The biggest bank in BMW Financial services is the Bank of Munich.
It has a total market capitalisation of $15.2 trillion (£9.2bn), according to data compiled by the Bloomberg Billionaires Index.
It also has a majority stake in BMW.
The second biggest bank is UBS.
It holds a stake of 5.7%.
But the third biggest bank, JPMorgan Chase, is not listed on the index, because of its investment in Tesla Motors.
The fourth biggest bank on the list is Deutsche Bank, which holds a 10.1% stake.
Other banks on the top 50 include Goldman Sachs Group Inc, JPMorgan, Credit Suisse Group AG, Bank of Tokyo Mitsubishi UFJ Financial Group, Deutsche Bank and Credit Suise Group AG.
Bank of America Corp, which is the largest bank in the US, holds a 6.4% stake in the bank.
Other big players on the 50 include Morgan Stanley, UBS, JP Morgan Chase, BNP Paribas SA, Barclays Plc and Credit Agricole SA.
Source: Bloomberg Billionaire Index article The Bank of Sweden, the country’s second largest, is also on the Bloomberg List.
It is the third largest bank by market capitalisations, having a total of $8.8 trillion.
The bank has a 9.4%.
It has also held a majority share in Swedish bank UBS since 2009.