<Tr> <Th_colspan="3"> MEMO (off - balance - sheet items) </Th> </Tr> <Tr> <Td> Marketable securities held in custody for foreign official and international accounts </Td> <Td> </Td> <Td> 3445.42 </Td> </Tr> <Tr> <Td> U.S. Treasury Securities </Td> <Td> </Td> <Td> 2708 </Td> </Tr> <Tr> <Td> Federal Agency Securities </Td> <Td> </Td> <Td> 737.31 </Td> </Tr>

Why are us subsidiaries of foreign banks holding so many reserves at the fed