Shariah-compliant assets reached about $400 billion throughout the world in 2009, according to Standard & Poor’s Ratings Services, and the potential market is $4 trillion.^[17][18] Iran, Saudi Arabia and Malaysia have the biggest sharia-compliant assets.
In 2009 Iranian banks accounted for about 40 percent of total assets of the world's top 100 Islamic banks. Bank Melli Iran, with assets of $45.5 billion came first, followed by Saudi Arabia's Al Rajhi Bank, Bank Mellat with $39.7 billion and Bank Saderat Iran with $39.3 billion. Iran holds the world's largest level of Islamic finance assets valued at $235.3bn which is more than double the next country in the ranking with $92bn. Six out of ten top Islamic banks in the world are Iranian. In November 2010, The Banker published its latest authoritative list of the Top 500 Islamic Finance Institutions with Iran topping the list. Seven out of ten top Islamic banks in the world are Iranian according to the list.