Is zakat obligatory on money invested in Sharia-compliant investment funds in banks, and at what rate is zakat calculated on it?

It has been previously pointed out that Al-Ra'ed Fund engaged in riba-based dealings (usury), either through lending or borrowing, which is impermissible in Sharia (definition). As for the zakat (definition) on shares, its details vary according to the intention of the owner. If the company does not pay zakat on its assets, then it is obligatory for the shareholders to pay zakat on their shares. If the shareholder purchased the shares with the intention of benefiting only from their annual yield, then there is no zakat on the principal of the share. Rather, zakat is due on the yield (2.5%) after a full year has passed. However, if the shares were acquired with the intention of trading, then they are subject to zakat as trade goods, based on their market value at the completion of the year (2.5%).