How does one calculate the zakat for shares?

If the shareholder only owns one type of shares, Zakat on Shares is calculated by taking 2.5% of the market value of the shares when Haul and Nisab are reached. If the shareholder owns more than one type of shares, the calculation and payment of the Zakat on Shares is done at the end of the Financial Year (ie. 31 Dec) by taking 2.5% of the market values of all the shares at the end of the year.