Deposits

9 Months Ended

Sep. 30, 2025

Deposits [Abstract]

Deposits

Deposits

The following table is a summary of deposits as of the dates shown: 

(Dollars in thousands)	September 30, 2025			December 31, 2024			September 30, 2024
Balance:
Non-interest-bearing	$	10,952,146		$	11,410,018		$	10,739,132
NOW and interest-bearing demand deposits	6,710,919			5,865,546			5,466,932
Wealth management deposits	1,600,735			1,469,064			1,303,354
Money market	20,270,382			17,975,191			17,713,726
Savings	6,758,743			6,372,499			6,183,249
Time certificates of deposit	10,418,456			9,420,031			9,998,573
Total deposits	$	56,711,381		$	52,512,349		$	51,404,966
Mix:
Non-interest-bearing	19		%	22		%	21		%
NOW and interest-bearing demand deposits	12			11			11
Wealth management deposits	3			3			3
Money market	36			34			34
Savings	12			12			12
Time certificates of deposit	18			18			19
Total deposits	100		%	100		%	100		%

Wealth management deposits represent deposit balances (primarily money market accounts) at the Company’s subsidiary banks from brokerage customers of Wintrust Investments, LLC (“Wintrust Investments”), Chicago Deferred Exchange Company (“CDEC”) and trust and asset management customers of the Company.