According to the latest Economist magazine, Blackrock manages $4.1 trillion of financial assets - making it the biggest financial organization in the world. Its risk management system called Aladdin is used by other firms to manage $11 trillion more:
“All told, Aladdin keeps an eye on almost 7% of the world’s $225 trillion of financial assets. This is unprecedented - and it means flaws in the system could matter to more than just Blackrock, its investors and its customers. If that much money is being managed by people who all think with the same tools, it may be managed by people predisposed to the same mistakes.”