal obligations that are rated A or higher by at least one nationally recognized statistical rating organization and are exempt from federal and/or California income tax. Municipal obligations include municipal bonds, municipal notes, municipal commercial paper and lease obligations. The Trust may invest in taxable or tax-exempt investment grade securities. The Trust's investment advisor is Invesco Advisers, Inc.