State Street, Mellon Financial and Northern Trust all say their assets under custody rose last year.

State Street’s custody assets jumped 17% to US$11.85 trillion as of Dec. 31, 2006. That’s up from the $10.12 trillion it reported at the end of 2005.

Assets under custody or administration at Mellon Financial also hit a record, rising 15% to $4.491 trillion.

Northern Trust’s custody assets totaled $3.26 trillion, up 21% from the end of 2005, and included $1.69 trillion of global custody assets, which increased 36% over the year-ago period.

The figures released today were part of the three firms’ fourth-quarter earnings reports.

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