BB&T Bank and Union Bank saw the largest growth in deposit dollars among the Top 20 banks in the nation over last quarter, according to a Bank Innovation analysis of FDIC data.

The 20 largest banks overall lost an average of 1.1% of deposit dollars — or $1.3 billion — since last quarter. Meanwhile, the number of accounts grew slightly, 2.1%, over the same period.

Deposit volume is a strong indication of the strength of a bank’s retail operations.

BB&T grew its deposits 1.2% or $775 million over last quarter, while Union Bank grew 1.1%, representing $319 million. Over the same period, BB&T shed 16,000 customers, while Union Bank picked up about 5,000. HSBC saw greatest drop in deposit dollars, losing 4.4% of deposits, or $1.6 billion, and 91,000 customers.

Year over year, Capital One and Union Bank were the largest gainers of deposit dollars. Capital One climbed 79.1% or $65 billion on the back of its ING Direct merger in November 2012, while Union Bank rose 30.3%, or $7 billion. ING Direct was rebranded in February 2013 as Capital One 360.

Over the past year the Top 20 banks grew in both number of FDIC-insured deposit accounts, up 2.3%, and dollars, up 7.8%.  This greater growth in deposit dollars versus deposit accounts may be attributable to lower-value customers moving out of the banking system, or existing customers growing in value by picking up additional products.

TD Bank, Ally Bank, Wells Fargo and BB&T were also large gainers in deposit dollars compared to last year.

Rank in QOQ Gains in Retail Deposits at the Top 20 Banks ($-figures in 1,000s)

Rank in YOY Gains in Retail Deposits at the Top 20 Banks ($-figures in 1,000s)